КАТАЛИЗАТОРЫ ГИДРООЧИСТКИ НА ПОДЛОЖКАХ, ОБЛАДАЮЩИЕ ПОВЫШЕННОЙ АКТИВНОСТЬЮ

В данном изобретении предложены катализаторы на подложке, способ его получения, а также способ гидроочистки, гидродеазотирования и/или гидродесульфуризации с применением катализаторов на подложках. Катализатор на подложке содержит носитель, фосфор, по меньшей мере один металл группы VIB, по меньшей мере один металл группы VIII и полимер, причем данный полимер содержится в катализаторе в количестве около 1,5 мас.% или более относительно общей массы других компонентов в катализаторе. Молярное соотношение между фосфором и металлом группы VIB составляет от около 1:1,5 до менее чем около 1:12. Молярное соотношение между металлом группы VIB и металлом группы VIII составляет от около 1:1 до около 5:1. Полимер имеет углеродный скелет (основную цепь) и содержит функциональные группы, содержащие по меньшей мере один гетероатом. Способ получения катализатора на подложке включает: I) соединение вместе компонентов в любой из следующих комбинаций: a-i) носитель, один или более мономерных компонентов, ...

СПОСОБ ПРИГОТОВЛЕНИЯ КАТАЛИЗАТОРА

Изобретение относится к способам приготовления катализатора, например, для окисления аммиака и углеводородсодержащих газов, и направлено на получение равномерного покрытия поверхности носителя с усиленной адгезией, позволяющего увеличить рабочий ресурс катализатора, повысить производительность производства и снизить его стоимость. Способ приготовления катализатора включает предварительную термическую обработку инертного носителя в токе воздуха или кислорода, последовательное нанесение на его поверхность промежуточного покрытия из оксида алюминия и платины и осуществление сушки. Перед термической обработкой осуществляют обезжиривание поверхности носителя. Промежуточное покрытие из оксида алюминия получают водным раствором соли алюминия следующего состава, мас.%: девятиводный нитрат алюминия 3,5-5,0; аммиак водный (25% концентрации) 1,4-1,8; гелеобразующая добавка на основе целлюлозы 0,25-0,35; ПАВ 0,1-0,15; вода остальное до 100. 1 н. и 1 з.п. ф-лы, 1 пр.

СПОСОБ ПОЛУЧЕНИЯ ПОРОШКА ПРОВОДЯЩЕГО СОЕДИНЕНИЯ ТИПА МАЙЕНИТА

... 1. Способ получения соединения типа майенита, способ включает(1) стадию формирования порошка - предшественника соединения типа майенита посредством воздействия на смесь порошка исходных материалов соединения типа майенита и воды гидротермальной обработки;(2) стадию формирования порошка соединения типа майенита посредством дегидратирования порошка предшественника посредством нагрева,(3) стадию формирования порошка активированного соединения типа майенита посредством нагрева порошка соединения типа майенита в атмосфере инертного газа или в вакууме в диапазоне температур от 400˚C до 1000˚C в течение трех часов или больше и(4) стадию инжекции электронов в соединение типа майенита посредством смешивания порошка активированного соединения типа майенита с восстанавливающим агентом и нагрева полученной в результате смеси в диапазоне температур от 400˚C до 1100˚C для осуществления восстановительной обработки, где получают порошок проводящего соединения типа майенита, имеющий концентрацию электронов ...

СПОСОБ НАНЕСЕНИЯ ПОКРЫТИЯ НА ФИЛЬТРОВАЛЬНУЮ ОСНОВУ

ФИЛЬТР ДЛЯ ФИЛЬТРОВАНИЯ ВЕЩЕСТВА В ВИДЕ ЧАСТИЦ ИЗ ВЫХЛОПНЫХ ГАЗОВ, ВЫПУСКАЕМЫХ ИЗ ДВИГАТЕЛЯ С ПРИНУДИТЕЛЬНЫМ ЗАЖИГАНИЕМ

... 1. Фильтр для фильтрования вещества в виде частиц (ВВЧ) из выхлопных газов, выпускаемых из двигателя с принудительным зажиганием, который содержит пористую подложку, имеющую впускные поверхности и выпускные поверхности, при этом впускные поверхности отделены от выпускных поверхностей пористой структурой, содержащей поры первого среднего размера, причем пористая структура покрыта покрытием, содержащим множество твердых частиц, причем пористая структура пористой подложки с покрытием содержит поры второго среднего размера, и поры второго среднего размера меньше пор первого среднего размера.2. Фильтр по п.1, в котором первый средний размер пор пористой структуры пористой подложки составляет от 8 до 45 мкм.3. Фильтр по п.1, в котором количество покрытия составляет >0,50 г/дюйм.4. Фильтр по п.3, в котором количество покрытия составляет >1,00 г/дюйм.5. Фильтр по пп.1, 2, 3 или 4, содержащий поверхностное покрытие, при этом слой покрытия, по существу, покрывает поверхностные поры пористой структуры ...

СПОСОБ АКТИВАЦИИ КАТАЛИЗАТОРОВ ГИДРООБРАБОТКИ

ZUSAMMENSETZUNGEN DES SCHALENKATALYSATOR-TYPUS, ENTHALTEND WISMUT, NICKEL, KOBALT, EISEN UND MOLYBDÄN, UND DEREN VERWENDUNG ZUR HERSTELLUNG VON UNGESÄTTIGTEN ALDEHYDEN

Verfahren zur Herstellung von Katalysatoren aus pulverfoermigen Katalysatormassen

Verfahren zur Beschichtung eines Substrates

Verfahren zur Herstellung von geträgertem Ruthenium auf siliciumdioxid-modifiziertem Titandioxid, und Verfahren zur Herstellung von Chlor

Eine Aufgabe der Erfindung ist es, ein Verfahren zur Herstellung eines geträgerten Rutheniumoxids bereitzustellen, wobei Siliciumdioxid effektiv auf einen Titandioxid-Träger geträgert werden kann, und ein geträgertes Rutheniumoxid mit überlegener thermischer Stabilität und Lebensdauer des Katalysators erhalten wird. Eine andere Aufgabe der vorliegenden Erfindung ist es, ein Verfahren zur stabilen Herstellung von Chlor für einen längeren Zeitraum unter Verwendung des geträgerten Rutheniumoxids, das mit dem vorstehend beschriebenen Verfahren erhalten wurde, bereitzustellen. Die Erfindung betrifft ein Verfahren zur Herstellung eines geträgerten Rutheniumoxids, in dem Rutheniumoxid und Siliciumdioxid auf einen Titandioxid-Träger geträgert werden, wobei ein Titandioxid-Träger mit einer Alkoxysilanverbindung in Kontakt gebracht wird, gefolgt von Trocknen unter einem Strom Wasserdampf enthaltenden Gases, dann einem ersten Kalzinieren unter einer Atmosphäre eines oxidierenden Gases unterzogen wird ...

Exhaust system for a vehicular positive ignition internal combustion engine

Core-shell catalysts and absorbents

Active inorganic composites are disclosed which have a core-shell structure which comprises a particulate inorganic core and a shell layer comprising a plurality of inorganic shell particles. The composites may be manufactured by methods utilizing charge reversal to ensure that inorganic particulate material of the shell layer is attracted and bonded to the core particle. The materials find use as catalysts and adsorbents and separation media. The core may be a zeolite and the shell layer may be a zeolite or a mixed metal oxide such as a perovskite.

Positive ignition engine comprising an exhaust system including a filter therefor

Filtering particulate matter from exhaust gas

A filter for filtering particulate matter (PM) from exhaust gas emitted from a positive ignition engine comprises a porous substrate 10 having inlet and outlet surfaces, wherein the inlet surfaces are separated from the outlet surfaces by a porous structure containing pores 12 of a first mean pore size. The porous structure is coated with a catalytic washcoat 14 comprising a plurality of solid particles, wherein the porous structure of the washcoated porous substrate contains pores 16 of a second mean pore size. The second mean pore size is less than the first mean pore size. The catalytic washcoat is a hydrocarbon trap comprising at least one molecular sieve which is un-metallised. Alternatively, the molecular sieve is catalysed with a platinum group metal. The washcoat may substantially cover surface pores of the porous structure or may sit substantially within the porous structure of the porous substrate. An exhaust system comprising the filter, a positive ignition engine comprising ...

Three-way catalyst and its use in exhaust systems

Catalyst article for use in an emission treatment system

A catalyst article for treating a flow of a combustion exhaust gas comprises a catalytically active substrate comprising one or more channels extending along an axial length thereof; the substrate is formed of an extruded vanadium-containing SCR catalyst material. The channels have a first surface for contacting a flow of combustion exhaust gas and at least a portion of the first surface comprises a compound of copper, iron, cerium or zirconium, or a mixture of any two or more thereof. A first layer is disposed on at least a portion of the first surface, the first layer comprises a washcoat of an ammonia slip catalyst (ASC) comprising one or more platinum group metals supported on a particulate metal oxide support material, and a layer comprising a washcoat of SCR catalyst is disposed on a surface in the one or more channels. The layer comprising the SCR catalyst can be a second layer disposed on at least a portion of the first layer. Further aspects relate to an emission treatment system ...

Catalyst and method for preparing a catalyst

Apparatus and method for coating substrates with washcoats

Apparatus, method and valve assembly for coating substrates with washcoats. The valve assembly 4 comprises an outlet valve movable between a closed state and an open state. When the valve moves from its open state to its closed state, a pressure drop (e.g. negative pressure, backward suction force) is created within an interior of a washcoat showerhead 5. This can be used to reduce or prevent dripping or leakage of the showerhead 5. The apparatus and method include a substrate 10 being engaged with a headset 6 of a substrate coating apparatus 1 below the washcoat showerhead 5. Washcoat is discharged from the showerhead 5 onto an upper surface 12 of the substrate under control of a valve assembly 4 before being drawn through the substrate by use of a vacuum generator 7. The valve may include an enlarged valve stem head (63; figs. 2, 7) which is located downstream of the valve seat (24; figs. 2,7) in both the open state and the closed state, and which acts as a piston to create the pressure ...

Use of coated substrates

Use of a coated substrate as an antimicrobial substrate is disclosed, where the substrate comprises a photocatalytically-active titanium oxide coating on at least one surface thereof, wherein the coated surface of the substrate has a photocatalytic activity of greater than 5 x 10-3cm-1min-1, and wherein the coated substrate has a visible light reflection measured from the coated surface of 35% or lower. The use may be in an architectural glazing unit, automotive glazing unit, electronic device, furniture, splashbacks, bulkhead, door, blind, medical container, wall covering, touchscreen, mirror or glass bottle. The coated substrate may comprise a transparent glass substrate, and a coating located on the glass substrate, where the coating comprises the following layers in sequence starting from the glass substrate: a layer based on tin dioxide having a thickness of 5-35 nm; a layer based on silicon dioxide having a thickness of 15-50 nm; a layer based on antimony-doped tin dioxide having ...

PHOTO CATALYST POWDER TO THE CLEANING OF THE ENVIRONMENT, THE POWDER ABSTENTION POLYMER COMPOSITION AND FORM ARTICLE FROM IT, AS WELL AS PROCEDURES FOR THEIR PRODUCTION

PROCEDURE FOR THE PRODUCTION OF CATALYSTS FUER THE REDUCTION OF NITROGEN OXIDES FROM EXHAUST GASES AND SUCH CHEMICAL AIR CLEANING METHODS.

SILVER CATALYST AND PROCEDURE FOR ITS PRODUCTION.

PROCEDURE FOR THE IMPROVEMENT OF THE THERMAL SHOCK BEHAVIOR OF MONOLITH CATALYSTS.

IMPROVED METHODS AND CATALYSTS FOR THE PRODUCTION OF KOHLENSTOFFIBRILLEN

PROCEDURE FOR COATING A CERAMIC HONEYCOMB BODY

METHOD FOR COATING A CATALYST CARRIER CONTAINING TWO DIFFERENT PARTIAL STRUCTURES WITH A CATALYTICALLY ACTIVE COATING, AND CATALYST OBTAINED THEREBY

PHOTOCATALYST COMPOSITION

Diesel exhaust gas oxidation catalyst, and method for purifying diesel exhaust gas by using same

A diesel exhaust gas oxidation catalyst, which is configured to purify exhaust gas from a diesel engine, includes: an alumina-based carrier in which a content of alumina is 40 mass% or higher; Pt supported on the alumina-based carrier; Pd supported on the alumina-based carrier; and at least one type of added element that is selected from the group consisting of alkali metal elements and alkaline earth metal elements and that is supported on the alumina-based carrier. A supported quantity of the Pt is 0.1 to 5 parts by mass relative to 100 parts by mass of the alumina-based carrier. A molar ratio obtained by dividing a supported quantity of the Pd by the supported quantity of the Pt is 0.1 to 1.5. A molar ratio obtained by dividing a supported quantity of the added element by the supported quantity of the Pt is 1 to 12.

Method and apparatus for removing undesirable chemical substances from gases, exhaust gases, vapors, and brines

Supported catalyst consisting of metal of the platinum group and obtained by means of controlled electroless deposition

CATALYTIC ACTIVE COATING OF CERAMIC HONEYCOMB BODIES, METAL SURFACES AND OTHER CATALYST CARRIERS FOR WASTE AIR PURIFICATION SYSTEMS AND BURNER SYSTEMS

The invention relates to a device for the catalytic coating of surfaces and honeycomb bodies, which as a result of a stainless steel powder precoating enables a longer-lasting product, lower sensitivity, a larger temperature application range, and a longer service life, and to a method for the use in flameless catalytic condensing boilers, in the catalytic post-purification of thermal waste air purification systems and as a coating for fuel cell membranes.

METAL OXIDE AND NOBLE METAL CATALYST COATINGS

A substrate (5) having a catalytic surface (4) having a coating (11) of metal oxide and noble metal particles (1a and 1b) in the nominal diameter size distribution range of less than three microns, preferably less than one micron is produced by thermal spraying a mixture of large size particles (1a and 1b) (greater than 10 microns in nominal size distribution range) of hydroxides, carbonates or nitrates of the metals: cerium, aluminium, tin, manganese, copper, cobalt, nickel, praseodymium or terbium particles; and hydroxides, carbonates or nitrates of the nobles metals: ruthenium, rhodium, palladium, silver, iridium, platinum and gold onto the substrate (5). The coating (11) adheres to the surface (4) and provides desirable catalyst properties.

STRUCTURED IRON-BASED CATALYST FOR PRODUCING A-OLEFIN FROM SYNTHESIS GAS AND PREPARATION METHOD AND USE

A structured iron-based catalyst for producing an a-olefin from a synthesis gas and a preparation method and use. The catalyst comprises an active component iron, auxiliary agents and a carrier, wherein the auxiliary agents comprise a first auxiliary agent which is a transition metal or a transition metal oxide and a second auxiliary agent which is a metal oxide. The content of the active component iron is 50.0%-99.8%, the content of the first auxiliary agent is 0-5.0%, the content of the second auxiliary agent is 0-10% and the balance is the carrier which is silicon dioxide. A precursor of the active component iron, a precursor of the first auxiliary agent and the carrier silicon dioxide are made into mono-dispersed particles using a heat dispersing method, and then impregnated with a solution of a precursor of the second auxiliary agent to obtain the structured iron-based catalyst. The above-mentioned structured iron-based catalyst is used for producing an a-olefin from a synthesis gas ...

SUPPORTED HYDROTREATING CATALYSTS HAVING ENHANCED ACTIVITY

This invention provides supported catalysts comprising a carrier, phosphorus, at least one Group VI metal, at least one Group VIII metal, and a polymer. In the catalyst, the molar ratio of phosphorus to Group VI metal is about 1:1.5 to less than about 1:12, the molar ratio of the Group VI metal to the Group VIII metal is about 1:1 to about 5:1, and the polymer has a carbon backbone and comprises functional groups having at least one heteroatom. Also provided are a process for preparing such supported catalysts, as well as methods for hydrotreating, hydrodenitrogenation, and/or hydro desulfurization, using supported catalysts.

PROCESS FOR IMPROVING THE THERMAL SHOCK RESISTANCE OF MONOLITHIC CATALYSTS

PROCESS FOR PREPARING CARBOXYLIC ACID SALTS AND CATALYSTS USEFUL IN SUCH PROCESS

Supported catalyst useful in the preparation of carboxylic acid salts, said catalyst comprising; an alkali resistant support, a plurality of metal particles selected from the group consisting of osmium, iridium and rhodium and a coating of a catalytically active metal selected from the group of copper, cobalt, nickel, cadmium or mixtures thereof. ...

Supported catalyst prodn. used for denitrification of waste combustion gas - by coating pretreated support from gas phase and after treatment to convert coating to catalytically active material

Prodn. of supported catalysts (I) comprises (1) thermal pretreatment of the support (II); and (2) deposition of coating material (III) from the gas phase; followed by (3) first after-treatment to convert (III) to catalytically active mateiral; and (4) second after-treatment to proudce (I). Pref. (II) consists of metal oxide(s), pref. Al2O3, rutile, anatase, Cr oxide, SiO2 and/or ZrO2 in granular or monolithic form; and (III) of organometallic cpds. and/or metal alkoxides, pref. of transition metals, esp. V oxytriisopropoxide (IIIA). USE/ADVANTAGE - (I) is made for eliminating NOx gases from waste combustion gas (IV) (claimed). Thin homogenous coatings are obtd., in which individual mols. are anchored to the surface of (II), so that costly (III) is saved.

Having flow passages and at least one catalytic system consisting of a support table active substance.

Es wird ein neues System beschrieben, das aus einem Träger mit Strömungskanälen und mindestens einer katalytisch wirksamen Substanz besteht, wobei das trägerbildende Material eine kapillare interkonnektierende Porosität aufweist und die katalytisch wirksame Beschichtung mindestens innerhalb der Materialporosität auf den die Poren bildenden Kristallen aufgebracht ist, dass die Anbindung der katalytisch wirksamen Substanz auf thermischem Weg und die Beschichtung der Trägermaterialkristalle ohne Wash-coat-Hilfsbeschichtungen erfolgt ist.

METHOD OF PREPARING OXIDE - POLYMETALLIC CATALYSTS BASED ON HIGH-TEMPERATURE ALLOYS FOR PARTIAL OXIDATION OF HYDROCARBONS IN SYNTHESIS OF - GAS

КАТАЛИТИЧЕСКОЕ ПОКРЫТИЕ, НАНЕСЕННОЕ НА ОСНОВУ, ПРОЦЕСС ЕГО ПОЛУЧЕНИЯ, РЕАКТОР, СОДЕРЖАЩИЙ ПОДОБНОЕ ПОКРЫТИЕ, И ЕГО ИСПОЛЬЗОВАНИЕ

Описаны основы, которые имеют каталитическое покрытие, состоящее, по крайней мере, из одного каталитического слоя, содержащего поры и полости. Полостями каталитического слоя является пространства неправильной формы, которые имеют, по крайней мере, два размера больше 5 мкм или площадь поперечного сечения не менее 10 мкм2. Каталитические покрытия, полученные по изобретению, отличаются высокой адгезивной прочностью и могут выгодно использоваться в микрореакторах.

METHOD FOR PREPARING REFRACTORY ALLOY-BASED POLYMETALLIC OXIDE CATALYSTS FOR THE PARTIAL OXIDATION OF HYDROCARBONS INTO SYNTHESIS GAS

PARTICLES NUCLEUS - SHELL WITH CATALYTIC ACTIVITY

Method for coating a catalyst carrier containing two different partial structures with a catalytically active coating, and catalyst obtained thereby

MULTI-LAYERED WATER- SPLITTING PHOTOCATALYST HAVING A PLASMONIC METAL LAYER WITH OPTIMIZED PLASMONIC EFFECTS

PROCEDE DE PREPARATION D'UN SUPPORT DE CATALYSEUR METTANT EN OEUVRE DE LA GOMME XANTHANE ET SUPPORT OBTENU

L'INVENTION CONCERNE LA PREPARATION D'UN SUPPORT DE CATALYSEUR. LE PROCEDE DE L'INVENTION EST DU TYPE COMPRENANT LE DEPOT D'UNE COMPOSITION DE REVETEMENT SUR UN SUBSTRAT MONOLITHIQUE ET IL EST CARACTERISE EN CE QU'ON EFFECTUE LA MISE EN CONTACT DU SUBSTRAT ET DE LA COMPOSITION DE REVETEMENT EN PRESENCE D'UNE BIOGOMME OU D'UNE GOMME.

PHOTOCATALYSEURS CONTAINING FOAMS TRIDIMENTIONNELLES STRUCTUREES OUT OF CARBIDE AND IN PARTICULAR IN BETA-SIC

METHOD FOR LIMITING DUST EMISSION FROM GRAINS OF CATALYSTS

La présente invention a pour objet un procédé pour limiter l'émission de poussières à partir de grains de catalyseurs. Ce procédé comprend les deux étapes consécutives suivantes : - une première étape consistant à effectuer un traitement thermique des grains de catalyseur à une température supérieure ou égale à 100°C, immédiatement suivie de - une seconde étape consistant à effectuer un enrobage de la surface des grains de catalyseur, par mise en contact de ceux-ci avec un ou plusieurs matériaux d'enrobage ayant un point de fusion T supérieur ou égal à 45°C et qui sont introduits à l'état solide, ladite seconde étape étant effectuée sans nouvel apport de chaleur, à une température allant de T - 60°C à T - 1°C, tout en restant supérieure ou égale à 40°C.

PROCESS FOR THE PREPARATION OF SUPPORTED METAL CATALYSTS

La présente invention a pour objet un procédé de préparation d'un catalyseur métallique supporté, comprenant au moins un métal du groupe du platine déposé sur un support. Ce procédé comprend les étapes suivantes : a) dépôt électrolytique d'une couche de nickel sur un support métallique, puis b) dépôt électrolytique d'une couche supérieure d'un ou plusieurs métaux du groupe du platine. La présente invention a également pour objet le catalyseur métallique supporté obtenu par ce procédé, ainsi que l'utilisation de celui-ci dans des réactions d'hydrogénation d'hydrocarbures insaturés, notamment pour l'hydrogénation sélective des oléfines légères.

PHOTOCATALYTIC MULTILAYER METAL COMPOUND THIN FILM AND METHOD FOR PRODUCING SAME

supported hydrotreating catalysts having enhanced activity, method of hydrotreating and layering process supported catalyst

CATALYSTS FOR USE IN AMMONIA OXIDATION PROCESSES

A method is described for preparing a catalyst composition suitable for use in an ammonia oxidation process, comprising the steps of: (i) spraying a slurry containing a particulate mixed metal cobalt oxide on to the surface of a shaped support in a pan coater to form a coated support material, and (ii) drying and optionally calcining the coated support material to form the catalyst having the mixed metal cobalt oxide in a surface layer. Use of the egg-shell catalyst for generating nitric oxide by oxidation of ammonia with air, or for generating hydrogen cyanide by oxidation of ammonia with air in presence of methane.

CATALYTIC CONVERTERS, INSERT MATERIALS FOR CATALYTIC CONVERTERS, AND METHODS OF MAKING

Catalytic converters and insert materials for catalytic converters comprising metallized nanostructures coated on metal or ceramic honeycomb substrates are described. The nanostructures can be bonded directly to the channel walls of the metal or ceramic honeycomb substrates, and generally extend approximately 0.1 mm into the open pore volume of the substrates. The nanostructured coating can be used to support various catalyst formulations, where the nanostructured coating can provide advantages such as increasing reactivity of the catalysts by providing higher accessible surface area, decreasing light-off temperature through enabling smaller particle size of the catalysts, improving durability and lifetime of the catalysts through increased thermal stability, decreasing costs through reduced amounts of precious metals, and/or functioning as a filter for particulate matter.

Method and apparatus for removing undesirable chemical substances from gases, exhaust gases, vapors, and brines

The present invention relates to a method and pertinent apparatus for purifying gases, exhaust gases, vapors, and brines, which are contaminated with undesirable chemical substances or contain high concentrations of these substances, by means of photocatalytic reactions occurring on the surface of catalysts. The catalysts are situated in a fixed or fluidized bed on catalyst carriers. In fluidized beds, the catalysts themselves can serve as catalyst carriers. The substrates to be purified are fed through a closed system which contains the catalyst carriers and catalysts. In the fixed-bed catalytic method, the catalyst carrier/catalyst system continuously or discontinuously passes through a washing zone to remove the generated mineralization products. The reaction is induced by shortwave photons of wavelengths between 250 and 400 nm.

Method for improving the thermal shock resistance of a washcoated body

A method for producing a thermally shock resistant washcoated substrate involves introducing a buffer solution into the microcracks, and optionally the micropores of a porous sintered body, the pH of the buffer solution being at a predetermined value to result in the formation of a gel on contact of the buffer solution with the slurry which is to be subsequently applied, contacting the body with a washcoating slurry to form a gel at the interface of the buffer solution and slurry. Formation of the gel prevents the slurry from entering the microcracks. The body is then calcined at a temperature and for a time sufficient to form the washcoated substrate.

Catalyst comprising amorphous NiO on silica/alumina support and process for butene dimerization

The present invention provides for a catalyst composition which is effective for use in the production of dimer products and higher olefin products from lower olefins such as propylene and butene in high yields and with an average degree of branching in the dimer products of less than about 1.6 methyl groups per molecule, generally in the range of from about 1.0 to 1.4 methyl groups per molecule. The present invention also provides a process for producing such dimer and higher olefin products using the catalyst composition of this invention. The catalyst of the invention comprises an amorphous nickel oxide (NiO) present as a disperse substantial monolayer on the surfaces of a silica (SiO2) support, which support also contains minor amounts of an oxide of aluminum, gallium or indium such that the ratio of NiO to metal oxide present in the catalyst is within the range of from about 4:1 to about 100:1. The catalyst may be prepared by precipitating a water insoluble nickel salt onto the surfaces ...

Ceramic catalyst body

In a catalyst body using a direct support, this invention provides a ceramic catalyst body capable of preventing degradation resulting from aggregation of catalyst components, excellent in low thermal capacity and low pressure loss and having excellent catalytic performance and high durability. Catalyst particles prepared by supporting a catalyst metal such as Pt on intermediate substrate particles and an assistant catalyst of a metal oxide such as CeO2are directly supported on a ceramic support using cordierite, a part of constituent elements of which is replaced, as a substrate and capable of directly supporting the catalyst components on replacing elements so introduced. Even when the CeO2particles having low bonding strength move, the catalyst metal such as Pt is prevented from moving and aggregating because it is bonded to the intermediate substrate particles, and catalyst performance can be maintained for a long time.

Supported catalyst consisting of metal of the platinum group and obtained by means of controlled electroless deposition

The invention relates to a supported platinum group metal catalyst obtainable by controlled electroless deposition of at least one platinum group metal from a deposition solution which comprises i) at least one homogeneously dissolved platinum group metal compound, ii) a reducing agent and iii) at least one control agent selected from isopolyacids and heteropolyacids of niobium, tantalum, molybdenum, tungsten and vanadium or their salts.

Porous ceramic filters with catalyst coatings

Porous ceramic catalyst supports or filters to be provided with catalyst coatings via oxide washcoating processes are pre-coated with polymer barrier layers to prevent washcoat nanoparticle intrusion into the microcracked and/or microporous surfaces of the ceramics, the barrier coatings being formed of hydrocarbon polymers that are soluble or dispersible in polar media, capable of forming neutral or hydrophilic surfaces on porous ceramic supports, and completely vaporizable at moderate washcoat stabilization or catalyst activation temperatures.

LAYERED ALKALI IRIDATE, LAYERED IRIDIC ACID, AND IRIDIUM OXIDE NANOSHEET

Provided is a layered alkali iridate and a layered iridic acid to be used for producing iridium oxide nanosheets, and an iridium oxide nanosheet. A layered alkali iridate with composition of MxIrOy.nH2O (where M is a monovalent metal, x is 0.1 to 0.5, y is 1.5 to 2.5, and n is 0.5 to 1.5), wherein MxIrOy.nH2O has a layered structure. The M is potassium, and the layered alkali iridate has diffraction peaks at 29 diffraction angles of 13.0° and 26.0°. A layered iridic acid with a composition of HxIrOy.nH2O (where x is 0.1 to 0.5, y is 1.5 to 2.5, and n is 0 to 1), wherein HxIrOy.nH2O has a layered structure. This layered iridic acid has diffraction peaks at 2θ diffraction angles of 12.3° and 24.6°. A single crystalline iridium oxide nanosheet having a thickness of 3 nm or less.

PHOTOCATALYTIC COMPOSITION FOR WATER PURIFICATION

The present invention refers to lightweight and settable photocatalytic compositions and solid composites; methods of preparing the compositions and solid composites; and their use in water purification. The compositions are comprised of photocatalysts such as titanium dioxide (TiO 2 ) and zinc oxide (ZnO), lightweight glass bubbles, and a hydraulic cementing binder. The lightweight and settable photocatalytic compositions can be formed into lightweight photocatalytic solid composites and/or structures by mixing with water and moist curing. This invention also describes relatively simple, fast, and cost effective methodologies to photodope the TiO 2 —ZnO compositions and composites with silver (Ag), to enhance and extend the photocatalytic activity from the ultraviolet into the visible light spectrum. The lightweight and settable TiO 2 —ZnO and Ag—TiO 2 —ZnO compositions are used in making solids, structures, coatings, and continuous or semi-continuous water purification panels for purifying contaminated water.

CATLYTIC CONVERTERS HAVING NON-LINEAR FLOW CHANNELS

Disclosed is a honeycomb catalyst substrate core having geometrically non-linear flow channels. In an embodiment, the honeycomb catalyst substrate core includes helical flow channels. In another embodiment, the honeycomb catalyst substrate core includes sinusoidal flow channels. In yet another embodiment, the honeycomb catalyst substrate core includes helical plus sinusoidal flow channels. The honeycomb catalyst substrate core comprises a plurality of parallel non-linear flow channels formed along a longitudinal axis of symmetry of the catalyst substrate core, each non-linear flow channel configured such that a turbulent vortical flow occurs during engine exhaust gas flow. Also disclosed is a method for manufacturing a ceramic honeycomb having non-linear flow channels, comprising the steps extrusion soft ceramic material through a die whilst the die moves through six degrees of freedom along its axis of symmetry. Disclosure includes a method for manufacturing a ceramic honeycomb having non-linear flow channels using three-dimensional printing. 1. A honeycomb catalyst substrate core , comprising:a plurality of parallel flow channels formed along a longitudinal axis of symmetry of said catalyst substrate core, each flow channel configured into a helix;a washcoat within which said catalyst is embedded, said washcoat being applied over said catalyst substrate;a mat cover that forms a skin over said honeycomb; anda housing that forms a protective outer shell over said honeycomb catalyst substrate core, said housing having an inlet and an outlet on opposite ends of said honeycomb catalyst substrate core, said inlet and outlet being configured for exhaust gases to pass through said catalyst substrate core.2. The honeycomb catalyst substrate core according to claim 1 , wherein said catalyst substrate core comprises a ceramic material.3. The honeycomb catalyst substrate core according to claim 1 , wherein said catalyst substrate core includes a metal.4. The honeycomb ...

EXHAUST GAS PURIFYING CATALYST AND METHOD FOR PRODUCING SAME

Disclosed is an exhaust gas purifying catalyst in which grain growth of a noble metal particle supported on a support is suppressed. Also, disclosed is a production process of an exhaust gas purifying catalyst, by which the above exhaust gas purifying catalyst can be produced. The exhaust gas purifying catalyst comprises a crystalline metal oxide support and a noble metal particle supported on the support, wherein the noble metal particle is epitaxially grown on the support, and wherein the noble metal particle is dispersed and supported on the outer and inner surfaces of the support. The process for producing an exhaust gas purifying catalyst comprises masking, in a solution, at least a part of the surface of a crystalline metal oxide support by a masking agent, introducing the support into a noble metal-containing solution containing a noble metal, and drying and firing the support and the noble metal-containing solution to support the noble metal on the support.

PROCESS FOR PREPARING CARBOXYLIC ACID SALTS AND CATALYSTS USEFUL IN SUCH PROCESS

СПОСОБ АКТИВАЦИИ КАТАЛИЗАТОРОВ ГИДРООБРАБОТКИ

Настоящее изобретение относится к применению в способе активации in situ катализатора гидрообработки для пассивации кислотных центров катализатора гидрообработки. Описано применение в способе активации in situ катализатора гидрообработки для пассивации кислотных активных центров катализатора гидрообработки, по меньшей мере, одного соединения азота, имеющего, по меньшей мере, две из следующих характеристик: a) содержание азота по массе в пределах от 15 до 35% масс. по отношению к общей массе соединения азота; b) количество атомов азота в пределах от 2 до 20 атомов азота на молекулу; c) температуру кипения в пределах от 140°C до 300°C; и d) указанное соединение азота находится в жидкой форме при комнатной температуре и при атмосферном давлении; причем указанное, по меньшей мере, одно соединение азота обязательно имеет характеристику b). Технический результат – усовершенствование способа активации катализатора гидрообработки. 2 н. и 11 з.п. ф-лы.

СПОСОБ ОГРАНИЧЕНИЯ ВЫБРОСА ПЫЛИ ИЗ ЗЕРЕН КАТАЛИЗАТОРОВ

Объектом изобретения является способ ограничения выброса пыли из зерен катализаторов. Этот способ содержит две следующие последовательные стадии. Первая стадия заключается в осуществлении термообработки зерен катализатора при температуре, больше или равной 100°С. Вторая стадия заключается в осуществлении нанесения защитного покрытия на поверхность зерен катализатора контактированием их с одним или несколькими материалами для нанесения защитного покрытия, имеющими температуру плавления Т, больше или равную 45°С, которые вводят в твердом состоянии. При этом указанную вторую стадию осуществляют без новой подачи тепла при температуре, изменяющейся в интервале от Т-60°С до Т-1°С, но все еще остающейся больше или равной 40°С. Технический результат - значительное снижение образования пыли и, в частности, мелких частиц микрометрического размера. 16 з.п. ф-лы, 7 пр.

ПРЕДШЕСТВЕННИК КАТАЛИЗАТОРА ИЛИ КЕРАМИЧЕСКОЙ МЕМБРАНЫ, СПОСОБ ИХ ПОЛУЧЕНИЯ

Катализаторная или мембранная система, содержащая теплостойкий высокопористый слой, нанесенный на менее пористый или непористый слой носителя, в особенности на внутреннюю поверхность монолитного или спеченного металлического тела, во внутренние поры α -Al2O3, угольного носителя или на поверхность керамической мембраны. Система катализатора может быть изготовлена нанесением раствора подходящего металлоорганического соединения на внутреннюю поверхность слоя носителя и затем преобразованием металлоорганического соединения в оксид. В полученный таким образом высокопристый слой каталитически активный материал может быть введен обычным образом. 2 с. и 7 з.п. ф-лы, 5 ил.

КАТАЛИЗАТОР И СПОСОБ ПОЛУЧЕНИЯ КАТАЛИЗАТОРА

Изобретение касается катализатора (2) для очистки выхлопных газов с пористым керамическим носителем (4), имеющим пористость, которая образована порами в по меньшей мере части керамического носителя (4), и который, кроме того, имеет каталитически активное покрытие (10) из пористого оксида, нанесенное на керамический носитель (4). Каталитически активное покрытие из пористого оксида имеет толщину (d1) слоя, при этом носитель (4) имеет постоянную каталитически неактивную пропитку (12), содержащую по меньшей мере один каталитически неактивный неорганический компонент, не имеющий каталитической активности в отношении очистки выхлопных газов. Постоянная неактивная пропитка (12) присутствует в порах керамического носителя (4) в области с пониженной пористостью под поверхностью керамического носителя (4), и где при этом носитель (4) представляет собой монолитный компонент и состоит из каталитически активного материала, и только подобласть монолитного компонента снабжена пропиткой (12). Изобретение ...

КАТАЛИЗАТОР ОЧИСТКИ ВЫХЛОПНОГО ГАЗА

Изобретение относится к катализатору очистки выхлопного газа, содержащему два или больше каталитических слоев покрытия на субстрате, в котором каждый каталитический слой покрытия содержит частицы катализатора, имеющие состав, отличающийся от прилежащего каталитического слоя покрытия. При этом в верхнем каталитическом слое покрытия средняя толщина слоя покрытия находится в диапазоне от 25 мкм до 160 мкм, пористость, измеренная способом взвешивания в воде, находится в диапазоне от 50 до 80% от объема, и поры с высоким относительным удлинением, имеющие относительное удлинение, равное 5 или больше, занимают от 0,5 до 50% от общего объема пустот, и пора с высоким относительным удлинением имеет эквивалентный диаметр окружности от 2 мкм до 50 мкм на изображении поперечного сечения каталитического слоя покрытия, перпендикулярного направлению потока выхлопного газа, и имеет среднее относительное удлинение от 10 до 50. Технический результат изобретения заключается в увеличении эффективности очистки ...

СПОСОБ ИЗГОТОВЛЕНИЯ ВЫСОКО ДОПИРОВАННЫХ АЗОТОМ МЕЗОПОРИСТЫХ УГЛЕРОДНЫХ КОМПОЗИТОВ

СПОСОБ ПРИГОТОВЛЕНИЯ ОКСИДНО-ПОЛИМЕТАЛЛИЧЕСКИХ КАТАЛИЗАТОРОВ НА ОСНОВЕ ЖАРОПРОЧНЫХ СПЛАВОВ ДЛЯ ПАРЦИАЛЬНОГО ОКИСЛЕНИЯ УГЛЕВОДОРОДОВ В СИНТЕЗ-ГАЗ

Изобретение относится к способу приготовления оксидно-полиметаллических катализаторов, содержащих металлы платиновой группы, для окислительно-паровой конверсии углеводородов с получением оксида углерода и водорода. Способ включает обработку NiO и COOрастворами нитратов Al, Се, Zr и соединений палладия Pd(NH)Cl, платины Н[PtCl]·6НО и родия Н[RhCl], с последующей сушкой, закоксовывание полученного материала в токе метана при 550°C, получение пасты из данного материала, псевдобемита и тетраизопропоксилана, заполнение пор пенонихрома суспензией из полученного материала, удаление воды при 80°C, прокаливание 3 часа в атмосфере аргона при 1300°C, удаление углерода парами воды при 600°C в течение 3 часов. Технический результат заключается в создании высокоэффективного гетерогенного катализатора. 3 з.п. ф-лы, 7 табл., 4 пр.

КАТАЛИЗАТОРЫ ГИДРООЧИСТКИ НА ПОДЛОЖКАХ, ОБЛАДАЮЩИЕ ПОВЫШЕННОЙ АКТИВНОСТЬЮ

... 1. Катализатор на подложке, содержащий носитель, фосфор, по меньшей мере один металл группы VIB, по меньшей мере один металл группы VIII и полимер, при этоммолярное соотношение между фосфором и металлом группы VIB составляет от около 1:1,5 до менее чем около 1:12,молярное соотношение между металлом группы VIB и металлом группы VIII составляет от около 1:1 до около 5:1, иполимер имеет углеродный скелет и содержит функциональные группы, содержащие по меньшей мере один гетероатом.2. Катализатор по п. 1, отличающийся тем, что указанный носитель представляет собой оксид кремния, оксид алюминия, оксид кремния-оксид алюминия, оксид алюминия с диспергированным в нем оксидом кремния-оксидом алюминия, покрытый оксидом алюминия оксид кремния или покрытый оксидом кремния оксид алюминия, и/или отличающийся тем, что функциональные группы полимера представляют собой группы карбоновой кислоты.3. Катализатор по п. 1, отличающийся тем, что молярное соотношение между фосфором и металлом группы VIB составляет ...

Catalyst, useful for decomposition of nitrous oxide, comprises a carrier material made of alpha or gamma aluminum oxide and a coating containing rhodium as active component

Catalyst comprises a carrier material (2) made of alpha - or gamma -aluminum oxide and a coating (3) applied on the carrier material. The coating contains rhodium as the active component. An independent claim is also included for an apparatus for the decomposition of nitrous oxide in a gas stream, comprising a gas carrying pipe having catalyst arranged in it.

New catalyst comprising a catalytic active component containing e.g. a mixture of gold and iron(III)oxide and a noble metal comprising e.g. platinum, useful to reduce carbon monoxide content in tobacco smoke and treating tobacco

Catalyst comprising a catalytic active component is new, where the catalytic active component comprises a mixture of gold and iron(III)oxide, a mixture of gold and tricobalt tetraoxide and/or a mixture of gold and nickel(II)oxide and further at least one noble metal comprising platinum, palladium, rhodium, iridium, osmium, ruthenium or rhenium. An independent claim is included for a filter article for tobacco smoking article comprising the catalytic active component and a casing.

Katalysator oder Systeme von Membranvorstufe, Katalysator oder Membransysteme und Verfahren zur Herstellung derselben

Verfahren zur Gewinnung von Edelmetall-Katalysator auf einem metallischen Träger

Article for securing a catalyst substrate

An aftertreatment component for use in an exhaust aftertreatment system. The aftertreatment component comprises an aftertreatment substrate and a compressible material. The compressible material may be formed from a plastic thermoset, a rubberized material, or a metal foil which permits for the selective expansion of the substrate within the compressible material, while also reducing cost and manufacturing complexity. In various embodiments, the aftertreatment substrate and the compressible materials may be formed separately and coupled to each other, or they may be formed concurrently via coextrusion.

Improvements relating to brazing alloys

A brazing alloy for use in the manufacture of a semi-conductor device has the following percentage composition:- Cu 20-40 Pd 5-20 In, Sn or Ga 4-10 Ag the balance.

Method for coating a filter substrate

Article for securing a catalyst substrate

Filter

Improvements in coated materials

Method

Porous manganese-containing fenton catalytic material and preparation method and use thereof

A porous manganese-containing Fenton catalytic material is described. The catalyst comprises particles with a cluster structure wherein particles with the cluster structure include a porous-structure calcium oxide and two-dimensional nanosheets of a Mn-Ca compound on a surface of the porous-structure calcium oxide. Preferably the particles have a particle size between 5 and 10 µm. Preferably the two-dimensional nanosheets are between 3 and 4 nm thick. Preferably the catalytic material is formed by calcining a marine biomass shell material to obtain a porous CaO, mixing this with an anhydrous alcohol solvent under a protective atmosphere and mixing a divalent manganese source into the dispersion to obtain the porous manganese-containing Fenton catalytic material.

PROCEDURE FOR THE PRODUCTION OF CARBONIC ACID SALTS AND CATALYSTS USABLE FOR SUCH PROCEDURE

PROCEDURE FOR THE PRODUCTION OF CARBONIC ACID SALTS AND CATALYSTS USABLE FOR SUCH PROCEDURE

METAL FOIL CARRIER CATALYST.

Diesel exhaust gas oxidation catalyst, and method for purifying diesel exhaust gas by using same

A diesel exhaust gas oxidation catalyst, which is configured to purify exhaust gas from a diesel engine, includes: an alumina-based carrier in which a content of alumina is 40 mass% or higher; Pt supported on the alumina-based carrier; Pd supported on the alumina-based carrier; and at least one type of added element that is selected from the group consisting of alkali metal elements and alkaline earth metal elements and that is supported on the alumina-based carrier. A supported quantity of the Pt is 0.1 to 5 parts by mass relative to 100 parts by mass of the alumina-based carrier. A molar ratio obtained by dividing a supported quantity of the Pd by the supported quantity of the Pt is 0.1 to 1.5. A molar ratio obtained by dividing a supported quantity of the added element by the supported quantity of the Pt is 1 to 12.

ATTRITION RESISTANT CATALYSTS

Catalysts having improved attrition resistance are produced by incorporating a substantially uniform appearing coating of completely calcined, catalytically active oxide material onto an inert porous support containing sorbed aqueous silica sol. Such catalysts are useful in the gas phase oxidation of unsaturated aldehydes to unsaturated acids, especially acrolein to acrylic acid.

TREATMENT OF MONOLITHIC CATALYST SUPPORTS

METHOD OF MANUFACTURING OPEN-CELL BODIES AND BODIES MANUFACTURED USING SAID METHOD

In the method in accordance with the invention of manufacturing an open-cell body from a metal or ceramic material, a procedure is followed such that individual parts of an open pore plastic in a size which corresponds to the size of the bodies to be manufactured while taking account of the shrinkage on a sintering or an open pore plastic element having predetermined break points which take account of the size and geometrical design of bodies to be manufactured while considering the shrinkage in the sintering are/is infiltrated and coated with a suspension in which, in addition to a liquid, at least one powdery material is contained with which the bodies are manufactured. Organic components are expelled after a first heat treatment. Subsequently, a sintering is carried out in which open-cell bodies are obtained, wherein the parts of porous plastic provided with the suspension are separated before the first heat treatment and/or sintering or wherein, after the sintering, the open-cell element ...

CATALYSTS, METHODS OF PREPARATION OF CATALYST, METHODS OF DEOXYGENATION, AND SYSTEMS FOR FUEL PRODUCTION

Presented are one or more aspects and/or one or more embodiments of catalysts, methods of preparation of catalyst, methods of deoxygenation, and methods of fuel production.

PROCESS FOR IMPROVING THE THERMAL SHOCK RESISTANCE OF MONOLITHIC CATALYSTS

Monolithic catalysts are improved in their thermal shock resistance if, before application of the catalyst components, the ceramic monolithic support is precoated with a fusible and burnable organic filler from a dispersion in very fine solid particles. The support is heated beyond the melting point of the filler, the catalyst components are subsequently applied and the filler is then burnt off.

IMPROVEMENTS IN COATED MATERIALS

A substantially complete coating of a zeolite onto a material such as catalyst p articles can be achieved by treating the material prior to or simultaneously with zeolite formation, with a polyelectrolyte. Copper catalyst systems show good hydrogen storage whils t blocking access of hydrocarbons to the catalyst.

CORE-SHELL PARTICLES WITH CATALYTIC ACTIVITY

CATALYST CARRIERS

PHOTOCATALYTIC ELEMENT FOR CLEANING AND DECONTAMINATION OF AIR AND WATER AND METHOD OF ITS MANUFACTURE

PHOTOCATALYTIC ELEMENT FOR PURIFICATION AND DISINFECTION OF AIR AND WATER AND METHOD FOR THE PRODUCTION THEREOF

Method of producing photocatalyst layer

A method of producing a photocatalyst layer can increase a photocatalyst effect without increasing light irradiation energy for activation. The method includes: an irradiation process of irradiating an ultraviolet ray on a titanium oxide layer formed on a substrate, an aqueous photocatalyst solution application process of applying an aqueous photocatalyst solution containing fine particles on the titanium oxide layer to form a photocatalyst layer, and a drying process of drying the photocatalyst layer, wherein the aqueous photocatalyst solution application process is a process of applying the aqueous photocatalyst solution on the titanium oxide layer in such a way that a thickness of the aqueous photocatalyst solution is ununiform.

Photocatalyst-coated body and photocatalytic coating liquid therefor

A photocatalyst-coated body comprises a substrate and a photocatalyst layer provided on the substrate, the photocatalyst layer comprising photocatalyst particles of 1 part or more by mass and less than 20 parts by mass, inorganic oxide particles of 70 parts or more by mass and less than 99 parts by mass, and the dried substance of a hydrolyzable silicone of zero parts or more by mass and less than 10 parts by mass, provided that a total amount of the photocatalyst particles, the dried substance of the inorganic oxide particles and the hydrolyzable silicone is 100 parts by mass in terms of silica. The inorganic oxide particles have a number average particle diameter ranging from 10 nm or more to less than 40 nm calculated by measuring lengths of 100 particles randomly selected from particles located within a visible field magnified 200,000 times by a scanning electron microscope.

Method of making a catalyst

Presented are one or more aspects and/or one or more embodiments of catalysts, methods of preparation of catalyst, methods of deoxygenation, and methods of fuel production.

Methods of deoxygenation and systems for fuel production

Presented are one or more aspects and/or one or more embodiments of catalysts, methods of preparation of catalyst, methods of deoxygenation, and methods of fuel production.

Metal nanoparticle deposited inorganic nanostructure hybrids, uses thereof and processes for their preparation

This invention relates to a hybrid component comprising at least one nanoparticle of inorganic layered compound (in the form of fullerene-like structure or nanotube), and at least one metal nanoparticle, uses thereof as a catalyst, (e.g. photocatalysis) and processes for its preparation.

METHOD FOR PREPARING REFRACTORY ALLOY-BASED POLYMETALLIC OXIDE CATALYSTS FOR THE PARTIAL OXIDATION OF HYDROCARBONS INTO SYNTHESIS GAS

The invention relates to a method for preparation of oxide-polymetallic catalysts containing platinum-group metals for steam-oxidative conversion to obtain carbon monoxide and hydrogen. The method comprises treatment of NiO and COOby solutions of Al, Ce, Zr nitrates and palladium (Pd(NH)Cl), platinum (H[PtCl]·6HO) and rhodium (H[RhCl]) compounds followed by drying, carbonization of the obtained material in a methane flow at 550° C., preparation of slurry from this material, pseudo-boehmite and tetraisopropoxysilane, filling foam nichrome pores with obtained material suspension, elimination of water at 80° C., calcinating during 3 hours in an atmosphere of argon at 1300° C., elimination of carbon by water vapors at 600° C. during 3 hours. The technical result is development of a highly efficient heterogeneous catalyst. 3 material claims, 7 tables, 4 examples. 1. The method for preparation of oxide-polymetallic catalysts containing platinum-group metals for steam-oxidative conversion of hydrocarbons to obtain carbon monoxide and hydrogen characterizes in that , it includes treatment of NiO and CoOby solutions of Al , Ce , Zr nitrates and palladium (Pd(NH)Cl) , platinum (H[PtCl]·6HO) and rhodium (H[RhCl]) compounds followed by drying , carbonization of the obtained material in a methane flow at 550° C. , preparation of slurry from this material , pseudo-boehmite and tetraisopropoxysilane , filling foam nichrome pores with obtained material suspension , elimination of water at 80° C. , calcinating during 3 hours in an atmosphere of argon at 1300° C. , elimination of carbon by water vapors at 600° C. during 3 hours.2. A method of characterized in that NiO and CoOtreatment is carried out by a solution with total concentration of 5-20%.3. A method of characterizes in that carbonization is carried out till the full reduction of NiO and CoOoxides and palladium claim 1 , platinum and rhodium compounds to the metals and accumulation of 5-10% of carbon.4. A method of ...

Article of Manufacture for Securing a Catalyst Substrate

An aftertreatment component for use in an exhaust aftertreatment system. The aftertreatment component comprises an aftertreatment substrate and a compressible material. The compressible material may be formed from a plastic thermoset, a rubberized material, or a metal foil which permits for the selective expansion of the substrate within the compressible material, while also reducing cost and manufacturing complexity. In various embodiments, the aftertreatment substrate and the compressible materials may be formed separately and coupled to each other, or they may be formed concurrently via coextrusion. 113.-. (canceled)14. A method comprising:passing a heated exhaust stream into a aftertreatment substrate;thermally expanding the aftertreatment substrate into a compressible material defining the aftertreatment substrate; andas a result of thermally expanding the aftertreatment substrate into the compressible material defining the aftertreatment substrate, at least partially compressing corrugations of the compressible material.15. The method of claim 14 , further comprising confining the compressible material within an outer skin defining the compressible material.16. The method of claim 14 , further comprising positioning the aftertreatment substrate within the compressible material claim 14 , and applying a catalyst washcoat to the aftertreatment substrate after the positioning.17. The method of claim 16 , further comprising applying at least a portion of the catalyst washcoat to a substrate side of the compressible material.18. The method of claim 14 , wherein the compressible material is defined in part by an outer skin claim 14 , and wherein the compressible material is at least partially compressed between the outer skin and the aftertreatment substrate.19. The method of claim 14 , wherein the compressible material comprises a polymer-based thermoset.20. The method of claim 14 , wherein the compressible material comprises a thermoplastic material.21. The method ...

Article of Manufacture for Securing a Catalyst Substrate

An aftertreatment component for use in an exhaust aftertreatment system. The aftertreatment component comprises an aftertreatment substrate and a compressible material. The compressible material may be formed from a plastic thermoset, a rubberized material, or a metal foil which permits for the selective expansion of the substrate within the compressible material, while also reducing cost and manufacturing complexity. In various embodiments, the aftertreatment substrate and The compressible materials may be formed separately and coupled to each other, or they may be formed concurrently via coextrusion. 1. An aftertreatment component of an exhaust aftertreatment system , comprising:an aftertreatment substrate;a compressible material coupled to an outer surface the aftertreatment substrate; anda catalyst washcoat disposed on the aftertreatment substrate, wherein the catalyst washcoat is applied to the aftertreatment substrate after the compressible material is coupled to the aftertreatment substrate.2. The aftertreatment component of claim 1 , wherein the compressible material comprises a metal foil.3. The aftertreatment component of claim 1 , further comprising a catalyst washcoat disposed on the aftertreatment substrate.4. The aftertreatment component of claim 3 , wherein the catalyst washcoat is disposed on a substrate side of the compressible material.5. The aftertreatment component of claim 1 , further comprising an outer skin claim 1 , the outer skin defining the compressible material.6. The aftertreatment component of claim 5 , wherein the outer skin at least partially compresses the compressible material against the aftertreatment substrate.7. The aftertreatment component of claim 6 , wherein the outer skin applies a selected closure force to the aftertreatment substrate through the compressible material.8. The aftertreatment component of claim 1 , wherein the compressible material is in tension claim 1 , and wherein corrugations in the compressible material ...

Photocatalytic element for purification and disinfection of air and water and method for the production thereof

The invention relates to the purification and disinfection of air and water. A photocatalytic element consists of sintered glass beads with a pore volume fraction from 20% to 40% and a pore size from 0.1 to 0.5 mm, the surface of which is coated with a titanium dioxide powder, having a specific surface area of 150-400 m 2 /g, at the rate of 0.5-2% relative to the total mass of the photocatalytic element. The surface of the glass beads has a relief shape with a relief depression of 0.5-10 pm. The method for producing the photocatalytic element comprises sintering the glass beads at a temperature that is 5-20° C. higher than the glass softening temperature, modifying the bead surface with chemical etching agents, and coating the bead surface with the titanium dioxide powder from a water suspension at a pH of 2.9±0.1.

METHOD FOR PREPARING HIGHLY NITROGEN-DOPED MESOPOROUS CARBON COMPOSITES

Some embodiments are directed to a new methodology aimed at preparing highly N-doped mesoporous carbon macroscopic composites, and their use as highly efficient heterogeneous metal-free catalysts in a number of industrially relevant catalytic transformations. 1. A method of preparing macroscopic composites made of a macroscopic support coated with a thin layer of highly nitrogen-doped mesoporous carbon phase (active phase) , said method comprising:{'sub': 4', '2', '3, '(a) providing an aqueous solution of (i) (NH)CO; (ii) a carbohydrate as carbon source, selected from aldose monosaccharides and glycosilated forms thereof, disaccharides and oligosaccharides or dextrine deriving from biomass conversion, and (iii) a carboxylic acid source selected from citric acid, and any other mono-, di-, tri-, and poly-carboxylic acid or their ammonium mono-, di-, tri- and poly-basic forms;'} [ (a1) providing an aqueous solution of citric acid and a carbohydrate as carbon source, selected from aldose monosaccharides and glycosilated forms thereof, disaccharides and oligosaccharides;', '(c1) prior to step (c), immerging/soaking or impregnating the macroscopic support of step (b) in the aqueous solution of step (a1) for a suitable amount of time;', '(d1) optionally removing the immerged macroscopic support from the aqueous solution of step (a1) if an excess aqueous solution is used in step (c1);', '(e1′) optionally subjecting the resulting macroscopic support to a gentle thermal treatment (drying) under air at low temperatures from 45 to 55° C., preferably 50° C.±3° C.;', '(e1) subjecting the resulting macroscopic support to a first thermal treatment (drying) under air at moderate temperatures from 110-150° C.±5° C., preferably 130° C.±5° C.; and', '(f1) subjecting the thermally treated (dried) macroscopic support to a second thermal treatment under inert atmosphere at higher temperatures from 600-800° C.±10° C., preferably 600° C.±5° C.; thereby generating a macroscopic composite ...

METHOD

The present invention relates to methods of immobilising metals on polymeric surfaces using surfactants and to products that can be formed by such methods. Polymer substrates with metal immobilised on the surface are very useful in a variety of applications. The metal is usually in the form of a nanoparticle. A major use of the invention is in catalysts. The invention can also be used in medical applications, such as to make antimicrobial surfaces. 1. A method of immobilising metals on a polymeric substrate , the method comprising the steps of:(1) providing a polymeric substrate that has a surface;(2) treating the surface with an aqueous surfactant solution under conditions that lead to surfactant being partially absorbed into the surface; then(3) adding to the surface a metal salt solution, so that ions of the metal salt become associated with partially absorbed surfactant; and(4) adding to the metal salt solution on the surface a reducing agent, so that metal ions in the metal salt solution are reduced to metal particles.2. A method according to claim 1 , wherein the surface of the polymeric substrate is hydrophobic.3. A method according to claim 1 , wherein the polymeric substrate is a polyolefin claim 1 , preferably wherein the polymeric substrate is polypropylene or polyethylene.4. A method according to claim 1 , wherein the polymeric substrate is microporous.5. A method according to claim 1 , wherein the aqueous surfactant solution comprises a cationic surfactant claim 1 , preferably wherein the aqueous surfactant solution comprises benzalkonium chloride claim 1 , benzyl-dodecyl-dimethylammonium bromide claim 1 , benzyl dimethyloctadecylazanium chloride claim 1 , benzylhexadecyldimethylazanium chloride or thonzonium bromide.6. A method according to claim 1 , wherein the metal salt solution comprises an iron claim 1 , nickel claim 1 , platinum claim 1 , rhenium claim 1 , vanadium claim 1 , rhodium or silver salt claim 1 , preferably wherein the metal salt ...

APPARATUS FOR COATING A FILTER SUBSTRATE

An apparatus of coating a filter substrate comprising a plurality of channels and an apparatus is disclosed. The apparatus comprises: (i) a containment means for receiving a pre-determined amount of the liquid; and (ii) a liquid dosing head arranged to dispense the pre-determined amount of the liquid into the containment means over an upper end of the filter substrate. The containment means is locatable at an upper end of the filter substrate; and the liquid dosing head comprises a plurality of apertures for dispensing the liquid onto the upper end of the filter substrate. 2. The apparatus according to further comprising (iii) means for applying a vacuum to a lower end of the filter substrate.3. The apparatus according to claim 1 , wherein the pre-determined amount of the liquid is a pre-determined volume of the liquid.4. The apparatus according to claim 1 , wherein the pre-determined amount of the liquid is a single dose of the liquid.5. The apparatus according to claim 1 , wherein the containment means comprises a sealing means for preventing the liquid from flowing from the upper end face of the filter substrate and onto an exterior side surface of the filter substrate claim 1 , wherein the sealing means comprises at least one inflatable collar.6. The apparatus according to claim 1 , wherein the containment means comprises a template for covering an area or areas of an upper end face of the filter substrate.7. The apparatus according to claim 1 , wherein the filter substrate comprises a plurality of channels claim 1 , wherein each channel has an open end and a closed end.8. The apparatus according to claim 2 , wherein the pre-determined amount of the liquid is a pre-determined volume of the liquid.9. The apparatus according to claim 2 , wherein the pre-determined amount of the liquid is a single dose of the liquid.10. The apparatus according to claim 2 , wherein the containment means comprises a sealing means for preventing the liquid from flowing from the upper ...

SILICON-TITANIUM DIOXIDE-POLYPYRROLE THREE-DIMENSIONAL BIONIC COMPOSITE MATERIAL BASED ON HIERARCHICAL ASSEMBLY AND USE THEREOF

The invention relates to a three-dimensional bionic composite material based on refection elimination and double-layer P/N heterojunctions. The preparation method of the composite material comprises: (1) anisotropically etching a silicon wafer with an alkaline solution, to form compactly arranged tetragonal pyramids on the surface of the silicon wafer; (2) performing hydrophilic treatment on the silicon wafer, growing TiO2 crystal seeds on the surface of the silicon wafer, and calcining the silicon wafer in a muffle furnace; (3) putting the silicon wafer obtained in the step (2) into a reaction kettle, and growing TiO2 nano-rods on the side walls of silicon cones by a hydrothermal synthesis method; and (4) depositing PPY nano-particles on the TiO2 nano-rods. The composite material has good refection elimination performance and efficient photogenerated charge separation capability, and is applicable in fields of photo-catalysis, photoelectric conversion devices, solar cells and the like. 1. A silicon-titanium dioxide-polypyrrole three-dimensional bionic composite material based on hierarchical assembly , comprising an ordered hierarchy (Si/TiO/PPY) of monocrystalline silicon (Si) , titanium dioxide (TiO) and polypyrrole (PPY) ,wherein Si is 100-type monocrystalline silicon with a tapered microstructure surface and is a P-type semiconductor, and has compactly arranged silicon cone structure of tetragonal pyramids with a height of 4-10 μm;{'sub': 2', '2, 'TiOis TiOnano-rods of rutile phase and is an N-type semiconductor, and is quadrangular with a height of 500-4000 nm and a diameter of 40-250 nm, and orderly and vertically grown on the side walls of the silicon cones;'}{'sub': '2', 'PPY is polypyrrole nano-particles with a diameter of 10-60 nm and is a P-type semiconductor, and is uniformly grown on the surfaces of the TiOnano-rods;'}{'sub': 2', '2', '2, 'in the Si/TiO/PPY three-dimensional bionic composite material, double P/N heterojunctions are formed on interfaces ...

METHOD FOR IMPROVING SOLAR ENERGY CONVERSION EFFICIENCY USING METAL OXIDE PHOTOCATALYSTS HAVING ENERGY BAND OF CORE-SHELL FOR ULTRAVIOLET RAY AND VISIBLE LIGHT ABSORPTION AND PHOTOCATALYSTS THEREOF

The present invention discloses a method for improving solar energy conversion efficiency using metal oxide photocatalysts having an energy band of core-shell structure for ultraviolet (UV) ray and visible light absorption, comprising a first process of forming a nanoparticle thin film layer; a second process of preparing a core-shell metal oxide on metal oxide nanoparticles by a plasma reaction under a hydrogen and nitrogen gas atmosphere, and a third process of depositing a transition metal on surfaces of core-shell metal oxide nanoparticles to produce a photocatalyst for energy conversion. A great amount of oxygen vacancies is formed in a shell region by the core-shell metal oxide to achieve effects of improving transfer ability of electron-hole pairs excited by light, and extending a wavelength range of absorbable light to a visible light region by changing a band-gap structure. 1. A method for improving solar energy conversion efficiency using a metal oxide photocatalyst which has a core-shell energy band structure for absorption of ultraviolet (UV) ray and visible light , comprising:a first process of performing heat treatment on a metal oxide semiconductor having a band-gap to form a nanoparticle thin film layer;a second process of contacting a plasma ball including mixed gas in a substitutional NH or NHx radical state by a plasma reaction under a hydrogen and nitrogen gas atmosphere with a surface of a metal oxide particle to simultaneously generate a NH functional group and oxygen vacancies formed by hydrogenation, so as to prepare a core-shell metal oxide capable of absorbing UV ray and visible light; anda third process of further depositing a transition metal on surfaces of core-shell metal oxide nanoparticles to produce a photocatalyst of metal oxide-transition metal having a HN-core-shell structure for energy conversion.2. The method according to claim 1 , wherein the metal oxide and the transition metal include at least one element selected from Ti ...

METHOD FOR ACTIVATING A FIXED CATALYST BED WHICH CONTAINS MONOLITHIC SHAPED CATALYST BODIES OR CONSISTS OF MONOLITHIC SHAPED CATALYST BODIES

A process for activating a fixed catalyst bed is disclosed. The fixed catalyst bed includes monolithic shaped catalyst bodies or include monolithic shaped catalyst bodies including at a first metal selected from Ni, Fe, Co, Cu, Cr, Pt, Ag, Au and Pd, and a second component selected from Al, Zn and Si. The fixed catalyst bed, for activation, is treated with an aqueous base having a strength of not more than 3.5% by weight. The base is selected from alkali metal hydroxides, alkaline earth metal hydroxides and mixtures thereof. The fixed catalyst bed has a temperature gradient during the activation and the temperature differential between the coldest point in the fixed catalyst bed and the warmest point in the fixed catalyst bed is kept at not more than 50 K. 1. A process for activating a fixed catalyst bed comprising monolithic shaped catalyst bodies or consisting of monolithic shaped catalyst bodies comprising at least one first metal selected from Ni , Fe , Co , Cu , Cr , Pt , Ag , Au and Pd , and comprising at least one second component selected from Al , Zn and Si , and wherein the fixed catalyst bed , for activation , is subjected to a treatment with an aqueous base having a strength of not more than 3.5% by weight , wherein the base is selected from alkali metal hydroxides , alkaline earth metal hydroxides and mixtures thereof , and wherein the fixed catalyst bed has a temperature gradient during the activation and the temperature differential between the coldest point in the fixed catalyst bed and the warmest point in the fixed catalyst bed is kept at not more than 50 K.2. A process for providing a reactor comprising an activated fixed catalyst bed , in whicha) a fixed catalyst bed comprising monolithic shaped catalyst bodies or consisting of monolithic shaped catalyst bodies comprising at least one first metal selected from Ni, Fe, Co, Cu, Cr, Pt, Ag, Au and Pd, and comprising at least one second component selected from Al, Zn and Si, is introduced into a ...

METHOD FOR PROVIDING A CATALYTICALLY ACTIVE FIXED BED FOR HYDROGENATING ORGANIC COMPOUNDS

Described herein is a process for providing a catalytically active fixed bed for hydrogenation of organic compounds, in which a fixed bed including monolithic shaped bodies as catalyst supports or consisting of monolithic shaped bodies is introduced into a reactor and the fixed bed is then contacted with at least one catalyst or a precursor thereof. The fixed beds laden with a catalyst that are obtained in this way are especially suitable for the hydrogenation of organic compounds in the presence of CO, wherein the conversion is at least 90%. They are notable in that only a very small proportion, if any, of the catalyst introduced is released into the reaction medium. 1. A process for providing a catalytically active fixed bed comprising monolithic shaped bodies as catalyst supports or consisting of monolithic shaped bodies laden with a catalyst comprising at least one metal selected from Ni , Fe , Co , Cu , Cr , Pt , Ag , Au , Pd , Mn , Re , Ru , Rh and Ir , in whicha) a fixed bed comprising monolithic shaped bodies or consisting of monolithic shaped bodies is introduced into a reactor,b) the fixed bed is contacted with a suspension of the at least one catalyst or the precursor thereof in a liquid medium, and the suspension of the at least one catalyst or the precursor thereof is at least partly conducted in a liquid circulation stream, the catalyst or the precursor comprising at least one metal selected from Ni, Fe, Co, Cu, Cr, Pt, Ag, Au, Pd, Mn, Re, Ru, Rh and Ir, to obtain a fixed bed laden with the catalyst or the precursor,c) the laden fixed bed obtained in step b) is optionally subjected to an activation,{'sub': 1', '4, 'd) the laden fixed bed obtained in step b) or the activated fixed bed obtained in step c) is optionally subjected to a treatment with a wash medium selected from water, C-C-alkanols, and mixtures thereof, and'}e) the fixed bed obtained after the activation in step c) or after the treatment in step d) is optionally contacted with a dopant ...

CATALYTIC TEST PAPER PREPARED BY COMPOSITING METAL PARTICLE-EMBEDDED BACTERIAL CELLULOSE WITH PLANT FIBERS, AND METHOD THEREFOR

Disclosed is a catalytic test paper prepared by compositing metal particle-embedded bacterial cellulose with plant fibers, and a preparation method therefor. Hydroxyl groups of bacterial cellulose are bonded with a nitrogen-containing or phosphorus-containing organic small molecule compound. By means of a chelation between a nitrogen or phosphorus atom with a metal, transition metal ions are adsorbed to a nanoporous surface of bacterial cellulose, and the transition metal ions are reduced in situ to obtain bacterial cellulose embedded with metal nanoparticles. The bacterial cellulose is composited with the plant fiber, and the catalytic test paper is prepared by a papermaking method. The catalytic test paper has the advantages of convenient use and recovery, high reusability, simple design, low manufacturing cost, higher catalytic efficiency, a green degradable support material, etc. 1. A method for preparing a catalytic test paper by compositing metal particle-embedded bacterial cellulose with plant fibers , characterized in that , the method comprises the following steps:(1) chemically bonding a nitrogen-containing or phosphorus-containing organic small molecule compound with hydroxyl groups in a structure of bacterial cellulose to obtain a functionalized bacterial cellulose having a nitrogen or phosphorus-containing group;(2) preparing an aqueous solution of an inorganic salt of a transition metal, adding the aqueous solution into the functionalized bacterial cellulose prepared in the step (1), stirring and reacting according to a solubility of the inorganic salt of the transition metal until the nitrogen-containing or phosphorus-containing group adsorbs transition metal ions onto a nanoporous surface of the bacterial cellulose till saturation, separating and washing with water;(3) reducing the transition metal ions adsorbed on the surface of the bacterial cellulose in the step (2) in situ to obtain bacterial cellulose embedded with transition metal nanoparticles ...

SURFACE-MODIFIED LIGHT UPCONVERSION SILICA PARTICLES

A composition, method, and article of manufacture are disclosed. The composition includes a silica particle with light upconversion molecules bound to its surface. The method includes obtaining silica particles and light upconversion molecules having sidechains with reactive functional groups. The method further includes binding the light upconversion molecules to surfaces of the silica particles. The article of manufacture includes the composition. 1. A composition , comprising:a silica particle; andlight upconversion molecules bound to a surface of the silica particle.2. The composition of claim 1 , wherein the light upconversion molecules comprise molecular sensitizers.3. The composition of claim 1 , wherein the light upconversion molecules comprise molecular annihilators.4. The composition of claim 1 , wherein the light upconversion molecules comprise molecular annihilators and molecular sensitizers.5. The composition of claim 1 , wherein the surface of the silica particle includes a first face and a second face.6. The composition of claim 5 , wherein the light upconversion molecules comprise molecular sensitizers bound to the first face of the silica particle.7. The composition of claim 6 , wherein the light upconversion molecules comprise molecular annihilators bound to the second face of the silica particle.8. A method of forming surface-modified particles claim 6 , comprising:obtaining silica particles;obtaining light upconversion molecules having sidechains with reactive functional groups; andbinding the light upconversion molecules to surfaces of the silica particles.9. The method of claim 8 , wherein the reactive functional groups are silyl groups.10. The method of claim 8 , further comprising forming a reaction environment claim 8 , the reaction environment comprising:the surface-modified particles;a photocatalyst; anda substrate.11. The method of claim 8 , wherein the silica particles are Janus particles.12. The method of claim 8 , wherein the light ...

COATINGS THAT REDUCE OR PREVENT BARNACLE ATTACHMENT TO A MARINE STRUCTURE

An apparatus includes a marine component or structure having a surface to be exposed to a marine environment during use. A photocatalyst coating is secured to the surface of the marine structure, wherein the photocatalyst coating includes titanium oxide. The marine component or structure is preferably selected from a boat hull, dock post, dock piling, pier, and buoy. A method may be provided for reducing or preventing barnacle attachment to a marine component or structure, including forming a transparent photocatalyst coating on an external surface of the marine structure, wherein the transparent photocatalyst coating includes a titanium oxide, and placing the marine component or structure in service within a marine environment. 1. An apparatus , comprising:a marine component or structure having a surface to be exposed to a marine environment during use of the marine component or structure; anda photocatalyst coating secured to the surface of the marine structure, wherein the photocatalyst coating includes titanium oxide.2. The apparatus of claim 1 , wherein the marine component or structure is selected from a boat hull claim 1 , dock post claim 1 , dock piling claim 1 , pier claim 1 , and buoy.3. The apparatus of claim 1 , wherein the photocatalyst coating further includes a fluorescent dye and/or ultra-fine glitter.4. The apparatus of claim 1 , wherein the titanium oxide includes anatase titanium oxide.5. The apparatus of claim 1 , wherein the photocatalyst coating includes a further photocatalytic oxide including indium tin oxide and/or aluminum zinc oxide.6. The apparatus of claim 1 , wherein the marine structure includes a material selected from wood claim 1 , fiberglass claim 1 , plastic claim 1 , metal claim 1 , and glass.7. The apparatus of claim 1 , wherein the photocatalyst coating is secured to a layer of paint that has been applied to the surface of the marine structure.8. The apparatus of claim 1 , further comprising:a transparent binder layer secured ...

CATALYTIC CONVERTERS HAVING NON-LINEAR FLOW CHANNELS

Disclosed is a honeycomb catalyst substrate core having geometrically non-linear flow channels. In an embodiment, the honeycomb catalyst substrate core includes helical flow channels. In another embodiment, the honeycomb catalyst substrate core includes sinusoidal flow channels. In yet another embodiment, the honeycomb catalyst substrate core includes helical plus sinusoidal flow channels. The honeycomb catalyst substrate core comprises a plurality of parallel non-linear flow channels formed along a longitudinal axis of symmetry of the catalyst substrate core, each non-linear flow channel configured such that eddies occurs during engine exhaust gas flow. Also disclosed is a method for manufacturing a ceramic honeycomb having non-linear flow channels, comprising the steps extrusion soft ceramic material through a die whilst the die moves through six degrees of freedom along its axis of symmetry. Disclosure includes a method for manufacturing a ceramic honeycomb having non-linear flow channels using three-dimensional printing. 1. A honeycomb catalyst substrate core , the honeycomb catalyst substrate core comprising:(a) a plurality of flow channels formed along a longitudinal axis of symmetry of a catalyst substrate core of a catalyst substrate, each flow channel configured into a sinusoidal substrate core adapted to increase heat-transfer and/or mass-transfer performance through formation of stable vortical structures, exclusively operative under strictly non-turbulent flow conditions, which create secondary flow, lateral to longitudinal channel flow, and enhance interactions with channel walls;(b) a washcoat within which a catalyst is embedded, said washcoat being applied over said catalyst substrate;(c) a mat cover that forms a skin over a honeycomb formed by said plurality of flow channels; and(d) a housing that forms a protective outer shell over said honeycomb, said housing having an inlet and an outlet on opposite ends of said honeycomb, said inlet and said ...

MULTIFUNCTIONAL CERIUM-BASED NANOMATERIALS AND METHODS FOR PRODUCING THE SAME

Embodiments relate to a cerium-containing nano-coating composition, the composition including an amorphous matrix including one or more of cerium oxide, cerium hydroxide, and cerium phosphate; and crystalline regions including one or more of crystalline cerium oxide, crystalline cerium hydroxide, and crystalline cerium phosphate. The diameter of each crystalline region is less than about 50 nanometers. 2. The method of claim 1 , further comprising preparing the substrate prior to immersion by one or more of grinding claim 1 , acid treatment claim 1 , and alkaline treatment.3. The method of claim 1 , wherein the substrate comprises one or more of aluminum or magnesium.4. The method of claim 3 , wherein the substrate comprises one of an AZ31 alloy claim 3 , an AZ61 alloy claim 3 , an AZ91 alloy claim 3 , an AM30 alloy claim 3 , an AM60 alloy claim 3 , an AA 7075-T6 alloy claim 3 , an AA 2024-T3 alloy claim 3 , and Al-clad alloys.5. The method of claim 1 , wherein the aqueous bath further comprises one or more of an accelerator and anti-bubbling agent.6. The method of claim 1 , wherein the diameter of each crystalline region of the phosphated nano-coating is less than 50 nanometers.7. The method of claim 2 , wherein preparing the substrate comprises surface grinding followed by acid treatment and then followed by alkaline immersion cleaning.8. The method of claim 2 , wherein preparing the substrate comprises acid treatment followed by alkaline immersion cleaning.9. The method of claim 2 , wherein acid treatment comprises treating using one or more of sulfuric acid claim 2 , nitric acid claim 2 , and hydrofluoric acid.10. The method of claim 1 , wherein the cerium-containing aqueous bath comprises about 0.1 wt. % to about 2.0 wt. % elemental cerium.11. The method of claim 1 , wherein the cerium-containing aqueous bath comprises one or more of CeCl3-7H2O and Ce(NO3)3-6H2O as cerium sources.12. the method of claim 1 , where the cerium-containing aqueous bath comprises one ...

Low-Temperature Diesel Oxidation Catalysts Using TiO2 Nanowire Arrays Integrated on a Monolithic Substrate

Metal oxide nanoarrays, such as titanium oxide nanoarrays, having a platinum group metal dispersed thereon and methods of making such nanoarrays are described. The platinum group metal can be dispersed on the metal oxide nanoarray as single atoms. The nanoarrays can be used to catalyze oxidation of combustion exhaust. 1. A method of making a metal oxide nanoarray having a platinum group metal dispersed thereon , the method comprising:contacting a metal oxide nanoarray with a solution comprising a platinum group metal precursor;drying the metal oxide nanoarray; andcalcining the metal oxide nanoarray.2. The method of claim 1 , wherein the platinum group metal precursor is a platinum precursor.3. The method of claim 2 , wherein the platinum precursor is Pt(NH)(NO).4. The method of claim 1 , where the solution comprising a platinum group metal precursor further comprises sodium ions.5. The method of claim 4 , wherein the sodium ions are from sodium hydroxide (NaOH).6. The method of claim 1 , wherein drying the metal oxide nanoarray comprises microwaving the metal oxide nanoarray.7. The method of claim 6 , wherein microwaving is performed at a frequency from about 915 MHz to about 7.0 GHz.8. The method of claim 1 , further comprising contacting the metal oxide nanoarray with a solution having a platinum precursor dissolved therein and drying the metal oxide nanorarray at least twice prior to calcining the metal oxide nanoarray.9. The method of claim 1 , wherein calcining is performed in air.10. The method of claim 1 , wherein calcining is performed at a temperature between about 450° C. and 550° C. for a duration from 3 hours to 4 hours.11. The method of claim 1 , wherein calcining is performed with a ramp rate of 2° C./min.12. The method of claim 1 , wherein calcining is performed at about 500° C. for about 4 hours with a ramp rate of about 2° C./min.13. The method of claim 1 , wherein the metal oxide is titanium dioxide.14. The method of claim 13 , further comprising ...

HIGHLY ACTIVE THERMALLY STABLE NANOPOROUS GOLD CATALYST

In one embodiment, a method includes depositing oxide nanoparticles on a nanoporous gold support to form an active structure and functionalizing the deposited oxide nanoparticles. In another embodiment, a system includes a nanoporous gold structure comprising a plurality of ligaments, and a plurality of oxide particles deposited on the nanoporous gold structure; the oxide particles are characterized by a crystalline phase. 1. A method , comprising:depositing oxide nanoparticles on a nanoporous gold support to form an active structure; andfunctionalizing the deposited oxide nanoparticles.2. The method as recited in claim 1 , the depositing comprising one or more of atomic layer deposition claim 1 , liquid phase deposition claim 1 , and wet chemical impregnation.3. The method as recited in claim 1 , the functionalizing comprising annealing the active structure at a predetermined temperature for a predetermined period of time.4. The method as recited in claim 3 , wherein the predetermined temperature is greater than 500 C claim 3 , wherein the predetermined period of time is greater than 20 min.5. The method as recited in claim 1 , further comprising etching a gold alloy to form the nanoporous gold support claim 1 , the nanoporous gold support comprising at least 99% at % gold and having a porosity of at least 50%.6. The method as recited in claim 5 , wherein the etching comprises: submersing the gold alloy in concentrated nitric acid for at least 24 hours.7. The method as recited in claim 6 , further comprising applying an electric potential to the gold alloy during the etching.8. A system claim 6 , comprisinga nanoporous gold structure comprising a plurality of ligaments; anda plurality of oxide particles deposited on the nanoporous gold structure, wherein the oxide particles are characterized by a crystalline phase.9. The system as recited in claim 8 , wherein gold in the ligaments is resistant to sintering at temperatures up to about 600 C.10. The system as recited ...

METHOD OF MANUFACTURING A CATALYST COMPRISING GOLD NANOPARTICLES, THE CATALYST AND ITS USE

A method for the manufacture of a catalyst comprising substrate particles having gold nanoparticles thereon, the method comprising providing a first solution comprising gold nanoparticles; providing a second solution comprising substrate particles having polyelectrolyte on the surface thereof; and combining the solutions to form substrate particles having gold nanoparticles thereon. A catalyst comprising substrate particles having gold nanoparticles thereon, wherein the gold nanoparticles comprise capping agent comprising polyelectrolyte. A catalyst as a component of a cigarette filter, an air conditioning unit, an exhaust, or a diesel exhaust. 1. A method for the manufacture of a catalyst comprising substrate particles having gold nanoparticles thereon , the method comprising:providing a first solution comprising gold nanoparticles;providing a second solution comprising substrate particles having polyelectrolyte on the surface thereof;combining the solutions to form substrate particles having gold nanoparticles thereon.2. The method of further comprising agitating the combined solutions.3. The method of wherein the gold nanoparticles comprise a capping agent.4. The method of wherein the substrate particles comprise one or more of carbon nanotubes claim 1 , active carbon claim 1 , graphene and inorganic oxides selected from the group consisting of one or more of CeO claim 1 , TiO claim 1 , FeOand SiO.5. The method of wherein the polyelectrolyte on the surface of the substrate particles comprises polyallylamine.6. The method of further comprising recovering the substrate particles having gold nanoparticles thereon.7. The method of further comprising calcination of the substrate particles having gold nanoparticles thereon.8. A catalyst obtainable by the method of .9. A catalyst comprising substrate particles having gold nanoparticles thereon claim 1 , wherein the gold nanoparticles comprise capping agent comprising polyelectrolyte.10. The catalyst of wherein the ...

Materials and methods for immobilization of catalysts on surfaces and for selective electroless metallization

A method of rendering a substrate catalytic to electroless metal deposition comprising the steps of: (a) depositing a ligating chemical agent on the substrate, which is capable of both binding to the substrate and ligating to an electroless plating catalyst; and (b) ligating the electroless plating catalyst to the ligating chemical agent, wherein the ligating chemical agent has the chemical structure: wherein n and m are each between about 1 and about 100.

Aerosol processing method for controlled coating of surface species to generate catalysts

A method of producing a catalyst comprises generating an aerosolized flow of catalyst support particles, heating a catalytically active compound precursor to produce a catalytically active compound precursor vapor, contacting the aerosolized flow of catalyst support particles with the catalytically active compound precursor vapor, and condensing the catalytically active compound precursor onto the catalyst support particles to produce the catalyst comprising catalytically active compound deposited on surfaces of the catalyst support particles. The method may further comprise aerosolizing a catalyst support precursor mixture, drying the aerosolized catalyst support precursor mixture in a first heating zone to form an aerosolized flow of catalyst support particles, and contacting the catalyst support particles with a catalytically active compound precursor vapor in a second heating zone to form the catalyst comprising the layer of the catalytically active compound deposited on surfaces of the catalyst of catalyst support particles. 1. A method of producing a catalyst , the method comprising:generating an aerosolized flow of catalyst support particles;heating a catalytically active compound precursor to produce a catalytically active compound precursor vapor;contacting the aerosolized flow of catalyst support particles with the catalytically active compound precursor vapor; andcondensing the catalytically active compound precursor to produce the catalyst comprising a catalytically active compound deposited on surfaces of the catalyst support particles.2. The method of where the catalyst support particles comprise at least one of silica claim 1 , alumina claim 1 , or silica-alumina.3. The method of where the catalytically active compound precursor comprises at least one of tungsten claim 1 , platinum claim 1 , gold claim 1 , palladium claim 1 , rhodium claim 1 , iridium claim 1 , chromium claim 1 , rhenium claim 1 , molybdenum claim 1 , manganese claim 1 , titanium ...

ZEOLITE COATING PREPARATION ASSEMBLY AND OPERATION METHOD

The present invention relates to a zeolite coating preparation assembly and operation method wherein zeolite adsorbents are coated by crystallization process on various surfaces heated by induction. The objective of the present invention is to provide a zeolite coating preparation assembly and operation method; by which time saving is achieved owing to heating by induction, material saving is achieved owing to heating by induction, material saving is achieved since large heating resistances and complicated reactors are not used; and which is thus more economical; and wherein thicker and more stable coatings with high diffusion coefficients are prepared by using a more practical reaction system in a shorter period of time in comparison to the known methods, and wherein mass production is enabled. 1. A zeolite coating preparation method for performing in the assembly , comprising the steps of:preparing a reactor, which is made of a material with low electrical conductivity;preparing a synthesis solution as diluted and filling it into the reactor;cleaning an electrically conductive substrate and placing it in the synthesis solution filled into the reactor;placing the reactor near a coil of an induction device;adjusting the distance between the coil and the reactor and/or the power of the induction device so as to provide the desired substrate temperature;circulating the synthesis solution that is in the reactor by the help of a pump via a connection line lying between a feeding tank which is immersed in a water bath, and the reactor;adjusting the water bath temperature with the help of a heat exchanger in order to keep the temperature of the synthesis solution in the feeding tank at a value to assure that the temperature of the synthesis solution in the reactor remains at a desired value that is lower than the temperature of the substrate;producing magnetic field by operating the induction device;performing the synthesis at the desired substrate and solution ...

THREE-WAY CATALYST AND ITS USE IN EXHAUST SYSTEMS

A three-way catalyst is disclosed. The three-way catalyst comprises a silver-containing extruded zeolite substrate and a catalyst layer disposed on the silver-containing extruded zeolite substrate. The catalyst layer comprises a supported platinum group metal catalyst comprising one or more platinum group metals and one or more inorganic oxide carriers. The invention also includes an exhaust system comprising the three-way catalyst. The three-way catalyst results in improved hydrocarbon storage and conversion, in particular during the cold start period. 1. A three-way catalyst comprising: (1) a silver-containing extruded zeolite substrate; and (2) a catalyst layer disposed on the silver-containing extruded zeolite substrate , wherein the catalyst layer comprises a supported platinum group metal catalyst comprising one or more platinum group metals and one or more inorganic oxide carriers.2. The three-way catalyst of wherein the zeolite is selected from the group consisting of a beta zeolite claim 1 , a faujasite claim 1 , an L-zeolite claim 1 , a ZSM zeolite claim 1 , an SSZ-zeolite claim 1 , an AEI framework zeolite claim 1 , a mordenite claim 1 , a chabazite claim 1 , an offretite claim 1 , an erionite claim 1 , a clinoptilolite claim 1 , a silicalite claim 1 , an aluminum phosphate zeolite claim 1 , a mesoporous zeolite claim 1 , a metal-incorporated zeolite claim 1 , and mixtures thereof.3. The three-way catalyst of wherein the zeolite is selected from the group consisting of beta zeolite claim 1 , ZSM-5 claim 1 , SSZ-33 claim 1 , Y-zeolite claim 1 , and mixtures thereof.4. The three-way catalyst of wherein the one or more platinum group metals is selected from the group consisting of platinum claim 1 , palladium claim 1 , rhodium claim 1 , and mixtures thereof.5. The three-way catalyst of wherein the one or more platinum group metals is palladium and rhodium.6. The three-way catalyst of wherein the one or more inorganic oxide carriers is selected from the group ...

Exhaust gas purifying catalyst and production process thereof

Disclosed is an exhaust gas purifying catalyst in which grain growth of a noble metal particle supported on a support is suppressed. Also disclosed is a production process for producing an exhaust gas purifying catalyst. The exhaust gas purifying catalyst comprises a crystalline metal oxide support and a noble metal particle supported on the support, wherein the noble metal particle is epitaxially grown on the support, and wherein the noble metal particle is dispersed and supported on the outer and inner surfaces of the support. The process for producing an exhaust gas purifying catalyst comprises masking, in a solution, at least a part of the surface of a crystalline metal oxide support by a masking agent, introducing the support into a noble metal-containing solution containing a noble metal, and drying and firing the support and the noble metal-containing solution to support the noble metal on the support.

In-situ Trim Coke Selectivation of Toluene Disproportionation Catalyst

The invention relates to treating a molecular sieve prepared by at least one in situ selectivation sequence wherein graphitic coke is adhered to said molecular sieve, which is useful in a toluene disproportionation process. 1. A method for modifying a molecular sieve comprising:treating a molecular sieve prepared by at least one ex situ silicon selectivation sequence to at least one in situ trim coke selectivation sequence to provide a modified silicon selectivated molecular sieve, wherein graphitic coke is adhered to said molecular sieve by said in situ trim coke selectivation sequence.2. The method of claim 1 , wherein said ex situ silicon selectivation sequence comprises:contacting said molecular sieve with a silicon-containing selectivating agent comprising silicones or silicone polymers, to provide a silicon-treated molecular sieve;calcining said silicon-treated molecular sieve to provide a calcined silicon selectivated molecular sieve;optionally steam treating said calcined silicon selectivated molecular sieve.3. The method of claim 1 , wherein said molecular sieve has been modified by between two and six ex situ silicon selectivation sequences and including at least one steam-treating.4. The method of claim 1 , wherein said molecular sieve has been modified by two ex situ silicon selectivation sequences.5. The method of any one of the preceding claims claim 1 , wherein said molecular sieve has been modified by three ex situ silicon selectivation sequences.6. The method of claim 1 , wherein the in situ trim coke selectivation conditions comprise a reactor temperature of about 260-593° C. claim 1 , for about 0.1 hour to about 3 weeks claim 1 , operating at a WHSV of about 0.1-20 hr claim 1 , and a hydrogen partial pressure of about 0.0689-2.07 Mpa-a claim 1 , with a reactor pressure of about 1.72-2.41 Mpa-g.7. The method of claim 6 , wherein the in situ trim coke selectivation conditions comprise a reactor temperature of about 454-510° C. claim 6 , operating at ...

HOMOGENEOUS CATALYTIC FIBER COATINGS AND METHODS OF PREPARING SAME

Methods of providing a homogeneous or uniform catalytic coating on an inorganic fiber substrate include using a vacuum to coat the substrate, improved coating solutions or mixtures and/or drying methods to prevent migration of metal catalyst precursors to the exterior surfaces and edges of the inorganic fiber substrate. The methods may include adding a component to the first coating solution or mixture before coating the inorganic fiber substrate; applying a second coating solution or mixture to the coated inorganic fiber substrate; drying the coated inorganic fiber substrate at ambient conditions, under controlled conditions, or with microwave radiation; or optimizing an amount of a salt, water, or an organic solvent in the coating solution. 1. A method for preparing a catalytically active fiber composition comprising:{'claim-text': ['a salt or a colloid of a catalytically active metal, and', 'water, an organic solvent, or a combination thereof,'], '#text': 'preparing a first coating solution or mixture comprising:'}coating an inorganic fiber substrate with the first coating solution or mixture;{'claim-text': ['adding a component to the first coating solution or mixture before coating the inorganic fiber substrate,', 'applying a second coating solution or mixture to the coated inorganic fiber substrate, or', 'pre-treating the inorganic fiber substrate before coating the inorganic fiber substrate;'], '#text': 'reducing migration of the catalytically active metal on the inorganic fiber substrate by:'}drying the coated inorganic fiber substrate; andcalcining the dried, coated inorganic fiber substrate.2. The method of claim 1 , wherein reducing migration of the catalytically active metal comprises adding a component to the first solution or mixture claim 1 , and the component comprises a viscosifier claim 1 , a binder claim 1 , ammonium chloride claim 1 , or citric acid.3. The method of claim 2 , wherein the component comprises a viscosifier claim 2 , and the ...

Photocatalytic coating, process for producing photocatalytic coating, and process for producing photocatalytic body

This photocatalytic coating contains at least a photocatalytic particle, a binder and water. The binder includes a water-soluble hydrolysate of a silane coupling agent having an ethylene oxide structure. A content of the water-soluble hydrolysate of the silane coupling agent having the ethylene oxide structure is preferably 0.5% by weight or more and 20% by weight or less, based on a weight of a total solid content contained in the photocatalytic coating.

Thermally Stable Monolith Catalysts for Methane Reforming and Preparing Method of the Same

The present invention relates to a monolith catalyst for carbon-dioxide/methane reforming and a method of manufacturing the same, and more particularly to a novel monolith catalyst for a reforming reaction having improved thermal durability, configured such that a sintering inhibiting layer is formed by coating the surface of a monolith support with at least one element selected from the group consisting of Group 2, 3, 6, 13, 15 and 16 elements among elements in Period 3 or higher and an active catalyst layer is formed on the sintering inhibiting layer, thereby preventing carbon deposition and catalyst deactivation due to deterioration even upon reaction at high temperatures.

Fabricating Porous Metallic Coatings Via Electrodeposition and Compositions Thereof

A method is provided for creating a porous coating on a surface of a substrate by electrodeposition. The substrate is a part of the cathode. An anode is also provided. A coating is deposited or disposed on the surface by applying a voltage that creates a plurality of porous structures on the surface to be coated. Continuing to apply a voltage creates additional porosity and causes portions of the attached porous structures to detach. A covering layer is created by applying a voltage that creates a thin layer that covers the attached porous structures and the detached portions which binds the porous structures and detached portions together. 1. An article , comprising: a surface having at least one region; and a porous coating on said at least one region of said surface , wherein the coating comprises a plurality of porous structures attached to said at least one region of said surface and at least one layer covering said porous structures.2. The article of wherein between said coating and said surface claim 1 , additionally applying one or more intermediate bonding layers between said coating and said surface.3. The article of wherein said coating and said surface are different materials claim 2 , and said one or more bonding layers are made of materials different from the materials of said coating and said surface.4. The article of claim 1 , wherein said coating is applied to said surface by electrodeposition5. The article of wherein said porous structures and said covering layer are separately selected from metals claim 1 , metal alloys claim 1 , metallic compounds claim 1 , conductive polymers or any combination thereof.6. The article of wherein said surface is a metal claim 1 , metal alloy claim 1 , metallic compound claim 1 , conductive polymer or any combination thereof.7. The article of wherein said coating and said surface are the same material.8. The article of wherein said coating and said surface are different materials.9. The article of wherein said ...

Three-way catalyst

The present invention relates to a catalyst comprising a carrier substrate of the length L extending between substrate ends a and b and three washcoat zones A, B and C wherein washcoat zone A comprises one or more first platinum group metals and extends starting from substrate end a over a part of the length L, washcoat zone C comprises one or more first platinum group metals and extends starting from substrate end b over a part of the length L, and washcoat zone B comprises the same components as washcoat zone A and in addition, one or more second platinum group metals and extends between washcoat zones A and C, wherein L=L A +L B +L C , wherein L A is the length of washcoat zone A, L B is the length of substrate length B and L C is the length of substrate length C.

PHOTOCATALYTIC ASSEMBLY AND ITS PREPARATION METHOD

A photocatalytic assembly () includes a substrate () and a photocatalytic unit () laminated on the substrate (). The photocatalytic unit () includes a laminated titanium dioxide layer () and a metal layer (). The titanium dioxide layer () has a thickness of 10 nm to 100 nm. The metal layer () is formed by stacking metal nanoparticles. The metal nanoparticle is made of at least one selected from the group consisting of rhodium, palladium, platinum, gold, silver, and aluminum. 1. A photocatalytic assembly , comprising a substrate , a titanium dioxide layer and a metal layer that are laminated on the substrate; wherein the titanium dioxide layer has a thickness of 10 nm to 100 nm , the metal layer is formed by stacking metal nanoparticles , the metal nanoparticle is made of at least one selected from the group consisting of rhodium , palladium , platinum , gold , silver , and aluminum.2. The photocatalytic assembly according to claim 1 , wherein the metal nanoparticle has a particle size less than or equal to 150 nm.3. The photocatalytic assembly according to claim 2 , wherein the metal nanoparticle has the particle size of 5 nm to 50 nm.4. The photocatalytic assembly according to claim 1 , wherein the metal nanoparticle has a spherical structure or a rod-like structure.5. The photocatalytic assembly according to claim 1 , wherein the metal layer is laminated on the substrate claim 1 , and the titanium dioxide layer is laminated on the metal layer.6. The photocatalytic assembly according to claim 1 , wherein the titanium dioxide layer is laminated on the substrate claim 1 , and the metal layer is laminated on the titanium dioxide layer.7. The photocatalytic assembly according to claim 1 , wherein the number of the metal layers is two claim 1 , two metal layers are located on both opposite surfaces of the titanium dioxide layer claim 1 , respectively; one of the metal layers is laminated on the substrate.8. A method of preparing a photocatalytic assembly claim 1 , ...

Methods of Preparing a Catalyst with Low HRVOC Emissions

A method of preparing a catalyst comprising a) drying a chrominated-silica support followed by contacting with a titanium(IV) alkoxide to form a metalized support, b) drying a metalized support followed by contacting with an aqueous alkaline solution comprising from about 3 wt. % to about 20 wt. % of a nitrogen-containing compound to form a hydrolyzed metalized support, and c) drying the hydrolyzed metalized support followed by calcination at a temperature in a range of from about 400° C. to about 1000° C. and maintaining the temperature in the range of from about 400° C. to about 1000° C. for a time period of from about 1 minute to about 24 hours to form the catalyst.

Titanium Dioxide Layer With Improved Surface Properties

In a thermocatalytically active titanium dioxide coating, based on a sol-gel system, the titanium dioxide coating contains a structuring component and/or is produced by a structuring method. 120-. (canceled)21. A method of forming a thermocatalytically active coating , based on a sol-gel system , the method comprising:providing a substrate;prestructuring the substrate by performing at least one of a stamping process, a rolling process, a wet-chemical process, or a plasma etching process to the substrate;forming a titanium dioxide coating by a process including adding metal oxide structuring particles to a volume of titanium dioxide, wherein the metal oxide structuring particles are selected from the group of metal oxides consisting of SiO2, Al2O3, ZrO2, TiO2 boehmite (α-AlO(OH)), CeO2, Fe2O3, MnO, and Mn3O4; andsubsequent to the prestructuring of the substrate, applying the titanium dioxide coating, including the added metal oxide structuring particles, to the prestructured substrate;wherein the molar ratio of metal oxide particles to titanium dioxide in the titanium dioxide coating is ≧1:1 and ≦1000:1.22. (canceled)23. The method of claim 21 , wherein the prestructured substrate has a roughness in a range from ≧50 nm to ≦100 μm.24. The method of claim 21 , wherein the metal oxide structuring particles have an average particle size ranging from ≧50 nm to ≦50 μm.25. The method of claim 21 , wherein the metal oxide structuring particles have an average particle size ranging from ≧100 nm to ≦10 μm.26. The method of claim 21 , wherein the metal oxide structuring particles further comprise a metal oxide selected from the group of oxides consisting of SiO2 claim 21 , Fe2O3 claim 21 , and mixtures thereof.27. The method of claim 21 , wherein the metal oxide structuring particles further comprise SiO2.28. The method of claim 21 , comprising:producing the thermocatalytically active coating using a sol-gel method;applying the thermocatalytically active coating using a wet- ...

Exhaust gas purification catalyst

When the amount of coating is increased in a two-layer catalyst or the like containing two noble metals in respective different layers, gas diffusivity in the catalyst and use efficiency of a catalytic active site are reduced to thereby reduce purification performance. In view of this, an organic fiber having a predetermined shape is used as a pore-forming material in formation of an uppermost catalyst coating layer of a multi-layer catalyst, to thereby form an uppermost catalyst coating layer having a high-aspect-ratio pore excellent in connectivity and therefore excellent gas diffusivity.

PREPARATION METHOD FOR WIDE-TEMPERATURE CATALYST USED FOR PREFERENTIAL OXIDATION OF CO IN A HYDROGEN-RICH ATMOSPHERE, AND PRODUCT AND APPLICATIONS

This invention provides a preparation method of a catalyst for preferential oxidization of CO in a hydrogen-enriched atmosphere, and a catalyst product obtained from the method and its applications thereof. Particularly, in this invention, a wide-temperature catalyst for preferential oxidization of CO in a hydrogen-enriched atmosphere is obtained by depositing one or more of an iron oxide, cobalt oxide, and nickel oxide as a promoter onto the surface of a supported Pt-group noble metal catalyst precursor via chemical vapor deposition or atomic layer deposition. In the wide-temperature catalyst, the active noble metal component has a content of 0.1 to 10 wt %, and the promoter has a content of 0.1 to 10 wt % in terms of the metal element thereof. In the reaction of preferential oxidation of CO in a hydrogen-enriched atmosphere, the catalyst prepared by this invention can exhibit excellent catalytic performance and can achieve high conversion of CO with high selectivity in a wide temperature range of −80 to 200° C., for example. Also, the catalyst can remain stable for a long time even in a case where steam and COare present in the hydrogen-enriched atmosphere. 1. A method of preparing a wide-temperature catalyst for preferential oxidization of CO in a hydrogen-enriched atmosphere , the catalyst comprises a carrier , an active component , and a promoter , wherein the carrier is one or more selected from SiO , AlO , TiO , MgO , CeO , ZrO , activated carbon , carbon black , graphene , and carbon nanotubes; the active component is one or more selected from Pt , Ir , Ru , Rh , and Pd with a content of 0.1 to 10 wt % in the wide-temperature catalyst; and the promoter is one or more selected from iron oxide , cobalt oxide , and nickel oxide with a content of 0.01 to 15 wt % in the wide-temperature catalyst , in terms of the metal element thereof ,the method comprises:providing a supported catalyst precursor comprising the active component and the carrier; anddepositing the ...

CROSS-LINKED POLYSTYRENE CATALYST, METHOD OF MAKING, AND USES THEREOF

In an embodiment, a catalyst comprises a porous carrier having 5 to 200 pores per 2.54 centimeters and a pore volume of at least 90 vol % based on the total volume of the porous carrier; wherein the porous carrier comprises one or both of carbon and a metal; and a sulfonated, cross-linked polystyrene located on at least part of a surface of the porous carrier. 1. A catalyst comprising:a porous carrier having 5 to 200 pores per 2.54 centimeters and a pore volume of at least 90 vol % based on the total volume of the porous carrier; wherein the porous carrier comprises one or both of carbon and a metal; anda sulfonated, cross-linked polystyrene located on at least part of a surface of the porous carrier.2. The catalyst of claim 1 , wherein the sulfonated claim 1 , cross-linked polystyrene is grafted onto a thermoplastic layer located on the surface of the porous carrier.3. The catalyst of claim 1 , wherein the sulfonated claim 1 , cross-linked polystyrene comprises 0.5 to 20 mol % of a repeat unit derived from a cross-linker relative to a total amount of repeat units.4. The catalyst of claim 1 , wherein the catalyst has an initial acid content of 0.01 to 0.2 milli-equivalents of acid groups per cmof the catalyst.5. The catalyst of claim 4 , wherein claim 4 , when introduced to a solution comprising phenol claim 4 , acetone claim 4 , or a combination thereof at a temperature of 75° C. for 24 hours claim 4 , the sulfonated claim 4 , cross-linked polystyrene retains at least 75 wt % of the initial acid content.6. A method of making the catalyst of claim 1 , comprising:polymerizing a polymerization mixture comprising a styrene monomer and a cross-linker in the presence of the porous carrier to form a polystyrene coated porous carrier having a cross-linked polystyrene located on the at least part of the surface of the porous carrier;separating the polystyrene coated porous carrier from the polymerization mixture;further polymerizing the cross-linked polystyrene after the ...

METHOD FOR ACTIVATING HYDROTREATING CATALYSTS

The present invention relates to the use, in a method for in-situ activation of at least one hydrotreating, in particular hydrocracking, catalyst, of at least one nitrogen compound having at least one of the following characteristics: 1. A method for in-situ activation of a hydrotreating catalyst , comprising using at least one nitrogen compound having at least two of the following characteristics:a) a nitrogen content by weight in the range from 15 to 35 wt % relative to the total weight of the nitrogen compound;b) a number of nitrogen atoms in the range from 2 to 20 per molecule;c) a boiling point in the range from 140° C. to 300° C.; andd) said nitrogen compound being in liquid form at room temperature and atmospheric pressure.2. The method according to claim 1 , wherein the nitrogen compound has in addition a molecular weight in the range from 80 g.molto 300 g.moldesignated as characteristic e) hereinafter.3. The method according to claim 1 , wherein the nitrogen compound has a characteristic f) such that said nitrogen compound does not comprise an aromatic or cyclic group.4. The method according to claim 1 , in wherein said at least one nitrogen compound necessarily has characteristic b).5. The method according to claim 1 , in wherein the nitrogen compound is selected from the group consisting of N claim 1 ,N′-diethyl-1 claim 1 ,3-propanediamine (DEAPA) claim 1 , tetramethyl-1 claim 1 ,3-propanediamine (TMPDA) claim 1 , N-methyl-1 claim 1 ,3-propanediamine claim 1 , N claim 1 ,N′-dibutyl-1 claim 1 ,3-propanediamine claim 1 , N-(3-dimethylaminopropyl)propane-1 claim 1 ,3-diamine (DMAPAPA) claim 1 , N-(3-aminopropyl)-1 claim 1 ,3-propanediamine claim 1 , N claim 1 ,N′-1 claim 1 ,2-ethanediyl-bis-1 claim 1 ,3-propanediamine claim 1 , N-(aminopropyl)diethanolamine (APDEA) claim 1 , and mixtures thereof.6. The method of claim 1 , wherein the activity of at least one hydrotreating catalyst is controlled.7. The method of claim 1 , wherein the acid sites of the ...

STRUCTURED CATALYSTS FOR PRE-REFORMING HYDROCARBONS

Provided herein are structured catalysts, methods of making structured catalysts, and methods of using structured catalysts for pre-reforming of hydrocarbons. The structured catalysts contain a structured catalyst substrate, a first coating containing cerium-gadolinium oxide; and a second coating containing nickel and cerium-gadolinium oxide. 1. A process for pre-reforming a hydrocarbon fuel , comprising:feeding to a catalytic pre-reformer air, steam, and a hydrocarbon fuel including C2 and greater hydrocarbons; andpre-reforming, in the catalytic pre-reformer, the hydrocarbon fuel to produce a reformate exit stream including hydrogen and methane,wherein the catalytic pre-reformer includes a structured catalyst having a structured catalyst substrate, a first coating containing cerium-gadolinium oxide; and a second coating containing nickel and cerium-gadolinium oxide;and wherein the structured catalyst substrate comprises a monolithic structured catalyst substrate.2. The process of claim 1 , wherein the hydrocarbon fuel is selected from the group consisting of natural gas claim 1 , propane claim 1 , gasoline claim 1 , jet fuel claim 1 , biofuel claim 1 , diesel claim 1 , and kerosene.3. The process of claim 1 , wherein the second coating further comprises ruthenium.4. The process of claim 1 , wherein the structured catalyst comprises two or more layers of the second coating. This application is a divisional application of and claims priority from U.S. Nonprovisional application Ser. No. 15/408,892, titled Structured catalysts for pre-reforming hydrocarbons, which was filed on Jan. 18, 2017 and is incorporated by reference in its entirety for purposes of United States patent practice.The disclosure relates to structured catalysts for pre-reforming of hydrocarbons. More particularly, the disclosure relates to structured catalysts, methods of making structured catalysts, and methods of using structured catalysts for pre-reforming of hydrocarbons.Catalysts for chemical ...

FILTER ELEMENT FOR DECOMPOSING CONTAMINANTS, SYSTEM FOR DECOMPOSING CONTAMINANTS AND METHOD USING THE SYSTEM

Embodiments of the present invention include a filter element for decomposing contaminants including a substrate, and a photocatalytic composition comprising at least a photocatalyst and a co-catalyst. The embodiments of the present invention also includes a system for decomposing contaminants including a substrate, and a photocatalytic composition comprising at least a photocatalyst and a co-catalyst; and a method using the system. 1. A filter element for decomposing contaminants comprising:a substrate; anda photocatalytic composition comprising at least a photocatalyst and a co-catalyst;{'sub': 3', '2', '3', '2, 'wherein the photocatalyst contains WOand the co-catalyst contains CeO, and wherein the molar ratio of WOto CeOis 1:5 to 5:1.'}2. The filter element as claimed in claim 1 , wherein the substrate is a gas permeable support.3. The filter element as claimed in claim 1 , wherein the photocatalyst shows visible light responsiveness.4. The filter element as claimed in claim 1 , wherein said photocatalyst further comprises TiOor Ti(O claim 1 ,C claim 1 ,N):Sn.5. The filter element as claimed in claim 1 , wherein said co-catalyst further comprises anatase TiO claim 1 , SrTiO claim 1 , KTaO claim 1 , or KNbO.6. The filter element as claimed in claim 1 , wherein said co-catalyst further comprises InO claim 1 , TaO claim 1 , anatase TiO claim 1 , rutile TiO claim 1 , or a combination of anatase and rutile TiO.7. The filter element as claimed in claim 1 , which further comprises a fluororesin porous layer laminated on at least one surface of the substrate claim 1 , wherein the photocatalytic composition is disposed on the fluororesin porous layer.8. The filter element as claimed in claim 7 , wherein a fluororesin constituting the fluororesin porous layer contains polytetrafluoroethylene.9. The filter element as claimed in claim 7 , wherein the photocatalytic composition is formed on the fluororesin porous layer through an aerosol deposition method.10. The filter ...

Supported noble metal-comprising catalyst for oxidative dehydrogenation or epoxidation

Supported noble metal-comprising catalysts which can be obtained by a1) application of a noble metal compound, optionally in admixture with additives acting as promoters, to a support material, then drying, and a2) application of a reducing agent to a support material, then drying, wherein steps a1) and a2) are repeated simultaneously or in alternating turns, or wherein either of the compounds is applied entirely and then the other one is applied entirely, b) optionally afterwards drying of the resulting product, and c) subsequent calcination, its use, especially for oxidative dehydrogenation and a process for producing it.

CATALYST COMPOSITE AND USE THEREOF IN THE SELECTIVE CATALYTIC REDUCTION OF NOx

The present invention relates to a process for the preparation of a catalyst for selective catalytic reduction comprising• (i) preparing a mixture comprising a metal-organic framework material comprising an ion of a metal or metalloid selected from groups 2-5, groups 7-9, and groups 11-14 of the Periodic Table of the Elements, and at least one at least monodentate organic compound, a zeolitic material containing a metal as a non-framework element, optionally a solvent system, and optionally a pasting agent,• (ii) calcining of the mixture obtained in (i); and further relates to a catalyst per se comprising a composite material containing an amorphous mesoporous metal and/or metalloid oxide and a zeolitic material, wherein the zeolitic material contains a metal as non-framework element, as well as to the use of said catalyst.

PHOTOCATALYST SHEET

There is provided a photocatalyst sheet comprising a base material and a photocatalyst layer containing at least a photocatalyst, wherein the photocatalyst layer is firmly adhered to the base material. In an embodiment, there is provided a photocatalyst sheet comprising a base material; and a photocatalyst layer that contains at least a photocatalyst, and is formed on at least one surface of the base material through an aerosol deposition method. This photocatalyst sheet has an excellent photocatalytic activity and an excellent adhesion. 1. A photocatalyst sheet comprising a base material and a photocatalyst layer containing at least a photocatalyst , wherein the photocatalyst layer is firmly adhered to the base material.2. A photocatalyst sheet comprising: a base material; and a photocatalyst layer that contains at least a photocatalyst , and is formed on at least one surface of the base material through an aerosol deposition method.3. The photocatalyst sheet according to claim 2 , wherein the base material is a porous film.4. The photocatalyst sheet according to claim 2 , wherein the base material is formed of a resin.5. The photocatalyst sheet according to claim 4 , wherein the resin includes thermosetting resin claim 4 , a thermoplastic resin claim 4 , an ultraviolet curable resin claim 4 , or an electron beam curable resin.6. The photocatalyst sheet according to claim 2 , wherein the photocatalyst shows a visible-light responsiveness.7. The photocatalyst sheet according to claim 2 , wherein the photocatalyst layer further contains a co-catalyst.8. The photocatalyst sheet according to claim 7 , wherein the photocatalyst contains titanium(IV) oxide or tin(IV) oxide claim 7 , and the co-catalyst contains copper(I) oxide or copper(II) oxide claim 7 , and wherein the co-catalyst is supported on the photocatalyst.9. The photocatalyst sheet according to claim 7 , wherein the photocatalyst contains tungsten(VI) oxide claim 7 , and the co-catalyst contains cerium(IV) ...

POROUS COMPOSITE

A porous composite includes a porous base material, and a porous collection layer provided on a collection surface of the base material (e.g., on inner surfaces of first cells). The collection layer contains catalyst particles of rare-earth oxide or transition-metal oxide situated in pores of the collection surface of the base material. The collection surface has a covered region that is covered with the collection layer and whose total area is 60% or less of the total area of the collection surface. 1. A porous composite comprising:a porous base material; anda porous collection layer provided on a collection surface of said base material,wherein said collection layer contains catalyst particles of rare-earth oxide or transition-metal oxide situated in pores of said collection surface of said base material, andsaid collection surface has a covered region that is covered with said collection layer and whose total area is 60% or less of a total area of said collection surface.2. The porous composite according to claim 1 , wherein{'sub': '2', 'said catalyst particles are made of CeO, lanthanum-manganese-cerium oxide, or lanthanum-praseodymium-cerium oxide.'}3. The porous composite according to claim 1 , whereinsaid catalyst particles have a maximum particle size less than or equal to 10 μm, andsaid catalyst particles have a median diameter less than 1.0 μm.4. The porous composite according to claim 1 , whereina total area of said covered region situated in a region other than the pores of said collection surface is 30% or less of the total area of said collection surface.5. The porous composite according to claim 1 , whereinsaid collection layer in the pores of said collection surface of said base material has a porosity higher than or equal to 20% and lower than or equal to 80%.6. The porous composite according to claim 1 , whereinsaid base material has a honeycomb structure whose interior is partitioned into a plurality of cells by a partition wall, andat least some ...

CATALYST STRUCTURE, USE THEREOF AND ELECTROCHEMICAL DEVICE

A catalyst structure is provided. The catalyst structure includes a porous carrier and a plurality of layered hydroxides. The porous carrier includes a nitrogen-doped carbon framework, a plurality of metal oxide particles and a plurality of carbon nanotubes. The nitrogen-doped carbon framework has a plurality of pores. The metal oxide particles are uniformly dispersed in the pores of the nitrogen-doped carbon framework. The carbon nanotubes are located on a surface of the nitrogen-doped carbon framework, and one end of each of the carbon nanotubes is connected to the surface of the nitrogen-doped carbon framework. The layered hydroxides are coated on the surface of the nitrogen-doped carbon framework. 1. A catalyst structure , comprising: a nitrogen-doped carbon framework having a plurality of pores;', 'a plurality of metal oxide particles, wherein the metal oxide particles are uniformly dispersed in the pores of the nitrogen-doped carbon framework; and', 'a plurality of carbon nanotubes, wherein the carbon nanotubes are located on a surface of the nitrogen-doped carbon framework, and one end of each of the carbon nanotubes is connected to the surface of the nitrogen-doped carbon framework; and, 'a porous carrier, comprisinga plurality of layered hydroxides, wherein the layered hydroxides are coated on the surface of the nitrogen-doped carbon framework.2. The catalyst structure of claim 1 , wherein a size of the nitrogen-doped carbon framework is 100 nm to 5 μm.3. The catalyst structure of claim 1 , wherein the metal oxide particles are cobalt tetroxide.4. The catalyst structure of claim 1 , wherein a length of each of the carbon nanotubes is 10 nm to 2 μm.5. The catalyst structure of claim 1 , wherein a diameter of each of the carbon nanotubes is 1 nm to 30 nm.6. The catalyst structure of claim 1 , wherein a thickness of each of the layered hydroxides is 0.5 nm to 50 nm.7. The catalyst structure of claim 1 , wherein the layered hydroxides are nickel-iron layered ...

METHOD FOR LIMITING THE EMISSION OF DUST FROM CATALYST GRAINS

The present invention relates to a method for limiting the emission of dust from catalyst grains. Said method comprises the following two consecutive steps: a first step of performing a heat treatment of the catalyst grains at a temperature no lower than 100° C., followed by a second step of coating the surface of the catalyst grains by placing same in contact with one or more coating materials having a melting point T no lower than 45° C. and which are injected in a solid state, said second step being carried out with no further addition of heat, at a temperature of T−60° C. to T−1° C., while remaining no lower than 40° C. 1. A process for limiting the emission of dust from catalyst grains comprising the following two consecutive steps:a first step consisting in carrying out a heat treatment of the catalyst grains at a temperature greater than or equal to 100° C., followed bya second step that consists in carrying out a coating of the surface of the catalyst grains, by placing these grains in contact with one or more coating materials having a melting point T greater than or equal to 45° C. and which are introduced in the solid state, said second step being carried out without any fresh supply of heat, at a temperature ranging from T−60° C. to T−1° C., while remaining greater than or equal to 40° C.2. The process as claimed in claim 1 , characterized in that it is carried out continuously.3. The process of claim 1 , characterized in that said second step is carried out on an unheated moving bed claim 1 , fed continuously by the catalyst directly derived from the first step on the one hand claim 1 , and by the coating material(s) on the other hand.4. The process of claim 1 , characterized in that the first step is carried out at a temperature ranging from 120° C. to 650° C. claim 1 , preferably from 150° C. to 550° C. claim 1 , and better still from 200° C. to 500° C.5. The process of claim 1 , characterized in that the first step is selected from a catalyst drying ...

CATALYSTS CONTAINING SPECIFIC TITANIUM POLYMORPHIC FORMS

A catalyst composition which comprises titanium, wherein part of the titanium is present as a titanium dioxide phase and at least some of the titanium dioxide phase is in the brookite polymorphic form is provided. In some embodiments, the catalyst also comprises a silica support which exhibits a high surface area and pore volume. Methods of preparing the catalyst and its use in an epoxidation reaction are also provided. 2. The catalyst composition of claim 1 , wherein the brookite form of the titanium dioxide phase is present in an amount from about 0.1 wt. % to about 50 wt. % of the titanium dioxide phase.3. The catalyst composition of claim 1 , wherein the catalyst composition has a powder X-ray diffraction spectra comprising peaks at about 25.3 claim 1 , 25.7 claim 1 , 30.8 claim 1 , 36.1 claim 1 , and 48.0 °2θ.4. The catalyst composition of claim 1 , wherein the silica support comprises amorphous silica having:{'sup': '2', '(a) a surface area greater than 800 m/g; and'}{'sup': '3', '(b) a pore volume greater than 1.0 cm/g.'}5. The catalyst composition of claim 1 , wherein the amount of titanium dioxide phase is from about 1 wt. % to about 8 wt. % of the catalyst composition.6. The catalyst composition of claim 1 , further comprising a plurality of organosilicategroups on the surface of the catalyst composition.7. The catalyst composition of claim 6 , wherein the organosilicategroup is —OSi(CH).9. The method of claim 8 , wherein the silica support is dried at a temperature from about 100° C. to about 850° C. for a time period from about 1 hour to about 48 hours.10. The method of claim 8 , wherein the titanium-containing reagent is titanium(IV) alkoxide claim 8 , titanium(IV) halide claim 8 , or a mixed titanium(IV) alkoxide halide.11. The method of claim 10 , wherein the titanium(IV) halide is TiCl.12. The method of claim 11 , wherein the TiClis deposited to the dried silica support as a liquid claim 11 , as a gas claim 11 , or as part of a solution claim 11 , ...

Methods of Preparing a Catalyst with Low HRVOC Emissions

A method of preparing a catalyst comprising a) drying a chrominated-silica support followed by contacting with a titanium(IV) alkoxide to form a metalized support, b) drying a metalized support followed by contacting with an aqueous alkaline solution comprising from about 3 wt. % to about 20 wt. % of a nitrogen-containing compound to form a hydrolyzed metalized support, and c) drying the hydrolyzed metalized support followed by calcination at a temperature in a range of from about 400° C. to about 1000° C. and maintaining the temperature in the range of from about 400° C. to about 1000° C. for a time period of from about 1 minute to about 24 hours to form the catalyst. 1. A hydrolyzed pre-catalyst composition prepared by a process comprising:contacting (i) a dried silica support; (ii) a titanium-containing compound comprising a titanium(IV) alkoxide; and (iii) an aqueous alkaline solution comprising from about 3 wt. % to about 20 wt. % of a nitrogen-containing compound; andremoving the aqueous alkaline solution to form a pre-catalyst composition wherein the pre-catalyst composition has a carbon content that is reduced by greater than about 50% when compared to a similar pre-catalyst composition prepared in an absence of the aqueous alkaline solution.2. The pre-catalyst composition of wherein the titanium(IV) alkoxide comprises comprises titanium(IV) ethoxide claim 1 , titanium(IV) isopropoxide claim 1 , titanium(IV) n-propoxide claim 1 , titanium(IV) n-butoxide claim 1 , titanium(IV) isobutoxide claim 1 , or a combination thereof.3. The pre-catalyst composition of claim 1 , wherein the titanium-containing compound is titanium(IV) isopropoxide.4. The pre-catalyst composition of claim 1 , wherein the titanium-containing compound is present in an amount of from about 0.01 wt. % to about 10.0 wt. % based on the weight of the pre-catalyst composition.5. The pre-catalyst composition of claim 1 , wherein a weight ratio of aqueous alkaline solution to water is from about ...

Supported oxide nh3-scr catalysts with dual site surface species and synthesis processes

A process for preparing a catalyst material, includes the steps of: (a) providing a support material having surface hydroxyl (OH) groups, wherein the support material is ceria (CeO 2 ), zirconia (ZrO 2 ) or a combination of thereof; (b) reacting the support material having surface hydroxyl (OH) groups of step (a) with a precursor containing two transition metal atoms, each chosen independently from the group consisting of: W, Mo, Cr, Ta, Nb, V, Mn; (c) calcining the product obtained in step (b) in order to provide a catalyst material showing dual site surface species containing pairs of transition metal atoms derived from the precursor that are present in oxide form on the support material. Additionally, a catalyst material is obtained by the process set out above, and the catalyst material is used as an ammonia selective catalytic reduction (NH 3 -SCR) catalyst for nitrogen oxides (NOx) reduction.

Three-way-catalyst

The present invention relates to a three-way catalyst (TWC) for treatment of exhaust gases of internal combustion engines operated with a predominantly stoichiometric air/fuel ratio, so called spark ignited engines.

A Short Channel Ordered Mesoporous Carbon Loaded Indium Cobalt Sulfide and Indium Nickel Sulfide Ternary Composite Photocatalyst, the Preparation Method Thereof and the Use Thereof

A short channel ordered mesoporous carbon loaded indium cobalt sulfide and indium nickel sulfide ternary composite photocatalyst, and a preparation method and application thereof. The short channel ordered mesoporous carbon loaded indium cobalt sulfide and indium nickel sulfide ternary composite photocatalyst is prepared by mixing pretreated short channel mesoporous carbon with cobalt salt, nickel salt, indium salt and reducing agent with a hydrothermal reaction. The short channel ordered mesoporous carbon is obtained by calcining a short channel ordered mesoporous silica and a carbon source under the protection of nitrogen, wherein the short channel ordered mesoporous silica is prepared by carrying out reactions of sol-gel-hydrothermal-calcination sequentially using a mixture of a surfactant, a hydrochloric acid solution, ammonium fluoride and tetraethyl orthosilicate. The photocatalyst has strong adsorption and visible light catalytic activity on VOCs, and can effectively adsorb and decompose the enriched VOCs in situ on the surface of the catalyst. 1. A preparation method of a short channel ordered mesoporous carbon loaded indium cobalt sulfide and indium nickel sulfide ternary composite photocatalyst , wherein the preparation method comprises the following steps:S1. adding 0.1-10 g surfactant to 10-120 mL water and concentrated hydrochloric acid solution with a volume ratio of 1-20:1 and stirring at 30-90° C. for 0.5-24 h to obtain a mixed solution A;S2. adding 0.01-0.1 g ammonium fluoride to the mixed solution A obtained in step S1, stirring for 0.5-60 min, then adding 5-50 mL mixed solution of alkane and tetraethyl orthosilicate with a volume ratio of 1-10:1 and stirring at 30-90° C. for 2-72 h to obtain a mixed solution B;S3. loading the mixed solution B obtained in step S2 into a 25-200 mL polytetrafluoroethylene (PTFE) vessel to conduct a hydrothermal reaction at 60-250° C. for 2-72 h; after cooling in the PTFE vessel, collecting the lower layer sediment ...

Method of producing cylindrical film-coated honeycomb structure and method of producing catalyst

Provided is a method of producing a film-coated cylindrical honeycomb structure formed with a coating liquid on an outer portion of a cylindrical honeycomb structure including partition walls and the outer portion, the partition walls forming a plurality of cells, the outer portion serving as a circumferential side. In the method, the cylindrical honeycomb structure is mounted between at least two rollers such that the circumferential side of the cylindrical honeycomb structure contacts with circumferential sides of the rollers, the coating liquid supplied from an application part is deposited on the cylindrical honeycomb structure while being rotated, and then the deposited coating liquid is dried or cured to form the film on the outer portion.

METHOD OF PRODUCING CATALYST OR ADSORBENT CARRIER, AND CATALYST OR ADSORBENT CARRIER

Provided is a method of producing a catalyst or adsorbent carrier and a catalyst or adsorbent carrier which can enhance a catalyst or adsorbent function, and prevent fall-off of catalyst particles or adsorbent particles. The surface of a metal base material made of aluminum or an aluminum alloy is subjected to an etching process using an etchant containing iron chloride and an oxide to convert the surface to an uneven and rough surface. The uneven and rough surface of the metal base material is subjected to an anodizing process to form a porous coating along the uneven and rough surface. A large number of catalyst or adsorbent particles are thus carried on the surface of the metal base material on which the porous coating is formed along the uneven and rough surface. 1: A method of producing a carrier in which a large number of catalyst particles or adsorbent particles are carried on a surface of a metal base material made of aluminum or an aluminum alloy , the method comprising:performing an etching process using an etchant containing iron chloride and an oxide on the surface of the metal base material made of aluminum or the aluminum alloy, to convert the surface to an uneven and rough surface;performing an anodizing process on the uneven and rough surface of the metal base material, to form a porous coating along the uneven and rough surface; andcausing the large number of the catalyst particles or the adsorbent particles to be carried on the surface of the metal base material on which the porous coating is formed along the uneven and rough surface, whereinthe carrier is a catalyst carrier or an adsorbent carrier.2: The method of producing the carrier according to claim 1 , whereininternal spaces of recesses at the uneven and rough surface are filled with the catalyst particles or the adsorbent particles, thereby carrying the catalyst particles or the adsorbent particles.3: A carrier in which a large number of catalyst particles or adsorbent particles are carried ...

SILICA-MODIFIED CATALYST SUPPORTS

A method for preparing a silica-modified catalyst support is described comprising: (i) applying an alkyl silicate solution to a porous support material in an amount to produce a silica content of the silica-modified catalyst support, expressed as Si, in the range 0.25 to 15% by weight, (ii) drying the resulting silicate-modified support and recovering a first alcoholic solution, (iii) optionally treating the dried silicate-modified support with water, drying the resulting water-treated support and recovering a second alcoholic solution, and (iv) calcining the dried material to form the silica-modified catalyst support, wherein the first alcoholic solution contains ≤10 vol % water and at least a portion of the first alcoholic solution is mixed with alkyl silicate to form the alkyl silicate solution. 1. A method for preparing a silica-modified catalyst support , comprising:(i) applying an alkyl silicate solution to a porous support material in an amount to produce a silicate-modified catalyst support having a silica content, expressed as Si, in the range of 0.25 to 15% by weight,(ii) drying the silicate-modified support and recovering a first alcoholic solution, and(iii) calcining the dried silicate-modified support to form the silica-modified catalyst support,wherein the first alcoholic solution contains ≤0.05 to 10 vol % water and at least a portion of the first alcoholic solution is mixed with alkyl silicate to form the alkyl silicate solution.2. The method according to claim 1 , wherein the alkyl silicate concentration in the alkyl silicate solution is in the range of 50-75% by weight.3. The method according to claim 1 , wherein the first alcoholic solution contains <5% water by volume.4. The method according to claim 1 , wherein the porous support material has a moisture content of ≤6.0 wt %.5. The method according to claim 4 , further comprising pre-drying the porous support material.6. The method according to claim 1 , further comprising adjusting the water ...

Catalyst for removing volatile organic compounds and preparation method therefor

The invention discloses a catalyst for removing volatile organic compounds and a preparation method therefor. In the catalyst, aluminum oxide modified by iron, cobalt and nickel is used as a carrier, cordierite honeycomb ceramic is used as a matrix, and an extremely low content of a mixture of platinum and palladium is used as an active component; a molar ratio of platinum to palladium is 0-1:0-9, and an amount of the mixture of platinum and palladium accounts for 0.01% to 0.05% of a mass of the matrix; and an amount of the carrier accounts for 3% to 5% of the mass of the matrix.

CATALYST SUPPORT MATERIALS, CATALYST SUPPORTS, CATALYSTS AND REACTION METHODS USING CATALYSTS

A catalyst having a core comprising a composite (A) of SiC grains and a protective matrix of one or more metal oxides, such as alumina, in voids between the SiC grains, said core having a density >60% of theoretical density, and a catalytically active layer (C) containing, e.g., Ni adhered to the core. A catalyst support comprising a composite of SiC grains and a protective matrix of one or more metal oxides in voids between the SiC grains is also provided, along with a method of fabricating a catalyst core. The catalyst can be used in Fischer-TRopsch synthesis or in steam methane reforming. 1. A catalyst comprising:(a) a core comprising a composite of SiC grains and a protective matrix of one or more metal oxides in voids between the SiC grains, said core having a density ≥60% of theoretical density; and(b) a catalytically active layer adhered to said core.2. The catalyst of claim 1 , wherein said one or more metal oxides are chosen from the group consisting of alumina claim 1 , titania claim 1 , and silica.3. The catalyst of claim 2 , wherein said protective matrix comprises AlO.4. The catalyst of claim 3 , wherein said protective matrix further comprises one or more additional metal oxides chosen from the group consisting of silica and mixed oxides of aluminum and silicon.5. The catalyst of claim 3 , wherein said mixed oxides of aluminum and silicon comprises AlSiO.6. The catalyst of claim 3 , wherein said protective matrix further comprises one or more additional metal oxides chosen from the group consisting of titania claim 3 , and mixed oxides of aluminum and titanium.7. The catalyst of any preceding claim claim 3 , wherein the volume ratio of metals in the metal oxide protective matrix to SiC in the core claim 3 , based on the relative amounts in the starting materials claim 3 , is between about 0.05 and about 0.50 claim 3 , between about 0.05 and about 0.30 claim 3 , or between about 0.10 and about 0.25.8. The catalyst of any preceding claim claim 3 , ...

NOVEL METHOD OF MANUFACTURE OF METAL NANOPARTICLES AND METAL SINGLE-ATOM MATERIALS ON VARIOUS SUBSTRATES AND NOVEL COMPOSITIONS

The present invention discloses a novel method and novel compositions comprising well-dispersed particulate metal materials, including metal nanoparticles and/or metal single-atom materials, on various substrates, said method comprising the use of atomic layer deposition (ALD) and optimization of the metal precursor dose time and the number of ALD cycles. Illustrative of the metals are Fe, Ni, Co, Ru, Rh, Ir, Os, Pt, Pd, and the like; and illustrative of the various substrates are carbon nanotubes (CNTs) (including multi-walled carbon nanotubes (MWCNTs), SiO, TiO, alumina, CeO, ZnO, ZrO, activated carbon, CuO, FeO, MgO, CaO, graphene, and the like. The density of the dispersed metals on the substrates is significantly higher than the metal density 2. The method of claim 1 , wherein the weight ratio of the suitable metal precursor to suitable substrate is in the range between about 0.05 and about 1.3. The method of claim 2 , wherein the weight ratio of the suitable metal precursor to suitable substrate is in the range between about 0.08 and about 0.15.4. The method of claim 1 , wherein in step (d) the degassing temperature is about 150° C.5. The method of claim 1 , wherein in step (d) the degassing period of time is about 10 hours.6. The method of claim 1 , wherein in step (f) the reactor temperature is about 400° C.7. The method of claim 1 , wherein in steps (g) and (i) the gas flow rate is controlled by mass flow controllers.8. The method of claim 1 , wherein in step (h) the bubbler is heated to about 115° C.9. The method of claim 8 , wherein the well-dispersed metal/substrate composition is a metal nanoparticle/substrate composition.10. The method of claim 8 , wherein the well-dispersed metal/substrate composition is a single metal/substrate composition.11. The method of claim 1 , wherein the metal is selected from Fe claim 1 , Ni claim 1 , Co claim 1 , Ru claim 1 , Rh claim 1 , Ir claim 1 , Os claim 1 , Pt claim 1 , and Pd.12. The method of claim 1 , wherein the ...

EPOXIDATION CATALYSTS BASED ON METAL ALKOXIDE PRETREATED SUPPORTS

The present disclosure generally relates to a silica-titanium catalyst prepared by first reacting a solid support with a metal alkoxide and then depositing titanium onto the solid support for the epoxidation of alkenes and aralkenes and a method of preparing the catalyst thereof. In some embodiments, the present disclosure relates to methods of using the catalyst described herein for the production of epoxides. 1. A method comprising:a) obtaining a solid silica support; {'br': None, 'sub': 'Y', 'SiX;'}, 'b) reacting the solid silica support with a silicon alkoxide of the formula [{'sub': (C≦12)', '(C≦12)', '(C≦12)', '(C≦12)', '(C≦12)', '(C≦12)', '(C≦12)', '(C≦12)', '(C≦12), 'each X is independently halide, alkoxylate, alkenyloxylate, alkynyloxylate, aryloxylate, heteroaryloxylate, aralkyloxylate, aralkenyloxylate, heterocycloalkyloxylate, acyloxylate, or a substituted version of any of these groups bearing a net negative charge; and'}, 'Y is equal to the oxidation state of Si; and, 'whereinc) depositing titanium from a titanium source on the solid silica support thereby forming a catalyst.2. The method of claim 1 , wherein the solid silica support has an average particle size of 0.7 mm-3.0 mm.3. The method of claim 1 , wherein the solid silica support has a surface area of 300-1100 m/g.4. The method of claim 1 , wherein the solid silica support has a pore volume of 0.5-3.0 mL/g.5. The method of claim 1 , wherein the silicon oxide has the formula:{'br': None, 'sub': '4', 'SiX;'} {'sub': (C≦12)', '(C≦12)', '(C≦12), 'each X is independently halide, alkoxylate, aralkoxylate, aryloxylate, or a substituted version of any of these groups.'}, 'wherein6. The method of claim 5 , wherein X is selected from the group consisting of methoxylate claim 5 , ethyoxylate claim 5 , isopropoxylate and tert-butoxylate.7. The method of claim 1 , wherein the titanium source is selected from the group consisting of titanium trihalide claim 1 , titanium tetrahalide and titanium ...

METHOD FOR COATING A FILTER SUBSTRATE

A method of coating a filter substrate comprising a plurality of channels and an apparatus therefor. The method comprises the steps of: 1. A method of coating a filter substrate comprising a plurality of channels , which method comprises the steps of:(a) introducing a pre-determined amount of a liquid into a containment means at an upper end of the filter substrate; and(b) coating the channels having open ends at the upper end of the filter substrate with the liquid from the containment means.2. A method according to claim 1 , wherein step (b) is a step of (b) applying a vacuum to a lower end of the filter substrate to draw the liquid along the channels having open ends at the upper end of the filter substrate.3. A method according to claim 1 , wherein step (b) is a step of (b) draining the liquid from the containment means into the channels having open ends at the upper end of the filter substrate.4. A method according to claim 1 , wherein the liquid has a viscosity of ≤600 cP (as measured at 20° C. on a Brookfield RV DVII+ Extra Pro viscometer using a SC4-27 spindle at 50 rpm spindle speed).5. A method according to claim 1 , wherein the liquid has a viscosity of ≤500 cP (at a shear rate of 20 s).6. A method according to claim 4 , wherein the liquid has a viscosity of 10 to 100 cP (as measured at 20° C. on a Brookfield RV DVII+ Extra Pro viscometer using a SC4-27 spindle at 50 rpm spindle speed).7. A method according to claim 1 , wherein step (a) is a step of (a) depositing a pre-determined amount of a liquid into a containment means at an upper end of the filter substrate using a liquid dosing head.8. A method according to claim 7 , wherein the liquid dosing head comprises a plurality of apertures arranged to deposit the liquid evenly onto an upper end face of the filter substrate.9. A method according to claim 1 , wherein the pre-determined amount of the liquid is a pre-determined volume of the liquid.10. A method according to claim 1 , wherein the pre-determined ...

Method of forming a self-cleaning film system

A method of forming a self-cleaning film system includes depositing a perfluorocarbon siloxane polymer onto a substrate to form a first layer. The method includes removing a plurality of portions of the first layer to define a plurality of cavities in the first layer and form a plurality of projections that protrude from the substrate. The method includes depositing a photocatalytic material onto the plurality of projections and into the plurality of cavities to form a second layer comprising: a bonded portion disposed in the plurality of cavities and in contact with the substrate, and a non-bonded portion disposed on the plurality of projections and spaced apart from the substrate. The method also includes, after depositing the photocatalytic material, removing the non-bonded portion to thereby form the self-cleaning film system.

Process and catalyst for preparing 1,4-butanediol

The present invention relates to a process for preparing 1,4-butanediol (BDO) by hydrogenating 2-butyne-1,4-diol (BYD) or 4-hydroxybutanal (4-HBA) in the presence of a catalyst of the Raney type having a porous foam structure, wherein the macroscopic pores have sizes in the range of 100 to 5000 μm, and a bulk density of up to 0.8 kg/L.

CARBON NANOTUBE COMPOSITION AND METHOD OF PREPARING THE SAME

The present invention relates to a carbon nanotube composition including entangled-type carbon nanotubes and bundle-type carbon nanotubes, wherein the carbon nanotube composition has a specific surface area of 190 m/g to 240 m/g and a ratio of specific surface area to bulk density of 0.1 to 5.29. 1. A carbon nanotube composition comprising entangled-type carbon nanotubes and bundle-type carbon nanotubes ,{'sup': 2', '2, 'claim-text': {'br': None, 'i': 'X/Y≤', '0.1≤5.29\u2003\u2003'}, 'wherein the carbon nanotube composition has a specific surface area of 190 m/g to 240 m/g and satisfies the following Equation 1wherein, in Equation 1, X is a number representing a specific surface area of the carbon nanotube composition, andY is a number representing a bulk density of the carbon nanotube composition,{'sup': 2', '3, 'wherein a unit of the specific surface area is m/g, and a unit of the bulk density is kg/m.'}2. The carbon nanotube composition of claim 1 , wherein the specific surface area of the carbon nanotube composition is 193 m/g to 239 m/g.3. The carbon nanotube composition of claim 1 , wherein the specific surface area of the carbon nanotube composition is 195 m/g to 239 m/g.4. The carbon nanotube composition of claim 1 , wherein claim 1 , the value of Equation 1 is 1 to 5.14.5. The carbon nanotube composition of claim 1 , wherein claim 1 , the value of Equation 1 is 1.5 to 5.6. The carbon nanotube composition of claim 1 , wherein the bulk density of the carbon nanotube composition is 25 kg/mto 150 kg/m.7. The carbon nanotube composition of claim 1 , wherein the bulk density of the carbon nanotube composition is 35 kg/mto 130 kg/m.8. The carbon nanotube composition of claim 1 , wherein the carbon nanotube composition comprises carbon nanotube units having an average diameter of 10 nm to 30 nm.9. The carbon nanotube composition of claim 8 , wherein the carbon nanotube units have an interlayer distance (d) of a carbon crystal of 0.335 nm to 0.342 nm ...

METHOD OF FORMING CATALYST LAYER

According to an embodiment, a method of forming a catalyst layer includes performing displacement plating on a substrate having a surface that is made of a semiconductor and includes a plurality of projections, thereby depositing a catalytic metal at positions of the plurality of projections.

Fabricating Porous Metallic Coatings Via Electrodeposition and Compositions Thereof

A method is provided for creating a porous coating on a surface of a substrate by electrodeposition. The substrate is a part of the cathode. An anode is also provided. A coating is deposited or disposed on the surface by applying a voltage that creates a plurality of porous structures on the surface to be coated. Continuing to apply a voltage creates additional porosity and causes portions of the attached porous structures to detach. A covering layer is created by applying a voltage that creates a thin layer that covers the attached porous structures and the detached portions which binds the porous structures and detached portions together. 1. An article , comprising: a surface having at least one region; and a porous coating on said at least one region of said surface , wherein the coating comprises a plurality of porous structures attached to said at least one region of said surface and at least one layer covering said porous structures.228-. (canceled)29. An application of the article of wherein said coating is used in anti-corrosion claim 1 , anti-fouling claim 1 , anti-condensation claim 1 , anti-ice claim 1 , self-cleaning claim 1 , anti-condensation claim 1 , anti-friction claim 1 , or anti-clotting applications.30. An application of the article of wherein said porous coating is used to enhance the bonding of said coating to paint or polymer.31. An application of the article of wherein said porous coating is used as a catalyst.32. The application of claim 31 , wherein the said covering layer comprises a catalytic material.3335-. (canceled) This application claims the benefit U.S. Provisional Application No. 61/765,438, filed Feb. 15, 2013 and herein incorporated by reference.Not Applicable.Not Applicable.The manufacture and use of porous coatings on surfaces have received great interest due to their importance in both fundamental research and commercial applications. In particular, porous metallic coatings are widely used as catalysts or utilized to enhance ...

HYBRID MATERIAL AND METHOD FOR THE PRODUCTION THEREOF

The invention relates to a material in the form of a cellular solid monolith consisting of an inorganic oxide polymer. Said monolith comprises macropores which have an average size dof 4 μm to 50 μm, mesopores that have an average size dof 20 to 30 Å, and micropores which have an average size dof 5 à 10 Å, said pores being interconnected. The inorganic oxide polymer has organic groups R of formula —(CH)—R, wherein 0≤n≤5, and Ris selected from among a thiol group, a pyrrole group, an amino group having one or more optional, optionally substituted alkyl, alkylamino, or aryl substituents, an alkyl group, or a phenyl group optionally having an alkyl-type substituent R. The disclosed material can be used as a substrate for a metal catalyst and for decontaminating liquid or gaseous media. 1. A material in the form of a solid cellular monolith comprising a polymer of an inorganic oxide , wherein:{'sub': A', 'E', 'I, 'said cellular monolith has macropores having a mean size dfrom 4 μm to 50 μm, mesopores having a mean size dfrom 20 to 30 Å and micropores having a mean size dfrom 5 to 10 Å, said pores being interconnected;'}{'sub': 2', 'n, 'sup': 1', '1, 'the inorganic oxide polymer carries organic R groups corresponding to the formula —(CH)—Rin which 0≤n≤5, and Rrepresents a thiol group, a pyrrolyl group, an alkyl group, an amino group that may carry one or more possibly substituted alkyl, alkylamino or aryl substituents, or a phenyl group that may carry an alkyl substituent.'}2. The material as claimed in claim 1 , wherein the inorganic oxide is an oxide of one or more elements claim 1 , at least one of these elements being of the type capable of forming an alkoxide.3. The material as claimed in claim 2 , wherein at least one of the metals is chosen from Si claim 2 , Ti claim 2 , Zr claim 2 , Th claim 2 , Nb claim 2 , Ta claim 2 , V claim 2 , W and Al.4. The material as claimed in claim 2 , wherein the oxide is a mixed oxide additionally containing B and Sn.5. The material ...

METHANE OXIDATION CATALYST, PROCESS TO PREPARE THE SAME AND METHOD OF USING THE SAME

The invention provides a process for preparing a methane oxidation catalyst, a methane oxidation catalyst thus prepared and a method of oxidizing methane. 1. A process for preparing a methane oxidation catalyst comprising the following steps:a.) calcining a non-modified zirconia precursor at a temperature in the range of from 675 to 1050° C. to prepare tetragonal zirconia wherein the weight ratio of tetragonal zirconia to monoclinic zirconia, if any is present, is greater than 31:1;b.) impregnating the zirconia obtained from step b.) with a noble metal precursor-comprising impregnation solution;c.) drying the wet noble metal-impregnated zirconia at a temperature of no more than 120° C.; andd.) calcining the dried noble metal-impregnated zirconia at a temperature in the range of from 400 to 650° C. to prepare a methane oxidation catalyst wherein the weight ratio of tetragonal zirconia to monoclinic zirconia of the catalyst is in the range of from 1:1 to 31:1.2. The process of claim 1 , wherein the weight ratio of tetragonal zirconia to monoclinic zirconia of the calcined zirconia precursor in step a.) is in the range of from 35:1 to 1000:1.3. The process of wherein no detectable monoclinic zirconia is present after the calcination of step a.).4. The process of claim 1 , further comprising depositing the noble metal-impregnated zirconia after calcination in step (d) in the form of a layer claim 1 , film or coating on a ceramic or metallic monolith substrate.5. The process of claim 1 , further comprising depositing the zirconia obtained in step (a) in the form of a layer claim 1 , film or coating on a ceramic or metallic monolith substrate and subsequently impregnating and treating the deposited zirconia according to steps (b) to (d).6. The process of claim 1 , wherein the impregnated zirconia obtained in step (d) or the zirconia obtained in step (a) is deposited on the ceramic or metallic monolith by a washcoating step.7. The process of claim 1 , wherein the ...

METHOD OF MANUFACTURING OPEN-CELL BODIES AND BODIES MANUFACTURED USING SAID METHOD

In the method in accordance with the invention of manufacturing an open-cell body from a metal or ceramic material, a procedure is followed such that individual parts of an open pore plastic in a size which corresponds to the size of the bodies to be manufactured while taking account of the shrinkage on a sintering or an open pore plastic element having predetermined break points which take account of the size and geometrical design of bodies to be manufactured while considering the shrinkage in the sintering are/is infiltrated and coated with a suspension in which, in addition to a liquid, at least one powdery material is contained with which the bodies are manufactured. Organic components are expelled after a first heat treatment. Subsequently, a sintering is carried out in which open-cell bodies are obtained, wherein the parts of porous plastic provided with the suspension are separated before the first heat treatment and/or sintering or wherein, after the sintering, the open-cell element which is obtained from the plastic element from the material with which the bodies are formed is cut by forces acting at the desired break points and thereby bodies can be obtained which are present in separated form. 1. A method of manufacturing an open-cell body from a metal or ceramic material , wherein individual parts of an open pore plastic in a size which corresponds to the size of the bodies to be manufactured while taking account of the shrinkage on a sintering or{'b': 1', '2, 'an open pore plastic element () having predetermined break points () which take account of the size and geometrical design of bodies to be manufactured while considering the shrinkage in the sintering'}are/is infiltrated and coated with a suspension in which, in addition to a liquid, at least one powdery material is contained with which the bodies are manufactured; andorganic components are expelled after a first heat treatment, and subsequentlya sintering is carried out in which open-cell bodies ...

Process for the Preparation of an Additive Comprising Supported and Dispersed TIO2 Particles

Process for the preparation of an additive comprising TiOparticles dispersed on a support of pseudo-layered phyllosilicate-type, comprising the dispersion in water of the support, the acid activation of the support and the high-shear dispersion of the support with the TiOparticles Use of the particles obtained by this process as additives with photocatalytic activity for water purification and disinfection, for purification of polluted gas streams and to provide materials, in particular construction materials, with self-cleaning, biocide, deodorization and/or pollution reduction properties in the presence of air and ultraviolet light. 1. A process for the preparation of an additive , where the additive comprises TiOparticles supported and dispersed on a pseudo-layered phyllosilicate support , comprising the following stages:i) the dispersion in water of the support with high shear;ii) the acid activation of the support of stage (i); and{'sub': '2', 'iii) the addition of the TiOparticles on the support of stage (ii) with high-shear mixing.'}2. The process according to claim 1 , further comprising the following stage after stage (iii):{'sub': 2', '2, 'iv) solid/liquid separation of the support with the TiOparticles of the dispersion liquid, and later elimination of the residual water that remains in the support with the TiOparticles by drying at atmospheric pressure, at low pressure or in a vacuum.'}3. The process according to claim 2 , where solid/liquid separation of the support with the TiOparticles is performed by a filtration.4. The process according to claim 1 , where the support is sepiolite or attapulgite.5. The process according to claim 1 , where the support is rheological grade sepiolite or rheological grade attapulgite.6. The process according to claim 1 , where the TiOparticles within the additive are selected from anatase phase claim 1 , rutile phase claim 1 , brookite phase and a mixture thereof.7. The process according to claim 1 , where the support is ...

Monolithic catalyst comprising molecular sieve membrane and method for perparing the monolithic catalyst

A monolithic catalyst, including cobalt, a metal matrix, a molecular sieve membrane, and an additive. The metal matrix is silver, gold, copper, platinum, titanium, molybdenum, iron, tin, or an alloy thereof. The molecular sieve membrane is mesoporous silica SBA-16 which is disposed on the surface of the metal matrix and is a carrier of the active component and the additive. The thickness of the carrier is between 26 and 67 μm. The additive is lanthanum, zirconium, cerium, rhodium, platinum, rhenium, ruthenium, titanium, magnesium, calcium, strontium, or a mixture thereof. A method for preparing the monolithic catalyst is also provided.

Catalytic hollow fibers

A hollow fiber for use in production of hydrogen gas. The hollow fiber contains a porous support layer having an outer surface and an inner surface, a catalyst layer coated on the outer surface, and a selection layer coated on the inner surface. Also disclosed is a method of preparing such a hollow fiber.

METHOD FOR PREPARING SUPPORTED METAL CATALYST AND SUPPORTED METAL CATALYST PREPARED THEREFROM

Disclosed is a method for preparing a metal catalyst composite. The method includes pre-treating a carbon support in a reactor, and depositing a metal precursor on the pre-treated carbon support. The pre-treating the carbon support may include exposing the carbon support to a nucleating agent, for example, titanium tetrachloride (TiCl), silicon tetrachloride (SiCl) and carbon tetrachloride (CCl). 1. A method for preparing a metal catalyst composite , comprising:pre-treating a carbon support in a reactor; anddepositing a metal precursor on the pre-treated carbon support,wherein the pre-treating the carbon support comprises exposing the carbon support to a nucleating agent.2. The method of claim 1 , wherein the nucleating agent is one or more selected from the group consisting of titanium tetrachloride (TiCl) claim 1 , silicon tetrachloride (SiCl) and carbon tetrachloride (CCl).3. The method of claim 1 , wherein claim 1 , an inner pressure of the reactor is maintained at about 10Torr to 1 Torr.4. The method of claim 1 , wherein the carbon support comprises carbon black.5. The method of claim 1 , wherein in the pre-treating claim 1 , the carbon support is exposed to the nucleating agent for about 10 minutes to 20 minutes.6. The method of claim 1 , wherein the pre-treating the carbon support comprises heating the reactor.7. The method of claim 6 , wherein claim 6 , in the pre-treating the carbon support claim 6 , an inner temperature of the reactor is within a range of about 200° C. to 400° C.8. The method of claim 7 , wherein claim 7 , in the pre-treating the carbon support claim 7 , the inner temperature of the reactor is maintained for about 30 minutes to 3 hours.9. The method of claim 1 , wherein claim 1 , in the depositing the metal precursor claim 1 , the metal precursor comprises a platinum (Pt) precursor.10. The method of claim 1 , further comprising substituting the metal precursor with a metal claim 1 , after the depositing the metal precursor.11. The method ...

PROCESS FOR PREPARING PROTECTED RESIN CATALYSTS

The invention is in the field of catalysis. More specifically, the invention relates to a process for preparing a protected metal catalyst on a support; a matrix particle comprising the protected metal catalyst; and, a process for hydrogenating a hydrocarbon resin feedstock using the protected metal catalyst. 1. A process for preparing a protected metal catalyst on a support , which process comprises contacting and mixing a metal catalyst on a support with a molten polymer in an inert atmosphere thereby forming a slurry , wherein the metal comprises nickel and the support is in the form of a powder , wherein the polymer has a weight average molecular weight of 1000-35000 Daltons , a glass transition temperature of at least 50° C. , and a viscosity of at most 1000 cP , as measured by a Brookfield viscometer using a spindle no. 3 at 50 rpm and at a temperature of 300° C. , and wherein the amount of polymer used is at least 60 wt. % , based on the total weight of the metal catalyst on the support and the polymer.2. The process of claim 1 , wherein the amount of polymer used is at least 65 wt. % based on the total weight of the metal catalyst on the support and the polymer.3. The process of claim 1 , wherein the amount of polymer used is at most 95 wt. % based on the total weight of the metal catalyst on the support and the polymer.4. The process of claim 1 , wherein the polymer has a weight average molecular weight of 1500-30000 Daltons.5. The process of claim 1 , wherein the polymer has a viscosity of at most 500 cP claim 1 , as measured by a Brookfield viscometer using a spindle no. 3 at 50 rpm and at a temperature of 180° C.6. The process of claim 1 , wherein the polymer is melted by heating to a temperature of 120-300° C.7. The process of claim 1 , wherein the polymer used is polystyrene and/or a polystyrene copolymer.8. The process of claim 1 , wherein the catalyst comprises nickel in an amount of 20-80 wt. % claim 1 , calculated as metallic nickel based on the ...

Cobalt-based catalyst on metal structure for selective production of synthetic oil via fischer-tropsch reaction, method of preparing the same, and method of selectively producing synthetic oil using the same

This invention relates to a cobalt-based catalyst on a metal structure for selective production of synthetic oil via Fischer-Tropsch reaction, a method of preparing the same and a method of selectively producing synthetic oil using the same, wherein zeolite, cobalt and a support are mixed and ground to give a catalyst sol, which is then uniformly thinly applied on the surface of a metal structure using a spray-coating process, thereby preventing generation of heat during Fischer-Tropsch reaction and selectively producing synthetic oil having a carbon chain shorter than that of wax. This catalyst is prepared by burning a powder mixture obtained by melt infiltration of a cobalt hydrate and a metal oxide support to give a catalyst powder including cobalt oxide/metal oxide support; hybridizing the catalyst powder including cobalt oxide/metal oxide support with a zeolite powder to give a hybrid catalyst powder; mixing the hybrid catalyst powder with an organic binder and an inorganic binder and grinding the mixed hybrid catalyst powder to give a hybrid catalyst sol; spray-coating a metal structure surface-treated with alumina by atomic layer deposition with the hybrid catalyst sol; and thermally treating the metal structure spray-coated with the hybrid catalyst sol.

METHOD FOR PRODUCING CHLORINE BY OXIDATION OF HYDROGEN CHLORIDE

The method for producing chlorine by oxidation of hydrogen chloride with oxygen in the presence of a catalyst in a fixed-bed reactor, wherein [I] a material containing hydrogen chloride and oxygen is allowed to contact a catalyst in a temperature range of 280 to 370° C., and [II] the material containing hydrogen chloride and oxygen has an oxygen concentration of 45 to 75 vol %. 1. A method for producing chlorine by oxidation of hydrogen chloride with oxygen in the presence of a catalyst in a fixed-bed reactor , wherein[I] a material containing hydrogen chloride and oxygen is allowed to contact a catalyst in a temperature range of 280 to 370° C., and[II] the material containing hydrogen chloride and oxygen has an oxygen concentration of 45 to 75 vol %.2. The method for producing chlorine according to claim 1 , wherein the hydrogen chloride is fed at a speed of 65 to 1500 L/h relative to 1 L of the catalyst.3. The method for producing chlorine according to claim 1 , wherein the catalyst contains a copper element claim 1 , an alkali metal element claim 1 , and a rare earth metal element.4. The method for producing chlorine according to claim 3 , wherein setting the mass of the catalyst as a whole as 100 mass % claim 3 , the catalyst has a copper element content of 1.0 mass % or more claim 3 , 12.0 mass % or less claim 3 , the mass ratio of the copper element to the alkali metal element is in the range of 1:0.2 to 1:2.0 claim 3 , and the mass ratio of the copper element to the rare earth metal element is in the range of 1:0.2 to 1:3.0.5. The method for producing chlorine according to claim 3 , wherein the rare earth metal element contained in the catalyst is at least one selected from the group consisting of praseodymium claim 3 , neodymium claim 3 , samarium claim 3 , and europium.6. The method for producing chlorine according to claim 3 , wherein the alkali metal element contained in the catalyst includes sodium and/or potassium.7. The method for producing chlorine ...

Production of Oil by Pyrolysis of Coal

Catalysts useful in transforming biomass to bio-oil are disclosed, as are methods for making such catalysts, and methods of transforming biomass to bio-oil. The catalysts are especially useful for, but are not limited to, microwave- and induction-heating based pyrolysis of biomass, solid waste, and other carbon containing materials into bio-oil. The catalysts can also be used for upgrading the bio-oil to enhance fuel quality. 1. A method of producing oil from coal by pyrolysis; said method comprising the steps of:(a) cleaning the surface of one or more metallic substrate particles, wherein each metallic substrate particle has a longest dimension between about 100 μm and about 5 mm;(b) oxidizing or nitriding the surfaces of the metallic substrate particles, to covalently attach oxide or nitride groups to the surfaces of the metallic substrate particles;(c) covalently bonding one or more linker groups to the oxide, to the nitride, or to the metal surface;(d) covalently bonding one or more seed layers to the one or more linker groups, wherein the one or more seed layers comprise ruthenium, rhodium, palladium, silver, osmium, iridium, platinum, gold, copper, rhenium, mercury, aluminum oxide, nickel(11) oxide, or nickel(11) oxide;(e) covalently bonding a catalyst layer to the one or more seed layers, wherein the catalyst layer comprises a metal, a metal oxide, a doped metal, or a zeolite; wherein the resulting catalyst/support composition is adapted to directly absorb electromagnetic energy from microwave irradiation, or electromagnetic induction, or both, and thereby to be rapidly heated to a temperature between about 250° C. and about 1000° C.;(f) heating the catalyst/support composition to a temperature between about 250° C. and about 1000° C. by microwave irradiation, or by electromagnetic induction, or both, in an inert atmosphere inside a reactor;(g) contacting coal with the heated catalyst/support composition for a time sufficient to transform at least a portion ...

Photocatalytic Composition for Water Purification

The present invention refers to lightweight and settable photocatalytic compositions and solid composites; methods of preparing the compositions and solid composites; and their use in water purification. The compositions are comprised of photocatalysts such as titanium dioxide (TiO 2 ) and zinc oxide (ZnO), lightweight glass bubbles, and a hydraulic cementing binder. The lightweight and settable photocatalytic compositions can be formed into lightweight photocatalytic solid composites and/or structures by mixing with water and moist curing. This invention also describes relatively simple, fast, and cost effective methodologies to photodope the TiO 2 —ZnO compositions and composites with silver (Ag), to enhance and extend the photocatalytic activity from the ultraviolet into the visible light spectrum. The lightweight and settable TiO 2 —ZnO and Ag—TiO 2 —ZnO compositions are used in making solids, structures, coatings, and continuous or semi-continuous water purification panels for purifying contaminated water.

METHOD OF FORMING A SELF-CLEANING FILM SYSTEM

A method of forming a self-cleaning film system includes depositing a photocatalytic material onto a substrate to form a first layer. The method also includes disposing a photoresist onto the first layer and then exposing the photoresist to light so that the photoresist has a developed portion and an undeveloped portion. The method includes removing the undeveloped portion so that the developed portion protrudes from the first layer. After removing, the method includes depositing a perfluorocarbon siloxane polymer onto the first layer to surround and contact the developed portion. After depositing the perfluorocarbon siloxane polymer, the method includes removing the developed portion to thereby form the self-cleaning film system. 1. A method of forming a self-cleaning film system , the method comprising:depositing a photocatalytic material onto a substrate to form a first layer;disposing a photoresist onto the first layer;after disposing the photoresist, exposing the photoresist to light so that the photoresist has a developed portion and an undeveloped portion;removing the undeveloped portion so that the developed portion protrudes from the first layer;after removing, depositing a perfluorocarbon siloxane polymer onto the first layer to surround and contact the developed portion; andafter depositing the perfluorocarbon siloxane polymer, removing the developed portion to thereby form the self-cleaning film system.2. The method of claim 1 , wherein removing the undeveloped portion includes covering a protected portion of the first layer.3. The method of claim 2 , wherein removing the undeveloped portion includes not covering an unprotected portion of the first layer.4. The method of claim 3 , further including claim 3 , after removing the undeveloped portion claim 3 , removing the unprotected portion.5. The method of claim 4 , wherein removing the unprotected portion includes acid etching away the unprotected portion so that the protected portion remains and ...

Methods of Preparing a Catalyst with Low HRVOC Emissions

A method of preparing a catalyst comprising a) drying a chrominated-silica support followed by contacting with a titanium(IV) alkoxide to form a metalized support, b) drying a metalized support followed by contacting with an aqueous alkaline solution comprising from about 3 wt. % to about 20 wt. % of a nitrogen-containing compound to form a hydrolyzed metalized support, and c) drying the hydrolyzed metalized support followed by calcination at a temperature in a range of from about 400° C. to about 1000° C. and maintaining the temperature in the range of from about 400° C. to about 1000° C. for a time period of from about 1 minute to about 24 hours to form the catalyst. 1. A method of preparing a hydrolyzed pre-catalyst comprising:a) drying a silica support by heating the silica support to a temperature in a range of from about 150° C. to about 250° C. and maintaining the temperature of the silica support in the range of from about 150° C. to about 250° C. for a time period of from about 1 hour to about 24 hours to form a dried support;b) contacting the dried support and a titanium(IV) alkoxide to form a titanated support;c) drying the titanated support by heating the titanated support to a temperature in a range of from about 50° C. to about 200° C. and maintaining the temperature of the titanated support in the range of from about 50° C. to about 200° C. for a time period of from about 30 minutes to about 6 hours to form a dried titanated support;d) contacting the dried titanated support and an aqueous alkaline solution comprising from about 3 wt. % to about 20 wt. % of a nitrogen-containing compound for a time period of from about 10 minutes to about 6 hours to form a mixture comprising a hydrolyzed titanated support wherein a weight ratio of the amount of aqueous alkaline solution to the amount of titanium(IV) alkoxide in the dried titanated support is from about 30:1 to about 3:1; ande) removing the hydrolyzed titanated support from the mixture comprising the ...

Microwave Assisted and Low-Temperature Fabrication of Nanowire Arrays on Scalable 2D and 3D Substrates

A method of making a titanium dioxide nanowire array includes contacting a substrate with a solvent comprising a titanium (III) precursor, an acid, and an oxidant while microwave heating the solvent, thereby forming a hydrogen titanate H2Ti2O5.H2O nanowire array. The hydrogen titanate nanowire array is annealed to form a titanium dioxide nanowire array. The substrate is seeded with titanium dioxide before starting the hydrothermal synthesis of the hydrogen titanate nanowire array. The titanium dioxide nanowire array is loaded with a platinum group metal to form an exhaust gas catalyst. The titanium dioxide nanowire array can be used to catalyze oxidation of combustion exhaust. 1. A method of making a hydrogen titanate (HTiO.HO) nanowire array , the method comprising:{'sub': 2', '2', '5', '2, 'contacting a substrate with a solvent comprising a titanium (III) precursor, an acid, and an oxidant while microwave heating the solvent, thereby forming a hydrogen titanate (HTiO.HO) nanowire array.'}2. The method of claim 1 , wherein the substrate comprises a cordierite honeycomb monolith.3. The method of claim 1 , wherein the solvent is a polar solvent.4. The method of claim 1 , wherein the solvent is a protic solvent.5. The method of claim 1 , wherein the solvent is water.6. The method of claim 1 , wherein the titanium (III) precursor is TiCl.7. The method of claim 1 , wherein the titanium (III) precursor is Ti(SO).8. The method of claim 1 , wherein the titanium (III) precursor is a titanium (III) alkoxide.9. The method of claim 1 , wherein the acid is hydrochloric acid (HCl).10. The method of claim 9 , wherein the acid is from about 25 wt. % to about 40 wt. % HCl.11. The method of claim 1 , wherein the acid is sulfuric acid (HSO).12. The method of claim 1 , wherein the oxidant is hydrogen peroxide.13. The method of claim 12 , wherein the hydrogen peroxide is from about 20 wt. % to about 40 wt. % in water.14. The method of claim 1 , wherein the solvent is heated by ...

AEROSOL PROCESSING METHOD FOR CONTROLLED COATING OF SURFACE SPECIES TO GENERATE CATALYSTS

A method of producing a catalyst comprises generating an aerosolized flow of catalyst support particles, heating a catalytically active compound precursor to produce a catalytically active compound precursor vapor, contacting the aerosolized flow of catalyst support particles with the catalytically active compound precursor vapor, and condensing the catalytically active compound precursor onto the catalyst support particles to produce the catalyst comprising catalytically active compound deposited on surfaces of the catalyst support particles. The method may further comprise aerosolizing a catalyst support precursor mixture, drying the aerosolized catalyst support precursor mixture in a first heating zone to form an aerosolized flow of catalyst support particles, and contacting the catalyst support particles with a catalytically active compound precursor vapor in a second heating zone to form the catalyst comprising the layer of the catalytically active compound deposited on surfaces of the catalyst of catalyst support particles. 1. A catalyst prepared by a process comprising the steps of:aerosolizing a catalyst support precursor mixture comprising a catalyst support precursor and a diluent;drying the aerosolized catalyst support precursor mixture to produce an aerosolized flow of catalyst support particles;heating a catalytically active compound precursor to produce a catalytically active compound precursor vapor;contacting the aerosolized flow of catalyst support particles with the catalytically active compound precursor vapor; andcondensing the catalytically active compound precursor to produce the catalyst comprising a catalytically active compound deposited on surfaces of the catalyst support particles,where the catalytically active compound deposited on surfaces of the catalyst support particles has an average crystalline size of less than 2.5 nanometers, where the average crystalline size is an average radius of particles of the catalytically active compound ...

COPPER MESH COATED WITH MANGANESE MOLYBDATE AND APPLICATION THEREOF IN THE SEPARATION OF OIL-WATER EMULSION AND DEGRADATION OF ORGANIC POLLUTANTS IN WATER

The invention aims to provide a copper mesh coated with manganese molybdate and application thereof in the separation of oil-water emulsion and degradation of organic pollutants in water. A large amount of nano-scale manganese molybdates are grown on the surface of a copper mesh through a two-step hydrothermal method. Thereby, a multifunctional composite material is prepared, which can effectively separate oil-water emulsion and degrade organic pollutants in water. The copper mesh has good recyclability. Most of all, the product is suitable for industrial production to achieve the purpose of treating water pollution. 1. A method for preparing a copper mesh coated with manganese molybdate , comprising the following steps;immersing a pretreated copper mesh in a manganese salt precursor solution and hydrothermally reacting to obtain a reactive copper mesh; andimmersing the reactive copper mesh in a sodium molybdate solution and hydrothermally reacting to obtain the copper mesh coated with manganese molybdate;wherein the manganese salt precursor includes manganese salt, sodium carbonate, and sodium citrate.2. The method according to claim 1 , wherein the manganese salt is manganese chloride tetrahydrate; the copper mesh is ultrasonically cleaned with acetone claim 1 , ethanol and deionized water separately to obtain pretreated copper mesh.3. The method according to claim 1 , further comprising claim 1 , at room temperature claim 1 , dissolving the manganese salt in water claim 1 , stirring and adding sodium citrate powder in claim 1 , and after stirring until the solution is colorless and transparent claim 1 , adding sodium carbonate powder to obtain the manganese salt precursor solution.4. The method according to claim 1 , wherein the hydrothermal reaction to obtain the reactive copper mesh is carried out at the temperature of 160° C. for 12 hours; the hydrothermal reaction to obtain the copper mesh coated with manganese molybdate is carried out at the temperature of ...

SURFACE-MODIFIED BORON NITRIDE NANOSTRUCTURE AND METHOD FOR PRODUCING SAME

The boron nitride nanostructure according to an embodiment of the present invention forms defects through surface modification and incorporates the metallic nanoparticles on the surface defects.

CORE-SHELL PARTICLES WITH CATALYTIC ACTIVITY

The present invention pertains to novel core-shell particles comprising a core of iron oxide and a shell of cobalt oxide, characterized in that they are spherical with a number average diameter, as measured by TEM, of between 1 and 20 nm. This invention is also directed to their uses in the manufacture of a catalyst, and to the method for preparing these particles, by precipitating cobalt oxide onto magnetite or hematite particles which are themselves precipitated from Fe(III) and optionally Fe(II) salts. 111.-. (canceled)12. Core-shell particles obtained according to a method comprising:(a) preparing an aqueous solution comprising a ferric salt, at a temperature of less than 50° C.;(b) adding at least one base to said aqueous solution, so as to obtain a suspension of iron oxide particles having a pH value of from 10 to 14;(c) washing the suspension;(d) adding a strong acid to the washed suspension to peptize the washed suspension;(e) reacting at least one base with said peptized suspension, until the pH reaches a value from 10 to 14, at a temperature of from 50 to 95° C.;(f) adding a cobalt salt to the heated suspension in order to obtain spherical particles having a core of iron oxide and a shell comprising cobalt oxide, wherein the spherical particles comprise a core of iron oxide and a shell of cobalt oxide, characterized in that the core-shell particles are spherical with a number average diameter, as measured by TEM, of between 1 and 20 nm.13. The core shell particles according to claim 12 , characterized in that the aqueous solution comprising the ferric salt further includes a ferrous salt in a molar ratio of Fe(III) to Fe(II) of 2:1 claim 12 , whereby the iron oxide particles are magnetite particles.14. The core shell particles according to claim 12 , characterized in that the ferric salt is ferric nitrate claim 12 , ferric chloride or ferric hydroxide.15. The core shell particles according to claim 13 , characterized in that the ferrous salt is ferrous ...

METHOD FOR FORMING CATALYTIC NANOCOATING

Provided is a method for forming catalytic nanocoating on a metal surface. The method comprises pretreating the metal surface by means of heat treatment at 500-800° C., forming a metaloxide support, and depositing catalytic nanosized metal and/or metaloxide particles on the metaloxide support and coating the metal surface with catalytic nanosized metal and/or metaloxide particles. Further, the invention relates to a catalyst and a use. 1. A method for forming a catalytic nanocoating on a metal surface , wherein the method comprisespretreating the metal surface by means of heat treatment at 500-800° C.,forming a metaloxide support, anddepositing catalytic nanosized metal and/or metaloxide particles on the metaloxide support and coating the metal surface with catalytic nanosized metal and/or metaloxide particles.2. The method according to claim 1 , wherein the metal surface is heat-treated by oxidizing.3. The method according to claim 1 , wherein the metaloxide support is formed by washcoating on the metal surface claim 1 , and catalytic nanosized metal and/or metaloxide particles are deposited by means of flame spray pyrolysis (FSP) method on the metal surface which has been coated with the metaloxide support.4. The method according to claim 3 , wherein the metal surface is washcoated with a metaloxide based slurry.5. The method according to claim 3 , wherein the washcoating is carried out by spraying or dip-coating.6. The method according to claim 3 , wherein the metaloxide support formed by washcoating is calcined at 400-800° C.7. The method according to claim 1 , wherein nanoparticles of the metaloxide support are formed by means of a flame spray pyrolysis (FSP) method claim 1 , catalytic nanosized metal and/or metaloxide particles are formed by means of chemical vapour synthesis (CVS) and deposited on the surface of the nanoparticles of the metaloxide support claim 1 , and the metal surface is coated with catalytic nanosized metal and/or metaloxide particles.8. ...

HIGHLY ACTIVE THERMALLY STABLE NANOPOROUS GOLD CATALYST

In one embodiment, a product includes a nanoporous gold structure comprising a plurality of ligaments, and a plurality of oxide particles deposited on the nanoporous gold structure; the oxide particles are characterized by a crystalline phase. 1. A product , comprisinga nanoporous gold structure comprising a plurality of ligaments; anda plurality of oxide particles deposited on the nanoporous gold structure, wherein the oxide particles are characterized by a crystalline phase.2. The product as recited in claim 1 , wherein gold in the ligaments is resistant to sintering at temperatures up to about 600 C.3. The product as recited in claim 1 , wherein the ligaments are characterized by an average diameter in a range from about 25 nm to about 75 nm.4. The product as recited in claim 1 , wherein the ligaments define a plurality of nanopores having an average diameter in a range from about 10 nm to about 50 nm.5. The product as recited in claim 4 , wherein the nanopores are homogenously distributed throughout the nanoporous gold structure claim 4 , wherein the oxide particles are distributed throughout available nanopores of the nanoporous gold structure.6. The product as recited in claim 1 , wherein the oxide particles include a metal oxide selected from a group consisting of: a titanium oxide claim 1 , a cerium oxide claim 1 , a praseodymium oxide claim 1 , and precursors thereof.7. The product as recited in claim 1 , wherein at least 95 vol % of the oxide particles are characterized by the crystalline phase.8. The product as recited in claim 1 , wherein the oxide particles comprise one or more metal oxides selected from a group consisting of: a titanium oxide characterized by a predominantly anatase crystalline phase; a cerium oxide characterized by a predominantly fluoride crystalline phase having oxygen vacancies; a praseodymium oxide characterized by a predominantly fluoride crystalline phase having oxygen vacancies; and an iron oxide characterized by a ...

ALUMINA SUPPORTER MATERIAL AND PREPARATION METHOD THEREOF, HYDROGENATION CATALYST AND RESIDUAL OIL HYDROGENATION PROCESSING

The supporter material for catalyst includes a main body alumina and a rod-shaped alumina. The main body alumina is provided with micron-sized pore channels, at least part of the rod-shaped alumina is distributed on the exterior surface of the main body alumina and/or in the micron-sized pore channels with a pore diameter D within a range of 3-10 μm; the rod-shaped alumina has a length of 1-12 μm and a diameter of 80-300 nm. The alumina supporter material is used as a residual oil hydrogenation catalyst supporter to facilitate a long period operation of the residual oil hydrogenation, and has high demetalization rate, desulfurization rate and denitrification rate. 1. An alumina supporter material , wherein comprising a main body alumina and a rod-shaped alumina; the main body alumina is provided with micron-sized pore channels , at least part of the rod-shaped alumina is distributed on the exterior surface of the main body alumina and/or in the micron-sized pore channels with a pore diameter D within a range of 3-10 μm; the rod-shaped alumina has a length of 1-12 μm and a diameter of 80-300 nm.2. The supporter material of claim 1 , wherein the length of the rod-shaped alumina distributed in the micron-sized pore channel is mainly 0.3 D-0.9 D; the length of the rod-shaped alumina distributed on the exterior surface of the main body alumina is primarily 3-8 μm.3. The supporter material of claim 1 , wherein the supporter material has a specific surface area of 140-350 m2/g claim 1 , a pore volume of 0.6-1.5 mL/g claim 1 , and a crush strength of 9-22 N/mm.4. The supporter material of claim 1 , wherein the pore distribution of the supporter material is as follows: the sum of the pore volumes of pores with a pore diameter below 10 nm accounts for less than 15% of the total pore volume claim 1 , the sum of the pore volumes of pores with a pore diameter more than 10 nm and less than 35 nm accounts for 30%-75% of the total pore volume claim 1 , the sum of the pore volumes ...

HONEYCOMB FILTER AND PRODUCTION METHOD THEREFOR, AND ALUMINIUM TITANATE-BASED CERAMIC AND PRODUCTION METHOD THEREFOR

A honeycomb filter comprising a partition wall forming a plurality of flow channels, and a catalyst supported on at least a portion of the surfaces of the partition wall and/or on at least a portion of the pore interiors of the partition wall, wherein the honeycomb filter has a first end face and a second end face, the plurality of flow channels comprising a plurality of first flow channels having their ends closed on the second end face side and a plurality of second flow channels having their ends closed on the first end face side, and when the elemental composition ratio of the partition wall is represented by the following compositional formula (I): 2. The honeycomb filter according to claim 1 , which does not exhibit a peak for crystalline SiOin the X-ray powder diffraction spectrum for the partition wall.3. The honeycomb filter according to claim 1 , wherein the catalyst includes zeolite.5. The production method according to claim 4 , wherein the silicon source includes SiOat 95 mass % or greater.6. The production method according to claim 4 , wherein the silicon source includes an amorphous phase at 90 mass % or greater.78-. (canceled)9. The production method according to claim 4 , wherein the catalyst includes zeolite.1016-. (canceled)17. The production method according to claim 4 , wherein the total amount of NaO and KO in the aluminum source being between 0.001 mass % and 0.20 mass % inclusive claim 4 , the total amount of NaO and KO in the magnesium source being between 0.001 mass % and 0.20 mass % inclusive claim 4 , the total amount of NaO and KO in the titanium source being between 0.001 mass % and 0.20 mass % inclusive and the total amount of NaO and KO in the silicon source being between 0.001 mass % and 0.20 mass % inclusive. The present invention relates to a honeycomb filter and to a method for its production, as well as to an aluminum titanate-based ceramic and a method for its production.Honeycomb filters are used to remove a material to be ...

Preparation Method of a Non-Woven Fibrous Material-Based Honeycomb Catalyst

Method for the preparation of a honeycomb catalyst including the steps of pre-coating a non-woven fibrous sheet, corrugating the fibrous sheet and rolling-up or stacking-up the corrugated sheet to form a honeycomb body. The honeycomb body is subsequently washcoated, including the addition of at least one catalytically active compound.

Article of Manufacture For Securing a Catalyst Substrate

An aftertreatment component for use in an exhaust aftertreatment system. The aftertreatment component comprises an aftertreatment substrate and a compressible material. The compressible material may be formed from a plastic thermoset, a rubberized material, or a metal foil which permits for the selective expansion of the substrate within the compressible material, while also reducing cost and manufacturing complexity. In various embodiments, the aftertreatment substrate and the compressible materials may be formed separately and coupled to each other, or they may be formed concurrently via coextrusion. 1. An aftertreatment component for an exhaust gas aftertreatment system , the aftertreatment component comprising:a shell;a ceramic substrate at least partially positioned within the shell; anda cylindrical sleeve comprising corrugations, the cylindrical sleeve positioned between the shell and the ceramic substrate such that the corrugations contact the shell and the ceramic substrate;wherein the corrugations comprise at least one of a thermoset material, a rubberized material, a plastic material, a thermoplastic material, a polymeric material, a silicone material, an elastomeric material, or a foam material.2. The aftertreatment component of claim 1 , wherein the corrugations are coupled to the ceramic substrate.3. The aftertreatment component of claim 1 , further comprising a catalyst layer applied to the ceramic substrate and the corrugations.4. The aftertreatment component of claim 1 , wherein:the corrugations maintain the ceramic substrate within the shell;the corrugations facilitate thermal expansion of the ceramic substrate within the shell; andthe corrugations facilitate thermal contraction of the ceramic substrate within the shell.5. The aftertreatment component of claim 1 , wherein the cylindrical sleeve has a melting point that is greater than 700° C.6. The aftertreatment component of claim 1 , wherein the cylindrical sleeve surrounds the ceramic substrate. ...

HYDROGENATION OR HYDROGENOLYSIS PROCESS

A catalytic process for the hydrogenation or hydrogenolysis of a reactant in a reactor in the presence of hydrogen and liquid water is disclosed. The catalyst is stable under hydrothermal conditions. 1. A process for the hydrogenation or hydrogenolysis of a reactant in a reactor in the presence of a catalyst , hydrogen and liquid water , wherein the catalyst comprises at least one metal chosen from Groups 8 to 11 of the periodic table on a metal oxide support , and wherein the catalyst has been prepared by a process comprising steps of:(a) heating the metal oxide support in liquid water to a temperature of at least 150° C. for a period of at least 2 hours to provide a treated support; and(b) depositing at least one metal chosen from Groups 8 to 11 of the periodic table on the treated support.2. The process according to claim 1 , wherein the metal oxide support is titania claim 1 , optionally doped with up to 50 wt % of another element; the metal oxide support is zirconia claim 1 , optionally doped with up to 50 wt % of another element; or the metal oxide support is a mixed metal oxide comprising at least 10 wt % titania and at least 10 wt % zirconia.3. The process according to claim 1 , wherein the at least one metal chosen from Groups 8 to 11 of the periodic table is chosen from the group consisting of iron claim 1 , cobalt claim 1 , nickel claim 1 , copper claim 1 , ruthenium claim 1 , rhodium claim 1 , palladium claim 1 , iridium and platinum.4. The process according to claim 1 , wherein the reactant is an oxygenate.5. The process according to claim 4 , wherein the oxygenate is present in or derived from a saccharide-containing feedstock claim 4 , and the process produces glycols.6. The process according to claim 1 , wherein the temperature in the reactor is at least 190° C. and at most 250° C.7. The process according to claim 1 , wherein a second catalyst is present in the reactor and the second catalyst comprises one or more homogeneous catalysts selected from ...

FILTER FOR FILTERING PARTICULATE MATTER FROM EXHAUST GAS EMITTED FROM A COMPRESSION IGNITION ENGINE

A filter for filtering particulate matter (PM) from exhaust gas emitted from a compression ignition engine, which filter comprising a porous substrate having inlet surfaces and outlet surfaces, wherein the inlet surfaces are separated from the outlet surfaces by a porous structure containing pores of a first mean pore size, wherein the porous substrate is coated with a wash coat comprising a plurality of solid particles comprising a molecular sieve promoted with at least one metal wherein the porous structure of the wash coated porous substrate contains pores of a second mean pore size, and wherein the second mean pore size is less than the first mean pore size. 1. A filter for filtering particulate matter (PM) from an exhaust gas , the filter comprising:a. a wall flow filter having inlet and outlet surfaces and a porous substrate between the inlet and outlet surfaces, wherein the porous substrate has pores of a first mean pore size,b. a first washcoat coated on the inlet and/or outlet surface of the porous wall flow substrate and within the wall flow substrate, wherein the first washcoat has a second mean pore size that is less than the first mean pore size,wherein the filter further comprises a layer of a second washcoat, wherein the first washcoat and second washcoat layer have different formulations and wherein substantially none of the second washcoat enters the wall flow substrate, andwherein at least one of the first and second washcoats comprise a metal selected from Cu, Fe, Ce, Pt, Pd, or Rh.2. The filter of claim 1 , wherein the second washcoat layer is coated on the outlet surface of the wall flow filter.3. The filter of claim 1 , wherein the second washcoat layer is coated on the outlet surface of the wall flow filter.4. The filter of claim 1 , wherein either one or both of the inlet and outlet surfaces of the wall flow filter comprise a plurality of washcoat layers comprising the first washcoat layer and the second washcoat layer.5. The filter of claim ...

TITANIUM CARBIDE NANOSHEET/LAYERED INDIUM SULFIDE HETEROJUNCTION AND APPLICATION THEREOF IN DEGRADING AND REMOVING WATER POLLUTANTS

The invention provides a titanium carbide nanosheet/layered indium sulfide heterojunction and an application of the same in degrading and removing water pollutants. A simple electrostatic self-assembly method is used to uniformly absorb indium ions on the surfaces of TiCnanosheets, which effectively inhibits the stacking of the nanosheets and is beneficial to the uniform growth of InSnanosheets on the surfaces of the TiC. The present invent overcomes two disadvantages of too fast photogenerated carrier recombination rate of InSand easy agglomeration of nano-scale InS, and effectively improves the separation efficiency and photocatalytic activity of photogenerated electron-hole of InS. 1. A method of preparing a titanium carbide nanosheet/layered indium sulfide heterojunction , comprising the following steps:{'sub': 3', '2, '(1) using a mixture of LiF and hydrochloric acid to etch TiAlCto prepare two-dimensional transition metal carbide nanosheets;'}(2) mixing a solution of the two-dimensional transition metal carbide nanosheets with an indium salt solution to form a nanosheet aggregate solution;(3) adding thioacetamide to the nanosheet aggregate solution and reacting under reflux in an inert atmosphere to prepare the titanium carbide nanosheet/layered indium sulfide heterojunction.2. The method according to claim 1 , wherein in the step (1) claim 1 , the molar ratio of TiAlCand LiF is (7 to 15): 1; the concentration of hydrochloric acid is 6 to 9 mol/L; the etching temperature is 20 to 35° C. claim 1 , and the etching time is 24 to 48 h.3. The method according to claim 2 , wherein the molar ratio of TiAlCand LiF is 12:1; the concentration of hydrochloric acid is 9 mol/L; the etching temperature is 25° C. claim 2 , and the etching time is 24 h.4. The method according to claim 1 , wherein in the step (2) claim 1 , the mass of the two-dimensional transition metal carbide nanosheet is 1 to 3% of the mass of the indium salt; the indium salt is InCl.4HO.5. The method ...

LANTHANIDE-SUPPORTED TRANSITION METAL CATALYSTS AND USES THEREOF

The present invention provides lanthanide-supported transition metal catalysts synthesized using high-nitrogen energetic precursors; processes for the preparation of said catalysts and for coating inert ceramic monoliths with said catalysts; and uses thereof, e.g., in reforming of methane. 1. A catalyst comprising discrete particles comprising a lanthanum-containing support material and nanoparticles of a transition metal excluding lanthanides and actinides or an oxide thereof , wherein said support material comprises lanthanum oxycarbonate in the form of LaOCOand LaO(CO) , and said nanoparticles are impregnated within or attached to said support material.2. The catalyst of claim 1 , wherein:(a) said nanoparticles are relatively uniformly distributed on said support material; or(b) said catalyst does not comprise molecular carbon including fullerenes, single-walled carbon nanotubes, multi-walled carbon nanotubes, graphene, vitreous carbon, graphite, and amorphous carbon; or(c) said nanoparticles comprise both said transition metal and said oxide thereof; or(d) said transition metal is titanium, vanadium, manganese, iron, cobalt, nickel, copper, zinc, molybdenum, ruthenium, rhodium, palladium, tungsten, rhenium, osmium, iridium, or platinum.35-. (canceled)6. The catalyst of claim 2 , wherein said transition metal is nickel or iron.7. The catalyst of claim 1 , wherein said transition metal is nickel; and (a) the overall amount of said LaOCO claim 1 , LaO(CO) claim 1 , LaOand LaOCl is about 45-60% claim 1 , preferably about 50-55% claim 1 , by weight claim 1 , of said catalyst; (b) the amount of said Ni is about 35-50% claim 1 , preferably about 40-45% claim 1 , by weight claim 1 , of said catalyst; or (c) the amount of said NiO claim 1 , when present claim 1 , is about 5-15% claim 1 , preferably about 8-12% claim 1 , by weight claim 1 , of said catalyst.8. The catalyst of claim 7 , wherein the overall amount of said LaOCO claim 7 , LaO(CO) claim 7 , LaOand LaOCl is ...

Methods of preparing a catalyst with low hrvoc emissions

A method of preparing a catalyst comprising a) drying a chrominated-silica support followed by contacting with a titanium(IV) alkoxide to form a metalized support, b) drying a metalized support followed by contacting with an aqueous alkaline solution comprising from about 3 wt. % to about 20 wt. % of a nitrogen-containing compound to form a hydrolyzed metalized support, and c) drying the hydrolyzed metalized support followed by calcination at a temperature in a range of from about 400 °C to about 1000 °C and maintaining the temperature in the range of from about 400 °C to about 1000 °C for a time period of from about 1 minute to about 24 hours to form the catalyst.