КОМПОЗИЦИЯ КАТАЛИЗАТОРА, СОДЕРЖАЩЕГО СЕРЕБРО, СПОСОБ ПОЛУЧЕНИЯ КАТАЛИТИЧЕСКОЙ КОМПОЗИЦИИ И ИСПОЛЬЗОВАНИЕ КАТАЛИТИЧЕСКОЙ КОМПОЗИЦИИ ДЛЯ ЭПОКСИДИРОВАНИЯ ЭТИЛЕНА

Настоящее изобретение относится к каталитической композиции, пригодной для использования при эпоксидировании этилена, способу ее получения и способу эпоксидирования этилена в присутствии этой каталитической композиции. Описана каталитическая композиция, включающая носитель, имеющий поверхность, по меньшей мере 500 м2/кг, и осаждение на носителе: - металлическое серебро, - металл или компонент, содержащий рений, вольфрам, молибден или соединение, образующее нитрат или нитрит, и - металла IA группы или компонент, содержащий металл IA группы, имеющий атомный номер, по меньшей мере, 37, и дополнительно калий, причем величина выражения (QK/R)+QHIA лежит в интервале значений от 1,5 до 30 ммоль/кг, где QHIA и QK означают количество в ммоль/кг металла IA группы, имеющего атомный номер, по меньшей мере, 37, и калия, соответственно, содержащихся в каталитической композиции, отношение QHIA к QK составляет, по меньшей мере, 1:1, величина QK составляет, по меньшей мере, 0,01 ммоль/кг, R означает безразмерную ...

VERFAHREN ZUR HERSTELLUNG VON PHTHALSAEUREANHYDRID UNTER VERWENDUNG AMPHORAFOERMIGER KATALYSATOREN

Verfahren zur katalytischen Gasphasenoxydation von Toluol mit Sauerstoff oder Ozon zu Benzaldehyd und Benzoesaeure

PROCESS FOR CONVERTING AN OLEFIN TO A PRODUCT CONTAINING HIGHER AND LOWER OLEFINS

... 1386735 Disproportionating C 14 -C 28 olefins GULF RESEARCH & DEVELOPMENT CO 12 Feb 1973 [17 Feb 1972] 6717/73 Heading C5E A mono-olefin having 14 to 28 carbon atoms is disproportionated to give a mixture of olefins of higher and lower carbon number by contact with a catalyst comprising (i) Al 2 O 3 , (ii) Mo or Re and (iii) Ag or Cu at 25-250‹ C. The feed is preferably an -olefin. The Mo or Re may be present in amount 4-12 wt. per cent and the Cu or Ag to amount 0À1-6 wt. per cent based on the total catalyst.

CATALYTIC OXIDATION PROCESS

... 1508868 Preparation of acetic acid NATIONAL DISTILLERS & CHEMICAL CORP 1 July 1975 [1 July 1974] 27746/75 Heading C2C [Also in Division B1] Acetic acid is produced by the reaction of ethylene and oxygen in the presence of water and a catalyst comprising palladium metal and a sulphur-containing catalyst modifier havng 2 to 4 oxygen atoms per sulphur atom. The oxidation may be carried out in the liquid phase at 60-250‹ C. and 1-100 atmos. pressure or in the vapour phase 100-250‹ C. at a pressure of above atmospheric to 20 atmos., in both cases using a feed comprising 5-20 mole per cent oxygen and 0À2-100 moles of water per mole oxygen.

CATALYST FOR PRODUCTION OLEFINISCH UNGE SAETTIGTER OF ALIPHATIC CARBONIC ACIDS

SILVER CATALYST AND PROCEDURE FOR ITS PRODUCTION.

A method for improving the selectivity of a catalyst and a process for the epoxidation of an olefin

PROCESS FOR HYDROCRACKING HEAVY HYDROCARBON OILS AND CATALYST THEREFOR

PROCESS FOR PRODUCING UNSATURATED ALIPHATIC ACIDS AND CATALYSTS THEREFOR

The present invention relates to a catalyst composition consisting of oxide complexes of vanadium, molybdenum and germanium plus an additional oxide selected from the group consisting of iron, nickel, thallium, phosphorus, indium, bismuth and the rare earths and optionally an oxide selected from the group copper, magnesium, manganese, aluminum, titanium, potassium, rubidium, cesium, niobium, tantalum, chromium, tungsten, uranium, cobalt, silver, zinc, tin, gallium, arsenic and antimony. These catalysts are especially useful for producing acrylic acid from acrolein and for producing methacrylic acid from methacrolein.

PROCESS FOR PREPARING A SILVER-ON-CARRIER CATALYST

... 73730-3 The invention relates to a process for preparing a silver catalyst on an inert carrier material, which process comprises reductively precipitating metallic silver, from a solution containing silver ions, onto the inert carrier. The reduction is effected by means of a reducing agent which is an oxidizable metal or metal compound present on the surface of the inert carrier material. The process ensures a uniform deposition of the silver over the carrier surface and an excellent adherence of the silver to the carrier surface.

SILVER CATALYSTS

SUPPORTED PALLADIUM-GOLD CATALYSTS AND PREPARATION OF VINYL ACETATE THEREWITH

Disclosed is a catalyst. The catalyst comprises palladium, gold, and a support comprising titanium dioxide and tungsten trioxide. The support preferably comprises from 75 wt% to 99 wt% of titanium dioxide and from 1 wt% to 25 wt% of tungsten trioxide. A method for preparing the catalyst is also disclosed. The method comprises impregnating the support with a palladium compound and a gold compound, calcining the impregnated support, and then reducing the calcined support. Further disclosed is a method for preparing vinyl acetate with the catalyst. The catalyst exhibits improved catalytic activity and selectivity.

ALKYLENE OXIDE CATALYSTS HAVING ENHANCED ACTIVITY AND/OR STABILITY

Verfahren zur Herstellung von Tetrafluoräthylenoxyd

Verfahren zu der katalytischen Gasphasenoxydation von Toluol mit Sauerstoff oder Ozon zu Benzaldehyd

Verfahren zur Herstellung von wasserstoffhaltigem Spaltgas

Process for the preparation of a catalyst for the oxidation of propylene and acrolein, and its use for the preparation of acrylic acid and acrolein

Catalyst for the oxidation of propylene and acrolein. The catalyst is prepared by precipitation from soluble salts of silver and molybdenum in quantities such as to obtain a molar silver oxide/molybdenum oxide ratio of 0.1 to 2.0, in the precipitate after drying and activation in air at 300 DEG -600 DEG C. Use in the production of acrylic acid and acrolein by vapour-phase oxidation of acrolein and/or propylene.

Catalyst composition and use thereof

CATALYST AND METHOD OF ITS PRODUCTION

CATALYST AND METHOD FOR ITS PRODUCTION

КАТАЛІЗАТОР ОКИСЛЕННЯ ЕТАНУ І/АБО ЕТИЛЕНУ ДО ОЦТОВОЇ КИСЛОТИ ТА СПОСІБ ОДЕРЖАННЯ ОЦТОВОЇ КИСЛОТИ

Заявляється каталітична композиція і її застосування для селективного окислення етану до оцтової кислоти і/або для селективного окислення етилену до оцтової кислоти, причому ця композиція в сполученні з киснем включає елементи молібден, ванадій, ніобій, золото за відсутності паладію відповідно до емпіричної формули: MoaWbAucVd NbeZf, у якій Z означає один або декілька елементів, вибраних із групи, яка включає В, Аl, Ga, In, Ge, Sn, Pb, Sb, Cu, Pt, Ag, Fe і Re; a, b, c, d, е і f означають такі грам-атомні співвідношення елементів, при яких 0 Подробнее

OXIDATION CATALYST AND METHOD OF ITS USE

CATALYST AND METHOD FOR ITS PRODUCTION

Catalyst of oxidation to vanadium and titanium

PROCEEDED FOR the HYDROCRAQUAGE Of HEAVY HYDROCARBON OILS AND CATALYST USES For this purpose

Catalyst for oxidn. of xylene to phthalic anhydride - giving good yields and readily controlled reaction

NANOCOMPOSITE RESPONSIVE TO VISIBLE LIGHT AND GREEN AND RED TIDE REMOVER COMPRISING SAME

The present invention relates to a N-TiO_2/Ag-PbMoO_4 nanocomposite responsive to visible light, and a green and red tide remover comprising the same. More particularly, the N-TiO_2/Ag-PbMoO_4 nanocomposite improves an energy absorption wavelength range to absorb visible light. The green and red tide remover comprising the N-TiO_2/Ag-PbMoO_4 nanocomposite has high efficiency. COPYRIGHT KIPO 2016 (AA) Not using an optical catalyst (BB) Cell survival % (CC) Irradiation time / minute ...

PROCESS OF OXAZOL PRODUCTION

GAS-PHASE PROCESS AND CATALYST FOR THE PREPARATION OF PROPYLENE OXIDE

Gas-phase process for the preparation of propylene oxide comprising contacting propylene with oxygen and hydrogen in the presence of a catalyst comprising a bimetallic compound supported on a titanium containing support, the bimetallic compound comprising gold and a metal M selected from the group consisting of platinum, tin, and rhodium. The invention also provides for the catalyst.

Catalysts for producing unsaturated aliphatic acids

The present invention relates to a process for the production of unsaturated aliphatic acids and the catalyst therefor, by the vapor phase oxidation of the corresponding unsaturated aliphatic aldehydes with molecular oxygen, optionally in the presence of steam, in the presence of an oxidation catalyst consisting of the oxides of the elements molybdenum, vanadium, tungsten and lanthanum, and optionally one or more of the oxides of the elements manganese, iron, copper, aluminum, cobalt, nickel, phosphorus, zinc, bismuth, silver, cadmium, niobium, arsenic, chromium, the alkali and the alkaline earth elements.

PRODUCTION OF 2*22 DISUBSTITUTED PROPIOLACTONE

МОДИФИЦИРОВАННЫЕ МАТЕРИАЛЫ НОСИТЕЛЕЙ ДЛЯ КАТАЛИЗАТОРОВ

Изобретение относится к способу получения винилацетата, включающему введение исходного сырья, содержащего этилен, уксусную кислоту и кислородсодержащий газ, в контакт с палладий- и золотосодержащим катализатором, полученными на подвергнутом прокаливанию и модифицированном материале носителя, с образованием винилацетата и по меньшей мере одного побочного продукта, где материал носителя модифицируют 1) ниобием, магнием, танталом, иттрием, лантаном, празеодимом или их комбинациями; или 2) титаном, цирконием или их комбинациями, где материал носителя выбирают из диоксида циркония, титаносиликата или цирконосиликата и где модифицированный материал носителя прокаливают перед введением каталитических компонентов. Изобретение также относится к способу получения катализатора, подходящего для получения винилацетата, а также к каталитической композиции для катализа получения алкенилалканоатов, включающей материал носителя с по меньшей мере одним модификатором, палладием и золотом, которые взаимодействуют ...

КАТАЛИЗАТОР ОКИСЛЕНИЯ И ЕГО ПРИГОТОВЛЕНИЕ

Изобретение относится к катализатору окисления этана и/или этилена до уксусной кислоты и к способу приготовления упомянутого катализатора. Описан способ приготовления нанесенной на носитель каталитической композиции, приемлемой для окисления этана и/или этилена до уксусной кислоты, в котором нанесенная на носитель каталитическая композиция включает катализатор, включающий один или несколько металлических компонентов, на носителе, включающем альфа-оксид алюминия, и этот способ включает следующие стадии: (а) приготовление суспензии одного или нескольких металлических компонентов и частиц носителя из альфа-оксида алюминия или предшественника носителя из альфа-оксида алюминия, (б) распылительная сушка суспензии и необязательно (в) кальцинирование высушенной распылением суспензии с получением нанесенной на носитель каталитической композиции. Описаны также нанесенная на носитель каталитическая композиция, приготовленная по указанному способу, и способ селективного окисления этана и/или этилена ...

СПОСОБ ОКИСЛЕНИЯ АРОМАТИЧЕСКИХ СОЕДИНЕНИЙ И КАТАЛИЗАТОР, ИСПОЛЬЗУЕМЫЙ В ЭТОМ СПОСОБЕ

... 1. Каталитическая композиция, активная в конверсии замещенных ароматических углеводородов со способными окисляться заместителями при контакте с кислородом в жидкой реакционной смеси, практически не содержащей брома, в окисленный ароматический продукт, содержащий ароматическую карбоновую кислоту, включающая в себя палладий, по меньшей мере один металл или металлоид 15 группы, выбранный из сурьмы, висмута или их комбинации, и по меньшей мере один металл или металлоид 4, 5, 6 или 14 групп. !2. Каталитическая композиция по п.1, содержащая по меньшей мере один металл 5 группы. ! 3. Каталитическая композиция по п.1, содержащая по меньшей мере один металл 6 группы. ! 4. Каталитическая композиция по п.1, содержащая сурьму. ! 5. Каталитическая композиция по п.4, содержащая по меньшей мере один элемент, выбранный из титана, ванадия, хрома, молибдена и олова. ! 6. Каталитическая композиция по п.4, содержащая ванадий. ! 7. Каталитическая композиция по п.4, содержащая молибден. ! 8. Каталитическая композиция ...

СПОСОБ ПРИГОТОВЛЕНИЯ ФОРМОВАННОГО КАТАЛИЗАТОРА, КАТАЛИЗАТОР И ПРИМЕНЕНИЕ ТАКОГО КАТАЛИЗАТОРА

... 1. Способ приготовления формованного катализатора, который включает формование пасты в формованные частицы и сушку, по меньшей мере, части формованных частиц при температуре ниже 1000°С, где паста содержит материал носителя или его предшественник, серебряный компонент и дополнительный элемент или его соединение, который действует как промотор, когда данный формованный катализатор используется в качестве катализатора эпоксидирования. 2. Способ по п.1, в котором сушку, по меньшей мере, части формованных частиц осуществляют при температуре в диапазоне от 250 до 550°С, в частности от 300 до 500°С. 3. Способ по п.1, в котором паста дополнительно содержит более чем 1 мас.% в отношении к массе материала носителя или его предшественника, карбоновой кислоты, имеющей в своей молекулярной структуре, по меньшей мере, 2 атома углерода. 4. Способ по п.3, в котором карбоновая кислота, имеющая, по меньшей мере, 2 атома углерода, содержит в своей молекулярной структуре множество карбоксильных групп или, ...

КАТАЛИЗАТОР ОКИСЛЕНИЯ И ЕГО ПРИГОТОВЛЕНИЕ

... 1. Способ приготовления нанесенной на носитель каталитической композиции, приемлемой для окисления этана до этилена и/или уксусной кислоты и/или окисления этилена до уксусной кислоты, причем упомянутая нанесенная на носитель каталитическая композиция включает катализатор, включающий один или несколько металлических компонентов, нанесенных на носитель, включающий альфа-оксид алюминия, и этот способ включает следующие стадии: а) приготовление суспензии одного или нескольких металлических компонентов и частиц носителя из альфа-оксида алюминия или предшественника носителя из альфа-оксида алюминия и (б) распылительная сушка суспензии. 2. Способ по п.1, который далее включает: (в) кальцинирование высушенной распылением суспензии. 3. Способ по п.1 или 2, в котором альфа-оксид алюминия, используемый для приготовления носителя, обладает удельной площадью поверхности, как это определяют по БЭТ, меньше 15 м2/г, в частности меньше 10 м2/г, например меньше 5 м2/г. 4. Способ по п.1 или 2, в котором альфа-оксид ...

КАТАЛИЗАТОР НА ОСНОВЕ СМЕШАННЫХ ОКСИДОВ МЕТАЛЛОВ

... 1. Каталитическая композиция для окисления этана и/или этилена до уксусной кислоты, которая включает в сочетании с кислородом элементы молибден, ванадий, ниобий и золото в отсутствии палладия в соответствии с эмпирической формулой MoaWbAucVdNbeYf (I), в которой Y обозначает один или несколько элементов, выбранных из группы, включающей Cr, Mn, Та, Ti, В, Al, Ga, In, Pt, Zn, Cd, Bi, Ce, Co, Rh, Ir, Cu, Ag, Fe, Ru, Os, K, Rb, Cs, Mg, Ca, Sr, Ba, Zr, Hf, Ni, P, Pb, Sb, Si, Sn, T1, U, Re, Те и La, a a, b, c, d, e и f обозначают такие грамм-атомные соотношения элементов, при которых 0<а≤1;0≤b<1 и а+b=1; 10-50,01, 0,0001<с≤0,002, 0,425≤d≤0,8, 0,14≤ e≤0,20, 0,6≤d+e≤0,95 и f≤0,2. 4. Каталитическая композиция по п.3, в которой 0,0005<с≤0,001, 0,45≤d≤0,7, ...

МОДИФИЦИРОВАННЫЕ МАТЕРИАЛЫ НОСИТЕЛЕЙ ДЛЯ КАТАЛИЗАТОРОВ

... 1. Способ получения алкенилалканоатов, включающий:введение исходного сырья, содержащего этилен, уксусную кислоту и кислородсодержащий газ, в контакт с катализатором или прокатализатором, полученным на материале носителя, с образованием винилацетата, где перед добавлением палладийсодержащего и золотосодержащего каталитических компонентов материал носителя модифицируют в результате добавления раствора предшественника модификатора к материалу носителя, где материал носителя выбирают из диоксида циркония, титаносиликата или цирконосиликата.2. Способ по п.1, где перед добавлением каталитических компонентов модифицированный материал носителя подвергают прокаливанию.3. Способ по п.1 или 2, где соотношение этилацетата и винилацетата составляет величину, меньшую приблизительно 800 ч./млн.4. Способ по п.1 или 2, где соотношение этилацетата и полученного алкенилалканоата составляет величину, меньшую приблизительно 250 ч./млн.5. Способ по п.1 или 2, где катализатор или прокатализатор содержит калиевый ...

Multimetalloxidmasskatalysator und seine Verwendung für Oxidationsreaktionen

Catalyst and method for its preparation

Oxidation catalyst containing vanadium and titanium

... 1,140,264. Oxidation of hydrocarbons. BADISCHE ANILIN- & SODA-FABBIK A.G. 17 May, 1966 [18 May, 1965], No. 21781/66. Heading C2C. [Also in Division B1] Aromatic hydrocarbons may be oxidized to carboxylic acids, for example o-xylene may be oxidized to phthalic anhydride+maleic anhydride, using a catalyst consisting of an inert porous carrier coated with a 0À02 to 2 mm. thick layer of a composition containing 1% to 15% by weight of vanadium pentoxide and 85% to 99% by weight of titanium dioxide, the catalyst containing from 0À05% to 3% by weight of vanadium pentoxide. In the examples, vapour phase o-xylene and air are passed over the catalyst in a tube heated by a salt-bath, the reaction temperature being: (1), (4), and (5) 400‹ C.; (2) and (7) 390‹ C.; (3) 380‹ C.; (6) 410‹ C. Also mentioned are oxidation of propylene to acetic acid; butene-(1 butene-(2) or butadiene-(1,3) to maleic acid; benzene to maleic acid; naphthalene to phthalic acid; toluene to benzoic acid; methyl naphthalenes to ...

MULTI-METALLIC OXIDE MEASURE CATALYST AND ITS USE FOR OXIDATION REACTIONS

Procedure for the production of Benzaldehyd and benzoic acid

MIXTURE OXIDE CATALYST AND PROCEDURE FOR THE PRODUCTION OF ACETIC ACID

Process for the preparation of novel diazepinoindoles

Catalyst for vinyl acetate manufacture

PREPARATION OS OXOLE COMPOUNDS, E.G. FURAN

PROCESS FOR HYDROCRACKING HEAVY HYDROCARBON OILS AND CATALYST THEREFOR

A catalyst for hydrocracking heavy hydrocarbon oils includes a porous inorganic carrier composed mainly of alumina or titania, and two or more catalytic metal components composited with the carrier. The metals of the catalytic metal components is either (a) Y and at least one element selected from Zn, Fe, Co, Ni, Cu, Ag, Sn and Pb or (b) Mo and at least one element selected from Zn, Cu, Ag, Sn, Pb and the lanthanum-series elements. The catalyst has at least 60 % of its total pore volume in pores with a diameter of 200.ANG. or more, at least 40 % of its totalpore volume in pores with a diameter of 300.ANG. or more and not more than 20 % of its total pore volume in pores with a diameter of at least 1000.ANG.. Disclosed also is a process for hydrocracking a heavy hydrocarbon oil in the presence of the above catalyst.

ALKYLENE OXIDE PRODUCTION AND CATALYSTS THEREFOR

A catalyst is provided for the oxidation of alkylene to alkylene oxide which catalyst comprises silver in the form of very small particles on a porous support structure together with a promoting amount of, especially, an alkali metal or alkali earth metal. The catalyst has been shown to provide particularly effective conversion rates with lower loss of alkylene to oxides of carbon and to water than presently used catalyst systems.

PROCESS FOR PREPARING A SILVER CATALYST

K 703 PROCESS FOR PREPARING A SILVER CATALYST The invention relates to a process for preparing a silver catalyst suitable for use in the oxidation of ethylene to ethylene oxide characterized in that an alkali metal enriched alumina carrier, which has been calcined, is impregnated with a solution of a silver compound, sufficient to cause precipitation on the carrier of from 1 to 25 percent by weight, on the total catalyst, of silver, and before, during or after that impregnation also with one or more dissolved potassium, rubidium or cesium compounds as promoter and with a rhenium compound, and after precipitation the silver compound on the impregnated carrier is reduced to metallic silver. EJRH04 ...

PROCESS FOR THE PRODUCTION OF PROPYLENE OXIDE

CATALYST CARRIER

CATALYST AND METHOD FOR ITS PREPARATION

CATALYST AND METHOD FOR ITS PREPARATION

Method of preparation of hydrogen or mixtures of gas containing of hydrogen

PROCEDE DE PREPARATION D'ACIDES ALIPHATIQUES INSATURES ET CATALYSEURS CORRESPONDANTS

Procédé de préparation d'acides aliphatiques insaturés. Dans la préparation d'acides carboxyliques oléfiniquement insaturés à partir des aldéhydes insaturés correspondants, on peut utiliser selon l'invention le catalyseur suivant : ...

PROCEEDED FOR the HYDROCRAQUAGE Of HEAVY HYDROCARBON OILS AND CATALYST USES For this purpose

METHOD OF PREPARATION Of UNSATURATED ALIPHATIC ACIDS AND CATALYSTS CORRESPONDING

PROPYLENE OXIDE

OXIDATION CATALYST AND PROCESS UTILISING THE CATALYST

catalisador, método para a fabricação de um catalisador, processo químico, e, processo para a hidratação de um alquino

A process for the preparation of hydrogen or hydrogen-containing gas mixtures

Promoted silver catalyst for producing alkylene oxides

Alkylene oxides are produced by oxidizing olefines with oxygen in the presence of promoted silver containing catalysts.

Olefin oxidation process

Oxole compounds, e.g. furan, are produced by contacting alkenes and/or alkadienes with molecular oxygen in the presence of an antimony catalyst.

Platinum-group-metal free catalytic washcoats for particulate exhaust gas filter applications

The use of Platinum-group-metal free catalytic compositions comprising perovskite AgxLa1-xMnOy with x value of 0.02-0.9 as catalytically active washcoat for regenerable catalyzed diesel particulate filter applications, facilitating soot oxidation during the regeneration of Diesel particulate filters (DPF), replacing platinum-group-metal (PGM) formulations is described. The catalysts have been studied by a TGA method on soot oxidation activity. They proved particularly useful as part of an automotive aftertreatment system for elimination and/or minimizing of exhaust gas emissions, particularly for directly injected fuel engine vehicles. This was shown by testing full-size coated Diesel particulate filters. Among the formulations tested, the composition Ag-La-Mn perovskite was very active at temperatures above 300°C. The regeneration abilities were comparable or better than Pt formulations with Pt loading of 100g/ft3 (28.32 g Pt/m3). The balance point was achieved at 275-300°C with complete ...

КАТАЛИЗАТОР ГИДРОГЕНИЗАЦИИ И СПОСОБ КАТАЛИТИЧЕСКОЙ ГИДРОГЕНИЗАЦИИ НЕНАСЫЩЕННЫХ УГЛЕВОДОРОДНЫХ СОЕДИНЕНИЙ

Изобретение относится к катализатору и способу, пригодному для каталитической гидрогенизации ненасыщенного углеводородного соединения. Описан катализатор для гидрогенизации более ненасыщенного углевода, такого как, например, алкин или диолефин, в менее ненасыщенный углеводород, такой как, например, алкен или моноолефин, который содержит палладий, серебро и шпинель, причем каждый присутствует в достаточном количестве для воздействия на гидрогенизацию ненасыщенного углеводорода. Необязательно палладий присутствует в качестве оболочки, распределенной по поверхности шпинели. Описан способ применения такого катализатора. Технический результат: этот катализатор обладает более высокой селективностью и более долгим сроком службы. 2 с. и 6 з.п. ф-лы, 9 табл.

СПОСОБ ПРОИЗВОДСТВА АРОМАТИЧЕСКИХ КАРБОНОВЫХ КИСЛОТ В ВОДЕ

... 1. Способ получения по меньшей мере одной ароматической карбоновой кислоты, включающий контактирование жидкой реакционной смеси, содержащей ароматическое сырье и воду, с кислородом в присутствии не содержащей брома каталитической композиции металлов, которая активна при отсутствии брома в окислении ароматического сырья в окисленные ароматические производные по меньшей мере с 80% конверсией и по меньшей мере 80% селективностью образования ароматической карбоновой кислоты. ! 2. Способ по п.1, в котором ароматическое сырье выбирают из группы, состоящей из бензола с, по меньшей мере, одним способным окисляться алкильным заместителем, нафталина с, по меньшей мере, одним способным окисляться алкильным заместителем, и их смесей. ! 3. Способ по п.2, в котором ароматическое сырье выбирают из группы, состоящей из п-ксилола, м-ксилола, псевдокумола, о-ксилола, 2,6-диметилнафталина, 1,5-диметилнафталина, 2,7-диметилнафталина, и их смесей. ! 4. Способ по п.3, в котором ароматическое сырье представляет ...

КАТАЛИЗАТОР ОКИСЛЕНИЯ ЭТАНА И СПОСОБ, В КОТОРОМ ИСПОЛЬЗУЮТ ЭТОТ КАТАЛИЗАТОР

... 1. Каталитическая композиция для селективного окисления этана до уксусной кислоты и/или для селективного окисления этилена до уксусной кислоты, которая в сочетании с кислородом включает элементы молибден, ванадий, ниобий, золото в отсутствии палладия в соответствии с эмпирической формулой: ! ! в которой Z обозначает один или несколько элементов, выбранных из группы, включающей В, Al, Ga, In, Ge, Sn, Pb, Sb, Cu, Pt, Ag, Fe и Re; ! a, b, c, d, e и f обозначают такие грамм-атомные соотношения элементов, при которых ! 0<а≤1; 0≤b<1 и а+b=1; 10-5<с≤0,02; 0 Подробнее

CATALYST FOR AN OXIDATION OF ETHYLENE INTO ETHYLENEOXIDE

SILBERKATALYSATOR FUER DIE HERSTELLUNG VON ETHYLENOXID AUS ETHYLEN UND VERFAHREN ZU DESSEN HERSTELLUNG.

Umwandlung eines Präkatalysators in eine katalytisch aktive Silber-Vanadiumoxid-Bronze

Beschrieben wird ein Verfahren zur Umwandlung eines Präkatalysators, der einen inerten Träger, eine organische Kohlenstoffquelle und ein Silber und Vanadium enthaltenden Multimetalloxid umfasst, in einen Gasphasenoxidationskatalysator, der den inerten Träger und eine katalytisch aktive Silber-Vanadiumoxid-Bronze umfasst, bei dem man den Präkatalysator in einer Gasatmosphäre, die weniger als 10 Vol.-% Sauerstoff enthält, bei einer Temperatur von wenigstens 350 DEG C thermisch behandelt, wobei man vor der thermischen Behandlung die Menge der Kohlenstoffquelle im Präkatalysator auf einen Wert unterhalb einer kritischen Menge einstellt. Die Verringerung des Kohlenstoffgehalts erfolgt durch Abbrennen bei einer Temperatur von 80 bis 200 DEG C in einer sauerstoffhaltigen Atmosphäre unter Zersetzung eines Teils der Kohlenstoffquelle. Die erhaltenen Katalysatoren dienen der Gasphasenpartialoxidation von aromatischen Kohlenwasserstoffen zu Aldehyden, Carbonsäuren und/oder Carbonsäureanhydriden.

Improvements relating to the manufacture of organic hydroxylamine compounds

Hydrogenation catalysts used in the production of aliphatic and cycloaliphatic hydroxylamines from the corresponding nitro-compounds may either be a mixture of the oxides or silver and chromium with or without another metal such as cobalt, copper, lead, cadmium, aluminium, iron, thorium and preferably manganese, or a mixture of the oxides of silver and manganese with or without the oxide of another metal such as chromium, lead, cobalt, copper, cadmium, and preferably nickel or zinc. A stabilizer such as barium or calcium oxide may also be present. The catalysts of the first type may be prepared by adding an ammoniacal solution of an alkali metal bichromate dropwise to the metal nitrates dissolved in water at 60-80 DEG C. The mixture is then cooled and the precipitate filtered and dried at 100 DEG C. The catalyst may be treated with acetic acid. The active catalysts are obtained by drying at room temperature in a vacuum. The ratio of silver nitrate to manganese nitrate is preferably between ...

PREPARING SILVER CATALYST

A process for the production of phthalic acid anhydride by air oxidation of aromatic hydrocarbon

Oxidation of o-xylene and/or naphthalene in vapour phase to phthalic anhydride is effected in the presence of V2O5 and H3BO3 and/or a borate. Oxidation may be effected in a fixed or fluidized bed at 420-430 DEG C., with an air : o-xylene ratio of 150 : 1 and a throughput of 400-600 litres/hours.ALSO:An oxidation catalyst comprises V2O5 and 0,2-10% boric acid and/or salt thereof. Additionally the catalyst may contain Co, Mo, W, Ce, U, Sn and/or Ag.

Catalyst and method for its preparation

PROCESS FOR PRODUCING UNSATURATED ALIPHATIC ACIDS AND CATALYSTS THEREFOR

TRANSFORMATION OF A PRÄKATALYSATORS INTO A CATALYTICALLY ACTIVE ONE SILVER VANADIUM OXIDE BRONZE

Process for the preparation of novel diazepinoindoles

ETHYLENE OXIDE CATALYST AND PROCESS FOR THE CATALYTIC PRODUCTION OF ETHYLENE OXIDE

T 2027 ETHYLENE OXIDE CATALYST AND PROCESS FOR THE CATALYTIC PRODUCTION OF ETHYLENE OXIDE A composition containing silver, a support, rhenium and at least one further metal, characterized in that the selected amounts of the metals or compounds are such that under conditions of catalytic manufacture of ethylene oxide from ethylene and oxygen the composition comprises a catalytically effective amount of silver, a promoting amount of rhenium or compound thereof and a promoting amount of at least one further metal or compound thereof. T5/T2027.txt ...

PROCESS FOR PRODUCING UNSATURATED ALIPHATIC ACIDS AND CATALYSTS THEREFOR

EPOXIDATION PROCESS USING SUPPORTED SILVER CATALYSTS TREATED WITH CARBON DIOXIDE

The catalytic performance of a supported silver catalyst in a propylene epoxidation process is improved by first contacting the catalyst at an elevated temperature with a treatment stream comprised of carbon dioxide. The carbon dioxide-treated catalyst is thereafter contacted with a feedstream containing propylene, molecular oxygen, but essentially no carbon dioxide under conditions effective to form propylene oxide.

Process for the production of dinitrile of adipic acid

Method of preparation of phtalic anhydride by oxidation by the air of an aromatic hydrocarbon

Oxidn catalysts contg silver vanadate - for quantitative combustion of organic materials

Process of hydrocarbon hydrogenating oil cracking and method of preparation of catalysts usable for the implementation of the above mentioned process

Processo de epoxidação usando catalisadores de prata suportados tratados com dióxido de carbono

Vinil asetat üretimi için katalizör.

High efficiency extraction method for recovering oxidation catalyst material from dimethyl terephthalate esterified oxidate residue and the like

Disclosed is a highly efficient continuous method for the aqueous extraction of water-soluble oxidation catalyst material from a residue such as that generated in the production of dimethyl terephthalate from p-xylene by the molecular oxygen oxidation and methanol esterification process. In the method the desired end product is an aqueous solution of the catalyst material. The residue to be extracted is established in finely dispersed condition in part of the aqueous solution at a weight ratio of aqueous solution to residue of above about 1:1 and maintained in that condition for a length of time sufficient for maximum transfer of catalyst material from the residue to the aqueous solution to take place. The resulting dispersion then is separated in a phase separation zone into an aqueous phase and an extracted residue phase. The separated aqueous phase is withdrawn from the phase separation zone as the aqueous solution. The separated extracted residue phase is withdrawn from the phase separation ...

Method for improving the selectivity of a catalyst and a process for the epoxidation of an olefin

A method for improving the selectivity of a supported highly selective epoxidation catalyst comprising silver in a quantity of at most 0.17 g per m2 surface area of the support, which method comprises contacting the catalyst, or a precursor of the catalyst comprising the silver in cationic form, with a feed comprising oxygen at a catalyst temperature above 250° C. for a duration of up to 150 hours, and subsequently decreasing the catalyst temperature to a value of at most 250° C.; and a process for the epoxidation of an olefin, which process comprises contacting a supported highly selective epoxidation catalyst comprising silver in a quantity of at most 0.17 g per m2 surface area of the support, or a precursor of the catalyst comprising the silver in cationic form, with a feed comprising oxygen at a catalyst temperature above 250° C. for a duration of up to 150 hours, and subsequently decreasing the catalyst temperature to a value of at most 250° C. and contacting the catalyst with the ...

排気ガス浄化用触媒

PGM-FREE WASH COAT FOR DIESEL PARTICULATE FILTER WITH CATALYST

PROBLEM TO BE SOLVED: To provide a PGM (platinum group metal)-free wash coat which can realize a combination of cost effectiveness with efficiency in a diesel particulate filter (DPF) with a catalyst. SOLUTION: In this PGM-free wash coat, a catalyst composition containing silver- and/or cobalt-stabilized ceria promotes the oxidation of soot during regeneration of DPF. The catalyst composition is useful as a wash coat composition for removing and/or minimizing exhausted matter, particularly for DPF as a part of an automobile post-treatment system particularly for a direct fuel ejection engine vehicle. The silver-stabilized ceria component and the cobalt-stabilized ceria component oxidize soot at 250 to 300°C in the presence of NO2 and oxygen. An Ag-La-Mn perovskite component was very active at a temperature of above 300°C. The regeneration capability was substantially equal to or better than a Pt component supported at a Pt level of 28.32 g Pt/m3. The equilibrium point is provided at 250 ...

СПОСОБ ПОЛУЧЕНИЯ КАТАЛИЗАТОРА, КАТАЛИЗАТОР И СПОСОБ ПОЛУЧЕНИЯ ОЛЕФИНОКСИДА, 1,2-ДИОЛА, ПРОСТОГО ЭФИРА 1,2,-ДИОЛА ИЛИ АЛКАНОЛАМИНА

... 1. Способ получения катализатора, содержащий нанесение металла на носитель, полученный при: ! обработке одного или более термически разлагающихся материалов в форме частиц, содержащих калий, в условиях, достаточных для снижения общего количества калия в термически разлагающемся материале, ! получении смеси, содержащей обработанный термически разлагающийся материал и термически спекающийся материал, и ! нагревании смеси для спекания термически спекающегося материала и термического разложения обработанного термически разлагающегося материала с образованием носителя. ! 2. Способ по п.1, в котором общее количество калия снижается, по меньшей мере, на 30%, рассчитанных на массу калия в обработанном термически разлагающемся материале по отношению к массе калия в необработанном термически разлагающемся материале, в частности, по меньшей мере, на 40%. ! 3. Способ по п.1 или 2, в котором стадия обработки содержит взаимодействие термически разлагающегося материала с жидкостью. ! 4. Способ по п.3, ...

СПОСОБ ИЗГОТОВЛЕНИЯ ФОРМОВАННОГО КАТАЛИЗАТОРА, КАТАЛИЗАТОР И ИСПОЛЬЗОВАНИЕ ТАКОГО КАТАЛИЗАТОРА

... 1. Способ изготовления формованного катализатора для эпоксидирования олефина, который включает формование пасты с образованием формованных частиц и сушку формованных частиц, при этом паста содержит материал носителя или его предшественник, а также компонент серебра, и материал носителя или его предшественник имеет величину d90 не более 12,5 мкм, и, по меньшей мере, 10,5 об.% и не более 80 об.% материала носителя или его предшественника имеет размер частиц менее 2 мкм. ! 2. Способ по п.1, в котором по меньшей мере 11 об.%, в частности по меньшей мере 12 об.%, более конкретно по меньшей мере 15 об.%, и наиболее конкретно по меньшей мере 20 об.% материала носителя или его предшественника имеет размер частиц менее 2 мкм. ! 3. Способ по п.1 или 2, в котором не более 60 об.%, в частности не более 50 об.% материала носителя или его предшественника имеет размер частиц менее 2 мкм. ! 4. Способ по п.1, в котором по меньшей мере 50 об.% и не более 95 об.% материала носителя или его предшественника ...

СПОСОБ ПОЛУЧЕНИЯ КАТАЛИЗАТОРА ЭПОКСИДИРОВАНИЯ

... 1. Способ получения катализатора, пригодного для газофазного получения оксида этилена из этилена и кислорода, включающий стадии, на которых:обеспечивают предшественник катализатора, содержащий инертный носитель, имеющий каталитически эффективное количество серебросодержащего соединения, промотирующее количество соединения щелочного металла и промотирующее количество соединения переходного металла, находящиеся на нем; инагревают данный предшественник катализатора в газовой атмосфере в течение первого периода времени и второго периода времени, где в течение первого периода времени данная газовая атмосфера является инертной газовой атмосферой и интервал температур составляет от приблизительно 25°С до приблизительно 600°С, и затем во втором периоде времени газовая атмосфера является кислородсодержащей атмосферой и интервал температур второго периода составляет от приблизительно 350°С до приблизительно 600°С.2. Способ по п.1, в котором инертный носитель содержит альфа оксид алюминия.3. Способ ...

Катализаторы эпоксидировани , содержащие металлы семейства лантаноидов

... 1. Способ эпоксидирования олефинов, использующий молекулярный кислород и водород, отличающийся тем, что в качестве катализатора применяется соединение, включающее золото, предпочтительно в виде частиц указанного в нанометрах размера, на носителе, где носитель содержит один или более элемент(ов), выбранных из группы, состоящей из скандия, иттрия, лантаноида, циркония, гафния, ванадия, ниобия, тантала, хрома, молибдена и/или вольфрама, и, по существу, не содержит титана. 2. Способ по п.1, отличающийся тем, что олефин выбирается из группы, состоящей из пропена и бутена. 3. Соединение, включающее золото, предпочтительно в виде частиц указанного в нанометрах размера, на носителе, где носитель содержит один или более элемент(ов), выбранных из группы, состоящей из скандия, иттрия, лантаноида, циркония, гафния, ванадия, ниобия, тантала, хрома, молибдена и/или вольфрама, и, по существу, не содержит титана. 4. Способ получения соединения по пп.1 и/или 3, отличающийся тем, что частицы золота указанного ...

Katalysator für die katalytische Gasphasenoxidation von aromatischen Kohlenwasserstoffen zu Aldehyden, Carbonsäuren und/oder Carbonsäureanhydriden, insbesondere zu Phthalsäureanhydrid, sowie Verfahren zur Herstellung eines solchen Katalysators

Die Erfindung betrifft einen Katalysator für die katalytische Gasphasenoxidation von aromatischen Kohlenwasserstoffen zu Aldehyden, Carbonsäuren und/oder Carbonsäureanhydriden, insbesondere zu Phthalsäureanhydrid, wobei die aktive Masse Vanadiumoxid, bevorzugt Vanadiumpentoxid, Titandioxid, bevorzugt in der Anatas-Modifikation, und mindestens ein Mischelementoxid des Silbers mit definierten Elementen, bevorzugt Vanadium und/oder Molybdän und/oder Wolfram und/oder Niob und/oder Antimon, und/oder ein Mischelementoxid des Vanadiums mit definierten Elementen, bevorzugt Wismut und/oder Molybdän und/oder Wolfram und/oder Antimon und/oder Niob, aufweist, und wobei bei der Herstellung des Katalysators, insbesondere bei der Herstellung einer Katalysatorsuspension oder eines für die Beschichtung eines Trägers benötigten Pulvergemisches, mindestens ein Mischelementoxid des Silbers und/oder des Vanadiums und/oder mindestens eine Vorläuferverbindung, insbesondere mindestens eine mehrkernige Vorläuferverbindung ...

Olefin production process

A novel olefin production process is provided which can be established as an industrial and practical process capable of producing olefins by directly reacting a ketone and hydrogen in a single reaction step. In particular, a novel olefin production process is provided in which propylene is obtained with high selectivity by directly reacting acetone and hydrogen. The olefin production process according to the present invention includes reacting a ketone and hydrogen in the presence of at least one dehydration catalyst and a silver-containing catalyst, and the at least one dehydration catalyst is selected from metal oxide catalysts containing a Group 6 element, zeolites, aluminas and heteropoly acid salts in which part or all the protons in heteropoly acids are exchanged with metal cations.

Nanoparticular metal oxide/anatase catalysts

The present invention concerns a method of preparation of nanoparticular metal oxide catalysts having a narrow particle size distribution. In particular, the invention concerns preparation of nanoparticular metal oxide catalyst precursors comprising combustible crystallization seeds upon which the catalyst metai oxide is co-precipitated with the carrier metal oxide, which crystallization seeds are removed by combustion in a final calcining step. The present invention also concerns processes wherein the nanoparticular metal oxide catalysts of the invention are used, such as SCR (deNOx) reactions of nitrogen oxides with ammonia or urea as reductant, oxidations of alcohols or aldehydes with dioxygen or air to provide aldehydes, ketones or carboxylic acids, and photocatalytic oxidation of volatile organic compounds (VOCs).

Catalyst for production of hydrogen and process for producing hydrogen using the catalyst, and catalyst for combustion of ammonia, process for producing the catalyst and process for combusting ammonia using the catalyst

Disclosed is a catalyst which can be used in the process for producing hydrogen by decomposing ammonia, can generate heat efficiently in the interior of a reactor without requiring excessive heating the reactor externally, and can decompose ammonia efficiently and steadily by utilizing the heat to produce hydrogen. Also disclosed is a technique for producing hydrogen by decomposing ammonia efficiently utilizing the catalyst. Specifically disclosed is a catalyst for use in the production of hydrogen, which is characterized by comprising an ammonia-combusting catalytic component and an ammonia-decomposing catalytic component. Also specifically disclosed is a catalyst for use in the production of hydrogen, which is characterized by comprising at least one metal element selected from the group consisting of cobalt, iron, nickel and molybdenum.

Catalyst and method for partially oxidizing hydrocarbons

The invention relates to a catalyst for partially oxidizing hydrocarbons in the gas phase, containing a multi-metal oxide of the general formula (I), AgaMObVcMdOe.f H2O (I), wherein M stands for at least one element selected from among Li, Na, K, Rb, Cs, Be, Mg, Ca, Sr, Ba, B, Al, Ga, In, Si, Sn, Pb, P, Sb, Bi, Y, Ti, Zr, Hf, V, Nb, Ta, Cr, W, Mn, Re, Fe, Ru, Os, Co, Rh, Ir, Ni, Pd, Pt, Cu, Au, Zn, Cd, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and U, a has a value of 0.5 to 1.5, b has a value of 0.5 to 1.5, c has a value of 0.5 to 1.5, a+b+c has the value 3, d has a value of less than 1, e means a number that is determined by the valence and frequency of the elements other than oxygen in the formula (I), f has a value of 0 to 20, which multi-metal oxide exists in a crystal structure, the X-ray powder diffractogram of which is characterized by diffraction reflections at a minimum of 5 lattice distances selected from among d=4.53, 3.38, 3.32, 3.23, 2.88, 2.57, 2.39, 2.26, 1.83, 1.77 AA (+−0.04 AA).

process for the production of an olefin oxide

The invention provides a process for the epoxidation of an olefin, which process comprises reacting a feed comprising an olefin and oxygen in the presence of a catalyst comprising a carrier and silver deposited on the carrier, which carrier comprises at least 85 weight percent α-alumina and has a surface area of at least 1.3 m 2 /g, a median pore diameter of more than 0.8 μm, and a pore size distribution wherein at least 80% of the total pore volume is contained in pores with diameters in the range of from 0.1 to 10 μm and at least 80% of the pore volume contained in the pores with diameters in the range of from 0.1 to 10 μm is contained in pores with diameters in the range of from 0.3 to 10 μm.

Engine exhaust catalysts doped with bismuth or manganese

An emission control catalyst is doped with bismuth, manganese, or bismuth and manganese. The doped catalyst may be a palladium-gold catalyst or a platinum-based catalyst, or both. The doped palladium-gold catalyst and the doped platinum-based catalyst may be contained in a single washcoat layer or in different washcoat layers of a multi-brick, multi-zoned, or multi-layered emission control system. In all embodiments, zeolite may be added as a hydrocarbon absorbing component.

COMPONENT HAVING A CATALYTIC SURFACE, METHOD FOR PRODUCING SAME AND USE OF SAID COMPONENT

A component includes a catalyst surface having regions of CeO2 and regions of MnO2 that contact the regions of CeO2. Said material pairings may provide an improved catalytic effect compared to pure oxides. Said surfaces can, for example, also be used in indoor air purification to reduce the ozone content. The surface can, for example, be applied by coating the component and processed by cold-gas spraying of, for example, particles made of MnO2, to which CeO2 is applied. 117-. (canceled)18. A component part , comprising:{'sub': '2', 'a catalyst surface including regions of CeO,'}{'sub': 2', '2, 'regions of MnOin contact with the regions of CeO, the oxide particles covering only regions of the catalyst surface, and'}{'sub': '2', 'metallic regions of Ag or Ni or Co or Cu or Sn or Zn or alloys of at least one of these metals provided to the catalyst surface, the metallic regions adjoining the regions of MnO.'}19. The component part of claim 18 , wherein the manganese oxide comprises the γ polymorph of MnO.20. The component part of claim 19 , wherein the structural proportion of the manganese oxide present in the γ polymorph is more than 50% by weight.21. The component part of claim 18 , wherein the regions of CeOand the regions of MnOare provided in a coating provided on the catalyst surface.22. The component part of claim 21 , wherein:the component part comprises Ag or Ni or Cu or Co or Sn or Zn or alloys of at least one of these metals, and{'sub': 2', '2, 'the coating is applied to the component part as a partly covering ceramic layer of CeOand MnO, such that the component additionally provides a metallic region for the catalyst surface.'}23. The component part of claim 21 , wherein:{'sub': 2', '2, 'the coating comprises a ceramic layer that provides the regions of MnOand CeO, and'}the ceramic layer is partially covered by a metallic layer of Ag or Ni or Cu or Co or Sn or Zn or alloys of at least one of these metals.24. The component part of claim 21 , wherein the ...

MULLITE-CONTAINING CARRIER FOR ETHYLENE OXIDE CATALYSTS

The present invention relates to an improved carrier for an ethylene epoxidation catalyst, the carrier comprising alumina in combination with a stability-enhancing amount of mullite. The invention is also directed to an improved catalyst containing the improved carrier, as well as an improved process for the epoxidation of ethylene using the catalyst of the invention. 1. An ethylene epoxidation catalyst comprising:a) a carrier comprising alumina in combination with a stability-enhancing amount of mullite;b) a catalytic amount of silver deposited on and/or in said carrier; andc) a promoting amount of rhenium deposited on and/or in said carrier.2. The catalyst according to claim 1 , wherein the alumina is a-alumina.3. The catalyst according to claim 1 , wherein the stability-enhancing amount of mullite is about 0.5-20% mullite.4. The catalyst according to claim 1 , wherein the stability-enhancing amount of mullite is about 1-15% mullite.5. The catalyst according to claim 1 , wherein the stability-enhancing amount of mullite is about 1-12% mullite.6. The catalyst according to claim 1 , wherein the stability-enhancing amount of mullite is about 3-15% mullite.7. The catalyst according to claim 1 , wherein the stability-enhancing amount of mullite is about 3-12% mullite.8. The catalyst according to claim 1 , further comprising a promoting amount of an alkali or alkaline earth metal.9. The catalyst according to claim 1 , further comprising a promoting amount of cesium.10. The catalyst according to claim 1 , further comprising a promoting amount of tungsten.11. The catalyst according to claim 1 , further comprising a promoting amount of sulfur.12. The catalyst according to claim 1 , further comprising a promoting amount of cesium claim 1 , lithium claim 1 , tungsten claim 1 , and sulfur.13. The catalyst according to claim 1 , further comprising a promoting amount of cesium claim 1 , lithium claim 1 , and sulfur.14. The catalyst according to claim 1 , wherein the carrier ...

HETEROGENEOUS CATALYSTS

Convert a mixture of synthesis gas and ethylene to a product stream that contains at least one C3 oxygenate using a supported, heterogeneous catalyst represented by formula RhAgSnXYO. In the formula, X is at least one transition element other than rhodium or silver, and Y is at least one element selected from alkali metals and alkaline earth metals. 1. A process for converting a feedstream comprising syngas and ethylene to a product stream that comprises at least one three carbon oxygenate , which process comprises placing the feedstream in contact with a heterogeneous catalyst under conditions sufficient to effect conversion of the feedstream to the product stream , the catalyst comprising a combination of metals on a catalyst support , the combination of metals being represented by general formula RhAgSnXYOwherein X is at least one transition element other than rhodium or silver , Y is at least one element selected from alkali metals and alkaline earth metals , a is a real number within a range of from 0.1 millimole/hectogram to 50 millimole/hectogram , b is a real number within a range of from 0 1 millimole/hectogram to 50 millimole/hectogram , c is a real number within a range of from 0 1 millimole/hectogram to 50 millimole/hectogram , d is a real number within a range of from 0 millimole/hectogram to 250 millimole/hectogram , e is a real number within a range of from 0 millimole/hectogram to 1500 millimole/hectogram , and x is a real number greater than zero needed to balance the total charges of Rh , Ag , Sn , X and Y elements , the catalyst support being at least one of silica , alumina , titania , magnesia , magnesium aluminate , and zinc aluminate.2. The process of claim 1 , wherein X is at least one element selected from a group consisting of zinc claim 1 , iron claim 1 , manganese claim 1 , chromium claim 1 , cobalt and iridium.3. The process of claim 1 , wherein the conditions include at least one of a temperature within a range of from 100° C. TO 450° C ...

Porous inorganic body

The present invention relates to a porous inorganic body comprising pores A having a pore size S A in the range of from 0.005 to 20 micrometer and a total pore volume V A , and comprising pores B having a pore size S B in the range of from more than 20 to 1000 micrometer and a total pore volume V B , wherein the total pore volume of the pores having a pore size in the range of from 0.005 to 1000 micrometer is V C and wherein the ratio R A =V A /V C is in the range of from 0.3 to 0.7 as determined via mercury intrusion porosimetry.

Ag/MnyOx/C CATALYST, PREPARATION AND APPLICATION THEREOF

An Ag/MnO/C catalyst is disclosed, wherein MnOis one of MnOand MnO, or the mixture of MnOand MnO, or the mixture of MnOand MnOwith the mass content of MnOin the mixture of MnOand MnObeing 0.01-99.9%. The catalyst is obtained by pyrolyzing AgMnOat a high temperature. The preparation method comprises two steps: (1) preparing AgMnOcrystal as the precursor; (2) preparing the Ag/MnO/C catalyst. The catalyst has advantages such as high oxygen reduction reaction (ORR) catalytic activity in an alkaline environment, good stability, abundant availability and low cost of raw materials, safety, non-toxicity and pollution-free, environmental friendliness, and adaptive capacity for massive production. The catalyst can be used as oxygen reduction catalyst in metal air fuel cell, alkali anion exchange membrane fuel cell and other alkaline environments. 1. A kind of Ag/MnO/C catalyst , wherein MnOis one of MnOand MnO , or the mixture of MnOand MnO , or the mixture of MnOand MnOwith 0.01-99.9% mass content of MnO.2. The Ag/MnO/C catalyst of claim 1 , wherein the percentage of total mass of Ag and MnOto Ag/MnO/C catalyst is 9.2-60%; and the molar ratio of Ag and MnOin Ag/MnO/C catalyst is 1:1-3:1.3. A preparation method of said Ag/MnO/C catalyst of claim 1 , comprising the following steps claim 1 ,{'sub': '4', '(1) preparing AgMnOcrystal as the precursor{'sub': 3', '4', '4, 'a. a mixture of AgNOand KMnOis added to hot water of 70-100° C., and followed by stirring to form a uniform mixture, cooling to 0-5° C. to make AgMnOcrystals precipitated, washing the solid substance after filtration with cold water of 0-5° C.;'}{'sub': '4', 'b. a precursor, AgMnOpurple crystal, is obtained when said washed solid substance is dried naturally in a dark environment;'}{'sub': y', 'x, '(2) preparing the Ag/MnO/C catalyst{'sub': '4', 'a. said precursor, AgMnOcrystal, is dissolved in deionized water to form a solution;'}b. carbon support with desired ratio is added to said solution from step (2) a to ...

PROCESS FOR TREATING A CARRIER, A PROCESS FOR PREPARING A CATALYST, THE CATALYST, AND USE OF THE CATALYST

A process for treating a carrier, or a precursor thereof, to at least partly remove impurities from the carrier, or the precursor thereof, comprising: contacting the carrier, or the precursor thereof, with a treatment solution comprising a salt in a concentration of at most 0.05 molar, wherein the salt comprises a cation and an anion, and wherein the cation is selected from ammonium, phosphonium, organic cations and combinations thereof, and wherein the anion is selected from organic anions, inorganic carboxylates, oxyanions of elements from Groups IIIA through VIIA of the Periodic Table of Elements, and combinations thereof; and separating at least part of the treatment solution from the carrier, or the precursor thereof. 1. A process for treating a carrier , or a precursor thereof , to at least partly remove impurities from the carrier , or the precursor thereof , comprising:contacting the carrier, or the precursor thereof, with a treatment solution comprising a salt in a concentration of at most 0.05 molar, wherein the salt comprises a cation and an anion, and wherein the cation is selected from ammonium, phosphonium, organic cations and combinations thereof, and wherein the anion is selected from organic anions, inorganic carboxylates, oxyanions of elements from Groups IIIA through VIIA of the Periodic Table of Elements, and combinations thereof; andseparating at least part of the treatment solution from the carrier, or the precursor thereof.2. The process as claimed in claim 1 , wherein the oxyanion is selected from borate claim 1 , metaborate claim 1 , tetraborate claim 1 , tetrafluoroborate claim 1 , carbonate claim 1 , hydrogencarbonate claim 1 , chlorate claim 1 , perchlorate claim 1 , bromate claim 1 , perbromate claim 1 , phosphate claim 1 , metaphosphate claim 1 , orthophosphate claim 1 , hydrogenphosphate claim 1 , dihydrogenphosphate claim 1 , fluorophosphates claim 1 , phosphite claim 1 , hydrogenphosphite claim 1 , sulfate claim 1 , disulfate claim 1 ...

Catalyst for the epoxidation of alkenes

The present invention relates to a catalyst for preparing alkylene oxides, which is a supported silver catalyst having a novel promoter combination. The present invention further relates to a process for producing the catalyst and the use of the catalyst for the oxidation of alkylenes to alkylene oxides. In addition, the present invention relates to a process for preparing ethylene oxide from ethylene, which comprises the oxidation of ethylene in the presence of the stated catalyst.

Manganese Oxides and Their Use in the Oxidation of Alkanes

Catalytic structures are provided comprising octahedral tunnel lattice manganese oxides ion-exchanged with metal cations or mixtures thereof. The structures are useful as catalysts for the oxidation of alkanes and may be prepared by treating layered manganese oxide under highly acidic conditions, optionally drying the treated product, and subjecting it to ion exchange.

VISIBLE LIGHT CATALYST FOR REMOVING SULFUR-CONTAINING COMPOUNDS IN FUEL OIL, AND PREPARATION AND USE

This invention relates to a visible-light-responsive photocatalyst for photocatalyticly oxidation desulphurization and method for preparation and application thereof. The catalyst is comprised of one type of metal M, one type of metal oxide MOand BiVOas the supporter, wherein the mass ratio of the sum of the two types of metal (M+M) to BiVOis from 1:5000 to 1:50; the mass ratio of the type of metal Mto the type of metal Mis from 1:50 to 50:1. The catalyst is used in the photocatalytic oxidation desulphurization. Under mild condition (room temperature, 1 atm), using Oas the oxidant and xenon lamp (wavelength 420 nm<λ<700 nm) as the light source, avoid the oil's absorption of light (mainly in the violet area which is below 420 nm), the desulphurization ratio of thiophene can be above 90%, meanwhile the oil won't be excited. The sulfur in thiophene can be oxidized to SOand absorbed by the absorbent after escaped from the reaction system. Thus extraction of the conventional oxidative desulphurization can be saved to lower the operation cost. The visible-light-responsive photocatalyst can be widely used in oil compared with the UV-light-responsive photocatalyst. We can recover the photocatalyst after the reaction by subsiding or centrifugation. 1. A visible-light-responsive photocatalyst for photocatalytic oxidation desulphurization , which is comprised of one type of metal M , one type of metal oxide MOand BiVOas the supporter , wherein the mass ratio of the sum of the two types of metal (M+M) to BiVOis from 1:5000 to 1:50; the mass ratio of the type of metal Mto the type of metal Mis from 1:50 to 50:1; wherein the metal Mis selected from one of Pt , Pd or Au , and the metal Mis selected from one of Ru or Ir.2. A method for preparing the photocatalyst of claim 1 , comprising the steps of:{'sub': '4', 'a) firstly prepare BiVOas the supporter{'sub': '3', 'sup': '−1', 'adding bismuth salt and vanadic salt with the mol ratio of 1:0.5 to 1:2 into 2 M HNO(aq) to form a ...

Process for pre-treatment of a catalyst support and catalyst prepared therefrom

Methods of forming noble metal catalysts, noble metal catalysts formed therefrom and process for using noble metal catalysts are described herein. The methods generally include contacting a support material with a pre-treatment agent including a dilute basic solution of an alkali or alkaline earth metal to form a contacted support; drying the contacted support to form a pre-treated support; and impregnating the pre-treated support with at least one noble metal to form the noble metal catalyst.

METHODS FOR CONDITIONING AN ETHYLENE EPOXIDATION CATALYST AND ASSOCIATED METHODS FOR THE PRODUCTION OF ETHYLENE OXIDE

Methods for conditioning an ethylene epoxidation catalyst are provided. The conditioning methods comprise contacting an ethylene epoxidation catalyst comprising a carrier, having silver and a rhenium promoter deposited thereon, with a conditioning feed gas comprising oxygen for a period of time of at least 2 hours at a temperature that is above 180° C. and at most 250° C., wherein the contacting of the ethylene epoxidation catalyst with the conditioning feed gas occurs in an epoxidation reactor and in the absence of ethylene. Associated methods for the epoxidation of ethylene are also provided. 1. A method for the conditioning of an ethylene epoxidation catalyst comprising:contacting an ethylene epoxidation catalyst comprising a carrier, having silver and a rhenium promoter deposited thereon, with a conditioning feed gas comprising oxygen for a period of time of at least 2 hours at a temperature that is above 180° C. and at most 250° C., wherein the contacting of the ethylene epoxidation catalyst with the conditioning feed gas occurs in an epoxidation reactor and in the absence of ethylene.2. The method of wherein the conditioning gas further comprises an inert gas and an organic chloride.3. The method of wherein the temperature is from at least 185° C. to at most 250° C.4. The method of wherein the temperature is from at least 185° C. to at most 245° C.5. The method of wherein the conditioning feed gas comprises oxygen in a concentration of from 0.5 to 21 mole-% claim 1 , relative to the total conditioning feed gas.6. The method of wherein the period of time is from 2 hours to 200 hours.7. The method of wherein the period of time is from 2 hours to 72 hours.8. The method of further comprising contacting the ethylene epoxidation catalyst with a sweeping gas.9. A method for the epoxidation of ethylene comprising:contacting an ethylene epoxidation catalyst comprising a carrier, having silver and a rhenium promoter deposited thereon, with a conditioning feed gas ...

METHOD OF PREPARATION OF PEROVSKITE CATALYST

A preparation method of perovskite catalyst, represented by the following Chemical Formula 1: LaAgMnO(0.1≦x≦0.9), includes the steps of 1) preparing a metal precursor solution including a lanthanum metal precursor, a manganese metal precursor and a silver metal precursor, 2) adding maleic or citric acid to the metal precursor solution, 3) drying the mixture separately several times with sequentially elevating the temperature in the range of 160 to 210° C., and 4) calcining the dried mixture at 600 to 900° C. for 3 hours to 7 hours. 1. A preparation method of perovskite catalyst , represented by the following Chemical Formula 1: LaAgMnO(0.1≦x≦0.9) , including the steps of:1) preparing a metal precursor solution including a lanthanum metal precursor, a manganese metal precursor and a silver metal precursor;2) adding citric acid to the metal precursor solution;3) drying the mixture separately several times while sequentially elevating the temperature in the range of 160 to 210° C.; and4) calcining the dried mixture at 600 to 900° C. for 3 hours to 7 hours.2. The preparation method according to claim 1 , wherein the lanthanum metal precursor is La(NO).6HO.3. The preparation method according to claim 1 , wherein the manganese metal precursor is Mn(NO).6HO.4. The preparation method according to claim 1 , wherein the silver metal precursor is AgNO.5. The preparation method according to claim 1 , wherein the solvent of the metal precursor solution is distilled water.6. The preparation method according to claim 1 , wherein the amount of citric acid added is 0.2 to 2.0 moles per the total mole of lanthanum claim 1 , manganese and silver in the metal precursor solution.7. The preparation method according to claim 1 , further including the step of stirring the solution at 70 to 90° C. for 6 to 10 hours and drying the same at 100 to 120° C. for 8 to 14 hours claim 1 , between step 2) and step 3).8. The preparation method according to claim 1 , wherein step 3) is carried out by ...

Solid-phase catalyst for decomposing hydrogen peroxide and method for producing same

The present invention provides a solid-phase catalyst for decomposing hydrogen peroxide comprising a permanganate salt and a manganese (II) salt. The solid-phase catalyst stays a solid state in the form of nanoparticles at the time of hydrogen peroxide decomposition, and thus can be recovered for reuse and also has an excellent decomposition rate. In the method for producing a solid-phase catalyst for decomposing hydrogen peroxide according to the present invention, a solid-phase catalyst is produced from a solution containing a permanganate salt, a manganese (II) salt, and an organic acid, so that the produced solid-phase catalyst is precipitated as a solid component even after a catalytic reaction, and thus is reusable and environmentally friendly, and cost reduction can be achieved through the simplification of a catalyst production technique.

Silver Promoted Catalysts for Oxidative Coupling of Methane

An oxidative coupling of methane (OCM) catalyst composition comprising one or more oxides doped with Ag; wherein one or more oxides comprises a single metal oxide, mixtures of single metal oxides, a mixed metal oxide, mixtures of mixed metal oxides, or combinations thereof; and wherein one or more oxides is not LaOalone. A method of making an OCM catalyst composition comprising calcining one or more oxides and/or oxide precursors to form one or more calcined oxides, wherein the one or more oxides comprises a single metal oxide, mixtures of single metal oxides, a mixed metal oxide, mixtures of mixed metal oxides, or combinations thereof, wherein the one or more oxides is not LaOalone, and wherein the oxide precursors comprise oxides, nitrates, carbonates, hydroxides, or combinations thereof; doping the one or more calcined oxides with Ag to form the OCM catalyst composition; and thermally treating the OCM catalyst composition. 1. An oxidative coupling of methane (OCM) catalyst composition doped with silver (Ag).2. The OCM catalyst composition of claim 1 , wherein the OCM catalyst composition comprises one or more oxides doped with silver (Ag); wherein the one or more oxides comprises a single metal oxide claim 1 , mixtures of single metal oxides claim 1 , a mixed metal oxide claim 1 , mixtures of mixed metal oxides claim 1 , or combinations thereof; and wherein the one or more oxides is not LaOalone.3. The OCM catalyst composition of claim 2 , wherein the single metal oxide comprises one metal cation selected from the group consisting of alkali metal cations claim 2 , alkaline earth metal cations claim 2 , rare earth element cations claim 2 , and cations of elements that can form oxides with redox properties.4. The OCM catalyst composition of claim 2 , wherein the mixed metal oxide comprises two or more different metal cations claim 2 , wherein each metal cation can be independently selected from the group consisting of alkali metal cations claim 2 , alkaline earth ...

POST TREATED SILVER CATALYSTS FOR EPOXIDATION

The present disclosure generally relates to a silver-based epoxidation catalyst. In certain embodiments, a method is provided for modulating the reactivity of the silver-based epoxidation catalyst, comprising the catalyst being post-treated with at least two different salt solutions. In some embodiments, the treatment results in the deposition of one or more metals onto the surface of the catalyst. In further embodiments, method is also provided of using the silver catalyst to generate an epoxide from an olefin. 1. A catalyst comprising:A) from about 10 wt % to about 70 wt % of silver;B) from about 0.0 wt % to about 5.0 wt % of a promoter selected from the group consisting of rhenium, tungsten, zinc, nickel, gold, copper, scandium, ytterbium, sodium, potassium, lithium, rubidium, cesium, and molybdenum;C) from about 30 wt % to about 90 wt % of a solid component selected from the group consisting of calcium titanate, magnesium titanate, barium titanate, strontium titanate, calcium carbonate, magnesium carbonate, barium carbonate, and strontium carbonate; andD) from about 0.1 wt % to about 6.5 wt % of a salt mixture comprising a first salt and a second salt, wherein the first salt is a Group 1 salt and the second salt is selected from gallium, silver, gold, calcium, barium, strontium, and magnesium salt, and wherein the salt mixture coats the silver, the sold support, or the promoter.2. The catalyst of claim 1 , wherein the promoter is selected from molybdenum claim 1 , zinc claim 1 , and rhenium.3. The catalyst of claim 1 , wherein the solid component is calcium carbonate.4. The catalyst of claim 1 , wherein the first salt comprises from about 0.25 wt % to about 2.5 wt % of the catalyst.5. The catalyst of claim 1 , wherein the second salt comprises from about 0.1 wt % to about 2.0 wt % of the catalyst.6. The catalyst of claim 1 , wherein the silver comprises from about 30 wt % to about 60 wt % of the catalyst.7. The catalyst of claim 1 , wherein the solid component ...

Post impregnation heat treatment for silver-based epoxidation catalysts

The present disclosure is directed to the preparation of silver-based HSCs. During preparation of the catalyst a selected carrier is co-impregnated with a solution containing a catalytically effective amount of silver and a promoting amount of rhenium and other promoters. After co-impregnation, the carrier is subjected to a separate heat treatment prior to calcination. Such heat treatment is conducted for between about 1 minute and about 120 minutes at temperatures between about 40° C. and about 300° C. Catalysts prepared by the present methodology evidence improved selectivity, activity and/or stability resulting in an increase in the useful life of the catalyst.

CONVERSION OF MIXED METHANE/ETHANE STREAMS

The invention relates to a process for conversion of a stream comprising methane and ethane, comprising converting ethane from a stream comprising methane and ethane, in which stream the volume ratio of methane to ethane is of from 0.005:1 to 100:1, to a product having a vapor pressure at 0° C. lower than 1 atmosphere, resulting in a stream comprising methane and the product having a vapor pressure at 0° C. lower than 1 atmosphere; separating the product having a vapor pressure at 0° C. lower than 1 atmosphere from the stream comprising methane and the product having a vapor pressure at 0° C. lower than 1 atmosphere, resulting in a stream comprising methane; and chemically converting methane from the stream comprising methane, or feeding methane from the stream comprising methane to a network that provides methane as energy source, or liquefying methane from the stream comprising methane. 1. A process for conversion of a stream comprising methane and ethane , comprisingconverting ethane from a stream comprising methane and ethane, in which stream the volume ratio of methane to ethane is of from 0.005:1 to 100:1, preferably of from 0.2:1 to 100:1, more preferably of from 0.5:1 to 100:1, to a product having a vapor pressure at 0° C. lower than 1 atmosphere, resulting in a stream comprising methane and the product having a vapor pressure at 0° C. lower than 1 atmosphere;separating the product having a vapor pressure at 0° C. lower than 1 atmosphere from the stream comprising methane and the product having a vapor pressure at 0° C. lower than 1 atmosphere, resulting in a stream comprising methane; andchemically converting methane from the stream comprising methane or feeding methane from the stream comprising methane to a network that provides methane as energy source, or liquefying methane from the stream comprising methane.2. The process according to claim 1 , wherein when converting ethane to the product having a vapor pressure at 0° C. lower than 1 atmosphere claim ...

CATALYST EFFECTIVE IN THE OXIDATIVE CONVERSION OF ETHYLENE TO ETHYLENE OXIDE

The present invention provides a catalyst effective in the oxidative conversion of ethylene to ethylene oxide, comprising an alumina support and 20 to 45%by weight of the catalyst, of silver applied to the support, the catalyst meeting the following limitations (i) to (v): (i) an amount of cesium c(Cs) in mmol per Kg of catalyst of at least 2; (ii) an amount of rhenium c(Re) in mmol per Kg of catalyst of at least 3.0; (iii) an amount of tungsten c(W) in mmol per Kg of catalyst of at least 1.6; (iv) a silicon to alkaline earth metal molar ratio x of not higher than 1.80; (v) c(Cs)−c(Re)−c(W)≤4·x−0.5. 1. A catalyst effective in the oxidative conversion of ethylene to ethylene oxide , comprising an alumina support and 20 to 45% by weight of the catalyst , of silver applied to the support , the catalyst meeting the following limitations (i) to (v):(i) an amount of cesium c(Cs) in mmol per Kg of catalyst of at least 2;(ii) an amount of rhenium c(Re) in mmol per Kg of catalyst of at least 3.0;(iii) an amount of tungsten c(W) in mmol per Kg of catalyst of at least 1.6;(iv) a silicon to alkaline earth metal molar ratio x of not higher than 1.80;(v) c(Cs)−c(Re)−c(W)≤4·x−0.5.2. The catalyst according to claim 1 , wherein{'br': None, 'i': c', 'c', 'c', 'x−, '(Cs)−(Re)−(W)≤4·1.3.'}3. The catalyst according to claim 2 , wherein{'br': None, 'i': c', 'c', 'c', 'x−, '(Cs)−(Re)−(W)≤2.35·1.3.'}4. The catalyst according to claim 1 , wherein x is 0.1 to 1.46 claim 1 , preferably 0.1 to 1.10.5. The catalyst according to claim 1 , whereinc(Cs) is 4.5 to 11.3; and/orc(Re) is 3.0 to 9; and/orc(W) is 1.6 to 5.5.6. The catalyst according to claim 1 , comprising an amount of potassium c(K) in mmol per Kg of catalyst of 2.6 to 10.3.7. The catalyst according to claim 1 , comprising an amount of sodium c(Na) in mmol per Kg of catalyst of 0.2 to 10.8.8. The catalyst according to claim 1 , comprising an amount of lithium c(Li) in mmol per Kg of catalyst of 43 to 86.9. The catalyst according to ...

Supported catalyst

Described herein is a supported catalyst for a liquid-phase reaction, the supported catalyst comprising a perovskite support comprising A-site species and B-site species and a catalytic component on a surface of the perovskite support. Also described herein is a method for tuning the selectivity of a supported catalyst.

Diene production method

A method for producing diene comprises a step 1 of obtaining a straight chain internal olefin by removing a branched olefin from a raw material including at least the branched olefin and a straight chain olefin; and a step 2 of producing diene from the internal olefin by oxidative dehydrogenation using a first catalyst and a second catalyst, and the first catalyst has a complex oxide including bismuth, molybdenum and oxygen, and the second catalyst includes at least one selected from the group consisting of silica and alumina.

METHOD FOR MAKING A HIGHLY SELECTIVE ETHYLENE OXIDE CATALYST

A process for the preparation of a catalyst useful for the vapor phase production of ethylene oxide from ethylene and oxygen comprising providing a catalyst precursor comprising an inert support having a catalytically effective amount of a silver containing compound, a promoting amount of an alkali metal containing compound, and a promoting amount of a transition metal containing compound disposed thereon; calcining the catalyst precursor to convert the silver in the silver containing compound to metallic silver by heating the catalyst precursor to form a catalyst; and curing the catalyst in an inert gas atmosphere at temperatures of about 250° C. to about 600° C. for a period of about 1 hour to 200 hours. 1. A process for the preparation of a catalyst useful for the vapor phase production of ethylene oxide from ethylene and oxygen comprising:providing a catalyst precursor comprising an inert support having a catalytically effective amount of a silver containing compound, a promoting amount of an alkali metal containing compound, and a promoting amount of a transition metal containing compound disposed thereon;calcining the catalyst precursor to convert the silver in the silver containing compound to catalytically active metallic silver and to remove substantially all volatile components by heating the catalyst precursor to form a catalyst containing the catalytically active metallic silver and substantially no volatile components; andcuring the catalyst produced from the calcining in an inert gas atmosphere at a temperature of about 250° C. to about 600° C. for a period of about 1 hour to 200 hours.2. The process of claim 1 , wherein the calcining is performed in the presence of an inert gas atmosphere.3. The process of claim 2 , wherein the calcining is performed at a temperature from about 300° C. to about 500° C.4. The process of claim 1 , wherein the calcining is performed in the presence of an oxygen-containing atmosphere.5. The process of claim 4 , wherein ...

NOx ADSORBER CATALYST

A method of treating an exhaust gas from an internal combustion engine comprising contacting the exhaust gas with a lean NOtrap catalyst is disclosed. The lean NOtrap catalyst comprises a first layer and a second layer. 2. The method of claim 1 , wherein the rare earth dopant comprises one or more of scandium claim 1 , yttrium claim 1 , lanthanum claim 1 , praseodymium claim 1 , neodymium claim 1 , promethium claim 1 , samarium claim 1 , europium claim 1 , gadolinium claim 1 , terbium claim 1 , dysprosium claim 1 , holmium claim 1 , erbium claim 1 , thulium claim 1 , ytterbium claim 1 , lutetium claim 1 , or metal oxides thereof claim 1 ,preferably wherein the rare earth dopant comprises lanthanum, neodymium, or metal oxides thereof, more preferably wherein the rare earth dopant comprises lanthanum.3. The method of claim 1 , wherein the total loading of the one or more platinum group metals in the first layer is lower than the total loading of the one or more noble metals in the second layer claim 1 ,preferably wherein the ratio of the total loading of the one or more noble metals in the second layer to the total loading of the one or more platinum group metals in the first layer is at least 2:1 on a w/w basis.4. The method of claim 1 , wherein the total loading of the first ceria-containing material is greater than the total loading of the second ceria-containing material claim 1 ,preferably wherein the ratio of the total loading of the first ceria-containing material is greater than the total loading of the second ceria-containing material is at least 2:1 on a w/w basis.5. The method of claim 1 , wherein said one or more platinum group metals is selected from the group consisting of palladium claim 1 , platinum claim 1 , rhodium claim 1 , and mixtures thereof claim 1 ,preferably wherein said one or more platinum group metals is a mixture or alloy of platinum and palladium.6. The method of claim 1 , wherein the one or more platinum group metals are supported on the ...

Porous shaped metal-carbon products

The present invention provides a porous metal-containing carbon-based material that is stable at high temperatures under aqueous conditions. The porous metal-containing carbon-based materials are particularly useful in catalytic applications. Also provided, are methods for making and using porous shaped metal-carbon products prepared from these materials.

Diesel oxidation catalyst with nox adsorber activity

An oxidation catalyst for treating an exhaust gas from a diesel engine and an exhaust system comprising the oxidation catalyst are described. The oxidation catalyst comprises a washcoat region disposed on a substrate, wherein the washcoat region comprises: palladium (Pd), gold (Au) and a support material, wherein the palladium (Pd) and gold (Au) are supported on the support material; and a molecular sieve catalyst, wherein the molecular sieve catalyst comprises a noble metal and a molecular sieve.

High Productivity Catalyst for Alkane Oxidation to Unsaturated Carboxylic Acids and Alkenes

The present disclosures and inventions relate to composite catalyst compositions for the catalytic oxidation of hydrocarbons such as propane with an oxygen containing stream, in the presence of a composite catalyst comprising CA that comprises at least components a metal M, a support S, and an optional alkali metal A, and also CB that comprises one or more mixed metal oxide phases comprising metals in the relative molar ratios indicated by the formula Mo a V b Ga c Pd d Nb e X f , to produce α,β-unsaturated carboxylic acids such as acrylic acid and/or olefins such as propylene.

Organic matter decomposition catalyst, organic matter decomposition aggregate, and organic matter decomposition apparatus

An organic matter decomposition catalyst that contains a perovskite type complex oxide represented by A x B y M z O w , wherein A contains 90 at % or more of at least one element selected from the group consisting of Ba and Sr, B contains 80 at % or more of Zr, M is at least one element selected from the group consisting of Mn, Co, Ni, and Fe, y+z=1, x>1, z<0.4, and w is a positive value that satisfies electrical neutrality.

Multimetallic mixed oxides, its preparation and use for the oxidative dehydrogenation of ethane for producing ethylene

A layered multimetallic oxide catalyst having the formula M1 M2 M3 O δ wherein: M1 is selected from the group of Ag, Au, Zn, Sn, Rh, Pd, Pt, Cu, Ni, Fe, Co, an alkaline metal, an alkaline earth metal, a rare earth metal, and mixtures thereof; M2 is selected from the group of Ti, Hf, Zr, Sn, Bi, Sb, V, Nb, Ta and P, and mixtures thereof; M3 is selected from the group of Mo, W and Cr, and mixtures thereof; and where said multilayered metallic oxide exhibits a major X-ray diffraction peak between 5<2θ<15, is prepared by a process of mixing metallic precursors of M 1 , M 2 and M 3 to form a precursor mixture, hydrothermal treatment of the resulting mixture to obtain a homogeneous solid mixture, and thermally treating the solid mixture to activate the solid mixture and obtain said catalyst.

ORGANO-CATALYTIC BIOMASS DECONSTRUCTION

The present invention provides processes for catalytic deconstruction of biomass using a solvent produced in a bioreforming reaction. 1. A method of making a biomass hydrolysate , the method comprising:{'sub': 2+', '1+', '2+', '1-3, 'A. catalytically reacting water and a water-soluble CO oxygenated hydrocarbon in a liquid or vapor phase with H2 in the presence of a deoxygenation catalyst at a deoxygenation temperature and deoxygenation pressure to produce a biomass processing solvent comprising a COhydrocarbon in a reaction stream;'}B. reacting the biomass processing solvent with a solid biomass component, hydrogen and a deconstruction catalyst at a deconstruction temperature and a deconstruction pressure to produce a biomass hydrolysate comprising at least one member selected from the group consisting of a water-soluble lignocellulose derivative, a water-soluble cellulose derivative, a water-soluble hemicellulose derivative, a carbohydrate, a starch, a monosaccharide, a disaccharide, a polysaccharide, a sugar, a sugar alcohol, an alditol and a polyol, wherein the solid biomass component is selected from the group consisting of agricultural residues, wood materials, municipal solid waste and energy crops; andC. recycling the biomass hydrolysate into the reactants of step B.2. The method of claim 1 , wherein the biomass processing solvent comprises a member selected from the group consisting of an alcohol claim 1 , ketone claim 1 , aldehyde claim 1 , cyclic ether claim 1 , ester claim 1 , diol claim 1 , triol claim 1 , hydroxy carboxylic acid claim 1 , carboxylic acid claim 1 , and a mixture thereof.3. The method of claim 1 , wherein the deconstruction catalyst comprises an acidic resin or a basic resin.4. The method of claim 3 , wherein the deconstruction catalyst further comprises a member selected from the group consisting of Fe claim 3 , Co claim 3 , Ni claim 3 , Cu claim 3 , Ru claim 3 , Rh claim 3 , Pd claim 3 , Pt claim 3 , Re claim 3 , Mo claim 3 , W claim 3 ...

PHOTOCATALYST, MANUFACTURING METHOD THEREFOR, AND PHOTOCATALYST APPARATUS

Provided is a photocatalyst including: a porous metal oxide film; and metal particles formed on a surface of the porous metal oxide film. 1. A photocatalyst comprising:a porous metal oxide film; andmetal particles formed on a surface of the porous metal oxide film.2. The photocatalyst according to claim 1 , wherein the photocatalyst is activated by visible light of a wavelength from 380 nm to 700 nm.3. The photocatalyst according to claim 1 , wherein the metal particles form a discontinuous coating layer having island shapes on the surface of the porous metal oxide film.4. The photocatalyst according to claim 3 , wherein the island shapes have an average diameter from 1 nm to 10 nm.5. The photocatalyst according to claim 3 , wherein the discontinuous coating layer has a thickness from 0.1 nm to 10 nm.6. The photocatalyst according to claim 1 , wherein the metal oxide in the metal oxide film comprises at least one selected from among titanium oxide claim 1 , tungsten oxide claim 1 , zinc oxide claim 1 , niobium oxide claim 1 , and combinations thereof.7. The photocatalyst according to claim 1 , wherein the metal particles comprise at least one selected from among tungsten claim 1 , chromium claim 1 , vanadium claim 1 , molybdenum claim 1 , copper claim 1 , iron claim 1 , cobalt claim 1 , manganese claim 1 , nickel claim 1 , platinum claim 1 , gold claim 1 , silver claim 1 , cerium claim 1 , cadmium claim 1 , zinc claim 1 , magnesium claim 1 , calcium claim 1 , strontium claim 1 , barium claim 1 , and combinations thereof.8. The photocatalyst according to claim 1 , wherein the porous metal oxide film has a porosity from 5% to 50%.9. The photocatalyst according to claim 1 , wherein the porous metal oxide film has a specific surface area from 50 m/g to 500 m/g.10. The photocatalyst according to claim 1 , wherein the metal particles are present in an amount of 0.0001 mg to 0.01 mg per 1 cmof the porous metal oxide film.11. The photocatalyst according to claim 1 , wherein ...

CATALYST FOR PRODUCING ETHYLENE OXIDE, PROCESS FOR PRODUCING THE CATALYST AND PROCESS FOR PRODUCING ETHYLENE OXIDE

There is provided a catalyst for producing ethylene oxide from ethylene which is composed of at least silver (Ag), cesium (Cs), rhenium (Re) and a carrier, and can be improved, in particular, in selectivity. 19.-. (canceled)10. A catalyst for producing ethylene oxide from ethylene , comprising at least silver (Ag) , cesium (Cs) , rhenium (Re) and a carrier , which catalyst is produced by optionally pretreating the carrier to support an alkali metal thereon and then supporting Ag , Cs and Re on the carrier , in which the carrier has a specific surface area of 0.6 to 3.0 m/g and contains acid sites having a pKa value of not more than 5.0; a content of Re in the catalyst is 170 to 600 ppm per 1 m/g of the specific surface area of the carrier on the basis of a weight of the carrier; and a molar ratio of Cs to Re in the catalyst is 0.3 to 19.11. A catalyst according to claim 10 , wherein a molar ratio of Cs to Re (Cs/Re) in the catalyst is 1.5 to 4.5.12. A catalyst according to claim 10 , wherein the alkali metal optionally used for pretreating the carrier is lithium (Li) claim 10 , and a Li content in the pretreated carrier is 100 to 1000 ppm.13. A catalyst according to claim 10 , wherein the alkali metal optionally used for pretreating the carrier is cesium (Cs) claim 10 , and a Cs content in the pretreated carrier is 100 to 1000 ppm.14. A catalyst according to claim 10 , wherein a content of silver in the catalyst is 5 to 40% by weight on the basis of a whole weight of the catalyst.1521.-. (canceled) This application is a divisional of application Ser. No. 12/083,876 filed Mar. 17, 2009, which in turn claims priority of PCT/JP2007/000352 filed Mar. 30, 2007, which claims priority from JP 2006-107329 filed Apr. 10, 2006 and JP 2006-107330 filed Apr. 10, 2006, the entire contents of each of which are hereby incorporated by reference in this application.The present invention relates to a catalyst for producing ethylene oxide, a process for producing the catalyst, and a ...

AQUEOUS DISPERSION LIQUID AND COATING MATERIAL, FILM, AND PRODUCT USING THE SAME

In one embodiment, an aqueous dispersion liquid contains at least one particles selected from tungsten oxide particles and tungsten oxide composite particles. A mean primary particle diameter (D50) of the particles is in the range of 1 nm to 400 nm. In the aqueous dispersion liquid, concentration of the particles is in the range of 0.1 mass % to 40 mass %, and pH is in the range of 1.5 to 6.5. The aqueous dispersion liquid excels in dispersibility of particles and capable of maintaining good liquidity for a long period. 1. A photocatalytic material , comprising:a substrate; anda photocatalytic film, formed on the substrate, containing particles selected from the group consisting of tungsten oxide particles and tungsten oxide composite particles,wherein a mean primary particle diameter (D50) of the particles is from 1 nm to 400 nm,wherein the tungsten oxide composite contains at least one metal element selected from transition metal elements and aluminum, or a compound including at least one metal element selected from transition metal elements and aluminum, in a range of 0.001 mass % to 50 mass % as an amount of the metal element, balanced by tungsten oxide, and{'sup': '−1', 'wherein, when a surface state of the particles in the photocatalytic film is observed by a fourier-transform infrared absorption spectroscopy, an absorption peak based on hydroxyl exists in a vicinity of 3700 cmof an absorption spectrum obtained by the fourier-transform infrared absorption spectroscopy.'}2. The photocatalytic material according to claim 1 ,wherein the photocatalytic film exhibits photocatalytic performance when visible light is irradiated.3. The photocatalytic material according to claim 1 ,wherein the photocatalytic film contains at least one selected from the group consisting of a zeolite, an activated carbon, and a porous ceramic.4. The photocatalytic material according to claim 1 ,wherein the metal element is at least one element selected from the group consisting of ...

CALCINATION PROCESS FOR PRODUCING AN IMPROVED ETHYLENE OXIDE CATALYST

A method for producing a catalyst effective in the oxidative conversion of ethylene to ethylene oxide, the method comprising subjecting a refractory carrier impregnated with a liquid silver-containing solution to a calcination process, wherein the calcination process comprises a solvent removal step in which the silver-impregnated carrier is heated to a base temperature (T) of at least 80° C. and up to about 200° C. to produce a dry carrier impregnated with ionic silver, followed by a silver reduction step in which the dry carrier is gradually heated above the base temperature to a maximum temperature (T) of at least 350° C. and up to about 500° C. and then gradually cooled to the base temperature, wherein the method is conducted such that (T−T)×HW is at least 2000 min.° C. wherein HW is a full width at half maximum of a temperature versus time curve delineated by the silver reduction step. 1. A method for producing a catalyst effective in the oxidative conversion of ethylene to ethylene oxide , the method comprising subjecting a refractory carrier impregnated with a liquid silver-containing solution to a calcination process , wherein the calcination process comprises a solvent removal step in which the silver-impregnated carrier is heated to a base temperature (T) of at least 80° C. and up to about 200° C. to produce a dry carrier impregnated with ionic silver , followed by a silver reduction step in which the dry carrier is gradually heated above the base temperature under an inert atmosphere to a maximum temperature (T) of at least 350° C. and up to about 500° C. and then gradually cooled to the base temperature , wherein the method is conducted such that (T−T)×HW is at least 2000 min.° C. , wherein Tand Tare measured in ° C. , and HW is measured in minutes and is a full width at half maximum of a temperature versus time curve delineated by the silver reduction step where Tis taken as the baseline of the curve in calculating HW.2. The method of claim 1 , wherein ...

MULTIMETALLIC MIXED OXIDES, ITS PREPARATION AND USE FOR THE OXIDATIVE DEHYDROGENATION OF ETHANE FOR PRODUCING ETHYLENE

A layered multimetallic mixed oxide (LMMO) is characterized by one or more diffraction peaks at 5<2θ<15, preferably between 10<2θ<15. The catalysts can be represented by the general formula: 113-. (canceled)14. A process for preparing a nanometer and micrometer layered multimetallic oxide catalyst having the formula{'br': None, 'sub': 'δ', 'M1 M2 M3 O'}wherein:M1 is selected from the group of Ag, Au, Zn, Sn, Rh, Pd, Pt, Cu, Ni, Fe, Co, an alkaline metal, an alkaline earth metal, a rare earth metal, and mixtures thereof;M2 is selected from the group of Ti, Hf, Zr, Sn, Bi, Sb, V, Nb, Ta and P, and mixtures thereof;M3 is selected from the group of Mo, W and Cr, and mixtures thereof;and where said multilayered metallic oxide exhibits a major X-ray diffraction peak between 5<2θ<15,said process comprising the steps of{'sub': 1', '2', '3, 'mixing metallic precursors of M, Mand Mto form a precursor mixture,'}hydrothermal treatment of the resulting mixture to obtain a homogeneous solid mixture, andthermally treating the solid mixture to activate the solid mixture and obtain said catalyst.15. The process of claim 14 , whereinthe precursors are mixed by mechanical mixing or by dissolution of the corresponding metal salts.17. The process of claim 14 , further comprising the steps ofadding a chemical agent to the precursor mixture selected from the group consisting of an amino acid, glycine, amines, urea or carboxylic acids, or a mixture thereof.18. The process of claim 14 , whereinsaid precursors are selected from the group consisting of pure metallic elements, metallic salts, metallic oxides, metallic hydroxides, metallic alkoxides, acids, and mixtures thereof.19. The process of claim 18 , whereinsaid precursors are selected from the group consisting of nitrates, oxalates, sulfates, carbonates, halides, and mixtures thereof.20. The process of claim 14 , whereinsaid catalyst exhibits at least one X-ray diffraction pattern selected from the group consisting of monoclinic lattice ...

Templated catalyst composition and associated method

A composition includes a templated metal oxide, at least 3 weight percent of silver, and at least one catalytic metal. A method of making and a method of using are included.

EPOXIDATION METHODS

A method for the epoxidation of alkylenes is provided. The method makes use of an epoxidation catalyst comprising a support, silver, manganese and greater than 35 ppm sodium. The catalyst is produced by a method comprising impregnating the support with manganese prior to impregnating the support with sodium and impregnating the support with silver prior to, at the same time as, or after impregnation with manganese. A method for using the alkylene oxides for the production of 1,2-diols, 1,2-carbonates, 1,2-diol ethers is also provided. 1. A method for the epoxidation of one or more alkylenes comprising contacting one or more feed streams comprising an oxygen source and an alkylene in the presence of an epoxidation catalyst , wherein the epoxidation catalyst comprises a support , silver , manganese and greater than 35 ppm sodium , and is prepared by a method comprising:Impregnating the support with manganese prior to impregnating the support with sodium; andImpregnating the support with silver prior to, at the same time as or after impregnation with manganese.2. The method of claim 1 , carried out in the gas phase over a packed catalyst bed wherein the gas hourly space velocity in the start-up phase is from 2000 to 10000 per hour.3. The method of claim 1 , wherein the alkylene comprises 1 claim 1 ,9-decadiene claim 1 , 1 claim 1 ,3-butadiene claim 1 , 2-butene claim 1 , isobutene claim 1 , 1-butene claim 1 , propylene claim 1 , ethylene claim 1 , or combinations of these.4. The method of claim 1 , wherein the one or more feed streams further comprises one or more gas phase promoters selected from the group consisting of methyl chloride claim 1 , ethyl chloride claim 1 , ethylene dichloride claim 1 , ethylene dibromide claim 1 , vinyl chloride claim 1 , or any combination of these.5. The method of claim 1 , wherein the one or more feed streams further comprises carbon dioxide in a concentration of at most 3 mole percent claim 1 , based on the total reaction mixture.6. ...

POROUS SHAPED METAL-CARBON PRODUCTS

The present invention provides a porous metal-containing carbon-based material that is stable at high temperatures under aqueous conditions. The porous metal-containing carbon-based materials are particularly useful in catalytic applications. Also provided, are methods for making and using porous shaped metal-carbon products prepared from these materials. 1. A process for preparing a porous , shaped metal-carbon product , the process comprising:mixing a carbonaceous material with water, a water-soluble organic binder, and a (first) metal precursor to form a metal-carbon mixture, wherein the metal precursor is a compound selected from the group consisting of a metal carbonate, a metal oxide, a metal hydroxide, a salt of a metal acid, a heteropoly acid, a metal carboxylate, a metal carbide, a metal chloride, a metal amine complex-containing compound, a hydrate thereof, and a mixture of any two or more thereof;shaping the metal-carbon mixture to form a green shaped metal-carbon product; andheating the green shaped metal-carbon product to a carbonization temperature to produce a carbonized, shaped metal-carbon product comprising a plurality of pores.211-. (canceled)12. The process of claim 1 , wherein the metal precursor comprises a metal that is a base metal.13. The process of claim 1 , wherein the metal precursor comprises a metal selected from the group consisting of Cu claim 1 , Pb claim 1 , Ni claim 1 , Zn claim 1 , Fe claim 1 , Mo claim 1 , Al claim 1 , Sn claim 1 , W claim 1 , Ta claim 1 , Co claim 1 , Bi claim 1 , Cd claim 1 , Ti claim 1 , Zr claim 1 , Sb claim 1 , Mn claim 1 , Be claim 1 , Cr claim 1 , Ge claim 1 , V claim 1 , Ga claim 1 , Hf claim 1 , In claim 1 , Nb claim 1 , Rh claim 1 , Tl claim 1 , Ru claim 1 , Rh claim 1 , Pd claim 1 , Ag claim 1 , Os claim 1 , Ir claim 1 , Pt claim 1 , Au claim 1 , and combinations thereof.1418-. (canceled)19. The process of claim 1 , wherein the metal precursor is water insoluble.20. (canceled)21. The process of claim 1 ...

ALKYLENE OXIDE CATALYST AND USE THEREOF

A supported silver catalyst and use thereof in a process for producing an alkylene oxide, such as ethylene oxide, by the direct oxidation of an alkylene with oxygen or an oxygen-containing gas, wherein the catalyst provides improved stability and improved resilience to reactor upsets and timely recovery to substantially pre-upset levels of catalyst activity and/or efficiency. In some embodiments, the catalyst also exhibits improved activity. A catalyst capable of producing ethylene oxide at a selectivity of at least 87 percent while achieving a work rate of at least 184 kg/h/mat a temperature of no greater than 235° C. when operated in a process where the inlet feed to a reactor containing the catalyst comprises ethylene, oxygen, and carbon dioxide, wherein the concentration of carbon dioxide in the inlet feed is greater than or equal to 2 mole percent. 1. A continuous process for the production of alkylene oxide comprising:providing a supported silver catalyst prepared on an alumina-containing carrier, the carrier comprising greater than about 80 weight percent alpha-alumina and less than about 30 parts per million acid-leachable alkali metals by weight, the weight percent of the alumina and the concentration of the acid-leachable alkali metals being calculated on the weight of the carrier, wherein the acid-leachable alkali metals are selected from lithium, sodium, potassium, and mixtures thereof, the carrier having deposited thereon: (A) silver; (B) at least one first promoter selected from the group consisting of cesium, rubidium, and mixtures thereof; (C) at least one second promoter selected from the group consisting of sodium, lithium, and mixtures thereof; and (D) optionally, one or more additional solid promoters; wherein the deposited sodium, if employed, is present in a concentration from about 10 ppm to about 250 ppm, and wherein the deposited lithium, if employed, is present in a concentration from about 10 ppm to about 500 ppm by weight, the ...

Porous body precursors, shaped porous bodies, processes for making them, and end-use products based upon the same

The present invention provides porous body precursors and shaped porous bodies. Also included are catalysts and other end-use products based upon the shaped porous bodies and thus the porous body precursors. Finally, processes for making these are provided. The porous body precursors comprise a precursor alumina blend capable of enhancing one or more properties of a shaped porous body based thereupon. The need to employ modifiers to achieve a similar result may thus be substantially reduced, or even avoided, and cost savings are thus provided, as well as savings in time and equipment costs.

Catalyst Composition for Photocatalytic Reduction of Carbon Dioxide

The present subject matter describes a catalyst composition based on sodium tantalate, a modifying agent and at least one co-catalyst and the process of preparing the catalyst composition. The process for photocatalytic reduction of COcomprises re-acting carbon dioxide and alkaline water in the presence of catalyst composition that is irradiated with radiation with wavelength in the range of 300-700 nm to produce lower hydrocarbons and hydrocarbon oxygenates.

MULTI-LOBED POROUS CERAMIC BODY AND PROCESS FOR MAKING THE SAME

A carrier having at least three lobes, a first end, a second end, a wall between the ends and a non-uniform radius of transition at the intersection of an end and the wall is disclosed. A catalyst comprising the carrier, silver and promoters deposited on the carrier and useful for the epoxidation of olefins is also disclosed. A method for making the carrier, a method for making the catalyst and a process for epoxidation of an olefin with the catalyst are also disclosed. 1. A porous ceramic body , comprising: a first end; a second end; and a wall disposed between and intersecting said ends , said wall comprising at least three lobes and three valleys formed in the length of the wall , said lobes rounded at the intersection of said first end and said wall and said valleys not rounded at the intersection of said first end and said wall , each valley located between two of said lobes; wherein said ceramic body comprises a first radius located at the apex of a lobe and a second radius located at a nadir between two adjacent lobes and said first radius is larger than said second radius.2. The porous ceramic body of wherein said first radius is at least three times greater than said second radius. This application is a continuation of U.S. application Ser. No. 15/638,887, filed Jun. 30, 2017, granted on May 15, 2018 as U.S. Pat. No. 9,968,923, which is a continuation of U.S. application Ser. No. 14/677,090, filed Apr. 2, 2015, granted on Jul. 4, 2017 as U.S. Pat. No. 9,694,355, which is a continuation of U.S. application Ser. No. 14/524,226 filed Oct. 27, 2014, granted on Apr. 7, 2015 as U.S. Pat. No. 8,999,887, which is a divisional of U.S. application Ser. No. 13/316783 filed Dec. 12, 2011, granted on Oct. 28, 2014 as U.S. Pat. No. 8,871,677, which claims the benefit of U.S. Provisional Application No. 61/428,009 filed Dec. 29, 2010.This invention relates to porous ceramic bodies having a contoured shape that is particularly suitable for use as a carrier for ...

ETHYLENE EPOXIDATION CATALYSTS, ASSOCIATED METHODS OF MANUFACTURE, AND ASSOCIATED METHODS FOR THE PRODUCTION OF ETHYLENE OXIDE

An ethylene epoxidation catalyst is disclosed that comprises a fluoride-mineralized carrier having silver and a rhenium promoter deposited thereon, wherein the fluoride-mineralized carrier has: a total fluorine (TF) content less than 5000 ppm as measured by XRF, a water extractable fluorine (WEF) content greater than 45 ppm as measured by microwave extraction and ion specific electrode, and wherein the ratio of TF:WEF is between 10 and 110. Associated methods of manufacturing such catalysts and epoxidation methods using such catalysts are similarly provided. 1. An ethylene epoxidation catalyst comprising a fluoride-mineralized carrier having silver and a rhenium promoter deposited thereon , wherein the fluoride-mineralized carrier has:a total fluorine (TF) content less than 5000 ppm as measured by XRF,a water extractable fluorine (WEF) content greater than 45 ppm as measured by microwave extraction and ion specific electrode, andwherein the ratio of TF:WEF is between 10 and 110.2. The ethylene epoxidation catalyst of wherein the ratio of TF:WEF is greater than 15.3. The ethylene epoxidation catalyst of wherein the ratio of TF:WEF is less than 90.4. The ethylene epoxidation catalyst of wherein the ratio of TF:WEF is less than 70.5. The ethylene epoxidation catalyst of wherein the WEF is greater than 50 ppm.6. The ethylene epoxidation catalyst of wherein the WEF is greater than 100 ppm.7. The ethylene epoxidation catalyst of wherein the WEF is less than 300 ppm.8. The ethylene epoxidation catalyst of wherein the WEF is less than 200 ppm.9. The ethylene epoxidation catalyst of wherein the WEF is less than 180 ppm.10. The ethylene epoxidation catalyst of wherein the TF is greater than 2000 ppm.11. The ethylene epoxidation catalyst of wherein the TF is greater than 2500 ppm.12. The ethylene epoxidation catalyst of wherein the TF is less than 4500 ppm.13. The ethylene epoxidation catalyst of wherein the fluoride-mineralized carrier has a water absorption of at least 50 ...

Process of preparing 4-methyl-3-decen-5-one

A method of preparing 4-methyl-3-decen-5-one. The method includes the step of oxidizing 4-methyl-3-decen-5-ol in the presence of (i) oxygen and (ii) a metal catalyst, wherein the metal catalyst contains a catalytic metal deposited on nanoparticle support.

HIGH CONCENTRATION SILVER SOLUTIONS FOR ETHYLENE OXIDE CATALYST PREPARATION

A silver impregnation solution comprising: (i) silver ions, (ii) a silver concentration enhancer selected from at least one ammonium salt having an anionic component that is thermally decomposable; or at least one amino acid, or a combination thereof, (iii) at least one organic amine; and (iv) water; wherein said components (i)-(iii) are dissolved in said impregnation solution, and oxalic acid may or may not be included. The silver impregnation solution can achieve significantly higher silver concentrations, including at least or above 33, 34, or 35 wt %. Methods for producing a silver catalyst by silver impregnation of a refractory support followed by calcination are also described. The resulting silver catalysts possess high silver loadings of typically at least 17, 18, or 19 wt %. 1. A silver impregnation solution comprising:(i) silver ions,(ii) a silver concentration enhancer selected from at least one ammonium salt having an anionic component that is thermally decomposable, or at least one amino acid, or a combination thereof;(iii) at least one organic amine; and(iv) water;wherein said components (i)-(iii) are dissolved in said impregnation solution.2. The silver impregnation solution of claim 1 , further comprising oxalic acid.3. The silver impregnation solution of claim 1 , wherein oxalic acid is excluded.4. The silver impregnation solution of claim 1 , wherein said silver concentration enhancer is at least one ammonium salt having an anionic component that is thermally decomposable.5. The silver impregnation solution of claim 4 , wherein said ammonium salt possesses a carbon-containing anion.6. The silver impregnation solution of claim 4 , wherein said ammonium salt is selected from ammonium carboxylates claim 4 , ammonium carbonate claim 4 , ammonium bicarbonate claim 4 , ammonium nitrate claim 4 , ammonium phosphate claim 4 , diammonium hydrogen phosphate claim 4 , and ammonium dihydrogen phosphate.7. The silver impregnation solution of claim 4 , wherein ...

ZPGM Catalyst Systems and Methods of Making Same

Described are ZPGM catalyst systems which are free of any platinum group metals for reducing emissions of carbon monoxide, nitrogen oxides, and hydrocarbons in exhaust streams. ZPGM catalyst systems may include a substrate, a washcoat, and an overcoat. Both manganese and copper may be provided as catalysts, with copper in the overcoat and manganese preferably in the washcoat. The manganese can also be provided in the overcoat, but when in the overcoat should be stabilized for greatest effectiveness. A carrier material oxide may be included in both washcoat and overcoat. It has been discovered that the ZPGM catalyst systems are effective even without OSM in washcoat and the ZPGM catalysts within washcoat and overcoat may be best prepared by co-milling an aqueous slurry that includes manganese with alumina for the washcoat and copper and cerium salts with alumina and an OSM, for overcoat prior to overcoating and heat treating. Disclosed ZPGM TWC systems in catalytic converters may be employed to decrease the pollution caused by exhaust from various sources, such as automobiles, utility plants, processing and manufacturing plants, airplanes, trains, all-terrain vehicles, boats, mining equipment, and other engine-equipped machines.

Firing (Calcination) Process and Method Related to Metallic Substrates Coated with ZPGM Catalyst

The effect of firing (calcination) cycle on metallic substrates in ZPGM catalyst systems is disclosed. ZPGM catalyst samples with washcoat and overcoat are separately fired in a normal, slow and fast firing cycles to determine the optimal firing cycling that may provide an enhanced catalyst performance, as well as the minimal loss of washcoat adhesion from the samples.

MULTIMETALLIC MIXED OXIDES, ITS PREPARATION AND USE FOR THE OXIDATIVE DEHYDROGENATION OF ETHANE FOR PRODUCING ETHYLENE

A layered multimetallic mixed oxide (LMMO) is characterized by one or more diffraction peaks at 5<2θ<15, preferably between 10<2θ<15. The catalysts can be represented by the general formula: 1. A layered multimetallic mixed oxide catalyst adapted for the oxidative dehydrogenation of ethane to ethylene , said catalyst having the formula{'br': None, 'sub': 'δ', 'M1M2M3O'}wherein:M1 is selected from the group of Ag, Au, Zn, Sn, Rh, Pd, Pt, Cu, Ni, Fe, Co, an alkaline metal, an alkaline earth metal, a rare earth metal, and mixtures thereof;M2 is selected from the group of Ti, Hf, Zr, Sn, Bi, Sb, V, Nb, Ta and P, and mixtures thereof;M3 is selected from the group of Mo, W and Cr, and mixtures thereof;where δ depends on the amount, oxidation state and/or valence of the components;and where the catalyst exhibits at least one X-ray diffraction peak between 5<2θ<15.2. The catalyst of claim 1 , whereinsaid catalyst exhibits at least one X-ray diffraction pattern selected from the group consisting of monoclinic lattice of silver vanadium molybdenum oxide corresponding to ICDD-PDF 04-002-4830, or cesium vanadium molybdenum oxide corresponding to ICDD-PDF 00-030-0381, or monoclinic sodium vanadium molybdenum oxide corresponding to ICDD-PDF 04-011-9693, or monoclinic lithium vanadium molybdenum oxide corresponding to ICDD-PDF 04-006-7234, or orthorhombic calcium vanadium molybdenum oxide corresponding to ICDD-PDF 04-013-4035.3. The catalyst of claim 1 , whereinsaid catalyst exhibits at least one X-ray diffraction peak between 10<2θ<15.4. The catalyst of claim 1 , wherein said catalyst is prepared by a process comprising the steps of{'sub': 1', '2', '3, 'mixing metallic precursors of M, Mand Mto form a precursor mixture,'}hydrothermally treating the precursor mixture to obtain a homogeneous solid mixture, andthermally treating the homogeneous solid mixture to activate the solid mixture and obtain said catalyst.5. The catalyst of claim 1 , whereinsaid precursors are mixed by ...

PROPYLENE DIRECT OXIDATION REACTION CATALYST, METHOD FOR PREPARING SAME, AND METHOD FOR PREPARING PROPYLENE OXIDE THROUGH PROPYLENE DIRECT OXIDATION REACTION USING SAME

Disclosed is a propylene direct oxidation reaction catalyst capable of preparing a propylene oxide from propylene and oxygen at a higher yield than catalysts prepared by conventional methods, by applying a specific transition metal oxide promoter in preparation of a catalyst containing silver, a transition metal oxide promoter and a carrier through a slurry process. The present invention provides a propylene direct oxidation reaction catalyst, which is a supported silver catalyst used for preparing a propylene oxide from the propylene direct oxidation reaction, the catalyst including a molybdenum oxide and a tungsten oxide as a catalyst promoter. 1. A propylene direct oxidation reaction catalyst , which is a supported silver catalyst used for preparing a propylene oxide from a propylene direct oxidation reaction , the catalyst comprising , as a catalyst promoter , a molybdenum oxide (MoO) and a tungsten oxide (WO).2. The propylene direct oxidation reaction catalyst of claim 1 , wherein the silver is included in an amount of 5-30% by weight with respect to the entire catalyst.3. The propylene direct oxidation reaction catalyst of claim 1 , wherein the promoter is included in an amount of 1-20% by weight with respect to the entire catalyst.4. The propylene direct oxidation reaction catalyst of claim 1 , wherein the molybdenum oxide to the tungsten oxide is included claim 1 , by weight percentage claim 1 , at a ratio of 1:99 to 99:1.5. The propylene direct oxidation reaction catalyst of claim 1 , wherein a carrier used for the support is a zirconium oxide.6. The propylene direct oxidation reaction catalyst of claim 5 , wherein the zirconium oxide is prepared according to a method comprising the steps of:(i) dissolving a zirconium oxide precursor in a solvent to prepare a zirconium oxide precursor solution;(ii) adding a basic aqueous solution to the zirconium oxide precursor solution;(iii) stirring the solution prepared in the step (ii) and then filtering to obtain a ...

HYDROCRACKING CATALYST, METHOD FOR PRODUCING SAME, AND METHOD FOR PRODUCING HYDROXY COMPOUND USING SAID CATALYST

The present invention provides a hydrocracking catalyst obtainable by mixing a metal compound (A) including any one metal of Groups 3 to 11 of the Periodic Table, a compound (B) including at least one compound selected from the group consisting of a ruthenium oxide compound (B1) and a high-valence compound (B2) including any metal of Groups 8 to 11 of the Periodic Table, and a metal oxide (C) including a metal of Group 5, Group 6 or Group 7 of the Periodic Table, and conducting reduction treatment. 1. A hydrocracking catalyst obtainable by conducting a reduction treatment after mixing;a metal compound (A) including any one metal of Groups 3 to 11 of the Periodic Table,a compound (B) including at least one compound selected from the group consisting of a ruthenium oxide compound (B1) and a high-valence compound (B2) including any metal of Groups 8 to 11 of the Periodic Table, anda metal oxide (C) including a metal of Group 5, Group 6 or Group 7 of the Periodic Table.2. The hydrocracking catalyst according to claim 1 , wherein the compound (B) includes the ruthenium oxide compound (B1) claim 1 , the ruthenium oxide compound (B1) being at least one compound selected from the group consisting of ruthenium oxide and perruthenic acid salts.3. The hydrocracking catalyst according to claim 1 , wherein the compound (B) includes the high-valence compound (B2) claim 1 , the high-valence compound (B2) being a hydroxy metal or a hydroxy metallic acid salt.4. The hydrocracking catalyst according to claim 1 , wherein the metal oxide (C) is at least one compound selected from the group consisting of metal oxides and metallic acid peroxide salts.5. The hydrocracking catalyst according to claim 1 , wherein the reduction treatment is conducted in the presence of hydrogen.6. A method for producing a hydrocracking catalyst claim 1 , comprising a step of:mixing a metal compound (A) including any one metal of Groups 3 to 11 of the Periodic Table, a compound (B) including at least one ...

STABILIZED PRODUCTION OF 1,3-BUTADIENE IN THE PRESENCE OF A TANTALUM OXIDE DOPED BY AN ALDOLIZING ELEMENT

The invention relates to a catalyst that comprises at least the tantalum element, at least an aldolizing element and at least a mesoporous oxide matrix, with the tantalum mass being between 0.1 and 30% of the mesoporous oxide matrix mass, the mass of the at least one aldolizing element being between 0.02 and 4% of the mesoporous oxide matrix mass, and use thereof. 1. Catalyst that comprises at least the tantalum element , at least an aldolizing element that is selected from the group that consists of magnesium , calcium , barium , cerium and tin and mixtures thereof , and at least one mesoporous oxide matrix that comprises at least one oxide of an element X that is selected from among silicon , titanium and mixtures thereof , with the tantalum element mass being between 0.1 and 30% of the mesoporous oxide matrix mass , and the aldolizing element mass being between 0.02 and 4% of the mesoporous oxide matrix mass.2. Catalyst according to claim 1 , in which said aldolizing element is selected from the group that consists of calcium and barium and mixtures thereof.3. Catalyst according to claim 1 , also comprising at least one element that is selected from the group that consists of the elements of groups 1 claim 1 , 4 and 5 of the periodic table claim 1 , with the mass of said element representing between 0.01 and 5% of the mesoporous oxide matrix mass.4. Catalyst according to claim 3 , also comprising at least one element that is selected from the group that consists of the element Cs and the element Nb and mixtures thereof claim 3 , with the mass of said element representing between 0.01 and 5% of the mesoporous oxide matrix mass.5. Catalyst according to claim 1 , in which said oxide matrix is mesostructured.6. Catalyst according to claim 1 , in which said mesoporous oxide matrix comprises a silicon oxide that has a specific surface area of 100 to 1 claim 1 ,200 m/g claim 1 , a mesopore volume of between 0.2 and 1.8 ml/g claim 1 , and a mesopore diameter of between 4 ...

METHOD OF FORMULATING ALKYLENE OXIDE CATALYST IN RELATION TO CATALYST REFERENCE PROPERTIES

Methods of preparing a second high-efficiency, rhenium-promoted silver catalyst for producing alkylene oxide from an alkylene based on a first catalyst are disclosed and described. In accordance with the disclosed methods, the first and second catalysts include at least one promoter that includes a rhenium promoter. The target catalyst concentrations of one or more promoters of the at least one promoter on the second catalyst are determined based on the values of a catalyst reference property for the two catalysts and the concentration of the one or more promoters of the at least one promoter on the first catalyst. Suitable catalyst reference properties include carrier specific surface area and silver specific surface area. Reaction systems utilizing the first and second catalysts are also described. 1. A reaction system for producing alkylene oxide from a feed gas comprising an alkylene and oxygen , the reaction system comprising at least a first high-efficiency alkylene oxide catalyst and a second high-efficiency alkylene oxide catalyst , wherein:the first catalyst comprises a carrier, silver, and a promoting amount of at least one promoter, the at least one promoter comprising a rhenium promoter;the second catalyst comprises a carrier, silver, and a promoting amount of at least one promoter, the at least one promoter comprising a rhenium promoter, such that the respective ratios between the respective concentrations of one or more promoters of the at least one promoter on the second catalyst and the respective concentrations of the one or more promoters of the at least one promoter on the first catalyst are respective monotonic functions of a catalyst reference property, wherein the monotonic functions are not linear proportional functions.2. The reaction system of claim 1 , wherein the monotonic function is a linear function.3. The reaction system of claim 1 , wherein the monotonic function is a spline consisting of two mathematical formulas claim 1 , and the ...

CATALYST FOR PRODUCTION OF HYDROGEN AND PROCESS FOR PRODUCING HYDROGEN USING THE CATALYST, AND CATALYST FOR COMBUSTION OF AMMONIA, PROCESS FOR PRODUCING THE CATALYST AND PROCESS FOR COMBUSTING AMMONIA USING THE CATALYST

Disclosed is a catalyst which can be used in the process for producing hydrogen by decomposing ammonia, can generate heat efficiently in the interior of a reactor without requiring excessive heating the reactor externally, and can decompose ammonia efficiently and steadily by utilizing the heat to produce hydrogen. Also disclosed is a technique for producing hydrogen by decomposing ammonia efficiently utilizing the catalyst. Specifically disclosed is a catalyst for use in the production of hydrogen, which is characterized by comprising an ammonia-combusting catalytic component and an ammonia-decomposing catalytic component. Also specifically disclosed is a catalyst for use in the production of hydrogen, which is characterized by comprising at least one metal element selected from the group consisting of cobalt, iron, nickel and molybdenum. 133-. (canceled)34. A process for producing hydrogen from a gas containing ammonia and oxygen by using a catalyst for production of hydrogen ,wherein the catalyst for production of hydrogen comprises at least one metal element selected from the group consisting of cobalt, iron, and molybdenum,wherein the catalyst for production of hydrogen further comprises at least one kind of metal oxides selected from the group consisting of alumina, silica, zirconia, titania, ceria, lanthanum oxide, magnesium oxide, calcium oxide, barium oxide and strontium oxide.35. The process for producing hydrogen according to claim 34 , wherein at least one metal element consists of cobalt.36. The process for producing hydrogen according to claim 34 , the catalyst for production of hydrogen further comprises an alkali metal.37. The process for producing hydrogen according to claim 34 , the catalyst for production of hydrogen further comprises an alkaline earth metal.38. The process for producing hydrogen according to claim 34 , the catalyst for production of hydrogen further comprises rare earth element.39. The process for producing hydrogen according to ...

PHOTOCATALYST, AND METHOD FOR PRODUCING PHOTOCATALYST

A photocatalyst, represented by the following general formula (1): 1. A photocatalyst , represented by the following general formula (1):{'br': None, 'sub': 4', '6', '2, 'X(VO)(OH)\u2003\u2003General Formula (1)'}{'sub': a1', 'b1', 'a2', 'b2', 'c2, 'wherein X represents ZTior ZTiAg(where Z is Ca or Sr; a1 is 7.0 to 9.5; b1 is 0.5 to 3.0; a2 is 7.0 to 9.5; b2 is 0.4 to 1.5; c2 is 0.1 to 2.0; a1+b1 is 9.0 to 10.0; and a2+b2+c2 is 9.0 to 10.0) in the general formula (1).'}2. A method for producing the photocatalyst according to claim 1 , the method comprising:blending a vanadium-containing compound, and a strontium ion-containing compound or a calcium ion-containing compound or both thereof, and a titanium ion-containing compound together.3. The method according to claim 2 , wherein a silver ion-containing compound is blended.4. The method according to claim 2 , wherein the vanadium-containing compound is vanadium pentoxide.5. The method according to claim 3 , wherein the vanadium-containing compound is vanadium pentoxide. This application is a continuation application of International Application PCT/JP2012/079678 filed on Nov. 15, 2012 and designated the U.S., the entire contents of which are incorporated herein by reference.The embodiments discussed herein relate to a photocatalyst, and a method for producing a photocatalyst.Recently, photocatalystic activities of some of semiconductor materials, such as titanium oxide (TiO), which exhibit an oxidation decomposition function, an antibacterial action, and an antifouling function, have been attracted attentions. In the semiconductor material having the photocatalystic activities as above, typically, electrons present on the valence band are sifted to the conduction band, as light having the energy corresponding to a band gap between the valence band and the conduction band is absorbed. The electrons sifted to the conduction band have characteristics that the electrons move to a material adsorbed on a surface of the ...

SUPPORTED GOLD NANOPARTICLE CATALYST AND METHOD FOR PRODUCING SAME

The main problem addressed by the present invention is to provide a supported gold nanoparticle catalyst and having high catalytic activity. The above-mentioned problem can be solved by a supported catalyst comprising: a carrier having a reducing power; and gold nanoparticle with an average particle diameter of 100 nm or less, and preferably with an average particle diameters of 5 nm or less supported on the carrier. The present invention also provides a method for producing the supported catalyst. 1. A supported catalyst comprising: a carrier having a reducing power; and gold nanoparticles with an average particle size of 100 nm or less supported on the carrier.2. The supported catalyst according to claim 1 , wherein the gold nanoparticles have an average particle size of 10 nm or less.3. The supported catalyst according to claim 1 , wherein the carrier having a reducing power is a porous material.4. The supported catalyst according to claim 2 , wherein the carrier having a reducing power is a porous material.5. The supported catalyst according to claim 1 , wherein the carrier having a reducing power is a carbon material or a metal oxide.6. The supported catalyst according to claim 2 , wherein the carrier having a reducing power is a carbon material or a metal oxide.7. The supported catalyst according to claim 3 , wherein the carrier having a reducing power is a carbon material or a metal oxide.8. The supported catalyst according to claim 4 , wherein the carrier having a reducing power is a carbon material or a metal oxide.9. The supported catalyst according to claim 1 , wherein the carrier having a reducing power is at least one selected from the group consisting of powdered activated carbon claim 1 , fibrous activated carbon claim 1 , titanium oxide claim 1 , cobalt oxide claim 1 , and manganese oxide.10. A method for producing a supported catalyst comprising supported gold nanoparticles with an average particle size of 100 nm or less claim 1 , the method ...

CATALYST COMPRISING SILVER OXIDE AND CALCIUM CARBONATE, METHOD FOR THE MANUFACTURE OF THE CATALYST AND ITS USE FOR THE DESTRUCTION OF STERILANT

Disclosed are catalysts, and in particular catalysts including silver oxide and calcium carbonate. The catalysts may be used in the destruction of sterilants such as ozone and hydrogen peroxide. The present inventors have found that including calcium carbonate in catalysts for the destruction of sterilant substances such as ozone and peroxide enhances the performance of the catalyst and increases its lifetime. The beneficial effect of including calcium carbonate is particularly observed for catalysts including silver oxide, such as those including silver oxide and titanium dioxide. 1. A catalyst for the destruction of sterilant , the catalyst comprising silver oxide and calcium carbonate.2. A catalyst according to claim 1 , further comprising titanium dioxide.3. A catalyst according to claim 1 , wherein the catalyst contains at least 50 wt % of silver oxide.4. A catalyst according to claim 1 , wherein the catalyst comprises MnO claim 1 , and wherein the catalyst contains at least 60 wt % of MnOand silver oxide taken together.5. A catalyst according to claim 1 , wherein the catalyst contains at least 5 wt % of calcium carbonate.6. A catalyst according to claim 1 , wherein the catalyst contains at least 5 wt % of titanium dioxide.7. A catalyst according to wherein the catalyst contains less than 5 wt % of residual thickener such as xanthan gum.8. A catalyst body comprising the catalyst as defined in supported on a substrate.9. A catalyst body according to wherein the substrate is a honeycomb substrate.10. A method for the manufacture of a catalyst as defined in claim 1 , comprising combining silver oxide claim 1 , calcium carbonate and optionally further components to form the catalyst.11. A method according to claim 10 , further comprising depositing the catalyst on a substrate claim 10 , e.g. by wash coating.12. A method for destruction of sterilant claim 1 , comprising applying an effective amount of the catalyst of .13. A method for sterilising an enclosed space ...

METHOD OF FORMULATING ALKYLENE OXIDE CATALYST IN RELATION TO CATALYST REFERENCE PROPERTIES

Methods of preparing a second high-efficiency, rhenium-promoted silver catalyst for producing alkylene oxide from an alkylene based on a first catalyst are disclosed and described. In accordance with the disclosed methods, the first and second catalysts include at least one promoter that includes a rhenium promoter. The target catalyst concentrations of one or more promoters of the at least one promoter on the second catalyst are determined based on the values of a catalyst reference property for the two catalysts and the concentration of the one or more promoters of the at least one promoter on the first catalyst. Suitable catalyst reference properties include carrier specific surface area and silver specific surface area. Reaction systems utilizing the first and second catalysts are also described. 1. A method for making a second high efficiency , alkylene oxide catalyst based on the properties of a first high efficiency alkylene oxide catalyst , wherein the first high efficiency alkylene oxide catalyst comprises a carrier , silver , a promoting amount of at least one promoter , the at least one promoter comprising a rhenium promoter , the method comprising:determining a respective target concentration value on the second catalyst for one or more of the at least one promoter based on values of a catalyst reference property for the first and second catalysts and a respective concentration value of the one or more of the at least one promoter on the first catalyst, wherein the step of determining the respective target concentration value on the second catalyst for one or more of the at least one promoter comprises determining the respective target concentration value in accordance with a monotonic relationship between the target concentration value and the catalyst reference property, and the monotonic relationship is not a linear proportional relationship; andpreparing the second high efficiency catalyst based on the respective target concentration value on the ...

Hydrophilic member and hydrophilic product using the same

In one embodiment, a hydrophilic member includes a substrate having a surface and particles existing at least on the surface of the substrate. The particles are constituted of at least one selected from tungsten oxide particles and tungsten oxide composite particles. The substrate surface on which the particles exist has an arithmetic mean roughness Ra in the range of 1 nm to 1000 nm with a reference length of 100 μm, and exhibits hydrophilicity independently of light.

SILVER CATALYSTS WITH IMPROVED SIZE AND DISTRIBUTION DENSITY OF SILVER PARTICLES

A silver-based ethylene epoxidation catalyst is provided that exhibits improved performance, i.e., selectivity and activity decline. The catalyst that exhibits the improved performance includes greater than about 20% by weight of silver disposed on an alpha-alumina carrier, and a promoting amount of one or more promoters disposed on the alpha-alumina carrier. The silver is present on the alpha-alumina carrier as silver particles having a diameter of greater than about 150 nm and a distribution density of about 20 particles per 1 square micron or less. 1. A silver-based ethylene epoxidation catalyst comprising:greater than about 20% by weight of silver disposed on an alpha-alumina carrier; anda promoting amount of one or more promoters disposed on said alpha-alumina carrier, wherein said silver is present on said alpha-alumina carrier as silver particles, said silver particles having a diameter of greater than about 150 nm and having a distribution density of about 20 particles per 1 square micron or less.2. The silver-based ethylene epoxidation catalyst of claim 1 , wherein said one or more promoters comprise Group IIA metal promoters claim 1 , one or more transition metals claim 1 , one or more alkali metals or any combination thereof.3. The silver-based ethylene epoxidation catalyst of claim 2 , wherein said one or more transition metals are selected from the group consisting of Groups 4-10 of the Periodic Table of the Elements.4. The silver-based ethylene epoxidation catalyst of claim 3 , wherein said one or more transition metals are selected from the group consisting of molybdenum claim 3 , rhenium claim 3 , tungsten claim 3 , chromium claim 3 , titanium claim 3 , hafnium claim 3 , zirconium claim 3 , vanadium claim 3 , thorium claim 3 , tantalum claim 3 , and niobium.5. The silver-based ethylene epoxidation catalyst of claim 2 , wherein said one or more transition metals comprise rhenium claim 2 , molybdenum claim 2 , tungsten claim 2 , or any combination ...

Perovskite and Mullite-like Structure Catalysts for Diesel Oxidation and Method of Making Same

Disclosed here are material formulations of use in the conversion of exhaust gases. A catalyst is formed by using a perovskite structure having the general formula ABO3 or a mullite structure having the general formula of AB2O5 where components “A” and “B” may be any suitable non-platinum group metals. Suitable materials may include Yttrium, Lanthanum, Silver, Manganese and formulations thereof.

Carrier for ethylene oxide catalysts

A carrier for an ethylene epoxidation catalyst is provided that includes an alumina first component and a mixed metal oxide of alumina second component. The mixed metal oxide of alumina second component comprises a corundum lattice structure having a plurality of O—Al—O bonds, wherein an Al atom of at least one O—Al—O bond of the plurality of O—Al—O bonds, but not all of the plurality of O—Al—O bonds, is replaced with a divalent or trivalent transition metal selected from the group consisting of scandium (Sc), titanium (Ti), vanadium (V), chromium (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni) copper (Cu), and zinc (Zn). A catalyst containing the carrier, as well as a process for the epoxidation of ethylene using the catalyst are also disclosed.

CATALYTIC CONVERSION OF BIO-MASS DERIVABLE ALIPHATIC ALCOHOLS TO VALUABLE ALKENES OR OXYGENATES

Disclosed is a catalyst system, its methods of preparation and its use for producing, among others, alkenes and/or saturated or unsaturated oxygenates and, which include at least one of an aldehyde and an acid (such as propyl aldehyde, acrolein, acrylic acid, isobutyl aldehyde, methacrolein, methacrylic acid), comprising subjecting the corresponding C3 to C5 aliphatic alcohols that are derivable from biomass, such as, propanols, propanediols, and isobutanol, to a vapor phase process over the catalytic system described herein in the presence of a gas mixture of oxygen, air or nitrogen and/or other suitable diluting gas. In the case where a C3 aliphatic alcohol (1-propanol, 2-propanol, or 1,2-propanediol or 1,3-propanediol) or a mixture thereof is subjected to a vapor phase catalytic process over the said catalytic system in the presence of air or oxygen, and a co-fed gas, such as nitrogen or other diluting gas, the product is at least one of propylene, propyl aldehyde, acrolein and acrylic acid. In the case where isobutanol is subjected to such a process, the product is at least one of isobutylene, isobutyl aldehyde, methacrolein and methacrylic acid. The catalyst system comprises a single catalytic zone or multi-catalytic zones, in each of which the composition of the co-feed and other reaction parameter can be independently controlled. 1. A process for producing at least one of an alkene , an aldehyde , and an unsaturated carboxylic acid , comprising subjecting a feed gas mixture of an aliphatic alcohol and one or more co-feed gases , which comprises air or oxygen or nitrogen , and , optionally , one or more other suitable diluting gases , to a vapor phase reaction in a heated reactor in the presence of a catalyst system having a single or multiple catalytic zone(s) , each of which independently comprising a compound having the formula ASbXYZOwherein A is Mo or W , X is an element selected from the group of Ca , Ce , Co , Fe , Ga , Mg , Ni , Sn , V , W and Zn , Y ...

METHOD FOR PRODUCING MULTISUBSTITUTED BIPHENYL COMPOUND AND SOLID CATALYST TO BE USED THEREIN

A method for producing a multisubstituted biphenyl compound is represented by the following formula (2), including a step of coupling a substituted benzene compound represented by the following formula (1) in the presence of a solid catalyst with gold immobilized onto a support. 3. The method for producing the multisubstituted biphenyl compound according to claim 1 , wherein the R in the formulae (1) and (2) is an alkyl group claim 1 , a carboxyl group or an alkoxycarbonyl group.4. The method for producing the multisubstituted biphenyl compound according to claim 2 , wherein the R in the formulae (1)′ and (2)′ is an alkyl group claim 2 , a carboxyl group or an alkoxycarbonyl group.6. The method for producing the multisubstituted biphenyl compound according to claim 1 , wherein the support is a metal oxide.7. The method for producing the multisubstituted biphenyl compound according to claim 6 , wherein the metal oxide is an oxide of at least one metal selected from the group consisting of cobalt (Co) claim 6 , manganese (Mn) claim 6 , iron (Fe) claim 6 , cerium (Ce) claim 6 , zirconium (Zr) claim 6 , nickel (Ni) claim 6 , titanium (Ti) claim 6 , lanthanum (La) claim 6 , silicon (Si) and aluminum (Al).8. The method for producing the multisubstituted biphenyl compound according to claim 6 , wherein the metal oxide is an oxide of at least one metal selected from the group consisting of manganese (Mn) claim 6 , cobalt (Co) and zirconium (Zr).9. The method for producing the multisubstituted biphenyl compound according to claim 1 , wherein a gold particle having an average particle diameter of 0.5 to 10 nm are immobilized onto the support.10. The method for producing the multisubstituted biphenyl compound according to claim 1 , wherein claim 1 , in the step claim 1 , the substituted benzene compound represented by the formula (1) is coupled further in the presence of a solvent claim 1 , and the solvent is an organic carboxylic acid.11. The method for producing the ...

Systems and Methods for Providing ZPGM Perovskite Catalyst for Diesel Oxidation Applications

Diesel oxidation ZPGM catalyst systems using YAgMnOperovskite are disclosed. The ZPGM catalyst system compositions may include YAgMnOperovskite in impregnation component and at least one carrier material oxide in washcoat. The ZPGM catalyst system compositions may also include YAgMnOperovskite co-precipitated in a carrier material oxide as washcoat. The catalyst activity is measured with an inlet gas mixture containing diesel exhaust composition and characterized according to performance in NO oxidation, NOproduction, NO storage capability and diesel oxidation applications. 1. A zero platinum group metal (ZPGM) catalyst system , comprising:a substrate; anda washcoat suitable for deposition on the substrate, comprising at least one oxide solid selected from the group consisting of at least one carrier material oxide, and at least one ZPGM catalyst; andan impregnation layer;{'sub': '3', 'wherein at least one of the at least one ZPGM catalyst comprises at least one perovskite structured compound having the formula ABO, wherein each of A and B is selected from the group consisting of at least one of yttrium, silver, manganese, lanthanum, cerium, iron, praseodymium, neodymium, strontium, cadmium, cobalt, scandium, copper, niobium, tungsten, and combinations thereof.'}2. The ZPGM catalyst system of claim 1 , wherein the at least one perovskite structured compound has a general cation formula of AaBbO claim 1 , wherein x is from 0 to 1.3. The ZPGM catalyst system of claim 1 , wherein the at least one carrier material oxide is selected from the group consisting of ZrO claim 1 , doped ZrOwith lanthanide group metals claim 1 , NbO claim 1 , NbO—ZrO claim 1 , alumina claim 1 , doped alumina claim 1 , TiO claim 1 , doped TiOand mixtures thereof.4. The ZPGM catalyst system of claim 1 , wherein the at least one perovskite structured compound is of the general formula YAgMnO claim 1 , wherein x is from 0 to 1.5. The ZPGM catalyst system of claim 4 , wherein the at least one ...

PROCESS FOR PREPARATION OF AG-W OXIDE CATALYST FOR THE SELECTIVE CONVERSION OF PROPROPYLENE TO PROPYLENE OXIDE WITH MOLECULAR OXYGEN

The present invention provides a process for preparation of Ag-W oxide catalyst for the direct and selective conversion of propylene to propylene oxide. The process provides a direct single step selective vapour phase oxidation of propylene to propylene oxide using molecular oxygen over Ag-W oxide catalysts. The process provides propylene conversion of 10-50% and selectivity for propylene oxide up to 100%. 1. A process for the preparation of Ag—W oxide catalyst , said process comprising the steps of:{'sub': 3', '2', '2, 'a. mixing a salt of Ag, WO.2HO, a surfactant, a reducing agent hydrazine and HO to obtain a gel;'}b. mixing gel as obtained in step (a) with constant stirring for 2-6 h at room temperature ranging between 25-35° C.;c. filtering the gel as obtained in step (b) and washing with excess water and dried in an oven with temperature ranging between 100-120° C. for a period ranging between 6-18 hours; andd. calcining the dried product as obtained in step (c) at temperature ranging between 300-750° C. for a period ranging between 4-10 h to obtain Ag—W oxide catalyst.2. The process as claimed in claim 1 , wherein weight ratio of Ag to W in step (a) is in the range of 0.03 to 0.5.3. The process as claimed in claim 1 , wherein molar ratio of Ag to CTAB in step (a) is in the range of 0.75-1.3.4. The process as claimed in claim 1 , wherein molar ratio of Ag to hydrazine in step (a) is in the range of 0.75-1.3.5. A single step process for selective oxidation (epoxidation) of propylene to propylene oxide using Ag—W oxide catalyst as obtained by the process as claimed in claim 1 , wherein the said process comprising the steps of reacting propylene with oxygen in the presence of Ag—W- oxide catalyst in the pressure range of 1—5 Mpa claim 1 , at a temperature ranging between 150-450° C. with a weight hourly space velocity (WHSV claim 1 , feed/g catalyst/hour) in the range of 2000 to 3000011 hfor a period in the range of 1-20 hours to obtain propylene oxide.6. The ...

Methods for producing epoxidation catalysts and epoxidation methods utilizing these

Methods are provided for producing epoxidation catalysts. The present methods are able to produce catalysts having the desired loading levels of catalytic species at a lower vacuum level (having a higher minimum residual pressure) than previously appreciated by the art, thereby providing equipment cost and time savings.

CATALYSTS UTILIZING CARBON DIOXIDE FOR THE EPOXIDATION OF OLEFINS

The present disclosure provides mixed molybdenum oxide catalysts, methods for preparing epoxides from olefins and CO2 using them, and methods of making the mixed molybdenum oxide catalysts by impregnation or co-precipitation. In a preferred embodiment, the mixed molybdenum oxide catalysts are silver/molybdenum oxide catalysts, ruthenium/molybdenum oxide catalysts, or a combination thereof. 1. A method of catalyzing the abstraction of oxygen from carbon dioxide (CO) to form carbon monoxide (CO) comprising contacting a mixed molybdenum oxide catalyst , which comprises a silver oxide , a ruthenium oxide , or a mixture thereof , with an appropriate COfeed stream under suitable temperature and pressure conditions so as to abstract oxygen from the COto form CO.2. The method of wherein the mixed molybdenum oxide catalyst claim 1 , further comprises a Group IA or Group IIA element promoter.3. The method of wherein the mixed molybdenum oxide catalyst claim 1 , further comprises a support.4. The method of wherein the mixed molybdenum oxide catalyst claim 3 , wherein the support is AlO claim 3 , SiO claim 3 , TiO claim 3 , ZrO claim 3 , AlPO claim 3 , carbon claim 3 , graphite claim 3 , or a mixture thereof.5. The method of wherein the mixed molybdenum oxide catalyst claim 1 , wherein the mixed catalyst is a mixed silver/molybdenum oxide catalyst.6. The method of wherein the mixed silver/molybdenum oxide catalyst claim 5 , wherein the molar ratio of AgO to MoOis in the range of about 1.0 to 0.05 to about 1.0 to 20.0.7. The method of wherein the mixed silver/molybdenum oxide catalyst claim 6 , wherein the molar ratio of AgO to MoOis in the range of about 1.0 to 0.1 to about 1.0 to 10.0.8. The method of wherein the mixed silver/molybdenum oxide catalyst claim 7 , wherein the molar ratio of AgO to MoOis in the range of about 1.0 to 0.5 to about 1.0 to 5.0.9. The method of wherein the mixed silver/molybdenum oxide catalyst claim 8 , wherein the molar ratio of AgO to MoOis in the ...

CATALYST FOR PRODUCING ETHYLENE OXIDE BY GAS-PHASE OXIDATION

A shaped catalyst body for producing ethylene oxide by gas-phase oxidation of ethylene, comprising silver deposited on a porous refractory support, the shaped catalyst body having a first face side surface, a second face side surface and a circumferential surface, characterized by a content of at least 20 wt.-% of silver, relative to the total weight of the shaped catalyst body; a multilobe structure; a plurality of passageways extending from the first face side surface to the second face side surface, outer passageways being arranged around a central passageway with one outer passageway being assigned to each lobe, wherein neighboring outer passageways are arranged essentially equidistantly to each other and the outer passageways are arranged essentially equidistantly to the central passageway; a minimum wall thickness A between two neighboring passageways in the range of 0.6 to 1.3 mm; a minimum wall thickness B between each outer passageway and the circumferential surface in the range of 1.1 to 1.8 mm; and a BET surface area in the range of 1.6 to 3.0 m/g. The shaped catalyst bodies allow for a favorable balance between mechanical stability, pressure drop and selectivity. The invention also relates to a process for producing ethylene oxide by gas-phase oxidation of ethylene, comprising reacting ethylene and oxygen in the presence of a shaped catalyst body as defined above. The invention further relates to a process for preparing a shaped catalyst body as above, comprising i) impregnating a refractory support having a BET surface area in the range of 1.4 to 2.5 m/g with a silver impregnation solution; and ii) subjecting the impregnated refractory support to a calcination process; wherein steps i) and ii) are optionally repeated. 1. A shaped catalyst body for producing ethylene oxide by gas-phase oxidation of ethylene , comprising silver deposited on a porous refractory support , the shaped catalyst body having a first face side surface , a second face side surface ...

MULTIVALENCE SEMICONDUCTOR PHOTOCATALYTIC MATERIALS

Described herein are heterogeneous materials comprising a p-type semiconductor comprising two metal oxide compounds of the same metal in two different oxidation states and an n-type semiconductor having a deeper valence band than the p-type semiconductor valence bands, wherein the semiconductor types are in ionic communication with each other. The heterogeneous materials enhance photocatalytic activity. 1. A heterogeneous material comprising:a p-type semiconductor comprising a first metal oxide compound and a second metal oxide compound, wherein the first metal oxide compound and the second metal oxide compound have different oxidation states of the same metal, and wherein the p-type semiconductor has a p-type valence band;a first n-type semiconductor having an n-type valence band which is deeper than the p-type valence band, wherein the first n-type semiconductor is in ionic charge communication with the p-type semiconductor.2. The heterogeneous material of claim 1 , further comprising a second n-type semiconductor.3. The heterogeneous material of claim 1 , wherein the first n-type semiconductor is TiO.4. The heterogeneous material of claim 1 , wherein the first n-type semiconductor is a combination of anatase TiOand rutile TiO.5. The heterogeneous material of claim 1 , wherein the first n-type semiconductor comprises WO.6. The heterogeneous material of claim 1 , wherein the molar ratio of the first n-type semiconductor to the second n-type semiconductor is about 0.5 to about 10.7. The heterogeneous material of claim 1 , wherein the second n-type semiconductor is CeO claim 1 , GeO claim 1 , SnO claim 1 , or ZrO.8. The heterogeneous material of claim 1 , wherein the second n-type semiconductor is CeO.9. The heterogeneous material of claim 1 , wherein the second n-type semiconductor is GeO.10. The heterogeneous material of claim 1 , wherein the second n-type semiconductor is SnO.11. The heterogeneous material of claim 1 , wherein the p-type semiconductor comprises ...

MULTI-LOBED POROUS CERAMIC BODY AND PROCESS FOR MAKING THE SAME

A carrier having at least three lobes, a first end, a second end, a wall between the ends and a non-uniform radius of transition at the intersection of an end and the wall is disclosed. A catalyst comprising the carrier, silver and promoters deposited on the carrier and useful for the epoxidation of olefins is also disclosed. A method for making the carrier, a method for making the catalyst and a process for epoxidation of an olefin with the catalyst are also disclosed. 1. A process for making a catalyst useful for the epoxidation of olefins , comprising:a. providing a porous ceramic body comprising a first end, a second end, and a wall disposed between and intersecting said ends, said wall comprising at least three lobes and three valleys formed in the length of the wall, said lobes rounded at the intersection of said first end and said wall and said valleys not rounded at the intersection of said first end and said wall, each valley located between two of said lobes;b. impregnating said porous ceramic body with a silver containing solution; andc. heating said impregnated porous ceramic body in a temperature range between 100° C. and 500° C.2. The process of wherein said solution comprises at least 8 weight percent silver based on the weight of said catalyst.3. The process of wherein said silver is between 10 and 30 weight percent based on the total weight of said catalyst.4. The process of wherein said impregnation comprises two or more impregnation steps.5. The process of wherein said impregnation further includes one or more promoters.6. The process of wherein one or more promoters is selected from the group consisting of rare earth metals claim 5 , magnesium claim 5 , rhenium claim 5 , and alkali metals.7. The process of wherein the quantity of said rhenium promoter is at least 1.25 mmole/kg relative to the total weight of the catalyst. This application is a continuation of U.S. application Ser. No. 14/677,090, filed Apr. 2, 2015, granted on Jul. 4, 2017 as U.S ...

Exhaust gas treatment device, gas turbine combined cycle power generation system, gas engine power generation system and exhaust gas treatment method

An exhaust gas treatment device capable of treating exhaust gas of a gas turbine or a gas engine includes an exhaust gas treatment catalyst comprising a perovskite composite oxide containing at least Ag and Dy in an A site and at least Mn in a B site.

Carrier treatment to improve catalytic performance of an ethylene oxide catalyst

A method for lowering the sodium content of different carriers which may have different physical properties as well as varying degrees of sodium is provided. The method, which lowers the sodium content from the surface, subsurface as well as the binding layer of the carrier, includes contacting a carrier with water. A rinse solution is recovered from the contacting. The rinse solution includes leached sodium from the carrier. The sodium content in the rinse solution is then determined. The contacting, recovering and determining are repeated until a steady state in the sodium content is achieved.

CATALYTIC CONVERSION OF BIO-MASS DERIVABLE ALIPHATIC ALCOHOLS TO VALUABLE ALKENES OR OXYGENATES

Disclosed is a catalyst system, its methods of preparation and its use for producing, among others, alkenes and/or saturated or unsaturated oxygenates and, which include at least one of an aldehyde and an acid (such as propyl aldehyde, acrolein, acrylic acid, isobutyl aldehyde, methacrolein, methacrylic acid), comprising subjecting the corresponding an alcohol or a diol selected from the group consisting of propanol, propanediol and isobutanol that is derivable from biomass, to a vapor phase process over the catalytic system described herein in the presence of a gas mixture of oxygen, air or nitrogen and/or other suitable diluting gas. In the case where one of 1-propanol, or 1,2-propanediol or 1,3-propanediol) or a mixture thereof is subjected to a vapor phase catalytic process over the said catalytic system in the presence of air or oxygen, and a co-fed gas, such as nitrogen or other diluting gas, the product is at least one of propylene, propyl aldehyde, acrolein and acrylic acid. In the case where isobutanol is subjected to such a process, the product is at least one of isobutylene, isobutyl aldehyde, methacrolein and methacrylic acid. The catalyst system comprises a single catalytic zone or multi-catalytic zones, in each of which the composition of the co-feed and other reaction parameter can be independently controlled. 1. A process for producing at least one of an alkene , an unsaturated aldehyde , and an unsaturated carboxylic acid , comprising subjecting a feed gas mixture of an alcohol or a diol selected from the group consisting of propanol , propanediol and isobutanol , and one or more co-feed gases , which comprises air or oxygen or nitrogen , and , optionally , one or more other suitable diluting gases , to a vapor phase reaction in a heated reactor in the presence of a catalyst system having a single or multiple catalytic zone(s) , each of which independently comprising a compound having the formula ASbXYZOwherein A is Mo or W , X is an element ...

POROUS BODIES WITH ENHANCED CRUSH STRENGTH

A porous body with enhanced fluid transport properties and crush strength is provided. The porous body includes the porous body includes at least 80 percent alpha alumina and having a pore volume from 0.3 mL/g to 1.2 mL/g, a surface area from 0.3 m/g to 3.0 m/g, and a pore architecture that provides at least one of a tortuosity of 7 or less, a constriction of 4 or less and a permeability of 30 mdarcys or greater, wherein the porous body is a cylinder comprising at least two spaced apart holes that extend through an entire length of the cylinder. The porous body has a flat plate crush strength improved by more than 10% over a porous body cylinder having a same outer diameter and length, but having only a single hole. 1. A porous body comprising:{'sup': 2', '2, 'at least 80 percent alpha alumina and having a pore volume from 0.3 mL/g to 1.2 mL/g, a surface area from 0.3 m/g to 3.0 m/g, and a pore architecture that provides at least one of a tortuosity of 7 or less, a constriction of 4 or less and a permeability of 30 mdarcys or greater, wherein said porous body is a cylinder comprising at least two spaced apart holes that extend through an entire length of the cylinder.'}2. The porous body of claim 1 , wherein said cylinder comprises three spaced apart holes that extend through said entire length of said cylinder.3. The porous body of claim 1 , wherein said cylinder comprises five spaced apart holes that extend through said entire length of said cylinder.4. The porous body of claim 1 , wherein said cylinder comprises seven spaced apart holes that extend through said entire length of said cylinder.5. The porous body of claim 1 , wherein said cylinder has an outer diameter of from about 4 to about 10 millimeters claim 1 , length about the same as the outer diameter claim 1 , and said cylinder comprises three to twenty spaced apart holes that extend through said entire length of said cylinder.6. The porous body of claim 1 , wherein each hole has an inner diameter from ...

CATALYST SYSTEM AND PROCESS FOR THE PRODUCTION OF GLYCOLS

The invention provides a catalyst system comprising: a) one or more catalytic species comprising silver and tungsten therein; and b) one or more catalytic species suitable for hydrogenation; and a process for the preparation of monoethylene glycol from starting material comprising one or more saccharides, by contacting said starting material with hydrogen in a reactor in the presence of a solvent and said catalyst system. 1. A catalyst system comprising:a) one or more catalytic species comprising silver and tungsten therein; andb) one or more catalytic species suitable for hydrogenation.2. The catalyst system according to claim 1 , wherein the one or more catalytic species comprising silver and tungsten therein are selected from silver tungstate-containing species and/or silver phosphotungstate-containing species.3. The catalyst system according to claim 1 , wherein the one or more catalytic species suitable for hydrogenation are selected from one or more transition metals from Groups 8 claim 1 , 9 or 10 of the Periodic Table claim 1 , and compounds thereof.4. The catalyst system according to claim 1 , wherein the one or more catalytic species suitable for hydrogenation are selected from one or more transition metals selected from the group of cobalt claim 1 , iron claim 1 , platinum claim 1 , palladium claim 1 , ruthenium claim 1 , rhodium claim 1 , nickel claim 1 , iridium claim 1 , and compounds thereof.5. The catalyst system according to claim 1 , wherein the one or more catalytic species suitable for hydrogenation are solid claim 1 , unsupported species.6. The catalyst system according to claim 1 , wherein the one or more catalytic species comprising silver and tungsten therein and/or the one or more catalytic species suitable for hydrogenation are on a solid catalyst supports.7. The catalyst system according to claim 6 , wherein the solid catalyst supports are selected from aluminas claim 6 , silicas claim 6 , zirconium oxide claim 6 , magnesium oxide claim 6 ...

CATALYST FOR HYDROGEN PEROXIDE DECOMPOSITION, PROCESS FOR PRODUCING THE SAME, AND METHOD FOR DECOMPOSING HYDROGEN PEROXIDE USING THE CATALYST

The present invention provides a catalyst for hydrogen peroxide decomposition with which hydrogen peroxide present in acid-containing water to be treated can be efficiently decomposed at low cost and which is less apt to dissolve away in the water being treated, can be stably used over a long period, and renders acid recovery and recycling possible. The present invention has solved the problems with a catalyst for hydrogen peroxide decomposition which is for use in decomposing hydrogen peroxide present in acid-containing water to be treated, the catalyst including a base and, a catalyst layer that is amorphous, includes a platinum-group metal having catalytic function and a Group-6 element metal having catalytic function and is formed over the base. 1. A catalyst for hydrogen peroxide decomposition for use in decomposing hydrogen peroxide present in acid-containing water to be treated , comprising:a base; anda catalyst layer that is amorphous, comprises a platinum-group metal having catalytic function and a Group-6 element metal having catalytic function and is formed over the base.2. The catalyst for hydrogen peroxide decomposition according to claim wherein the catalyst layer is formed over the base , via an interlayer.3. The catalyst for hydrogen peroxide decomposition according to claim 1 ,wherein a mass content ratio of the platinum-group metal to the Group-6 element metal is 99:1 to 70:30.4. The catalyst for hydrogen peroxide decomposition according to claim 1 ,wherein the platinum-group metal is at least one metal selected from the group consisting of Pt, Pd, Ru, Ir, and Rh.5. The catalyst for hydrogen peroxide decomposition according to claim 1 ,wherein the Group-6 element metal is at least one metal selected from the group consisting of Mo and W.6. The catalyst for hydrogen peroxide decomposition according to claim 1 ,wherein the amorphous catalyst layer is configured of metals comprising any one combination selected from among: Pd and Mo; Ru and Mo; Pt and ...

POROUS BODIES WITH ENHANCED PORE ARCHITECTURE

A porous body is provided with enhanced fluid transport properties that is capable of performing or facilitating separations, or performing reactions and/or providing areas for such separations or reactions to take place. The porous body includes at least 80 percent alpha alumina and has a pore volume from 0.3 mL/g to 1.2 mL/g and a surface area from 0.3 m/g to 3.0 m/g. The porous body further includes a pore architecture that provides at least one of a tortuosity of 7.0 or less, a constriction of 4.0 or less and a permeability of 30 mdarcys or greater. The porous body can be used in a wide variety of applications such as, for example, as a filter, as a membrane or as a catalyst carrier. 1. A porous body comprising:{'sup': 2', '2, 'at least 80 percent alpha alumina and having a pore volume from 0.3 mL/g to 1.2 mL/g, a surface area from 0.3 m/g to 3.0 m/g, and a pore architecture that provides at least one of a tortuosity of 7 or less, a constriction of 4 or less and a permeability of 30 mdarcys or greater.'}2. The porous body of claim 1 , wherein at least 90 percent of said pore volume is attributed to pores having a pore size of 20 microns or less.3. The porous body of claim 1 , wherein at least 85 percent of said pore volume is attributed to pores having a size from 1 micron to 6 microns.4. The porous body of claim 1 , wherein less than 15 percent of said pore volume is attributed to pores having a size of less than 1 micron.5. The porous body of claim 1 , wherein at least 80 percent of said pore volume is attributed to pores having a size from 1 micron to 10 microns.6. The porous body of claim 1 , further comprising a silica content claim 1 , as measured as SiO claim 1 , of less than 0.2 weight percent claim 1 , and a sodium content claim 1 , as measured as NaO claim 1 , of less than 0.2 weight percent.7. The porous body of claim 1 , further comprising an acid leachable sodium content of 40 ppm or less.8. The porous body of claim 1 , wherein said pore ...

EPOXIDATION PROCESSES AND CATALYSTS FOR USE THEREIN

Epoxidation methods and catalyst are described herein. The epoxidation catalysts generally include a metal component including silver and a support material including kaolinite, wherein the epoxidation catalyst includes less than 55 wt. % metal component. 1. A method comprising:carrying out selective oxidation, in the vapor phase, of an olefinic compound with molecular oxygen to produce an epoxide, wherein the selective oxidation is carried out in the presence of an epoxidation catalyst, and wherein the epoxidation catalyst comprises: (i) more than 5 wt. % to 80 wt. % of a metal component and (ii) a support comprising a phyllosilicate.2. The method of claim 1 , wherein the phyllosilicate is selected from the group consisting of talc claim 1 , kaolinite claim 1 , pyrophyllite claim 1 , and combinations thereof.3. The method of claim 1 , wherein the phyllosilicate has the chemical formula: MgSiO(OH).4. The method of claim 1 , wherein the phyllosilicate has the chemical formula: XY-6ZO(OH claim 1 ,F) claim 1 , wherein the X is selected from: K claim 1 , Na claim 1 , Ca claim 1 , or other Group I or Group II metals; Y is selected from: Al claim 1 , Mg claim 1 , and Fe; Z is selected from Si claim 1 , A claim 1 , Fe claim 1 , and Ti.5. The method of claim 1 , wherein the support comprises one or more components selected from the group consisting of: metal oxides and alkaline earth carbonates.6. The method of claim 3 , wherein the metal oxide is selected from the group consisting of: alumina claim 3 , silica titania claim 3 , zirconia claim 3 , and mixtures thereof.7. The method of claim 1 , wherein the metal component is selected from the group consisting of: silver claim 1 , gold claim 1 , copper claim 1 , ruthenium claim 1 , and combinations thereof.8. The method of claim 1 , wherein the olefinic compound is selected from the group consisting of: ethylene claim 1 , propylene claim 1 , butenes claim 1 , and combinations thereof.9. The method of claim 1 , wherein the ...

PROCESS FOR MANUFACTURING ETHYLENE OXIDE USING SCALED SELECTIVITY VALUES

Disclosed herein are methods of using scaled selectivities to assist in determining whether changes to the value of a target ethylene oxide production parameter—such as ethylene oxide production rate—used in the process of epoxidizing ethylene with a high-selectivity catalyst, have caused the process to move away from optimal operation. If the deviation from optimal operation has not worsened, it is generally unnecessary to perform a full optimization study even if the value of a target ethylene oxide production parameter has changed, which reduces or eliminates process disturbances caused by carrying out such studies. Methods are also disclosed which use both scaled selectivities and scaled reaction temperatures. If scaled selectivities reveal that a change in the value of a target ethylene oxide production parameter has moved the process away from optimal operation, scaled reaction temperatures can, under certain conditions, provide an indication of the directions in which the reaction temperature and/or overall catalyst chloriding effectiveness should be changed to move toward optimal operation. If a change in the value of a target ethylene oxide production parameter has improved the scaled selectivity, the scaled reaction temperature may also be used to guide further adjustments which may further improve scaled selectivity. 1. A method of operating a process for producing ethylene oxide by reacting a feed gas comprising ethylene , oxygen , and at least one organic chloride over a high selectivity , silver-based catalyst comprising rhenium , the method comprising the steps of:operating the process at a first value of a reaction temperature, a first value of an overall catalyst chloriding effectiveness, and a first set of values for a set of reference operating conditions, the set of reference operating conditions comprising a plurality of reference reaction parameters, to yield a first value of a target ethylene oxide production parameter and a first actual ...

Photocatalyst complex

Provided are a titanium dioxide-coated upconverting nanoparticle (UCNP) and a photocatalyst complex containing a gold nanorod (GNR) combined with the titanium dioxide-coated UCNP.

Porous shaped metal-carbon products

The present invention provides a porous metal-containing carbon-based material that is stable at high temperatures under aqueous conditions. The porous metal-containing carbon-based materials are particularly useful in catalytic applications. Also provided, are methods for making and using porous shaped metal-carbon products prepared from these materials.

CARRIER TREATMENT TO IMPROVE CATALYTIC PERFORMANCE OF AN ETHYLENE OXIDE CATALYST

A method for lowering the sodium content of different carriers which may have different physical properties as well as varying degrees of sodium is provided. The method, which lowers the sodium content from the surface, subsurface as well as the binding layer of the carrier, includes contacting a carrier with water. A rinse solution is recovered from the contacting. The rinse solution includes leached sodium from the carrier. The sodium content in the rinse solution is then determined. The contacting, recovering and determining are repeated until a steady state in the sodium content is achieved. 1. A carrier for a silver-based ethylene oxide catalyst , said carrier having a steady state sodium content of 20 ppm or less.2. The carrier of claim 1 , wherein said carrier comprises an alumina carrier comprising 80 weight percent or more alpha-alumina.3. The carrier of claim 2 , wherein said alumina carrier further comprises other phases of alumina claim 2 , silica claim 2 , mullite claim 2 , or alkali metal oxides.4. The carrier of claim 2 , wherein said alumina carrier has a B.E.T. surface area from 0.2 m/g to 3 m/gm.5. The carrier of claim 4 , wherein said alumina carrier has a water absorption from 0.22 cc to 0.8 cc/g.6. The carrier of claim 2 , wherein said alumina carrier has a monodal pore size distribution comprising pores having a pore diameter of at least 0.01 microns.7. The carrier of claim 2 , wherein said alumina carrier has a multimodal pore size distribution in which at least 40 percent of the pore volume is attributed to pores with diameters between 1 micrometer and 5 micrometers.8. The carrier of claim 2 , wherein said alumina carrier has a pore volume from pores with a diameter of 1 micrometer and less of less than 0.20 ml/g claim 2 , and a pore volume from pores with a diameter of 5 micrometers and above of less than 0.20 ml/g.9. The carrier of claim 1 , wherein said steady state sodium content is from 5 ppm to 15 ppm.10. The carrier of claim 1 , ...

ORGANO-CATALYTIC BIOMASS DECONSTRUCTION

The present invention provides processes for catalytic deconstruction of biomass using a solvent produced in a bioreforming reaction. 116.-. (canceled)17. A method of making chemicals and liquid fuels from biomass , the method comprising:{'sub': 2+', '1+', '2', '2+', '1-3, 'A. catalytically reacting water and a water-soluble CO oxygenated hydrocarbon in a liquid or vapor phase with Hin the presence of a deoxygenation catalyst at a deoxygenation temperature and deoxygenation pressure to produce a biomass processing solvent comprising a COhydrocarbon in a reaction stream;'}{'sub': '4+', 'B. catalytically reacting in the liquid or vapor phase a first portion of the biomass processing solvent in the presence of a condensation catalyst at a condensation temperature and condensation pressure to produce one or more C compounds;'}C. reacting a second portion of the biomass processing solvent with a solid biomass component, hydrogen and a deconstruction catalyst at a deconstruction temperature and a deconstruction pressure to produce a biomass hydrolysate comprising at least one member selected from the group consisting of a water-soluble lignocellulose derivative, a water-soluble cellulose derivative, a water-soluble hemicellulose derivative, a carbohydrate, a starch, a monosaccharide, a disaccharide, a polysaccharide, a sugar, a sugar alcohol, an alditol and a polyol; andD. recycling a portion of the biomass hydrolysate into the reactants of step A.18. The method of wherein the solid biomass component is selected from the group consisting of corn stover claim 17 , straw claim 17 , seed hulls claim 17 , sugarcane leavings claim 17 , bagasse claim 17 , nutshells claim 17 , cotton gin trash claim 17 , manure claim 17 , wood claim 17 , bark claim 17 , sawdust claim 17 , timber slash claim 17 , mill scrap claim 17 , recycled paper claim 17 , waste paper claim 17 , yard clippings claim 17 , poplars claim 17 , willows claim 17 , switch grass claim 17 , miscanthus claim 17 , ...

CATALYST FOR REDUCTION REACTION OF 3,4-DIHYDROXYTETRAHYDROFURAN, AND METHOD FOR PRODUCING 3,4-DIHYDROXYTETRAHYDROFURAN REDUCED PRODUCT

Provided is a catalyst for reduction reaction with which 1,4-butanediol or tetrahydrofuran can be obtained with higher selectivity than with the related art, using a raw material derived from biomass. The catalyst is used in a reduction reaction of 3,4-dihydroxytetrahydrofuran with hydrogen, wherein the catalyst contains metal catalysts (1) and (2) below; metal catalyst (1): a catalyst containing M1 and M2 below as metal species and supported on a carrier; and metal catalyst (2): a catalyst containing M1 below as a metal species and supported on a carrier; M1: one or more selected from the group consisting of iron and elements belonging to periods 4 to 6 and groups 5 to 7 of the periodic table; and M2: one or more selected from the group consisting of ruthenium, osmium, and elements belonging to periods 4 to 6 and groups 9 to 11 of the periodic table. 1. A catalyst for reduction reaction of 3 ,4-dihydroxytetrahydrofuran , the catalyst being used in a reaction for reducing 3 ,4-dihydroxytetrahydrofuran by reaction with hydrogen , wherein the catalyst contains a metal catalyst (1) and a metal catalyst (2) below;metal catalyst (1): a catalyst containing M1 and M2 below as metal species and supported on a carrier; andmetal catalyst (2): a catalyst containing M1 below as a metal species and supported on a carrier;M1: one or more selected from the group consisting of iron and elements belonging to periods 4 to 6 and belonging to groups 5 to 7 of the periodic table; andM2: one or more selected from the group consisting of ruthenium, osmium, and elements belonging to periods 4 to 6 and belonging to groups 9 to 11 of the periodic table.2. The catalyst for reduction reaction of 3 claim 1 ,4-dihydroxytetrahydrofuran according to claim 1 , wherein the M1 in the metal catalyst (1) is rhenium and the M2 in the metal catalyst (1) is gold.3. The catalyst for reduction reaction of 3 claim 1 ,4-dihydroxytetrahydrofuran according to claim 1 , wherein the carrier in the metal catalyst ...

Honeycomb-structured catalyst for organic substance decomposition and organic substance decomposing apparatus

A honeycomb-structured catalyst for decomposing an organic substance, which includes a catalyst particle. The catalyst particle contains a perovskite-type composite oxide represented by A x B y M z O w , where the A contains at least of Ba and Sr, the B contains Zr, the M is at least one of Mn, Co, Ni, and Fe, y+z=1, 1.001≤x≤1.05, 0.05≤z≤0.2, and w is a positive value that satisfies electrical neutrality. The toluene decomposition rate is greater than 90% when toluene is decomposed using the honeycomb-structured catalyst subjected to a heat treatment at 1200° C. for 48 hours and a gas that contains 50 ppm toluene, 80% nitrogen, and 20% oxygen as a volume concentration as a target at a space velocity of 30,000/h and a catalyst temperature of 400° C.

A process for preparing a silver catalyst, the catalyst, and its use for oleffin oxidation

A process for preparing a catalyst comprising silver, a rhenium component, and a rhenium co-promoter on a support, which process comprises - depositing the rhenium co-promoter on the support prior to or simultaneously with depositing silver on the support, and - depositing the rhenium component on the support after depositing silver on the support; the catalyst; and a process for preparing an olefin oxide by reacting an olefin with oxygen in the presence of the catalyst. They preferred rhenium co-promoter is tungsten.

Processo para produção de ácido acético

"PROCESSO PARA PRODUçãO DE áCIDO ACéTICO". Processo para a produção de ácido acético, cujo processo compreende contatar etano e/ou etileno com um gás contendo oxigênio molecular em um reator de leito de fluido na presença de um catalisador de oxidação sólido particulado fluidificado microesferoidal, em que pelo menos 90% das partículas do catalisador são menores do que 300 micra.

Hydrogenation catalyst and hydrogenation process

Use of supported catalysts for the reaction of organic compounds

Hydrophilic member and hydrophilic articles made by using the same

A hydrophilic member which comprises a substrate having a surface and fine particles present at least on the surface of the substrate. The fine particles are of at least one kind selected from among fine particles of tungsten oxide and fine particles of tungsten oxide composite materials. The substrate surface on which the fine particles are present has an arithmetic mean roughness Ra of 1 to 1000nm as determined with a standard length of 1000μm, and exhibits hydrophilicity independent of light.

Goldcatalyst

Carrier for ethylene oxide catalysts

An improved carrier for an ethylene epoxidation catalyst is provided. The carrier includes an alumina component containing a first portion of alumina particles having a mean primary particle size of, or greater than, 2 m and up to 6 m, and a second portion of alumina particles having a particle size less than 2 m. An improved catalyst containing the above-described carrier, as well as an improved process for the epoxidation of ethylene using the catalyst are also provided.

Silver-containing catalysts, the manufacture of such silver-containing catalysts, and the use thereof

A high activity and high selectivity silver catalyst comprising silver and, optionally, one or more promoters supported on a suitable support material having the form of a shaped agglomerate. The structure of the shaped agglomerate is that of a hollow cylinder having a relatively small inside (bore) diameter. The catalyst is made by providing the shaped material of a particular geometry and incorporating the catalytic components therein. The catalyst is useful in the epoxidation of ethylene.

Process for the production of acetic acid

A PROCESS FOR THE PRODUCTION OF ACETIC ACID WHICH PROCESS COMPRISES CONTACTING ETHANE AND/OR ETHYLENE WITH A MOLECULAR OXYGEN-CONTAINING GAS IN A FLUID BED REACTOR IN THE PRESENCE OF A MICROSPHEROIDAL FLUIDISED PARTICULATE SOLID OXIDATION CATALYST, WHEREIN AT LEAST 905 OF SAID CATALYST PARTICLES ARE LESS THAN 300 MICRONS.

Catalyst for vinyl acetate manufacture.

Process for preparing epoxidation catalysts