Настройки

Укажите год
-

Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

Подробнее
-

Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год
Применить Всего найдено 2707. Отображено 100.
07-01-2021 дата публикации

METHOD OF SYNTHESIS OF NANO-SIZED BETA ZEOLITES CONTAINING MESOPORES AND USES THEREOF

Номер: US20210001313A1
Автор: Ding Lianhui, Eid Manal, Shaik Kareemuddin
Принадлежит: Saudi Arabian Oil Company

A method for hydrocracking a hydrocarbon feedstock, the method comprising: contacting the hydrocarbon feedstock with a catalyst containing a nano-sized mesoporous zeolite composition under reaction conditions to produce a product stream containing at least 20 weight percent of hydrocarbons with 1-4 carbon atoms, wherein the nano-sized mesoporous zeolite composition is produced by a method that includes: mixing silica, a source of aluminum, and tetraethylammonium hydroxide to form an aluminosilicate fluid gel; drying the aluminosilicate fluid gel to form a dried gel mixture; subjecting the dried gel mixture to hydrothermal treatment to produce a zeolite precursor; adding cetyltrimethylammonium bromide (CTAB) to the zeolite precursor to form a templated mixture; subjecting the templated mixture to hydrothermal treatment to prepare a CTAB-templated zeolite; washing the CTAB-templated zeolite with distilled water; separating the CTAB-templated zeolite by centrifugation; and drying and calcining the CTAB-templated zeolites to produce a nano-sized mesoporous zeolite composition. 1. A method for hydrocracking a hydrocarbon feedstock , the method comprising: mixing silica, a source of aluminum, and tetraethylammonium hydroxide to form an aluminosilicate fluid gel;', 'drying the aluminosilicate fluid gel to form a dried gel mixture;', 'subjecting the dried gel mixture to hydrothermal treatment to produce a zeolite precursor;', 'adding cetyltrimethylammonium bromide (CTAB) to the zeolite precursor to form a templated mixture;', 'subjecting the templated mixture to hydrothermal treatment to prepare a CTAB-templated zeolite;', 'washing the CTAB-templated zeolite with distilled water;', 'separating the CTAB-templated zeolite by centrifugation; and', 'drying and calcining the CTAB-templated zeolites to produce a nano-sized mesoporous zeolite composition., 'contacting the hydrocarbon feedstock with a catalyst containing a nano-sized mesoporous zeolite composition under reaction ...

Подробнее
Номер записи: 1
05-01-2017 дата публикации

Egg-shell type hybrid structure of highly dispersed nanoparticle-metal oxide support, preparation method thereof, and use thereof

Номер: US20170001168A1
Автор: Dong Hyun Chun, Heon Jung, Ho Tae Lee, Jae In Kwon, Ji Chan Park, Jung Il Yang, Sung Jun Hong
Принадлежит: Korea Institute of Energy Research KIER

The present invention relates to an egg-shell type hybrid structure of highly dispersed nanoparticles-metal oxide support, a preparation method thereof, and a use thereof. Specifically, the present invention relates to an egg-shell type hybrid structure of highly dispersed nanoparticles-metal oxide support, providing an excellent platform in a size of nanometers or micrometers which can support nanoparticles selectively in the porous shell portion by employing a metal oxide support with an average diameter of nanometers or micrometers including a core of nonporous metal oxide and a shell of porous metal oxides, a preparation method thereof, and a use thereof.

Подробнее
Номер записи: 2
02-01-2020 дата публикации

Composition for Mineralizing Carbon Dioxide and Nitrogen Oxide Gases and Uses of Same

Номер: US20200001273A1
Автор: Llobregat Agustí Juan Carlos, Sivera Marzá José Antonio
Принадлежит:

The invention relates to a composition for mineralising carbon dioxide and nitrogen oxide gases, which comprises a mixture of magnesium (between 1 and 25%), iron (between 1 and 23%), calcium monoxide (between 1 and 25%), titanium dioxide (between 0.1 and 11%) and silicon dioxide (between 16 and 75%), with a particle diameter between 100 nm and 4000 μm. The composition causes the mineralisation of carbon dioxide (CO) and of the gaseous chemical compounds known as “nitrogen oxides” (NO) in the atmosphere. This composition can be added or mixed as an additive in paints, dyes, resins and elastic polymers (gum and natural rubber) in parts with wear, and for any type of covering. 1. A composition for mineralising gases of carbon dioxide and nitrogen oxides comprising a mixture of igneous rocks which comprises magnesium (between 1 and 25%) , iron (between 1 and 23%) , calcium monoxide (between 1 and 25%) , titanium dioxide (between 0.1 and 11%) and silicon dioxide (between 16 and 75%) , with a particle diameter between 100 nm and 4000 μm.2. (canceled)3. (canceled)4. (canceled)5. (canceled)6. The composition according to claim 1 , comprising between 0.1 and 2% of titanium dioxide.7. A coating comprising the composition defined in .8. A coating comprising the composition defined in .9. A paint claim 1 , lacquer claim 1 , dye claim 1 , resin claim 1 , natural rubber claim 1 , gum and/or varnish claim 1 , comprising the composition defined in .10. A paint claim 6 , lacquer claim 6 , dye claim 6 , resin claim 6 , natural rubber claim 6 , gum and/or varnish claim 6 , comprising the composition defined in .11. The natural rubber and/or gum according to claim 9 , wherein it is an element subject to wear.12. The natural rubber and/or gum according to claim 11 , wherein said element subject to wear is a tire.13. The paint claim 9 , lacquer claim 9 , dye claim 9 , resin claim 9 , natural rubber claim 9 , gum and/or varnish according to claim 9 , wherein it comprises a percentage by ...

Подробнее
Номер записи: 3
02-01-2020 дата публикации

SMALL PARTICLE COMPOSITIONS AND ASSOCIATED METHODS

Номер: US20200001303A1
Автор: Dobbs Robert J.
Принадлежит: Primet Precision Materials, Inc.

Milling methods that use grinding media particles formed of a ceramic material having an interlamellar spacing of less than 1250 nm. 1. Grinding media comprising:grinding media particles formed of a ceramic material, the ceramic material having an interlamellar spacing of less than 1250 nm.2. Grinding media comprising:grinding media particles comprising a core material and a coating formed on the core material, the coating including a plurality of layers, at least one of the layers having a thickness of less than 100 nanometers.3. The grinding media of claim 2 , wherein at least one of the layers has a thickness of less than 10 nanometers.4. The grinding media of claim 2 , wherein multiple layers have a thickness of less than 10 nanometers.5. The grinding media of claim 2 , wherein the coating includes at least 10 layers.6. The grinding media of claim 2 , wherein a first layer comprises zirconium and a second layer claim 2 , formed on the first layer claim 2 , comprises aluminum.7. The grinding media of claim 2 , wherein the particles have an average size of less than 150 micron.8. The grinding media of claim 2 , wherein the core material has a density of greater than 5 grams/cubic centimeter.9. Grinding media comprising:grinding media particles formed of a nanocrystalline composite comprising a plurality of nanoparticles dispersed in a matrix material.10. The grinding media of claim 9 , wherein the nanoparticles have an average particle size of less than 10 nanometers.11. The grinding media of claim 12 , wherein the nanoparticles comprise a transition metal nitride.12. The grinding media of claim 12 , wherein the matrix material comprises a nitride.13. A method comprising:milling inorganic feed particles using grinding media to produce an inorganic milled particle composition having an average particle size of less than 100 nm and a contamination level of less than 500 ppm, the feed particles having an average particle size of greater than 10 times the average ...

Подробнее
Номер записи: 4
03-01-2019 дата публикации

METHOD FOR THE PREPARATION OF A CATALYSED MONOLITH

Номер: US20190001305A1
Автор: Johansen Keld
Принадлежит: Haldor Topsoe A/S

Method for the preparation of a catalysed monolithic body or a catalysed particulate filter by capillary suction of sol-solution containing catalytically active material and metal oxide catalyst carriers or precursors thereof into pores of monolithic substrate. 1. A method for the preparation of a catalysed monolith , comprising the steps ofa) providing a porous monolith substrate with a plurality of longitudinal flow channels separated by gas permeable partition walls, the monolith substrate having a first end face and at a distance to the first end face a second end face;b) in a container providing a sol solution at least in an amount corresponding to pore volume of the gas permeable partition walls, the sol solution containing a water soluble or colloidal precursor of one or more catalytically active compounds and a water soluble or colloidal precursor of one or more metal oxides catalyst carrier compounds, at least one of the one or more precursors is colloid and at least one of the one or more precursors is water soluble;c) placing the monolith substrate substantially vertically in the container with the first or second end face dipped into the sol solution;d) sucking up the sol solely by capillary forces into pores of the permeable partition walls from the end face dipped into the sol solution without applying vacuum or pressure to a predetermined distance in the permeable partition walls from the end face dipped into the sol solution;e) subsequently inverting the monolith substrate and placing the monolith substrate substantially vertically in the container with the opposite end face dipped into the sol solution;f) sucking up the sol solely by capillary forces into pores of the permeable partition walls from the opposite end face dipped into the sol solution without applying vacuum or pressure; andg) drying and calcining the thus coated monolith substrate.2. The method of claim 1 , wherein the predetermined distance is about half of the whole distance between ...

Подробнее
Номер записи: 5
03-01-2019 дата публикации

NOVEL COMPOSITE OF IRON COMPOUND AND GRAPHENE OXIDE

Номер: US20190001307A1
Автор: Hashimoto Hideki, HORIBE Tomoko, ISOBE Kiyoshi, KINOSHITA Isamu, SERA Yoshihiko, YAMASHITA Eiji
Принадлежит:

Provided is a novel composite of an iron compound and a graphene oxide which is extremely useful as a photocatalyst or an active ingredient of an electrode. In this composite of an iron compound and graphene oxide, iron compound particles are supported on the graphene oxide. 1. A particulate composite comprising an iron compound and a graphene oxide , wherein(1) the particle size of primary particles in the particulate composite is in the range of 0.1 to 100 μm,(2) the particle size of the iron compound is in the range of 0.1 to 10 nm,(3) the content of iron to the composite is in the range of 0.1 to 50% by mass,{'sup': '−1', '(4) an absorption originating from an O—H group, an absorption originating from a C═O group, and an absorption around 701 cmoriginating from a Fe—O group are substantially absent, and an absorption originating from a C—O group is present, in an infrared absorption spectrum, and'}(5) the iron compound is supported on the graphene oxide.2. The composite according to claim 1 , wherein the iron compound is FeO claim 1 , FeOor a mixture thereof.3. The composite according to claim 1 , wherein the particle size of the iron compound is in the range of 0.5 to 5 nm.4. The composite according to claim 1 , wherein the content of iron to the composite is in the range of 0.5 to 40% by mass.5. The composite according to claim 1 , wherein there is substantially no signal above 2θ=30° in a powder X-Ray diffraction measurement.6. The composite according to claim 1 , wherein the graphene oxide keeps supporting the iron compound after irradiation with white light in an aqueous solution at pH 2 claim 1 , and the graphene keeps supporting the iron compound after irradiation with white light in an aqueous solution at pH 14.7. A method for producing a composite comprising an iron compound and a graphene oxide claim 1 , the method comprising the step of suspending an iron compound and a graphene oxide as raw materials in an inert solvent claim 1 , and irradiating the ...

Подробнее
Номер записи: 6
03-01-2019 дата публикации

Method for the production of new nanomaterials

Номер: US20190001308A1
Автор: Nancy Linder, Nicolas PASTERNAK
Принадлежит: Commissariat a lEnergie Atomique et aux Energies Alternatives CEA, Universite de Cergy-Pontoise

A method for producing new nanomaterials, 80 to 100 mol % of which are composed of TiO2 and 0 to 20 mol % are composed of another metal or semi-metal oxide that has a specific surface of 100 to 300 m2.g−1and 1 to 3 hydroxyl groups per nm2.

Подробнее
Номер записи: 7
03-01-2019 дата публикации

CATALYST FOR FLUIDIZED BED AMMOXIDATION REACTION, AND METHOD FOR PRODUCING ACRYLONITRILE

Номер: US20190001309A1
Автор: FUKUZAWA Akiyoshi, KANETA Masatoshi
Принадлежит: ASAHI KASEI KABUSHIKI KAISHA

A catalyst for a fluidized bed ammoxidation reaction containing silica and a metal oxide, wherein a composite of the silica and the metal oxide is represented by the following formula (1). 1. A catalyst for a fluidized bed ammoxidation reaction comprising:silica anda metal oxide, wherein {'br': None, 'sub': 12', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', '2', 'A, 'MoBiFeNiCoCeCrXO/(SiO)\u2003\u2003(1);'}, 'a composite of the silica and the metal oxide is represented by the following formula (1){'sub': '2', 'claim-text': [{'br': None, 'i': a', 'b+f', 'c+d, 'α=1.5/(1.5()+) \u2003\u2003(2);'}, {'br': None, 'i': b+f', 'c+d, 'β=1.5()/() \u2003\u2003(3); and'}, {'br': None, 'i': 'd/c', 'γ=\u2003\u2003(4).'}], 'wherein Mo represents molybdenum, Bi represents bismuth, Fe represents iron, Ni represents nickel, Co represents cobalt, Ce represents cerium, Cr represents chromium, X represents at least one element selected from the group consisting of potassium, rubidium, and cesium, SiOrepresents silica, a, b, c, d, e, f, g, and h each represent an atomic ratio of each element and satisfy 0.1≤a≤1, 1≤b≤3, 1≤c≤6.5, 1≤d≤6.5, 0.2≤e≤1.2, f≤0.05, and 0.05≤g≤1, provided that h is an atomic ratio of an oxygen atom, the atomic ratio satisfying valences of constituent elements excluding silica, A represents a content of silica (% by mass) in the composite and satisfies 35≤A≤48, and values of α, β, and γ calculated from the atomic ratios of respective elements by the following expressions (2), (3), and (4) satisfy 0.03≤α≤0.08, 0.2≤β≤0.4, and 0.5≤γ≤22. The catalyst for the fluidized bed ammoxidation reaction according to claim 1 , wherein the X represents rubidium.3. The catalyst for the fluidized bed ammoxidation reaction according to claim 1 , wherein δ calculated from the atomic ratio of each element by the following expression (5) satisfies 1.1≤δ≤3.0:{'br': None, 'i': 'e/a', 'δ=\u2003\u2003(5).'}4. A method for producing the catalyst for the fluidized bed ammoxidation reaction according ...

Подробнее
Номер записи: 8
03-01-2019 дата публикации

HYDROCARBON PROCESSES USING HALOMETALLATE IONIC LIQUID MICRO-EMULSIONS

Номер: US20190001314A1
Автор: Abrevaya Hayim, Buchbinder Avram M., Towler Gavin P.
Принадлежит:

A process utilizing a micro-emulsion is described. The micro-emulsion formed by contacting an ionic liquid, a co-solvent, a hydrocarbon, an optional surfactant, and an optional catalyst promoter to form the micro-emulsion. The micro-emulsion comprises a hydrocarbon component comprising the hydrocarbon and an ionic liquid component comprising the ionic liquid. The ionic liquid comprises a halometallate anion and a cation. The co-solvent has a polarity greater than a polarity of the hydrocarbon. The ionic liquid is present in an amount of 0.05 wt % to 40 wt % of the micro-emulsion. A product mixture comprising a product is produced in a process zone containing the micro-emulsion. 1. A process utilizing a micro-emulsion comprising: 'contacting an ionic liquid, a co-solvent, a hydrocarbon, an optional surfactant, and an optional catalyst promoter to form the micro-emulsion, the micro-emulsion comprising a hydrocarbon component comprising the hydrocarbon and an ionic liquid component comprising the ionic liquid, the ionic liquid comprising a halometallate anion and a cation, the co-solvent having a polarity greater than a polarity of the hydrocarbon, the ionic liquid being present in an amount of 0.05 wt % to 40 wt % of the micro-emulsion; and', 'forming the micro-emulsion comprisingproducing a product mixture in a process zone containing the micro-emulsion, the product mixture comprising a product.2. The process of wherein the hydrocarbon comprises an isoparaffin having from 4 to 10 carbon atoms; and wherein producing the product mixture in the process zone comprises passing an olefin having from 2 to 8 carbon atoms to the process zone containing the micro-emulsion claim 1 , the process zone being operated at alkylation reaction conditions to react the olefin and the isoparaffin to generate the product mixture and wherein the product comprises an alkylate.3. The process of further comprising:altering a composition of the product mixture to destroy the micro-emulsion; ...

Подробнее
Номер записи: 9
03-01-2019 дата публикации

METHOD FOR THE PREPARATION OF A ZONE COATED CATALYSED MONOLITH

Номер: US20190001318A1
Автор: Johansen Keld
Принадлежит: Haldor Topsoe A/S

Method for zone coating of monolithic substrates by using different sol-solution containing different catalyst carrier precursors and metal catalyst precursors and suction of one of the sol-solution up into pores in the walls of the zone to be coated, solely by capillary forces and another different sol-solution into the walls of another zone to be coated by capillary forces. 1. A method for the preparation of a catalysed monolith zone coated with different catalysts , comprising the steps ofa) providing a porous monolith substrate with a plurality of longitudinal flow channels separated by gas permeable partition walls, the monolith substrate having a first end face and at a distance to the first end face a second end face;b) providing a first sol solution in an amount corresponding to at least the pore volume in a first catalyst zone of the gas permeable partition walls to be coated with the first sol solution, the first sol solution containing water soluble or suspended precursors of one or more catalytically active compounds and water soluble or suspended precursors or oxides of one or metal oxides catalyst carrier compounds, at least one of the one or more precursors or oxides is suspended and at least one of the one or more precursors is dissolved in the sol solution;c) providing a second sol solution in an amount corresponding to at least the pore volume in a second catalyst zone of the gas permeable partition walls to be coated with the second sol solution, the second sol solution containing water soluble or suspended precursors of one or more catalytically active compounds different to the catalytically active compounds in the first sol solution and water soluble or suspended precursors or oxides of one or more metal oxides catalyst carrier compounds, at least one of the one or more precursors or oxides is suspended and at least one of the one or more precursors is dissolved in the second sol solution;d) placing the porous monolith substrate substantially ...

Подробнее
Номер записи: 10
07-01-2021 дата публикации

NANOLOG AND NANOPARTICLES AND METHOD OF FORMATION

Номер: US20210002144A1
Автор: Aguf Vladimir, Kossoy Anna, Margolin Alexander
Принадлежит:

A nanostructure is provided that in one embodiment includes a cluster of cylindrical bodies. Each of the cylindrical bodies in the cluster are substantially aligned with one another so that their lengths are substantially parallel. The composition of the cylindrical bodies include tungsten (W) and sulfur (S), and each of the cylindrical bodies has a geometry with at least one dimension that is in the nanoscale. Each cluster of cylindrical bodies may have a width dimension ranging from 0.2 microns to 5.0 microns, and a length greater than 5.0 microns. In some embodiments, the cylindrical bodies are composed of tungsten disulfide (WS). In another embodiment the nanolog is a particle comprised of external concentric disulfide layers which encloses internal disulfide folds and regions of oxide. Proportions between disulfide and oxide can be tailored by thermal treatment and/or extent of initial synthesis reaction. 1. A nanostructure comprising:a cluster of substantially cylindrical bodies, the substantially cylindrical bodies in said cluster are directly in contact with one another along their lengths and are substantially aligned with one another so that their lengths are substantially parallel, the composition of the cylindrical bodies comprising tungsten (W) and sulfur (S), and each of the cylindrical bodies has a geometry with at least one dimension that is in the nanoscale.2. The nanostructure of claim 1 , wherein each cluster of cylindrical bodies has a width dimension ranging from 0.2 microns to 5.0 microns claim 1 , and a length greater than 5.0 microns.3. The nanostructure of claim 1 , wherein each cylindrical body has a hollow core across its entire length.4. The nanostructure of claim 3 , wherein an oxide layer between the tungsten and sulfur containing body and the hollow core.5. The nanostructure of claim 1 , wherein the cylindrical body has a solid core in at least one portion of the cylindrical body along its length.6. A method of forming a nanostructure ...

Подробнее
Номер записи: 11
07-01-2021 дата публикации

ZERO VALENT IRON CATALYST FOR REDUCTION PROCESSES

Номер: US20210002156A1
Автор: ALBO Yael, MEYERSTEIN Dan, NEELAM
Принадлежит: Ariel Scientific Innovations Ltd.

A method of reducing a substrate and a system for reducing a substrate are described herein. The method comprises contacting the substrate with a catalytic amount of zero valent iron particles and with a reducing agent, wherein the zero valent iron particles mediate transfer of an electron, hydrogen atom and/or hydride ion from the reducing agent to the substrate. The system comprises zero valent iron particles embedded in a porous matrix, wherein the system is configured for contacting the substrate and a reducing agent with a catalytic amount of the zero valent iron particles in the porous matrix. 1. A method of reducing a substrate , the method comprising contacting the substrate with a catalytic amount of zero valent iron particles and with a reducing agent , wherein said zero valent iron particles mediate transfer of an electron , hydrogen atom and/or hydride ion from said reducing agent to said substrate , thereby reducing the substrate.2. The method of claim 1 , wherein a molar ratio of an amount of said substrate which is reduced to said catalytic amount is at least 10:1 (substrate: iron).3. The method of claim 1 , being effected by transfer of electrons claim 1 , hydrogen atoms and/or hydride ions from said reducing agent to said zero valent iron particles so as to form zero valent iron particles with a negative charge and at least one hydrogen atom bound thereto.4. The method of claim 1 , wherein said reducing agent is characterized by a standard redox potential which is −0.5 Vor more negative claim 1 , in aqueous solution at pH 8.5. The method of claim 4 , wherein said standard redox potential is −0.7 Vor more negative claim 4 , in aqueous solution at pH 8.6. The method of claim 1 , wherein said zero valent iron particles comprise zero valent iron nanoparticles.7. The method of claim 1 , wherein said zero valent iron particles are embedded in a porous matrix.8. (canceled)9. The method of claim 1 , wherein said reducing agent is selected from the group ...

Подробнее
Номер записи: 12
05-01-2017 дата публикации

METHANE STEAM REFORMING, USING NICKEL/ALUMINA NANOCOMPOSITE CATALYST OR NICKEL/SILICA-ALUMINA HYBRID NANOCOMPOSITE CATALYST

Номер: US20170001863A1
Автор: Jung Heon, Lim Tak Hyoung, Park Ji Chan, Yang Jung Il
Принадлежит: KOREA INSTITUTE OF ENERGY RESEARCH

The present invention relates to a method of methane steam reforming using a nickel/alumina nanocomposite catalyst. More specifically, the present invention relates to a method of carrying out methane steam reforming using a nickel/alumina nanocomposite catalyst wherein nickel metal nanoparticles are uniformly loaded in a high amount on a support via a melt infiltration method with an excellent methane conversion even under a relatively severe reaction condition of a high gas hourly space velocity or low steam supply, and to a catalyst for this method. In addition, the present invention prepares a nickel/silica-alumina hybrid nanocatalyst by mixing the catalyst prepared by the melt infiltration method as the first catalyst and the nickel silica yolk-shell catalyst as the second catalyst, and applies it to the steam reforming of methane to provide a still more excellent catalytic activity even under the higher temperature of ° C. or more with the excellent methane conversion. 150. A method of methane steam reforming with a methane conversion of % or more , which comprisesi) a step of providing a first catalyst for methane steam reforming which is prepared by a first step of grinding and mixing a porous alumina support and a nickel-containing compound having a melting point lower than the porous alumina support, and melt-infiltrating the nickel-containing compound into pores of the surface, inside, or both of the porous alumina support in a closed system at a temperature ranging from the melting point of the nickel-containing compound to ±5° C. higher than the melting point; and a second step of thermally treating the melt-infiltrated composite powder at 400 to 600° C. under reducing gas atmosphere to load nickel particles having the average particle size of 10 nm or less in the porous alumina support; ora nickel silica-alumina hybrid catalyst comprising the first catalyst; and a yolk-shell shaped second catalyst for methane steam reforming which has a nano- or micro- ...

Подробнее
Номер записи: 13
04-01-2018 дата публикации

COBALT OXIDE NANOPARTICLE PREPARATION

Номер: US20180002191A1
Автор: Sandford David Wallace
Принадлежит: CERION, LLC

A method of making stable aqueous dispersions and concentrates of cobalt oxide nanoparticles is described, wherein a reaction mixture comprising cobalt(II) ion, a carboxylic acid, a base, an oxidant and water is formed, and in which cobalt oxide nanoparticles are formed. Cobalt oxide nanoparticles ranging in average crystallite size from about 4 nm to 15 nm are described. The cobalt oxide nanoparticles may be isolated and redispersed to form stable, homogeneous, aqueous dispersions of cobalt oxide nanoparticles containing from about 1 to about 20 weight percent cobalt oxide. 1. A method of making nanoparticles , comprising:a. forming a reaction mixture comprising cobalt(II) ion, a carboxylic acid, a base, an oxidant, and water; andb. forming cobalt oxide nanoparticles in the reaction mixture.2. The method of claim 1 , further comprising heating or cooling said reaction mixture to a temperature in the range of about 0° C. to about 100°.3. The method of claim 1 , wherein said carboxylic acid is a water soluble carboxylic acid comprising a C-Calkyl carboxylic acid.4. The method of claim 3 , wherein said water soluble carboxylic acid is acetic acid.5. The method of claim 1 , wherein said carboxylic acid is a monoether carboxylic acid or a polyether carboxylic acid.6. The method of claim 5 , wherein said monoether carboxylic acid is methoxyacetic acid claim 5 , ethoxyacetic acid or 3-methoxypropionic acid.7. The method of claim 1 , wherein said peroxide is hydrogen peroxide.8. The method of claim 1 , further comprising adding a second portion of an oxidant.9. The method of claim 8 , wherein adding said second portion of an oxidant is provided by a plurality of additions of said oxidant.10. The method of claim 1 , wherein said reaction mixture is formed by the sequential steps of:1) adding cobalt(II) ion, a carboxylic acid, and water;2) adjusting the pH of the reaction mixture to alkaline conditions by addition of a base;3) adding an oxidant.11. The method of claim 1 , ...

Подробнее
Номер записи: 14
03-01-2019 дата публикации

Synthesis of fibrous nano-silica spheres with controlled particle size, fibre density, and various textural properties

Номер: US20190002297A1
Автор: Ayan Maity, Baljeet Singh, Nisha BAYAL, Rustam SINGH, Vivek Polshettiwar
Принадлежит: TATA INSTITUTE OF FUNDAMENTAL RESEARCH

The present disclosure provides a method for synthesizing fibrous silica nanospheres, the method can include, in sequence, the steps of: a) providing a reaction mixture comprising a silica precursor, a hydrolyzing agent, a template molecule, a cosurfactant and one or more solvents; b) maintaining the reaction mixture under stirring for a length of time; c) heating the reaction mixture to a temperature for a length of time; d) cooling the reaction mixture to obtain a solid, and (e) calcinating the solid to pro duce fibrous silica nanospheres, wherein desirable product characteristics such as particle size, fiber density, surface area, pore volume and pore size can be obtained by controlling one or more parameters of the method. The present disclosure further provides a method for synthesizing fibrous silica nanospheres using conventional heating such as refluxing the reactants in an open reactor, thereby eliminating the need for microwave heating in a closed reactor or the need for any pressure reactors.

Подробнее
Номер записи: 15
03-01-2019 дата публикации

Photocatalytic Conversion of Carbon Dioxide and Water Into Substituted or Unsubstituted Hydrocarbon(s)

Номер: US20190002364A1
Автор: ANDERSSON Gunther, GOLOVKO Vladimir, METHA Gregory F, NANN Thomas
Принадлежит:

A method for the production of hydrocarbon(s), such as methane, substituted hydrocarbons, such as methanol, or the production of hydrogen, the method comprising the steps of contacting a first catalyst with water in order to photocatalyse the splitting of at least some of the water into hydrogen and oxygen; and contacting a second catalyst with a gas stream comprising carbon dioxide and at least some of the hydrogen produced from step (a) in order to photocatalyse the reaction between the hydrogen and carbon dioxide to produce hydrocarbon(s), such as methane, and/or substituted hydrocarbons, such as methanol. In an embodiment, the catalyst comprises gold and or ruthenium nanoclusters supported on a substrate. 1. A method for the production of hydrocarbon(s) , such as methane , or substituted hydrocarbons , such as methanol , the method comprising the steps of:contacting a catalyst with water and carbon dioxide in the presence of light in order to photocatalyse:(i) the splitting of at least some of the water into hydrogen and oxygen; and(ii) the reaction between hydrogen and carbon dioxide to produce at least one of a hydrocarbon and/or substituted hydrocarbons;wherein the catalyst comprises at least gold and ruthenium, in the form of at least one nanocluster supported by a substrate.2. The method according to claim 1 , wherein support substrate is selected from the group comprising graphene claim 1 , graphite claim 1 , carbon black claim 1 , nanotubes claim 1 , fullerenes claim 1 , zeolites claim 1 , carbon nitrides claim 1 , metal nitrides and or oxides including zinc oxide or titanium oxide.3. The method according to claim 1 , wherein the gold and ruthenium nanocluster has at least one Au—Ru bond having a distance in the range of from about 2.5 to 3.0 Å.4. The method according to claim 1 , wherein the gold and ruthenium nanocluster comprise an average cluster size less than about 2 nm.5. A method for the production of hydrocarbon(s) claim 1 , such as methane claim ...

Подробнее
Номер записи: 16
20-01-2022 дата публикации

SYNTHETIC CATALYSTS FOR CARBOHYDRATE PROCESSING

Номер: US20220016612A1
Автор: Zhao Yan
Принадлежит:

The disclosure relates to molecularly-imprinted cross-linked micelles that can selectively hydrolyze carbohydrates. 1. A molecularly-imprinted cross-linked micelle selective for a glycan , the micelle comprising:an imprint of the functional or structural analogue of a glycan;a binding unit and an acid unit, wherein the binding unit is bindable to the glycan;and the acid unit is proximal to a glycosidic bond of the glycan during binding of the glycan to the binding unit.2. The micelle of claim 1 , wherein the micelle is obtained from the functional or structural analogue of a glycan as a template.3. The micelle of claim 1 , wherein the functional or structural analogue of the glycan is a monosaccharide.4. The micelle of claim 1 , wherein the functional or structural analogue of the glycan is an oligosaccharide or polysaccharide.5. The micelle of claim 1 , wherein the functional or structural analogue of the glycan is glucose claim 1 , maltose claim 1 , or maltotriose.6. The micelle of claim 1 , wherein the acid unit is a double acid.7. The micelle of claim 1 , wherein the acid unit is a Brønsted acid.8. The micelle of claim 7 , wherein the acidic unit is a carboxylic acid claim 7 , sulfonic acid claim 7 , or a phosphonic acid.9. The micelle of claim 1 , wherein the acid unit is a Lewis acid.10. The micelle of claim 1 , wherein the micelle is obtained from cross-linkable surfactants containing one or more functional groups that are polymerizable and cross-linkable.11. The micelle of claim 1 , wherein the micelle comprises surfactants comprising one or more polymerizable vinyl groups that are polymerizable by free radical polymerization.12. The micelle of claim 1 , wherein the micelle comprises a surface and a core and is cross-linked on the surface by covalent bonds.13. The micelle of claim 1 , wherein the micelle is cross-linked in the core by covalent bonds.14. The micelle of claim 1 , wherein the binding unit comprises a boroxole claim 1 , a boronic acid claim 1 , ...

Подробнее
Номер записи: 17
14-01-2016 дата публикации

PHOTOCATALYTIC DEGRADATION OF SUGAR

Номер: US20160008783A1
Автор: Roundhill David Max
Принадлежит:

Systems having at least one photonic antenna molecule and at least one catalyst for degrading a sugar to degradation products using light energy are disclosed. Also disclosed are the devices and methods that use the systems for photocatalytically degrading a sugar into degradation products. 1. A system for photocatalytically degrading a sugar , the system comprising:at least one photonic antenna molecule; andat least one catalyst;wherein the photonic antenna molecule is capable of collecting a light energy and transferring the light energy to the catalyst; andwherein the catalyst is capable of degrading the sugar to produce at least one degradation product.2. The system of claim 1 , wherein the photonic antenna molecule is selected from the group consisting of 5-hydroxytryptamine claim 1 , an acridine claim 1 , an Alexa Fluor® dye claim 1 , an ATTO dye claim 1 , a BODIPY® dye claim 1 , Coumarin 6 claim 1 , a CY dye claim 1 , DAPI claim 1 , an ethidium compound claim 1 , a Hoechst dye claim 1 , Oregon Green claim 1 , rhodamine claim 1 , a compound comprising Ru(bpy) claim 1 , a compound comprising (Pt(pop)) claim 1 , a YOYO dye claim 1 , and a SeTau dye.3. The system of claim 1 , wherein the photonic antenna molecule is fluorescein.4. The system of claim 1 , wherein the catalyst is a metal nanoparticle.5. The system of claim 4 , wherein the metal nanoparticle comprises a metal selected from the group consisting of ruthenium claim 4 , palladium claim 4 , gold claim 4 , silver claim 4 , nickel claim 4 , tungsten claim 4 , molybdenum claim 4 , gallium claim 4 , iridium claim 4 , rhodium claim 4 , osmium claim 4 , copper claim 4 , cobalt claim 4 , iron claim 4 , and platinum claim 4 , or a mixture thereof.6. The system of claim 4 , wherein the metal nanoparticle comprises a lanthanide.7. The system of claim 4 , wherein the metal nanoparticle comprises a metal selected from the group consisting of platinum claim 4 , nickel claim 4 , and europium.8. The system of claim 5 , ...

Подробнее
Номер записи: 18
14-01-2021 дата публикации

Metal Oxide Nanoparticle-Based Magnetic Resonance Imaging Contrast Agent with a Central Cavity

Номер: US20210008228A1
Автор: KIM Min sik, KIM Taek Hoon, Lee Kwang Yeol, Vu Ngoc Phan
Принадлежит: INTRON BIOTECHNOLOGY, INC.

The present invention relates to a magnetic resonance imaging (MRI) contrast agent, particularly an MRI contrast agent derived from nanoparticle that is porous first metal-doped second metal oxide nanoparticle with a central cavity, and a method for producing the same. The MEI contrast agent made in accordance with the present invention can be used not only as a drug-delivery agent for therapy but also as an MRI contrast agent for diagnosis. 134.-. (canceled)35. A method for producing an MRI contrast agent derived from a porous manganese ion-doped iron oxide nanoparticle with a central cavity which is at least one of the shapes selected from the group consisting of octahedral and cross shapes , comprising the following steps:A) synthesizing manganese oxide nanoparticles with a central cavity which is at least one of the shapes selected from the group consisting of octahedral and cross shapes under inert gas environment;B) forming an epitaxial layer of iron oxide on the surface of manganese oxide nanoparticles under inert gas environment;C) maintaining the formation of the layer of iron oxide under dry air environment;D) removing the manganese oxide by treatment with acidic liquid at high temperature to form a porous manganese ion-doped iron oxide nanoparticles having a central cavity which is at least one of the shapes selected from the group consisting of octahedral and cross shapes; andE) coating the nanoparticles with a biocompatible polymer.36. The method for producing an MRI contrast agent according to claim 35 , wherein the acidic liquid used in removing the manganese oxide phase is at least one selected from the group consisting of organic acids such as oleic acid and palmitic acid claim 35 , and acidic buffers.37. The method for producing an MRI contrast agent according to claim 35 , wherein the biocompatible polymer is at least one selected from the group consisting of biopolymers such as chitosan claim 35 , elastin claim 35 , hyaluronic acid claim 35 , ...

Подробнее
Номер записи: 19
11-01-2018 дата публикации

HYBRID NANOSTRUCTURED PHOTOCATALYSTS AND PREPARATION METHOD THEREOF

Номер: US20180008967A1
Автор: KIM Woosik, SHAHZAD Aasim, YI Minyoung, Yu Taekyung
Принадлежит:

The present invention relates to a hybrid nanostructured photocatalyst, comprising a first nanoparticle comprising silver halide (AgX); a second nanoparticle, which is formed on an outer surface of the first nanoparticle and comprises Ag; and a polymer formed on any one outer surface of the first nanoparticle and the second nanoparticle, and a preparation method thereof. Specifically, the present invention provides a hybrid nanostructured photocatalyst having a high photocatalytic activity in a visible light region and a preparation method thereof. 1. A hybrid nanostructured photocatalyst , comprising:a first nanoparticle comprising silver halide (AgX), wherein X is any of Cl, Br, and I;multiple second nanoparticles in a dendritic form on an outer surface of the first nanoparticle and comprising Ag; anda polymer formed on any one outer surface of the first nanoparticle and the multiple second nanoparticles.2. The hybrid nanostructured photocatalyst of claim 1 , wherein the first nanoparticle has at least one shape selected from the group consisting of a semi-sphere claim 1 , a sphere claim 1 , a truncated-cube claim 1 , and a cube.3. The hybrid nanostructured photocatalyst of claim 1 , wherein the second nanoparticle is formed on the outer surface of the first nanoparticle claim 1 , and the shape of the hybrid nanostructured photocatalyst is formed to correspond to the shape of the first nanoparticle.4. The hybrid nanostructured photocatalyst of claim 1 , wherein at least a part of the first nanoparticle and the second nanoparticle has a crystal structure.5. The hybrid nanostructured photocatalyst of claim 1 , wherein at least a part of the first nanoparticle and the second nanoparticle has a face-centered cubic structure.6. The hybrid nanostructured photocatalyst of claim 1 , wherein the photocatalyst has a band gap energy of 2.0 eV to 3.0 eV and a photocatalytic activity in a visible light region.7. (canceled)8. The hybrid nanostructured photocatalyst of claim 1 , ...

Подробнее
Номер записи: 20
14-01-2021 дата публикации

METHOD

Номер: US20210008526A1
Автор: Paterson William
Принадлежит: PolyCatUK Ltd.

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

Подробнее
Номер записи: 21
14-01-2021 дата публикации

Nano-sized functional binder

Номер: US20210008533A1
Автор: Brian Todd JONES, Gary A. Gramiccioni, Jaya L. Mohanan, John K. Hochmuth, Kenneth R. Brown
Принадлежит: BASF Corp

Described are catalytic articles comprising a substrate having a washcoat on the substrate, the washcoat containing a catalytic component having a first average (D50) particle size and a functional binder component having a second average (D50) particle size in the range of about 10 nm to about 1000 nm, wherein the ratio of the first average (D50) particle size to the second average (D50) particle size is greater than about 10:1. The catalytic articles are useful in methods and systems to purify exhaust gas streams from an engine.

Подробнее
Номер записи: 22
10-01-2019 дата публикации

Compositions for Passive NOx Adsorption (PNA) Systems and Methods of Making and Using Same

Номер: US20190009244A1
Автор: Biberger Maximilian A., KEARL Bryant, QI XIWANG, Yin Qinghua
Принадлежит:

The present disclosure relates to a substrate containing passive NOadsorption (PNA) materials for treatment of gases, and washcoats for use in preparing such a substrate. Also provided are methods of preparation of the PNA materials, as well as methods of preparation of the substrate containing the PNA materials. More specifically, the present disclosure relates to a coated substrate containing PNA materials for PNA systems, useful in the treatment of exhaust gases. Also disclosed are exhaust treatment systems, and vehicles, such as diesel or gasoline vehicles, particularly light-duty diesel or gasoline vehicles, using catalytic converters and exhaust treatment systems using the coated substrates. 1225-. (canceled)226. A vehicle comprising:a catalytic converter comprising a Passive NOx Adsorber (PNA) layer comprising nano-sized platinum group metal (PGM) on a plurality of support particles comprising cerium oxide, wherein the amount of cerium oxide in the PNA layer is from about 50 g/L to about 400 g/L.227. The vehicle of claim 226 , wherein the plurality of support particles are micron-sized or the plurality of support particles are nano-sized.228. The vehicle of claim 226 , wherein the plurality of support particles further comprise zirconium oxide claim 226 , lanthanum oxide claim 226 , yttrium oxide claim 226 , or a combination thereof.229. The vehicle of claim 228 , wherein the plurality of support particles comprise HSA5 claim 228 , HSA20 claim 228 , or a mixture thereof.230. The vehicle of claim 226 , wherein the nano-sized PGM on the plurality of support particles comprise composite nano-particles claim 226 , wherein the composite nano-particles comprise a support-nanoparticle and a PGM nano-particle.231. The vehicle of claim 230 , wherein the composite nano-particles are bonded to micron-sized carrier particles to form nano-on-nano-on-micro (NNm) particles.232. The vehicle of claim 230 , wherein the composite nano-particles are embedded within carrier ...

Подробнее
Номер записи: 23
10-01-2019 дата публикации

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

Номер: US20190009253A1
Автор: Beom Sik Kim, Iljeong Heo, Jeong Kwon Suh, Ji Hoon Park, Ji Na Choi, Soo Min KIM, Tae Sun Chang, YUN Ho Jeong
Принадлежит: Korea Research Institute of Chemical Technology KRICT, NF CO Ltd

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.

Подробнее
Номер записи: 24
10-01-2019 дата публикации

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

Номер: US20190009261A1
Автор: Chi Lifeng, HE Fei, LI Ying, Lv Nan, NI Caihua, Shi Gang, Wang Dawei
Принадлежит:

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

Подробнее
Номер записи: 25
08-01-2015 дата публикации

FLOW SYSTEM METHOD FOR PREPARING SUBSTANTIALLY PURE NANOPARTICLES, NANOPARTICLES OBTAINED BY THIS METHOD AND USE THEREOF

Номер: US20150011655A1
Автор: JURCZAKOWSKI Rafal, KULBOKA Pawel, LEWERA Adam
Принадлежит:

The invention relates to a method of synthesis of substantially pure nanoparticles in a continuous-flow system, in which a precursor substance solution undergoes reduction reaction using a reducing agent solution and nanoparticles are produced, wherein the reduction reaction is terminated by adding an agent neutralizing the reducing agent and a stable nanoparticle colloid is produced. In the method of the invention a need for using surfactants or other organic molecules for nanoparticle stabilization has been eliminated. 1. A method of synthesis of pure nanoparticles , on surface of which neither surfactants nor other organic molecules are adsorbed , of controlled size in a continuous-flow system , wherein the said continuous-flow system comprises tubing , in which the stream or reagents and products flows in a continuous manner , and wherein the said method comprises at least one step , in which a precursor substance solution undergoes the reduction reaction using a reducing agent solution and nanoparticles are produced , characterized in that the reduction reaction is terminated after the last step by adding a substance neutralizing the reducing agent and a nanoparticle colloid is produced.2. The method of claim 1 , wherein the method comprises one step claim 1 , in which the precursor substance solution undergoes the reduction reaction using the reducing agent solution and homogeneous nanoparticles are obtained.3. The method of claim 1 , wherein the method comprises at least two steps claim 1 , in which the precursor substance solution undergoes the reduction reaction using the reducing agent solution and layered nanoparticles of core-shell type are obtained.4. The method of claim 1 , wherein the precursor substance is a metal precursor or a mixture of metal precursors.5. The method of claim 1 , wherein the metal precursor is a metal salt or a mixture of different metal salts.6. The method of claim 1 , wherein the metal is selected from a group comprising ...

Подробнее
Номер записи: 26
03-02-2022 дата публикации

CATALYST FOR PREPARING SYNTHETIC GAS, METHOD FOR PREPARING THE SAME, AND METHOD FOR PREPARING SYNTHETIC GAS USING THE SAME

Номер: US20220032281A1
Автор: BAE Jong Wook, Choung Jin Woo, Jeong Haeun, Kwon Jaehyeon, Park Kyung Soo, Yu Ji Su
Принадлежит:

Disclosed are a catalyst for preparing a synthetic gas through dry reforming, a method preparing the catalyst, and a method using the catalyst for preparing the synthetic gas. The catalyst may include: a support including regularly distributed mesopores; metal nanoparticles supported on the support; and a metal oxide coating layer coated on a surface of the support. 1. A catalyst for preparing a synthetic gas through dry reforming , comprising:a support including regularly distributed mesopores;metal nanoparticles supported on the support; anda metal oxide coating layer coated on a surface of the support.2. The catalyst for preparing the synthetic gas of claim 1 , wherein the support comprises one or more selected from the group consisting of poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) claim 1 , polyethylene oxide (PEO) claim 1 , polypropylene oxide (PPO) claim 1 , SiO claim 1 , AlO claim 1 , MgO claim 1 , MgAlO claim 1 , LaO claim 1 , CeO claim 1 , ZrO claim 1 , SiC claim 1 , an indium tin oxide (ITO) claim 1 , and a fluorine doped tin oxide (FTO).3. The catalyst for preparing the synthetic gas of claim 1 , wherein the support comprises one or more selected from the group consisting of MCM-41 claim 1 , MCM-48 claim 1 , SBA-1 claim 1 , SBA-15 claim 1 , SBA-16 claim 1 , KIT-1 claim 1 , KIT-6 claim 1 , MSU-1 claim 1 , HMS claim 1 , AMS-8 claim 1 , AMS-10 claim 1 , FDU-1 claim 1 , FDU-2 claim 1 , and FDU-12.4. The catalyst for preparing the synthetic gas of claim 1 , wherein the metal nanoparticles comprises one or more selected from the group consisting of Ni claim 1 , Fe claim 1 , Cu claim 1 , Co claim 1 , Mo claim 1 , Ru claim 1 , Rh claim 1 , Pd claim 1 , Ag claim 1 , Cd claim 1 , Zn claim 1 , Au claim 1 , Pt claim 1 , Ir claim 1 , Os claim 1 , W claim 1 , and an oxide thereof.5. The catalyst for preparing the synthetic gas of claim 1 , wherein a diameter of the metal nanoparticles is about 10 nm or less.6. The catalyst for preparing the ...

Подробнее
Номер записи: 27
19-01-2017 дата публикации

METHOD FOR THE SYNTHESIS OF SUPPORTED GOLD (AU) NANOPARTICLES FOR EPOXIDATION REACTIONS

Номер: US20170014805A1
Автор: Al-Hazmi Mohammed H.
Принадлежит:

Processes for preparing supported gold nanoparticle catalysts are provided. In an exemplary embodiment, the process includes adding a solution of a phosphorus compound to a solution of chloro (dimethyl sulfide) gold (I) to obtain a solution of chloro (phosphorus compound) gold (I) complex, adding the solution of chloro (phosphorus compound) gold (I) complex to a solution of silver nitrate to obtain a solution of nitro (phosphorus compound) gold (I) complex, applying the solution of nitro (phosphorus compound) gold (I) complex to a metal hydroxide support, drying the metal hydroxide support; and calcining the dried metal hydroxide support to form the supported gold nanoparticle catalyst. Supported gold nanoparticle catalysts prepared by the process and processes for oxidizing ethylene to ethylene oxide in the presence of the supported gold nanoparticle catalysts are also provided. 1. A process for preparing a supported gold nanoparticle catalyst , the process comprising: [{'sub': 1', '2', '3', '4', '5', '6', '7', '8', '9', '10', '11', '12, 'wherein the phosphorus compound is selected from the group consisting of a phosphine having a formula of PRRR, a phosphinite having a formula of P(OR)RR, a phosphonite having a formula of P(OR)(OR)R, a phosphite having a formula of P(OR)(OR)(OR), or a combination comprising at least one of the foregoing; and'}, {'sub': 1', '12, 'wherein Rto Rare each independently an alkyl, substituted alkyl, aryl, substituted aryl, aralkyl, substituted aralkyl, or a combination comprising at least one of the foregoing;'}], 'adding a solution of a phosphorus compound to a solution of chloro (dimethyl sulfide) gold (I) to obtain a solution of chloro (phosphorus compound) gold (I) complex,'}adding the solution of chloro (phosphorus compound) gold (I) complex to a solution of silver nitrate to obtain a solution of nitro (phosphorus compound) gold (I) complex;applying the solution of nitro (phosphorus compound) gold (I) complex to a metal hydroxide ...

Подробнее
Номер записи: 28
19-01-2017 дата публикации

Preparation method of fluorine-doped lamellar black titanium dioxide nano material

Номер: US20170014811A1
Автор: Bixia XIE, Jiewei Chen, Meicheng LI, Ruike LI, Wenjian LIU, Yancong HE
Принадлежит: NORTH CHINA ELECTRIC POWER UNIVERSITY

The method for preparing fluorine-doped lamellar black TiO 2 nanomaterials includes mixing a solution of tetra-n-butyl titanate, n-propanol and hydrofluoric acid together, and then stir the solutions for a period of time. The solution is transferred into an autoclave and reacts at a certain temperature for a period of time. The sample obtained by the reaction is washed and dried. Then, the sample is heated in a protective atmosphere for a period of time so as to produce the fluorine-doped lamellar black TiO 2 nanomaterials. This fluorine-doped lamellar black TiO 2 owns superior optical absorption and electron transport performances.

Подробнее
Номер записи: 29
19-01-2017 дата публикации

LIQUID COMPOSITION FOR FORMING SILICA POROUS FILM AND SILICA POROUS FILM FORMED FROM SUCH LIQUID COMPOSITION

Номер: US20170015561A1
Автор: Higano Satoko, Masuyama Koutaro, Yamasaki Kazuhiko
Принадлежит:

A liquid composition for forming a silica porous film of the invention is prepared by mixing a hydrolyzate of tetramethoxysilane or tetraethoxysilane as a silicon alkoxide with a silica sol in which fumed silica particles having primary particles having a mean particle diameter of 40 nm or less and secondary particles having a mean particle diameter of 20 nm to 400 nm, that is greater than the mean particle diameter of the primary particles, are dispersed in a liquid medium, in which the mass ratio (AB) of the SiOcontent (B) of the silica sol to the SiOcontent (A) in the hydrolyzate is in a range of 1/99 to 60/40. 1. A liquid composition for forming a silica porous film which is prepared by mixing a hydrolyzate of tetramethoxysilane or tetraethoxysilane as a silicon alkoxide with a silica sol in which fumed silica particles having primary particles having a mean particle diameter of 40 nm or less and secondary particles having a mean particle diameter of 20 nm to 400 nm , that is greater than the mean particle diameter of the primary particles , are dispersed in a liquid medium ,{'sub': 2', '2, 'wherein a mass ratio (A/B) of a SiOcontent (B) of the silica sol to a SiOcontent (A) in the hydrolyzate is in a range of 1/99 to 60/40.'}2. A silica porous film forming method of forming a silica porous film using the liquid composition according to claim I.3. A silica porous film comprising:fumed silica particles having primary particles having a mean particle diameter of 40 nm or less and secondary particles having a mean particle diameter of 20 nm to 400 nm, that is greater than the mean particle diameter of the primary particles; and{'sub': '2', 'an amorphous SiOcomponent existing between the fumed silica particles or between a coating film and a substrate,'}wherein a mean hole diameter of the film is in a range of 10 nm to 200 nm.4. The silica porous film forming method according to claim 2 , comprising the steps of:coating a substrate with the liquid composition; ...

Подробнее
Номер записи: 30
18-01-2018 дата публикации

HALOMETALLATE IONIC LIQUID MICRO-EMULSIONS

Номер: US20180015448A1
Автор: Abrevaya Hayim, Buchbinder Avram M., Towler Gavin P.
Принадлежит:

A micro-emulsion and a method of making the micro-emulsion are described. The micro-emulsion composition includes more than about 50 vol % of an oil phase and polar structures. The oil phase comprises a hydrocarbon component and a co-solvent, and the polar structures comprise an ionic liquid. The ionic liquid comprises a halometallate anion and a cation which is at least slightly soluble in the hydrocarbon component or in the co-solvent. The micro-emulsion can optionally include a surfactant, and a catalyst promoter. The co-solvent has a polarity greater than the polarity of the hydrocarbon, and the co-solvent is miscible in the hydrocarbon. 1. A micro-emulsion comprising:an oil phase comprising:a hydrocarbon and a co-solvent, the hydrocarbon having a polarity, the co-solvent having a polarity greater than the polarity of the hydrocarbon, the co-solvent being miscible in the hydrocarbon;polar structures comprising an ionic liquid, the ionic liquid comprising a halometallate anion and a cation, the ionic liquid being at least slightly soluble in the oil phase;an optional surfactant; andan optional catalyst promoter;the oil phase comprising at least about 50 vol % of the micro-emulsion.2. The micro-emulsion of wherein the polar structures comprise reverse micelles suspended in the oil phase.3. The micro-emulsion of wherein more than about 90% of the reverse micelles a have diameter less than about 100 nanometers.4. The micro-emulsion of wherein when the surfactant is present claim 2 , more than about 90% of the reverse micelles have a diameter in a range of about 5 nanometers to about 100 nanometers.5. The micro-emulsion of claim 1 , wherein the composition contains less than 300 wppm of water.6. The micro-emulsion of wherein the cation of the ionic liquid comprises a tetraalkyl phosphonium cation claim 1 , a dialkylimidazolium cation claim 1 , an alkylimidazolium cation claim 1 , a dialkylimidazolium cation claim 1 , a pyridinium cation claim 1 , an alkyl pyridinium ...

Подробнее
Номер записи: 31
18-01-2018 дата публикации

METHOD OF PRODUCING METALLIC NANO PARTICLE COLLOIDAL DISPERSIONS

Номер: US20180015537A1
Автор: Reed Kenneth J.
Принадлежит:

The present process provides a method for synthesizing difficult to make oxide-free nanometals and such as Zn, Sn and Ti and alloys of the period 4 and 5 transition metal elements in a free and reduced state using a solution phase synthesis process. Also provided is a method for stabilizing their associated colloidal metal and alloy dispersions under kinetic control at modest temperatures (<80 degrees Celsius). A solution of an organic reducing agent containing at least two proximal nitrogen atoms is reacted with a separate solution containing one or more metal-organic salts dissolved in the same or different low molecular weight solvent as the reducing agent. The reaction products are stabilized with Lewis bases and Lewis acids and optionally can be concentrated by removing a portion of the volatile low molecular weight solvent by either the use of a partial vacuum or by chemical extraction into another phase. 1. A stable , fully reduced metallic nanoparticle-containing colloidal dispersion in which the nanoparticle is a pure metal , a metal nano-alloy or a metal core-shell particle with a uniform and mean particle size less than 2.9 nm synthesized by a facile , low temperature solvent process comprising the steps of:forming a salt charge transfer complex of metal cations (CT complex) of an amino alcohol or diamine moiety with a metal salt;reacting the CT complex with a solution comprising a two or three nitrogen atom-containing organic reducing agent to form metallic nanoparticles; andstabilizing the metallic nanoparticles with aniline or a bi-dentate hetero atom containing amine stabilizer (Lewis base) to form the stable, fully reduced metallic nanoparticle-containing colloidal dispersion, the CT complex results from the reaction of a metallic formate, acetate, alkoxide or citrate salt dissolved in at least two solvents selected from the group consisting of monoethanolamine, di-ethanolamine, tri-ethanolamine, 1,2-aminopropanol, 1,3-aminopropanol, or combinations ...

Подробнее
Номер записи: 32
17-01-2019 дата публикации

DIESEL OXIDATION CATALYST COMPRISING PLATINUM GROUP METAL NANOPARTICLES

Номер: US20190015781A1
Автор: ROTH Stanley, Wei Xinyi, Xu Xiaoming
Принадлежит:

The present invention relates to diesel oxidation catalyst compositions and catalyst articles, wherein the compositions and articles include a plurality of platinum group nanoparticles substantially in fully reduced form, wherein the nanoparticles have an average particle size of about 1 to about 10 nm and at least about 90% of the nanoparticles have a particle size of +/− about 2 nm of the average particle size. Such compositions can further include a refractory metal oxide material, wherein the nanoparticles and refractory metal oxide material can be combined within the same coating on a substrate or can be applied sequentially on a substrate. The nanoparticles can advantageously be substantially free of halides, alkali metals, alkaline earth metals, sulfur compounds, and boron compounds. Methods of preparing and using such compositions and catalyst articles (e.g., for the treatment of diesel exhaust gas streams) are also provided herein. 1. A diesel oxidation catalyst composition , the composition comprising: wherein about 90% or more of the platinum group metal is in fully reduced form,', 'wherein the nanoparticles have an average particle size of about 1 to about 10 nm and at least about 90% of the nanoparticles have a particle size of +/− about 2 nm of the average particle size; and, optionally, a refractory metal oxide material., 'a plurality of platinum group metal nanoparticles selected from the group consisting of Pt, Pd, Au, Ag, Ru, Rh, Jr, Os, alloys thereof, and mixtures thereof,'}2. The diesel oxidation catalyst composition of claim 1 , wherein at least about 90% of the nanoparticles have a particle size +/− about 1 nm of the average particle size.3. The diesel oxidation catalyst composition of claim 1 , wherein at least about 95% of the nanoparticles have a particle size +/−2 nm of the average particle size.4. The diesel oxidation catalyst composition of claim 1 , wherein at least about 95% of the nanoparticles have a particle size +/− about 1 nm of ...

Подробнее
Номер записи: 33
17-01-2019 дата публикации

CATALYST, STRUCTURES, REACTORS, AND METHODS OF FORMING SAME

Номер: US20190015825A1
Автор: Moulton Staci A., Weimer Alan W.
Принадлежит:

Structures, catalysts, and reactors suitable for use for a variety of applications, including gas-to-liquid and coal-to-liquid processes and methods of forming the structures, catalysts, and reactors are disclosed. The catalyst material can be deposited onto an inner wall of a microtubular reactor and/or onto porous support structures using atomic layer deposition techniques. 1. A catalyst structure comprising:a support structure having a surface comprising one or more crystalline regions; and{'sup': '2', 'a crystalline catalyst layer formed overlying the one or more crystalline regions, wherein the support structure has a surface area greater than or equal to 50 m.'}2. The catalyst support structure of claim 1 , wherein the crystalline catalyst layer is deposited onto the support structure using ALD.3. The catalyst support structure of claim 1 , wherein the support structure comprises an oxide.4. The catalyst support structure of claim 1 , wherein the support structure comprises heat-conductive material.5. The catalyst support structure of claim 1 , wherein the support structure comprises one or more of gamma alumina claim 1 , delta alumina claim 1 , theta alumina claim 1 , and alpha alumina.6. The catalyst support structure of claim 1 , wherein the support structure comprises ALD deposited material terminated with organic material.7. The catalyst support structure of claim 1 , wherein the support structure comprises a carbon-containing protective layer.8. A method of forming a catalyst claim 1 , the method comprising the steps of:forming an oxide support structure;heat treating the oxide support structure to form one or more crystalline regions; andforming a catalyst layer overlying the one or more crystalline regions, wherein the catalyst layer comprises crystalline planes.9. The method of claim 8 , wherein the support structure has a surface area greater than or equal to 50 m.10. The method of claim 8 , wherein the step of forming comprises ALD deposition.11. ...

Подробнее
Номер записи: 34
17-01-2019 дата публикации

METHOD OF PRODUCING METALLIC NANO PARTICLE COLLOIDAL DISPERSIONS

Номер: US20190015896A1
Автор: Reed Kenneth J.
Принадлежит:

The present process provides a method for synthesizing difficult to make oxide-free nanometals and such as Zn, Sn and Ti and alloys of the period 4 and 5 transition metal elements in a free and reduced state using a solution phase synthesis process. Also provided is a method for stabilizing their associated colloidal metal and alloy dispersions under kinetic control at modest temperatures (<95 degrees Celsius). A solution of an organic reducing agent containing at least two proximal nitrogen atoms is reacted with a separate solution containing one or more metal-organic salts dissolved in the same or different low molecular weight solvent as the reducing agent. The reaction products are stabilized with Lewis bases and Lewis acids and optionally can be concentrated by removing a portion of the volatile low molecular weight solvent by either the use of a partial vacuum or by chemical extraction into another phase. 1. A process for producing a stable , fully reduced metallic nanoparticle-containing colloidal dispersion with a uniform and mean particle size less than about 5 nm which comprises the steps of:forming a metallic salt charge transfer complex (CT complex) of an amino alcohol or diamine moiety with a metallic salt;reacting the CT complex with a solution comprising a two or three nitrogen atom-containing organic reducing agent to form metallic particles; andstabilizing the metallic particles with aniline or a bi-dentate hetero atom containing a Lewis Base amine stabilizer to form the stable, fully reduced metallic nanoparticle-containing colloidal dispersion,wherein:the CT complex results from the reaction of a metallic formate, acetate, alkoxide or citrate salt dissolved in at least two solvents selected from the group consisting of water, monoethanolamine, di-ethanolamine, tri-ethanolamine, 1,2-aminopropanol, 1,3-aminopropanol, and combinations thereof;the two or three nitrogen atom containing reducing agent is selected from the group consisting of ...

Подробнее
Номер записи: 35
17-01-2019 дата публикации

METAL-BASED STRUCTURE OR NANOPARTICLES CONTAINING HYDROGEN, AND METHOD FOR PRODUCING SAME

Номер: US20190016595A1
Автор: Shinozaki Kazuteru, Taguchi Kohei, TAKAYASU Satoshi
Принадлежит:

To provide a metal-based structure or nanoparticles whose homogeneity is not deteriorated and whose sticking formation is easy, and a production method thereof with a high safety. A metal-based structure comprises a hydrogen compound, cluster, or an aggregate thereof, represented by the general formula: MH. The M is a metal-based atom. The m is an integer of 3 or more and 300 or less. H is a hydrogen atom. 1. A metal-based structure comprising a hydrogen compound , a cluster , or an aggregate thereof , represented by the general formula:{'br': None, 'sub': 'm', 'MH'}whereinM is a metal-based atom;m is an integer of 3 or more and 300 or less; andH is a hydrogen atom.2. The metal-based structure according to claim 1 , wherein m is any of 4 claim 1 , 6 claim 1 , 8 claim 1 , 12 claim 1 , 20 claim 1 , or 30.3. The metal-based structure according to claim 1 , further comprising a metal-based amorphous phase which is amorphized by containing hydrogen.4. The metal-based structure according to claim 1 , wherein at least a part of the hydrogen are non-diffusible hydrogen which is contained in the metal-based structure after the metal-based structure is heated at 200° C. for 2 minutes.5. The metal-based structure according to claim 1 , wherein the metal-based structure further comprises an amorphous phase at least in part.6. The metal-based structure according to claim 5 , wherein the amorphous phase contains hydrogen.7. The metal-based structure according to claim 1 , further comprising a metal as a main component claim 1 , whereinthe metal is a ferromagnetic substance.8. The metal-based structure according to claim 1 , wherein the metal-based structure comprises a metal element as a main component.9. The metal-based structure according to claim 8 , wherein the metal element comprises a single element.10. The metal-based structure according to claim 1 , wherein the metal-based structure contains iron.11. The metal-based structure according to claim 1 , whereinthe hydrogen ...

Подробнее
Номер записи: 36
16-01-2020 дата публикации

Dinuclear rhodium complex-doped platinum/hollow mesoporous silica sphere composite material, and preparation method and application thereof

Номер: US20200016575A1
Автор: Dongyun Chen, Jianmei Lu
Принадлежит: SUZHOU UNIVERSITY

The invention discloses a dinuclear rhodium complex-doped platinum/hollow mesoporous silica sphere composite material, and a preparation method and an application thereof. The preparation method comprises the following steps: preparing hollow mesoporous silica by a selective etching technology, uniformly distributed a precious metal platinum in the channels of the hollow mesoporous silica by using simple impregnation, and mixing the obtained catalyst with dinuclear rhodium complex adsorbed silica gel to obtain the composite material integrating a chromogenic probe with the catalyst. The preparation method is simple, and the chromogenic performance of the dinuclear rhodium complex material and catalysis performance of the catalyst can achieve simultaneous detection and catalyst of CO; and the dinuclear rhodium complex has obvious response to CO, and has chromogenic change in the presence of 50 ppm CO, and the product prepared through the preparation method has excellent CO detection and treatment properties, and highly facilitates industrial application.

Подробнее
Номер записи: 37
21-01-2021 дата публикации

Halloysite-based nanocomposites and methods of making and using the same

Номер: US20210016250A1
Автор: Hamdi Jumanah, Trudell Mark L., Wiley John B.
Принадлежит: University of New Orleans

This invention is directed to transition metal-based-halloysite nanocomposites and methods of making and using the same. 1. A halloysite-based nanocomposite , the nanocomposite comprising transition metal-nanoparticles embedded upon the internal surface of the halloysite nanotube.2. The nanocomposite of claim 1 , wherein the internal diameter of the halloysite nanotube is less than about 40 nm.3. The nanocomposite of claim 1 , wherein the size of the nanoparticle is less than about 40 nm.4. The nanocomposite of claim 1 , wherein the transition metal comprises a metal of any one of groups 3-12 of the period table.5. The nanocomposite of claim 1 , wherein the transition metal comprises a metal of any one of groups 8-11 of the periodic table6. The nanocomposite of claim 1 , wherein the transition metal comprises a metal of group 10 of the period table.7. The nanocomposite of claim 1 , wherein the transition metal comprises copper (Cu) claim 1 , palladium (Pd) claim 1 , Iridium (Ir) claim 1 , rhodium (Rh) claim 1 , ruthenium (Ru) claim 1 , silver (Ag) claim 1 , osmium (Os) claim 1 , platinum (Pt) or any combination thereof.8. The nanocomposite of claim 1 , wherein the transition metal comprises a transition metal alloy.9. The nanocomposite of claim 1 , wherein the nanocomposite catalyzes the formation of C—O bonds claim 1 , C—H bonds claim 1 , C—C bonds claim 1 , C—N bonds claim 1 , or both.10. A transition metal catalyst system claim 1 , wherein the transition metal catalyst system comprises the halloysite-based nanocomposite of .11. The transition metal catalyst system of claim 10 , further comprising a solvent and a base.12. Method of making a halloysite-based nanocomposite claim 10 , the method comprising:providing a transition metal nanoparticle; andencapsulating the transition metal nanoparticle within a halloysite nanotube,wherein the nanoparticle is embedded upon the internal surface of the halloysite nanotube.13. The method of claim 12 , wherein the transition ...

Подробнее
Номер записи: 38
21-01-2021 дата публикации

FUNCTIONAL NANOSCALE METAL OXIDES FOR STABLE METAL SINGLE ATOM AND CLUSTER CATALYSTS

Номер: US20210016256A1
Автор: LI Xu, Liu Jingyue
Принадлежит:

A nanocomposite catalyst includes a support, a multiplicity of nanoscale metal oxide clusters coupled to the support, and one or more metal atoms coupled to each of the nanoscale metal oxide clusters. Fabricating a nanocomposite catalyst includes forming nanoscale metal oxide clusters including a first metal on a support, and depositing one or more metal atoms including a second metal on the nanoscale metal oxide clusters. The nanocomposite catalyst is suitable for catalyzing reactions such as CO oxidation, water-gas-shift, reforming of COand methanol, and oxidation of natural gas. 1. A nanocomposite catalyst comprising:a support;a multiplicity of nanoscale metal oxide clusters coupled to the support; andone or more metal atoms coupled to each of the nanoscale metal oxide clusters.2. The catalyst of claim 1 , wherein the support comprises a refractory material having a surface area of at least 50 m/g or at least 100 m/g.3. The catalyst of claim 2 , wherein the support comprises silica claim 2 , alumina claim 2 , magnesia claim 2 , zirconia claim 2 , cordierite claim 2 , mullite claim 2 , perovskite or any combination thereof.4. The catalyst of claim 2 , wherein the support is powdered.5. The catalyst of claim 1 , wherein the nanoscale metal oxide clusters comprise CeO claim 1 , CoO claim 1 , FeOTiO claim 1 , CuO claim 1 , NiO claim 1 , MO claim 1 , NbO claim 1 , ZrOor any combination thereof.6. The catalyst of claim 5 , wherein the nanoscale metal oxide clusters comprise CeO claim 5 , COO claim 5 , FeO claim 5 , TiO claim 5 , CuO claim 5 , NiO claim 5 , MnO claim 5 , NbO claim 5 , ZrOor any combination thereof.7. The catalyst of claim 1 , wherein the one or more metal atoms independently comprise one or more transition metal atoms.8. The catalyst of claim 7 , wherein the one or more metal atoms independently comprise one or more precious metal atoms.9. The catalyst of claim 8 , wherein the one or more metal atoms comprise Pt claim 8 , Pd claim 8 , Rh claim 8 , Au ...

Подробнее
Номер записи: 39
28-01-2016 дата публикации

Chemical method catalysed by ferromagnetic nanoparticles

Номер: US20160023201A1
Автор: Anca MEFFRE, Boubker MEHDAOUI, Bruno Chaudret, Julian Carrey, Marc RESPAUD, Pier Francesco FAZZINI, Sebastien LACHAIZE, Vinciane Kelsen
Принадлежит: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS, Institut National Des Sciences Appliquees De Toulouse, UNIVERSITE PAUL SABATIER TOULOUSE III

A method for the heterogeneous catalysis of a chemical reaction using, in a reactor, at least one reagent and a catalytic composition that can catalyze the reaction within a given range of temperatures T. At least one reagent is brought into contact with the catalytic composition which includes a ferromagnetic nanoparticulate component whose surface is formed at least partially by a compound that is a catalyst for the reaction; the nanoparticulate component is heated by magnetic induction in order to reach a temperature within the range of temperatures T; and the reaction product(s) formed on the surface of the nanoparticulate component are recovered. A catalytic composition includes a ferromagnetic nanoparticulate component that can be heated by magnetic induction to the reaction temperature, whose surface thereof is at least partially formed by a catalyst compound for the reaction. The catalyst is heated by the effect of the magnetic field.

Подробнее
Номер записи: 40
26-01-2017 дата публикации

GLASS ARTICLE PROVIDED WITH PHOTOCATALYST FILM, PROCESS FOR PRODUCING GLASS ARTICLE, AND COATING LIQUID

Номер: US20170021335A1
Автор: Kawazu Mitsuhiro, KONDO Fumiyoshi, YABUTA Takeshi
Принадлежит:

The present invention provides a glass article including a photocatalyst film containing silicon oxide particles and titanium oxide particles and a glass sheet Assuming that the photocatalyst film has a film thickness T, 80% or more of the titanium oxide particles are localized in a region between a surface of the glass sheet and a position spaced from the surface by 0.6 T toward a surface of the photocatalyst film in a thickness direction of the photocatalyst film The glass article has an increased transmittance provided by enhancing the reflection-reducing function of the photocatalyst film while maintaining the film strength and photocatalytic function of the photocatalyst film 13-. (canceled)4. A glass article comprising a glass sheet and a photocatalyst film formed on a surface of the glass sheet , whereinthe photocatalyst film contains silicon oxide particles, titanium oxide particles, and a binder material whose main component is silicon oxide,the silicon oxide particles are contained in an amount of 72 to 79 mass %, the titanium oxide particles are contained in an amount of 13 to 18 mass %, and the binder material is contained in an amount of 8 to 12 mass %, with respect to a total amount of the silicon oxide particles, the titanium oxide particles, and the binder material,the silicon oxide particles have an average particle diameter of 50 nm to 150 nm, the titanium oxide particles have an average particle diameter of 5 nm to 20 nm, and the average particle diameter of the silicon oxide particles is five times or more of the average particle diameter of the titanium oxide particles, andassuming that the photocatalyst film has a film thickness T, 80% or more of the titanium oxide particles are present between the surface of the glass sheet and a position spaced from the surface of the glass sheet by 0.6 T toward a surface of the photocatalyst film in a thickness direction of the photocatalyst film.5. The glass article according to claim 4 , wherein the ...

Подробнее
Номер записи: 41
25-01-2018 дата публикации

Platinum group metal (pgm) catalysts for automotive emissions treatment

Номер: US20180021756A1
Автор: Andreas Sundermann, Andrey Karpov, David PRELI, Knut Wassermann, PING Lu, Sang-Ii Choi, Younan Xia
Принадлежит: BASF Corp, Georgia Tech Research Corp

Catalytic materials for exhaust gas purifying catalyst composites comprise platinum group metal (PGM)-containing catalysts whose PGM component(s) are provided as nanoparticles and are affixed to a refractory metal oxide, which may be provided as a precursor. Upon calcination of the catalysts, the PGM is thermally affixed to and well-dispersed throughout the support. Excellent conversion of hydrocarbons and nitrogen oxides can advantageously be achieved using such catalysts.

Подробнее
Номер записи: 42
25-01-2018 дата публикации

RHODIUM-CONTAINING CATALYSTS FOR AUTOMOTIVE EMISSIONS TREATMENT

Номер: US20180021757A1
Автор: Choi Sang-Il, KARPOV Andrey, Preli David, SUNDERMANN Andreas, WASSERMANN Knut, Xia Younan
Принадлежит:

Catalytic materials, and in particular, rhodium-containing catalytic materials for exhaust gas purifying catalyst composites are provided herein. Such materials comprise multimetallic Rh-containing nanoparticles, which are present primarily inside aggregated particles of a support (such as alumina). Such catalytic materials can exhibit excellent conversion of hydrocarbons and nitrogen oxides. 1. A catalytic material comprising:a porous refractory metal oxide support in the form of aggregated particles; anda plurality of rhodium-containing multimetallic nanoparticles, wherein at least about 50% by weight of the nanoparticles are located inside the aggregated particles of the support.2. The catalytic material of claim 1 , wherein at least about 90% by weight of the nanoparticles are located inside the aggregated particles of the support.3. The catalytic material of claim 1 , wherein the support comprises alumina.4. The catalytic material of claim 1 , wherein the rhodium-containing multimetallic nanoparticles comprise palladium-rhodium bimetallic nanoparticles.5. The catalytic material of claim 1 , wherein the average primary particle size of the rhodium-containing multimetallic nanoparticles is about 1 to about 20 nm as measured by Transmission Electron Microscopy (TEM).6. The catalytic material of claim 1 , wherein the rhodium-containing multimetallic nanoparticles are colloidally delivered and thermally affixed to the support to form the catalytic material.7. The catalytic material of claim 1 , wherein the average aggregated particle size of the support is about 1 micron or greater as measured by Scanning Electron Microscopy (SEM).8. The catalytic material of claim 1 , wherein an average primary particle size of the support is about 1 to about 100 nm as measured by Transmission Electron Microscopy (TEM).9. The catalytic material of claim 1 , wherein the support is colloidally delivered.10. The catalytic material of claim 1 , wherein the support is pre-calcined.11. ...

Подробнее
Номер записи: 43
25-01-2018 дата публикации

CERIUM-ZIRCONIUM COMPOSITE OXIDE, PREPARATION METHOD THEREFOR, AND APPLICATION OF CATALYST

Номер: US20180021759A1
Автор: Cui Meisheng, Hou Yongke, HUANG Xiaowei, Wang Lei, WANG Qi, Yue Mei, ZHONG Qiang
Принадлежит:

Provided are a cerium-zirconium composite oxide, a preparation method therefor and application of a catalyst. The cerium-zirconium composite oxide has a composite phase structure, and comprises a cerium oxide phase and a cerium-zirconium solid solution phase, or consists of two or more cerium-zirconium solid solution phases with different crystal structures and different chemical compositions, wherein the chemical formula of the cerium-zirconium solid solution phase is CeZrMO, where M is at least one selected from the group consisting of a rare earth element other than cerium, a transition metal element and an alkaline earth metal element, x is 15-85 mol %, and y is 0-20 mol %. 1. A cerium-zirconium composite oxide , wherein the cerium-zirconium composite oxide has a composite phase structure , and comprises a cerium oxide phase and a cerium-zirconium solid solution phase , wherein the chemical formula of the cerium-zirconium solid solution phase is CeZrMO , where M is at least one selected from the group consisting of a rare earth element other than cerium , a transition metal element and an alkaline earth metal element , x is 15˜85 mol % , and y is 0˜20 mol %.2. The cerium-zirconium composite oxide as claimed in claim 1 , wherein after the cerium-zirconium composite oxide is subjected to heat preservation at 1000° C. for 4 hours claim 1 , the cerium oxide phase has a proportion of 0.5˜30 vol % in the cerium-zirconium composite oxide claim 1 , preferably 3˜20 vol %.3. The cerium-zirconium composite oxide as claimed in claim 1 , wherein the cerium-zirconium composite oxide comprises cerium oxide needle-like particles and cerium-zirconium solid solution near-spherical particles claim 1 , and after being subjected to heat preservation at 1000° C. for 4 hours claim 1 , the cerium oxide needle-like particles have a diameter of 7˜20 nm and a length of 50˜300 nm claim 1 , the cerium-zirconium solid solution near-spherical particles have a diameter of 5˜30 nm claim 1 , and ...

Подробнее
Номер записи: 44
25-01-2018 дата публикации

SINGLE-STEP CONVERSION OF N-BUTYRALDEHYDE TO 2-ETHYLHEXANAL

Номер: US20180022676A1
Автор: BOPPANA Venkata Bharat, Hampton, JR. Charles Edwan, JR. Kenneth Wayne, LIU Zhufang, STEFFEY Melissa Page, Steinmetz Guy Ralph, Sumner, Tustin Gerald Charles
Принадлежит: EASTMAN CHEMICAL COMPANY

Disclosed is a method of making and using a titania supported palladium catalyst for the single step synthesis of 2-ethylhexanal from a feed of n-butyraldehyde. This titania supported palladium catalyst demonstrates high n-butyraldehyde conversion but also produces 2-ethylhexanal in an appreciable yield with maintained activity between runs. This method provides a single step synthesis of 2-ethylhexanal from n-butyraldehyde with a catalyst that can be regenerated that provides cleaner downstream separations relative to the traditional caustic route. 113.-. (canceled)15. The method according to claim 14 , wherein the reducing agent is about 10% hydrogen at about 20 SCCM in helium at about 180 SCCM.16. The method according to claim 14 , wherein the reducing agent is about 50% v/v methanol and about 50% v/v water.17. The method according to claim 14 , wherein the reducing agent is about 60% hydrazine and about 30% acetone.18. The method according to claim 15 , wherein the noble metal shells have a particle size of less than about 2 nm.19. The method according to claim 16 , wherein the noble metal shells have a particle size of less than about 5 nm.20. The method according to claim 17 , wherein the noble metal shells have a particle size of less than about 7 nm. This invention generally relates to a method for the preparation and use of an eggshell catalyst having palladium nanoparticles deposited on a titania solid support. Particularly, this invention seeks to optimize the single step conversion of n-butyraldehyde to 2-ethylhexanal through the synthesis and use of palladium nanoparticles on a titania support forming an eggshell catalyst.The custom design of a metal-supported catalyst is often determinative of process activity and selectivity in a reaction—crucial in almost every industrial process. Even minor adjustments to a catalyst or to catalyst synthesis conditions can drastically alter the catalytic properties, significantly impacting process activity and ...

Подробнее
Номер записи: 45
24-01-2019 дата публикации

HETEROGENEOUS CATALYSTS

Номер: US20190022626A1
Автор: Cizeron Joel M., Gamoras Joel, Rumplecker Anja, Schammel Wayne P., Scher Erik C., Zurcher Fabio R.
Принадлежит:

Heterogeneous catalysts with optional dopants are provided. The catalysts are useful in a variety of catalytic reactions, for example, the oxidative coupling of methane to C hydrocarbons. Related methods for use and manufacture of the same are also disclosed. 1. A catalyst comprising a mixed oxide base material , the mixed oxide comprising erbium (Er) and at least one further lanthanide element.2. The catalyst of claim 1 , wherein the mixed oxide comprises a physical blend of Er claim 1 , or an oxidized form thereof claim 1 , and the further lanthanide element claim 1 , or an oxidized form thereof.3. The catalyst of claim 1 , wherein the mixed oxide has the following formula (I):{'br': None, 'sub': x', 'y', 'z, 'LnErO\u2003\u2003 (I)'} Ln is the lanthanide element;', 'Er is erbium;', 'O is oxygen; and', 'x, y and z are each independently numbers greater than 0., 'wherein4. The catalyst of claim 3 , wherein x claim 3 , y and z are selected such that the overall charge of the catalyst is about 0.5. The catalyst of claim 3 , wherein x claim 3 , y and z are selected such that z is from 150% to 200% of the sum of x and y.6. The catalyst of claim 3 , wherein the mixed oxide is LnErOor LnErO.727-. (canceled)28. A bulk catalyst comprising a base material comprising an oxide of one or more lanthanide elements and a dopant combination selected from Sr/Ce claim 3 , Sr/Tb claim 3 , Sr/B and Sr/Hf/K.29. The catalyst of claim 28 , wherein the oxide has the following formula (III):{'br': None, 'sub': a', 'b', 'd', 'e', 'f', 'c, 'Ln1Ln2Ln3Ln4Ln5O\u2003\u2003 (III)'} Ln1, Ln2, Ln3, Ln4 and Ln5 are independently different lanthanide elements;', 'O is oxygen; and', 'a and c are each independently numbers greater than 0; and', 'b, d, e, and f are independently 0 or a number greater than 0., 'wherein30. The catalyst of claim 28 , wherein the dopant combination consists essentially of Sr/Ce claim 28 , Sr/Tb claim 28 , Sr/B or Sr/Hf/K.31. The catalyst of claim 28 , wherein the dopant ...

Подробнее
Номер записи: 46
24-01-2019 дата публикации

OZONE-ACTIVATED NANOPOROUS GOLD AND METHODS OF ITS USE

Номер: US20190022627A1
Автор: Biener Juergen, BIENER Monika Margarete, Friend Cynthia M., Madix Robert J., PERSONICK Michelle L., Wang Lucun, Zugic Branko
Принадлежит:

The invention relates to nanoporous gold nanoparticle catalysts formed by exposure of nanoporous gold to ozone at elevated temperatures, as well as methods for production of esters and other compounds. 1. A method of synthesizing an activated nanoporous gold catalyst , the method comprising the steps of:a. providing nanoporous gold comprising 0.1 to 10% silver by atom; andb. contacting the nanoporous gold with ozone at a temperature of 100° C. or greater for a time sufficient to form the activated nanoporous gold catalyst.2. The method of claim 1 , wherein the nanoporous gold is formed by diminishing the quantity of silver present within an alloy comprising gold and silver.3. The method of claim 2 , wherein the alloy comprises from 70 to 85% silver by atom.4. The method of or claim 2 , wherein the diminishing comprises mixing the alloy with a solution comprising nitric acid.5. The method of any one of - claim 2 , wherein the nanoporous gold catalyst comprises from 1 to 3% silver by atom.6. The method of any one of - claim 2 , wherein the ozone is present within a mixture comprising one or more gases at a concentration of from 10 to 50 g/Nm.7. The method of claim 6 , wherein the one or more gases are selected from the group consisting of Oand He.8. The method of any one of - claim 6 , wherein the contacting comprises flowing the ozone at a rate of from 30 to 70 mL/min.9. The method of any one of - claim 6 , wherein the nanoporous gold catalyst is a foil.10. The method of claim 9 , wherein the foil has a pore depth of from 25 to 75 nm.11. The method of any one of - claim 9 , wherein the foil is characterized by a ligament width of from 15 to 45 nm.12. The method of any one of - claim 9 , wherein the nanoporous gold catalyst is an ingot.13. The method of claim 12 , wherein the ingot is characterized by a ligament width of from 25 to 75 nm.14. The method of any one of - claim 12 , wherein the ingot has a surface area of from 2 to 6 m/g.15. The method of any one of - ...

Подробнее
Номер записи: 47
24-01-2019 дата публикации

Catalyst and method for fractionating lignocellulosic material

Номер: US20190022632A1
Автор: Joynal Abedin, Malek Alkasrawi
Принадлежит: Individual

Various embodiments disclosed relate to solid catalysts that convert lignocellulosic material to monomer sugars that are suitable for fermentation. The solid catalysts include a transition metal complex attached to a magnetic bead, and can be physically separated from a fermentation mixture and reused several times.

Подробнее
Номер записи: 48
23-01-2020 дата публикации

NANO-SIZED ZEOLITE CATALYST HAVING A HIGH SILICA TO ALUMINA RATIO

Номер: US20200023342A1
Автор: BARTON Katherine, FICKEL Dustin
Принадлежит: SABIC Global Technologies, B.V.

A catalyst includes a zeolite, wherein the zeolite has: a CHA framework; a particle size less than or equal to 100 nanometers; and a silica to alumina mole ratio in the range of about 50:1 to about 150:1. The catalyst can include a metal dopant. The catalyst can be used for purifying a product by flowing a reactant across the catalyst to form the product; and condensing or separating the product. The product can be an olefin or alkenes with an increased carbon chain. The catalyst can be used for selective catalytic reduction of nitrogen oxide or a gas to liquid reaction. A method of producing the catalyst can include selecting the concentration of a crystal growth inhibitor based on the ratio of the silica precursor and an alumina precursor such that the zeolite crystals have a mean particle size less than or equal to 100 nanometers. 1. A catalyst comprising: a CHA framework;', 'a particle size less than or equal to 100 nanometers; and', 'a silica to alumina mole ratio in the range of about 50:1 to about 150:1., 'a zeolite, wherein the zeolite has2. The catalyst according to claim 1 , wherein the zeolite has a particle size less than or equal to 50 nanometers.3. The catalyst according to claim 1 , wherein zeolite further comprises a metal dopant.4. The catalyst according to claim 3 , wherein the dopant is selected from copper (Cu) claim 3 , nickel (Ni) claim 3 , iron (Fe) claim 3 , zinc (Zn) claim 3 , manganese (Mn) claim 3 , and molybdenum (Mo).5. A method of producing a catalyst comprising:combining a silica precursor and an alumina precursor, wherein the ratio of the silica precursor to the alumina precursor is in the range of about 50:1 to about 150:1;adding a crystal growth inhibitor;adding a structure directing agent; andcrystallizing the zeolite, wherein the zeolite crystals have a CHA framework and a mean particle size less than or equal to 100 nanometers.6. The method according to claim 5 , wherein the crystal growth inhibitor is polyethyleneimine.7. The ...

Подробнее
Номер записи: 49
28-01-2021 дата публикации

MULTICOMPONENT PLASMONIC PHOTOCATALYSTS CONSISTING OF A PLASMONIC ANTENNA AND A REACTIVE CATALYTIC SURFACE: THE ANTENNA-REACTOR EFFECT

Номер: US20210023541A1
Автор: Halas Nancy Jean, Nordlander Peter, Robatjazi Hossein, Swearer Dayne Francis, Zhang Chao, Zhao Hangqi, Zhou Linan
Принадлежит: William Marsh Rice University

A multicomponent photocatalyst includes a reactive component optically, electronically, or thermally coupled to a plasmonic material. A method of performing a catalytic reaction includes loading a multicomponent photocatalyst including a reactive component optically, electronically, or thermally coupled to a plasmonic material into a reaction chamber; introducing molecular reactants into the reaction chamber; and illuminating the reaction chamber with a light source. 1. (canceled)2. (canceled)3. (canceled)4. (canceled)5. (canceled)6. (canceled)7. (canceled)8. (canceled)9. (canceled)10. (canceled)11. (canceled)12. (canceled)13. (canceled)14. (canceled)15. (canceled)16. (canceled)17. (canceled)18. (canceled)19. (canceled)20. (canceled)21. (canceled)22. A multicomponent photocatalyst comprising:a reactive component optically, electronically, or thermally coupled to a plasmonic material, wherein the reactive component is alloyed at the surface of the plasmonic material.23. The multicomponent photocatalyst of claim 22 , wherein the plasmonic material is selected from gold (Au) claim 22 , silver (Ag) claim 22 , copper (Cu) claim 22 , aluminum (Al) claim 22 , alloys thereof claim 22 , TiN claim 22 , or doped semiconductors.24. The multicomponent photocatalyst of claim 22 , wherein the plasmonic material is a 2-dimensional material.25. The multicomponent photocatalyst of claim 22 , wherein a molar ratio of the plasmonic material to the reactive component may be between 1000:1 to 10:1.26. The multicomponent photocatalyst of claim 22 , wherein the plasmonic material has a plasmon resonance at a wavelength between 180 nm and 10 microns.27. The multicomponent photocatalyst of claim 22 , wherein the plasmonic material has a plasmon resonance at a wavelength between about 380 nm-760 nm of the electromagnetic spectrum.28. The multicomponent photocatalyst of claim 22 , wherein the plasmonic material has at least one dimension with a size between about 1 nm and 300 nm.29. The ...

Подробнее
Номер записи: 50
28-01-2021 дата публикации

CATALYST ARTICLE AND THE USE THEREOF FOR FILTERING FINE PARTICLES

Номер: US20210023543A1
Автор: CLOWES Lucy, GOODWIN John, LAKADAMYALI Fezile, RAVENSCROFT Alex, ROBSON Chris, WARREN Sarah
Принадлежит:

A catalyst article and its use in an exhaust system for internal combustion engines is disclosed. The catalyst article comprises a substrate which is a wall-flow filter, a first catalyst composition, and a second catalyst composition. The first and second catalyst compositions each independently comprise an oxygen storage component (OSC) derived from a CeZr mixed oxide sol having a D90 of less than 1.3 micron and a particulate inorganic oxide having a D90 of from 1 to 20 microns. 1. A catalyst article for treating an exhaust gas from a positive-ignition internal-combustion engine , the article comprising:a substrate which is a wall-flow filter having an inlet end and an outlet end and an axial length L therebetween, a plurality of inlet channels extending from the inlet end and a plurality of outlet channels extending from the outlet end,wherein the plurality of inlet channels comprise a first catalyst composition extending from the inlet or outlet end for at least 50% of L and the plurality of outlet channels comprise a second catalyst composition extending from the outlet or inlet end for at least 50% of L, wherein the first and second catalyst compositions overlap by at most 80% of L,wherein the first and second catalyst compositions each independently comprise an oxygen storage component (OSC) derived from a CeZr mixed oxide sol having a D90 of less than 1.3 micron and a particulate inorganic oxide having a D90 of from 1 to 20 microns.2. The catalyst article of claim 1 , wherein the CeZr mixed oxide sol has a D90 of less than 1.0 micron.3. The catalyst article of claim 1 , wherein the CeZr mixed oxide sol has a Z-average particle size of between 230 and 310 nm.4. The catalyst article of claim 1 , wherein the first and second catalyst compositions overlap by at most 20% of L.5. The catalyst article of claim 1 , wherein the first and second catalyst compositions overlap by at most 10% of L.6. The catalyst article of claim 1 , wherein the CeZr mixed oxide sol has a ...

Подробнее
Номер записи: 51
23-01-2020 дата публикации

CATALYTIC FORMS AND FORMULATIONS

Номер: US20200024214A1
Автор: Cizeron Joel M., Freer Erik, Gamoras Joel, McCormick Jarod, Nyce Greg, Ras Erik-Jan, Rosenberg Daniel, Schammel Wayne P., Scher Erik C., Vincent Joel David, Vogel Roger, Zurcher Fabio R.
Принадлежит:

Catalytic forms and formulations are provided. The catalytic forms and formulations are useful in a variety of catalytic reactions, for example, the oxidative coupling of methane. Related methods for use and manufacture of the same are also disclosed. 152-. (canceled)53. A catalytic material comprising a first and second catalyst , wherein the first and second catalysts have a different catalytic activity in the oxidative coupling of methane (OCM) reaction under the same conditions , wherein the catalytic material comprises a C2 selectivity of greater than 50% and a methane conversion of greater than 20% when the catalyst is employed as a heterogeneous catalyst in the oxidative coupling of methane at a temperature of 750° C. or less.54. The catalytic material of claim 53 , wherein the first catalyst is a nanowire catalyst.55. The catalytic material of claim 53 , wherein the second catalyst is a bulk catalyst.56. The catalytic material of claim 53 , wherein each of the first and second catalysts are nanowire catalysts.57. The catalytic material of claim 53 , wherein each of the first and second catalyst are bulk catalysts.58. The catalytic material of claim 53 , wherein the second catalyst has a lower catalytic activity than the first catalyst under the same conditions.59. The catalytic material of claim 58 , wherein the catalytic activity of the second catalyst increases with increasing temperature.6070-. (canceled)71. The catalytic material of claim 53 , wherein the catalytic material comprises a void fraction volume of about 35% to about 70%.72. The catalytic material of claim 71 , wherein the catalytic material comprises a void fraction volume of about 45% to about 65%.73. The catalytic material of claim 53 , wherein the catalytic material comprises catalyst particles having a cross sectional dimension in at least one dimension between about 1 mm and about 20 mm.74. The catalytic material of claim 73 , wherein the cross sectional dimension is between about 2 mm ...

Подробнее
Номер записи: 52
23-01-2020 дата публикации

NANOPARTICLES AND PREPARATION METHOD

Номер: US20200024295A1
Автор: MURESAN Nicoleta, Thompsett David
Принадлежит:

The present invention concerns a composite comprising supported nanoclusters, the nanoclusters comprising one or more metal ion-containing compounds, wherein each metal ion-containing compound is a transition metal complex having ligands coordinated to a transition metal ion, the ligands being selected from the group consisting of glyoxime; a glyoxime derivative; salicylaldimine; and a salicylaldimine derivative; and wherein the nanoclusters are spaced across one or more surfaces of a support; a material prepared from the composite by annealing; and solution-based methods for forming the composite and materials. Uses of the metal ion-containing compounds are also described, as are uses of the products as catalysts and adsorbers. 1. A composite comprising supported nanoclusters , the nanoclusters comprising one or more metal ion-containing compounds , wherein each metal ion-containing compound is a transition metal complex having ligands coordinated to a transition metal ion , the ligands being selected from the group consisting of glyoxime; a glyoxime derivative; salicylaldimine; and a salicylaldimine derivative; and wherein the nanoclusters are spaced across one or more surfaces of a support.2. The composite according to claim 1 , wherein the ligands are glyoxime or a derivative thereof claim 1 , preferably having the formula (HO)N═C(R1)-C(R2)=N(OH) claim 1 , wherein R1 and R2 are each independently H claim 1 , hydroxy claim 1 , alkoxy claim 1 , carboxy or optionally substituted alkyl claim 1 , aryl or heteroaryl group claim 1 , or R1 and R2 join together to form a cyclic alkyl.3. The composite according to claim 1 , wherein the support comprises at least one of aluminium oxide claim 1 , cerium oxide claim 1 , zirconium oxide claim 1 , silicon oxide claim 1 , titanium oxide claim 1 , and a zeolite.4. The composite according to claim 1 , wherein the wherein the one or more metal ion-containing compounds of the nanoclusters comprise one or more transition metal ions ...

Подробнее
Номер записи: 53
02-02-2017 дата публикации

Processes for the manufacturing of oxidation catalysts

Номер: US20170028386A1
Автор: ARCHER Raymond, DIAS ERIC L., Murphy Vincent J., Salem George Frederick, Shoemaker James, Zhu Guang
Принадлежит: RENNOVIA INC.

Disclosed are catalysts comprised of platinum and gold. The catalysts are generally useful for the selective oxidation of compositions comprised of a primary alcohol group and at least one secondary alcohol group wherein at least the primary alcohol group is converted to a carboxyl group. More particularly, the catalysts are supported catalysts including particles comprising gold and particles comprising platinum, wherein the molar ratio of platinum to gold is in the range of about 100:1 to about 1:4, the platinum is essentially present as Pt(0) and the platinum-containing particles are of a size in the range of about 2 to about 50 nm. Also disclosed are methods for the oxidative chemocatalytic conversion of carbohydrates to carboxylic acids or derivatives thereof. Additionally, methods are disclosed for the selective oxidation of glucose to glucaric acid or derivatives thereof using catalysts comprising platinum and gold. Further, methods are disclosed for the production of such catalysts. 126-. (canceled)27. A process for manufacturing an oxidation catalyst comprising the steps of:a) mixing a support with an aqueous solution comprising at least one gold-containing compound to form a slurry,b) adding a base to the slurry to form an insoluble gold complex which deposits on the surface of the support thereby forming a gold-containing support,c) heating the gold-containing support,d) mixing the gold-containing support from step c) with an aqueous solution or a colloid comprising at least one platinum-containing compound to impregnate the gold-containing support with the platinum-containing compound,e) drying the resulting impregnated support from step d) at a temperature up to about 120° C., andf) reducing platinum on the dried impregnated support from step e) at a temperature in the range of from about 200° C. to about 600° C. to produce the oxidation catalyst, wherein the oxidation catalyst comprises particles comprising gold and particles comprising platinum on the ...

Подробнее
Номер записи: 54
02-02-2017 дата публикации

METHOD AND SYSTEM FOR FORMING PLUG AND PLAY METAL CATALYSTS

Номер: US20170028393A1
Автор: Biberger Maximilian A., Kevwitch Robert Matthew, Kingsley Jesudos J., LEHMAN Stephen Edward, Yin Qinghua
Принадлежит:

A metal catalyst is formed by vaporizing a quantity of metal and a quantity of carrier forming a vapor cloud. The vapor cloud is quenched forming precipitate nanoparticles comprising a portion of metal and a portion of carrier. The nanoparticles are impregnated onto supports. The supports are able to be used in existing heterogeneous catalysis systems. A system for forming metal catalysts comprises means for vaporizing a quantity of metals and a quantity of carrier, quenching the resulting vapor cloud and forming precipitate nanoparticles comprising a portion of metals and a portion of carrier. The system further comprises means for impregnating supports with the nanoparticles. 1: A method of making a metal catalyst comprising:a. providing a quantity of nanoparticles, wherein at least some of the nanoparticles comprise a first portion comprising catalyst material bonded to a second portion comprising a carrier;b. providing a quantity of supports; andc. combining the supports with the nanoparticles.2: The method of wherein the supports comprise pores and voids.3: The method of wherein the catalyst material comprises any among a list of at least one metal claim 1 , at least one metal alloy claim 1 , and any combination thereof.4: The method of wherein providing a quantity of nanoparticles comprises:a. loading a quantity of catalyst material and a quantity of carrier into a plasma gun in a desired ratio;b. vaporizing the quantity of catalyst material and quantity of carrier thereby forming a vapor cloud; andc. quenching the vapor cloud, thereby forming a quantity of nanoparticles.5: The method of wherein the carrier comprises an oxide.6: The method of wherein the oxide comprises silica claim 5 , alumina claim 5 , yttria claim 5 , zirconia claim 5 , titania claim 5 , ceria claim 5 , baria claim 5 , and any combination thereof.7: The method of wherein combining the supports with the nanoparticles comprises:a. suspending the nanoparticles in a solution, thereby forming a ...

Подробнее
Номер записи: 55
04-02-2016 дата публикации

METHODS AND SYSTEMS FOR FORMING CATALYTIC ASSEMBLIES, AND RELATED CATALYTIC ASSEMBLIES

Номер: US20160030925A1
Автор: Noyes Dallas B.
Принадлежит: Seerstone LLC

A method of forming a catalytic assembly comprises forming a support structure comprising at least one surface comprising at least one catalyst material. At least one mounted nanocatalyst is formed on the at least one support structure, the at least one mounted nanocatalyst comprising a nanoparticle of the at least one catalyst material bound to a nanostructure. A catalytic assembly and system for producing a catalytic assembly are also described. 1. A method of forming a catalytic assembly comprising:forming a support structure comprising at least one surface comprising at least one catalyst material; andforming at least one mounted nanocatalyst on the at least one support structure, the at least one mounted nanocatalyst comprising a nanoparticle of the at least one catalyst material bound to a nanostructure.2. The method of claim 1 , wherein forming a support structure comprises forming nested structures each comprising at least one catalyst-containing surface comprising the at least one catalyst material.3. The method of claim 2 , wherein forming nested structures comprises forming greater than or equal to two structures in a nested relationship.4. The method of claim 2 , wherein forming nested structures comprises forming each of the nested structures to comprise a hollow and elongated structure.5. The method of claim 2 , wherein forming nested structures comprises forming each of the nested structures to be substantially concentrically aligned relative to each other of the nested structures.6. The method of claim 2 , wherein forming nested structures comprises forming at least one of the nested structures to exhibit at least one of a longitudinal axis offset from that of the support structure and a lateral axis offset from that of the support structure.7. The method of claim 2 , wherein forming nested structures comprises forming the support structure to comprise chambers substantially isolated from one another by the nested structures.8. The method of claim 2 ...

Подробнее
Номер записи: 56
01-02-2018 дата публикации

PROCESS FOR THE PREPARATION OF NANOPARTICLES OF NOBLE METALS IN HYDROGEL AND NANOPARTICLES THUS OBTAINED

Номер: US20180029000A1
Автор: Blosi Magda, Costa Anna Luisa
Принадлежит:

There is described a versatile and environment-friendly one-pot process for the preparation of nanoparticles of noble metals in hydrogel, obtainable at room temperature using quaternized hydroxyethylcellulose. 1. Hydrogel comprising water , at least one quaternary ammonium salt of hydroxyethylcellulose , and nanoparticles of at least one metal , wherein:said at least one metal is selected from Au, Ag, Cu, Pd, Pt, and mixtures thereof,said at least one quaternary ammonium salt of hydroxyethylcellulose is selected from polyquaternium-4, polyquatemium-10, polyquaternium-24 and polyquaternium-67,said nanoparticles of at least one metal of said nanoparticles have an average particle size distribution D50 of 10-100 nm, and are in a concentration of 0.3-5% m/m of the hydrogel.2. The hydrogel of claim 1 , wherein said at least one quaternary ammonium salt of hydroxyethylcellulose and said metal are in a molar ratio from 1:1 to 10:1.3. The hydrogel of claim 2 , wherein said at least one quaternary ammonium salt of hydroxyethylcellulose and said metal are in a molar ratio from 1.1:1 to 7:1.4. The hydrogel of claim 1 , wherein said at least one quaternary ammonium salt of hydroxyethylcellulose is polyquaternium-67.5. The hydrogel of claim 1 , wherein said metal is Ag or Au.6. Process for the preparation of hydrogel of nanoparticles of at least one metal of claim 1 , comprising the steps of:a) providing an aqueous solution of an inorganic salt of at least one metal,b) providing an aqueous solution of at least one quaternary ammonium salt of hydroxyethylcellulose,c) combining the solutions and mixing under stirring at room temperature, andd) reacting at room temperature for at least 5 hours, thus obtaining the hydrogel.7. The process of claim 6 , wherein in step c) pH is adjusted to basic pH.8. The process of claim 7 , wherein pH is adjusted by adding an inorganic base claim 7 , said base and said at least one metal being in a molar ratio from 1:1 to 5:1.9. Hydrogel obtainable ...

Подробнее
Номер записи: 57
01-02-2018 дата публикации

A PHOTOCATALYTIC CONCRETE PRODUCT AND A METHOD TO PRODUCE A PHOTOCATALYTIC CONCRETE PRODUCT

Номер: US20180029011A1
Автор: Jensen Henrik, ÖSTERGAARD Simon Lausten, Reenberg Theis
Принадлежит:

The present invention relates to a photocatalytic concrete product and a method to produce a photocatalytic concrete product. In first aspect the invention relates to method of producing photocatalytic concrete product, said concrete product being photocatalytic by containing nano sized photocatalytic particles embedded in an section including a first surface, said first surface forming an exterior surface when the photocatalytic concrete product is used as cover/lining. The method comprises: providing a not-yet-set concrete product having a first surface, applying a dispersion containing nano sized photocatalytic particles, such as titanium dioxide nanoparticles a solvent including a humectant onto said first surface of the not-yet-set concrete product. 141-. (canceled)42132. A method of producing photocatalytic concrete product () , said concrete product being photocatalytic by containing nano sized photocatalytic particles embedded in a section () including a first surface () , the method comprises:{'b': 1', '2, 'providing a not-yet-set concrete product () having a first surface ()'} nano sized photocatalytic particles, such as titanium dioxide nanoparticles', 'a solvent including a humectant selected from the group of glycol, such as glycerol, 1,2-butanediol, 1,4-butanediol, propylene glycol, dipropylene glycol, ethylene glycol, diethylene glycol, triethylene glycol, hexasol, 1,5-pentanediol, 3-methyl-1,5-pentanediol, isoprene glycol and/or selected from the group of polyethers, such as polyethyleneglycols, polypropyleneglycols, polyethyleneglycol methyl ethers, polypropyleneglycol methyl ethers and/or selected from the group of amines, such as ethanolamine, propanolamines, triethanolamine, polyether amines such as polyoxyethyleneamines, polyoxypropyleneamines, polyoxyethylene monoamines, polyoxypropylene monoamines, 'applying a dispersion containing'}{'b': '2', 'onto said first surface () of the not-yet-set concrete product.'}43. A method according to claim 42 ...

Подробнее
Номер записи: 58
01-02-2018 дата публикации

MICRON-SCALE CERIUM OXIDE PARTICLE HAVING MULTI-CORE SINGLE-SHELL STRUCTURE AND PREPARATION METHOD THEREFOR

Номер: US20180029012A1
Автор: SHEN Meiqing, WANG Jianqiang, Wang Jun, WEI Guangxi
Принадлежит:

The present invention involves micron-scale cerium oxide particles having a multi-cores single-shell structure, comprising: a cerium oxide shell, the shell being composed of crystalline and/or amorphous nano-scale cerium oxide particles; and a plurality of nano-scale cerium oxide grain cores aggregates located in the interior of the shell. Also involved is a preparation method for the micron-scale cerium oxide particle having a multi-cores single-shell structure. A supported catalyst with the micron-scale cerium oxide particles according to the invention as the support have good hydrothermal stability and good sulfur resistance, and the active components of the supported catalyst are not easily embedded, and the supported catalyst has a great application prospect in the field of catalytic oxidation of exhaust emissions such as CO, NO or volatile organic compounds. 1. A micro-scale cerium oxide particle having multi-cores single-shell structure , characterized in that the micro-scale cerium oxide particle comprises: a cerium oxide shell , the shell being composed of crystalline and/or amorphous nano-scale cerium oxide particles; and a plurality of nano-scale cerium oxide grain cores aggregates located in the interior of the shell.2. The micro-scale cerium oxide particle having multi-cores single-shell structure according to claim 1 , characterized in that the micro-scale cerium oxide particles are spherical or sphere-like particles claim 1 , having an average particle size of 0.5 μm to 50 μm claim 1 , and a BET specific surface area of 50 to 200 m/g; the mass of the plurality of nano-scale cerium oxide grain cores aggregates in the interior of the shell is from 85 to 99% based on the total mass of the micro-scale cerium oxide particles claim 1 , and the mass of the cerium oxide shell is from 1 to 15% based on the total mass of the micro-scale cerium oxide particles; the cerium oxide shell has a thickness ranging from 10 to 200 nm; the nano-scale cerium oxide grains ...

Подробнее
Номер записи: 59
01-02-2018 дата публикации

MULTIFUNCTIONAL CERIUM-BASED NANOMATERIALS AND METHODS FOR PRODUCING THE SAME

Номер: US20180029013A1
Автор: "OKEEFE Matthew J.", CASTANO LONDONO Carlos E., FAHRENHOLTZ William G.
Принадлежит:

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

Подробнее
Номер записи: 60
02-02-2017 дата публикации

Method of Dispersing Anatase Titanium Dioxide for Penetration in Concrete Structures to Reduce Pollutants

Номер: US20170029342A1
Автор: Durante Colin, Higgins Craig
Принадлежит:

Methods for embedding photocatalytic titanium dioxide in concrete surfaces to reduce pollutants via photocatalytic reactions are provided herein. One method includes mixing a solvent compound with an anatase titanium dioxide (TiO) photocatalyst, applying an amount of concrete treatment compound to an upper surface of the concrete, the concrete treatment compound comprising a mixture of a liquid carrier compound with the anatase titanium dioxide (TiO) photocatalyst. 1. A method for treating a concrete structure , the method comprising:{'sub': 2', '2, 'mixing a solvent compound with an anatase titanium dioxide (TiO) photocatalyst such that the anatase titanium dioxide (TiO) photocatalyst is dispersed; and'}{'sub': '2', 'applying an amount of concrete treatment compound to an upper surface of the concrete, the concrete treatment compound comprising a mixture of a liquid carrier compound with the anatase titanium dioxide (TiO) photocatalyst.'}2. The method according to claim 1 , wherein the compound includes at least one of tetrachloroethylene claim 1 , toluene claim 1 , turpentine claim 1 , acetone claim 1 , methyl acetate claim 1 , ethyl acetate claim 1 , hexane claim 1 , citrus terpenes claim 1 , ethanol claim 1 , methyl ethyl ketone claim 1 , mineral spirits claim 1 , and ethyl alcohol.3. The method according to claim 1 , wherein the liquid carrier compound penetrates the concrete to a depth from approximately a sixteenth of an inch to approximately a quarter of an inch claim 1 , as measured from an upper surface of the concrete claim 1 , so as to embed the titanium dioxide (TiO) photocatalyst therein.4. The method according to claim 3 , wherein the liquid carrier compound is configured to simultaneously seal and harden the concrete claim 3 , and fills voids in the concrete so as to increase resistance of the concrete to deleterious effects.5. The method according to claim 4 , wherein the deleterious effects include at least one of water damage claim 4 , chloride ...

Подробнее
Номер записи: 61
02-02-2017 дата публикации

HYDROCARBON SYNTHESIS METHODS, APPARATUS, AND SYSTEMS

Номер: US20170029711A1
Автор: Greuel Peter G., McNeff Clayton V., McNeff Larry C., Nowlan Daniel Thomas, Yan Bingwen
Принадлежит:

Embodiments of the invention include apparatus and systems for hydrocarbon synthesis and methods regarding the same. In an embodiment, the invention includes a method for creating a hydrocarbon product stream comprising reacting a reaction mixture in the presence of a catalyst inside of a reaction vessel to form a product mixture, the reaction mixture comprising a carbon source and water. The temperature inside the reaction vessel can be between 450 degrees Celsius and 600 degrees Celsius and the pressure inside the reaction vessel can be above supercritical pressure for water. In an embodiment, the invention includes an extrusion reactor system for creating a hydrocarbon product stream. The temperature inside the extrusion reactor housing between 450 degrees Celsius and 600 degrees Celsius. Pressure inside the reaction vessel can be above supercritical pressure for water. Other embodiments are also included herein. 1. A method for creating a hydrocarbon product stream comprising:reacting components of a reaction mixture in the presence of a catalyst to form a product mixture, the reaction mixture comprising a carbon source and water, wherein the reaction takes place inside a reaction vessel;wherein the temperature inside the reaction vessel is between 450 degrees Celsius and 600 degrees Celsius and the pressure inside the reaction vessel is above supercritical pressure for water;wherein the catalyst comprises a metal oxide.2. The method of claim 1 , wherein the reaction mixture includes at least about 50% water by mass.3. The method of claim 1 , wherein the carbon source includes one or more selected from the group consisting of carboxylic acids claim 1 , fatty acids claim 1 , triglycerides claim 1 , and carbohydrates.4. The method of claim 1 , wherein the reaction vessel is part of an extrusion system.5. The method of claim 1 , wherein the catalyst comprises a metal oxide that is stable at temperatures above 450 degrees Celsius in the presence of supercritical ...

Подробнее
Номер записи: 62
01-02-2018 дата публикации

AEROGELS

Номер: US20180029893A1
Автор: Han Xiao, Siller Lidija
Принадлежит: University of Newcastle Upon Tyne

This invention relates to methods of producing aerogels and composites thereof. In particular, the invention relates to methods of producing silica aerogels and composites thereof. The invention also relates to doped aerogels and doped silica aerogels. The method involves the use of alkaline solutions, and particularly aqueous alkaline solutions, during the aerogel drying process. The method is more energy efficient and cheaper than prior art methods. 1. A method for the production of an oxide aerogel optionally comprising a dopant , the method comprising:reacting an oxide wet gel with an electrophile to generate a gas, thereby providing a porous solid oxide containing the gas, the porous solid oxide optionally comprising a dopant;wherein the liquid component of the oxide wet gel comprises an alkaline solution.2. A method of claim 1 , wherein the oxide is silica.3. A method of wherein the oxide is Dawsonite.4. A method of claim 3 , wherein the method comprises converting the Dawsonite aerogel to an alumina aerogel.5. A method of claim 1 , wherein the electrophile is a reagent which reacts with the oxide wet gel to generate an acid.6. A method of claim 5 , wherein the electrophile is a silylating agent having the formula RSiX claim 5 , wherein R is independently at each occurrence selected from a C-Calkyl group and halide; and X is independently selected from halide and sulfate groups.7. A method of claim 6 , wherein the electrophile is trimethylchlorosilane (TMCS).8. A method of claim 7 , wherein the volume ratio of the TMCS to the oxide wet-gel is in the range of from 0.01 to 3.9. A method of claim 1 , wherein the alkaline solution is an aqueous solution.10. A method of claim 1 , wherein the alkaline solution comprises carbonate ions claim 1 , bicarbonate ions or a mixture thereof.11. A method of claim 10 , wherein the alkaline solution is an aqueous sodium bicarbonate solution.12. A method of claim 10 , wherein the alkaline solution has a concentration in the ...

Подробнее
Номер записи: 63
02-02-2017 дата публикации

PHOTOCATALYTIC THERMAL BARRIER COATING

Номер: US20170030510A1
Автор: Dunlap Thomas
Принадлежит:

A thermally insulated photocatalytic coating is provided. The photocatalytic coating includes a photocatalyst material capable of being activated by irradiation with a light source. Further, the photocatalytic coating includes a thermal barrier compound adapted to reduce temperature of the photocatalytic material for increasing efficiency of the photocatalytic layer. The present invention also relates to various articles, such as CFL lamps and bulbs, which have the coating applied thereon. These articles are very helpful in eliminating various impurities from ambient air. 1. A thermally insulated photocatalytic coating comprising:at least one photocatalyst material capable of being activated by an irradiation from a light source; andat least one thermal barrier compound comprising a reflection coefficient of about 0.25 and up to about 0.75, and thereby adapted to reduce temperature of the photocatalytic material.2. The thermally insulated photocatalytic coating of claim 1 , wherein the photocatalyst material comprises photocatalytic nanoparticles.3. The thermally insulated photocatalytic coating of claim 1 , wherein the photocatalyst material is selected from a group comprising titanium dioxide claim 1 , tungsten oxide claim 1 , strontium titanate claim 1 , and zinc oxide.4. The thermally insulated photocatalytic coating of claim 1 , wherein thermal barrier compound comprises thermal barrier nanoparticles.5. The thermal insulated photocatalytic coating of claims 1 , wherein the thermal barrier compound is selected from a group comprising indium tin oxide (ITO) claims 1 , antimony tin oxide (ATO) or ceramic particles.6. The thermal insulated photocatalytic coating of claim 1 , wherein the light source is at least one of a fluorescent bulb claim 1 , a fluorescent bulb claim 1 , incandescent light claim 1 , and Light Emitting Diode (LED).7. An article comprising a base substrate coated with the thermally insulated photocatalytic coating of .8. The article of claim 7 , ...

Подробнее
Номер записи: 64
30-01-2020 дата публикации

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

Номер: US20200030774A1
Автор: Gao Pu-Xian, Hoang Son
Принадлежит:

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

Подробнее
Номер записи: 65
31-01-2019 дата публикации

Catalyst and method for synthesis of aromatic hydrocarbons through direct conversion of synthesis gas

Номер: US20190031575A1
Автор: FENG Jiao, Junhao Yang, Xinhe Bao, Xiulian Pan, Yifeng Zhu
Принадлежит: Dalian Institute of Chemical Physics of CAS

Synthesis of aromatic hydrocarbons from synthesis gas in a fixed bed or a moving bed reactor loaded with a composite catalyst comprising Catalyst Component A and Catalyst Component B mixed via a mechanical mixing mode, wherein the active ingredient of the Catalyst Component A is active metal oxides; and the Catalyst Component B is one or both of ZSM-5 zeolite and metal modified ZSM-5; the pressure of the synthesis gas is 0.1-6 MPa; the reaction temperature is 300-600° C.; and the space velocity is 500-8000 h−1. The reaction process has a high product yield and selectivity, with the selectivity of aromatics reaching 50-85%, while the selectivity of the methane byproduct is less than 15%.

Подробнее
Номер записи: 66
31-01-2019 дата публикации

PHOSPHINE SUBSTITUTED FERROCENYL COMPLEX

Номер: US20190031697A1
Автор: AZIZ Md. Abdul, HELAL Aasif, SHAIKH M. Nasiruzzaman
Принадлежит: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

A functionalized magnetic nanoparticle including an organometallic sandwich compound and a magnetic metal oxide. The functionalized magnetic nanoparticle may be reacted with a metal precursor to fol in a catalyst for various C—C bond forming reactions. The catalyst may be recovered with ease by attracting the catalyst with a magnet. 2. (canceled)3. The complex of claim 1 , wherein Ris an optionally substituted alkyl.4. The complex of claim 1 , wherein Ris an optionally substituted aryl.5. The complex of claim 1 , wherein X is NH.620-. (canceled) This application claims the priority of the filing date of the U.S. Provisional Patent Application No. 62/406,449 filed Oct. 11, 2016, the disclosure of which is hereby incorporated herein by reference in its entirety.This project was funded by the National Plan for Science, Technology and Innovation (MAARIFAH)-King Abdulaziz City for Science and Technology through the Science and Technology Unit at King Fahd University of Petroleum and Minerals (KFUPM), the Kingdom of Saudi Arabia, award number 15-NAN4650-04.Aspects of this technology are described in an article “Magnetic nanoparticle-supported ferrocenylphosphine: a reusable catalyst for hydroformylation of alkene and Mizoroki-Heck olefination” by M. Nasiruzzaman Shaikh, Md. Abdul Aziz, Aasif Helal, Mohamed Bououdina, Zain H. Yamania, and Tae-Jeong Kim, in RSC Advances, 2016, pages 41687-41695, which is incorporated herein by reference in its entirety.The present disclosure relates to a functionalized magnetic nanoparticle including an organometallic sandwich compound and a functional group which can bind to a nanoparticle. The disclosure also relates to a magnetic catalyst which catalyzes C—C bond forming reactions such as hydroformylation and the Mizoroki-Heck coupling reaction.Carbon-carbon bond formation reactions mediated by various transition metals have emerged as increasingly important methodologies for the preparation of numerous organic building blocks for drugs, ...

Подробнее
Номер записи: 67
04-02-2021 дата публикации

Method and System for Purifying Water Using Photocatalysis

Номер: US20210032136A1
Автор: Cates Ezra L., Qanbarzadeh Mojtaba, Wang Dawei
Принадлежит:

Photocatalytic water treatment methods that can be particularly beneficial in degradation of PFAS and reactors and reactor systems that can be useful in carrying out the PFAS degradation protocols are described. Methods utilize bismuth phosphate-based semiconductors as catalysts in particulate or other effective high-surface area water-contacting form. The catalysts can be excited by UV light to induce reduction reactions that degrade or transform PFAS contaminants in the water. Reactor systems include multiple reactors in series and/or parallel. Each reactor includes mixers to encourage turbulent flow within the reactor, control of which is isolated from residence time control within the reactor. The reactors include a light source to deliver about 200 W/L or less of activating radiation emission to the internal volume of the reactor, providing a highly efficient photocatalytic reaction system. 1. A water treatment method comprising:contacting a volume of water with a catalyst, the catalyst comprising a bismuth phosphate;irradiating the volume of water in contact with the catalyst and an electron donor with a light that comprises ultraviolet radiation at a wavelength of from about 100 nm to about 400 nm; whereinupon the irradiation, one or more perfluoroalkyl substances in the water are reduced.2. The water treatment method of claim 1 , wherein the catalyst comprises BiPOand/or BiO(OH)(PO).3. The water treatment method of claim 1 , wherein the catalyst comprises a particulate suspended in the volume of water.4. The water treatment method of claim 3 , the particulate comprising micron-sized particles that include the catalyst.5. The water treatment method of claim 3 , the particulate comprising particles having a cross sectional dimension of about 100 nm or less claim 3 , the particles including the catalyst.6. The water treatment method of claim 1 , the method further comprising contacting the volume of water with a co-catalyst.7. The water treatment method of ...

Подробнее
Номер записи: 68
11-02-2016 дата публикации

NOx STORAGE REDUCTION CATALYST AND PRODUCTION METHOD THEREOF

Номер: US20160038918A1
Автор: AKASHI Kazutoshi, SHIRAKAWA Shogo
Принадлежит:

An NOx storage reduction catalyst includes a catalyst support, and a catalyst metal and an NOx storage material supported thereon, wherein the catalyst metal is composed of a platinum-gold solid solution, and has a gold content of greater than 1 mol % but 20 mol % or less relative to the total molar number of platinum and gold contained in the catalyst metal. A method for producing an NOx storage reduction catalyst includes adding sodium borohydride to a mixed solution containing platinum ions and gold ions, thereby reducing the platinum ions and the gold ions to produce a catalyst metal composed of a platinum-gold solid solution; purifying the catalyst metal; and supporting the catalyst metal and an NOx storage material on a catalyst support. 1. An NOx storage reduction catalyst comprising a catalyst support , and a catalyst metal and an NOx storage material supported thereon , wherein said catalyst metal is composed of a platinum-gold solid solution , and has a gold content of greater than 1 mol % but 20 mol % or less relative to the total molar number of platinum and gold contained in said catalyst metal.2. The NOx storage reduction catalyst as claimed in claim 1 , wherein said catalyst metal has a gold content of 5 mol % or more but 10 mol % or less relative to the total molar number of platinum and gold contained in said catalyst metal.3. The NOx storage reduction catalyst as claimed in claim 1 , wherein said catalyst metal has an average primary particle diameter of greater than 0 nm but 10 nm or less.4. The NOx storage reduction catalyst as claimed in claim 3 , wherein said catalyst metal has an average primary particle diameter of greater than 0 nm but 5 nm or less.5. The NOx storage reduction catalyst as claimed in claim 1 , wherein when said catalyst metal is analyzed using a scanning transmission electron microscope equipped with an energy dispersive X-ray analyzer (STEM-EDX) under condition in which the spot size of an electron beam is 1 nm or less claim ...

Подробнее
Номер записи: 69
11-02-2016 дата публикации

METAL NANO-CATALYSTS IN GLYCEROL AND APPLICATIONS IN ORGANIC SYNTHESIS

Номер: US20160038926A1
Автор: CHAHDOURA Faouzi, FAVIER Isabelle, GOMEZ Montserrat, TEUMA Emmanuelle
Принадлежит:

A catalytic system which is a suspension in glycerol of metal nanoparticles in at least one transition metal. The suspension also includes at least one compound stabilizing the metal nanoparticles, soluble in glycerol. The suspensions are obtained directly in glycerol. These are stable systems that can catalyse a reaction from an organic substrate, with high yields and activity, and excellent selectivity. Additionally, the use of the catalytic system for performing organic transformations such as hydrogenation or coupling reactions (formation of C—C, C—N, C—O, C—S . . . bonds), and for synthesizing polyfunctionnal molecules, in a single reactor, by multi-step, sequential or cascade reactions. 119-. (canceled)20. A catalytic system , consisting of a suspension in glycerol of metal nanoparticles comprising at least one transition metal , said suspension also comprising at least one glycerol-soluble stabilizing compound which stabilizes said metal nanoparticles.21. The system as claimed in claim 20 , wherein said nanoparticles comprise a metal having a zero oxidation state chosen from the transition metals from Groups VI to XI.22. The system as claimed in claim 20 , wherein said nanoparticles comprise an oxide of a transition metal having a given oxidation state claim 20 , said metal being chosen from the metals of the first transition series.23. The system as claimed in claim 20 , wherein said nanoparticles comprise a metal chosen from copper claim 20 , palladium claim 20 , rhodium and ruthenium.24. The system as claimed in claim 20 , wherein said stabilizing compound is a ligand of said transition metal chosen from glycerol-soluble phosphines.25. The system as claimed in claim 24 , wherein said stabilizing compound is the sodium salt of tris(3-sulfophenyl)phosphine claim 24 , with a molar ratio of said ligand to said metal being of between 0.1 and 2.0.26. The system as claimed claim 20 , wherein said transition metal is at a concentration in the glycerol of between ...

Подробнее
Номер записи: 70
09-02-2017 дата публикации

HIGHLY ACTIVE THERMALLY STABLE NANOPOROUS GOLD CATALYST

Номер: US20170036194A1
Автор: Baeumer Marcus, Bagge-Hansen Michael, Biener Juergen, Biener Monika M., Neuman Bjoern, Wichmann Andre, Wittstock Arne
Принадлежит:

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

Подробнее
Номер записи: 71
09-02-2017 дата публикации

MESOPOROUS MATERIAL-COATED COBALT-BASED CATALYST FOR FISCHER-TROPSCH SYNTHESIS AND METHOD FOR PREPARING THE SAME

Номер: US20170036198A1
Автор: LIU Qianqian, RAO Shasha, SONG Dechen, ZHENG Shenke
Принадлежит:

A catalyst including cobalt, a carrier including silica, and a selective promoter including zirconium. The cobalt and the selective promoter are disposed on the surface of the carrier, and the outer surfaces of the active component cobalt and the selective promoter zirconium are coated with a shell layer including a mesoporous material. A method for preparing the catalyst, including: 1) soaking the carrier including silica into an aqueous solution including a zirconium salt, aging, drying, and calcining a resulting mixture to yield a zirconium-loaded carrier including silica; 2) soaking the zirconium-loaded carrier including silica into an aqueous solution including a cobalt salt, aging, drying, calcining a resulting mixture to yield a primary cobalt-based catalyst; 3) preparing a precursor solution of a mesoporous material; and 4) soaking the primary cobalt-based catalyst into the precursor solution of the mesoporous material; and crystalizing, washing, drying, and calcining a resulting mixture. 1. A catalyst , comprising:cobalt;a carrier comprising silica; anda selective promoter comprising zirconium;whereinthe cobalt and the selective promoter comprising zirconium are disposed on a surface of the carrier comprising silica; andouter surfaces of the active component cobalt and the selective promoter zirconium are coated with a shell layer comprising a mesoporous material.2. The catalyst of claim 1 , wherein the shell layer comprising the mesoporous material is coated with a hydrophobic organic layer.3. The catalyst of claim 1 , wherein the carrier comprising silica is an inorganic silica gel.4. The catalyst of claim 3 , wherein the inorganic silica gel has a specific area of between 150 and 350 m/g claim 3 , an average pore size of between 3 and 50 nm claim 3 , a pore volume of between 0.7 and 1.7 mL/g claim 3 , and a particle size of between 20 and 200 μm.5. The catalyst of claim 4 , wherein the specific area of the inorganic silica gel is between 200 and 300 m/g ...

Подробнее
Номер записи: 72
09-02-2017 дата публикации

PROCESS FOR PRODUCTION OF A SILICA-SUPPORTED ALKALI METAL CATALYST

Номер: US20170036984A1
Автор: Morris Trevor Huw, York Ian Andrew
Принадлежит:

A process for regenerating a silica-supported depleted alkali metal catalyst is described. The level of alkali metal on the depleted catalyst is at least 0.5 mol % and the silica support is a zero-gel. The process comprises the steps of contacting the silica supported depleted alkali metal catalyst with a solution of a salt of the alkali metal in a solvent system that has a polar organic solvent as the majority component. A re-impregnated catalyst prepared by the process of the invention any comprising a silica zero-gel support and a catalytic metal selected from an alkali metal in the range 0.5-5 mol % on the catalyst, wherein the surface area of the silica support is <180 m/g is also described. The invention is applicable to a process for preparing an ethylenically unsaturated acid or ester comprising contacting an alkanoic acid or ester of the formula R—CH—COOR, with formaldehyde or a suitable source of formaldehyde. 2. The process according to claim 1 , wherein the ethylenically unsaturated acid or ester is selected from methacrylic acid claim 1 , acrylic acid claim 1 , methyl methacrylate claim 1 , ethyl acrylate claim 1 , or butyl acrylate.3. The process according to claim 1 , wherein the ester or acid of formula R—CH—COORis methyl propionate or propionic acid.4. The process according to claim 1 , wherein the alcohol is methanol.5. The process according to claim 1 , wherein the process is conducted at a molar ratio of acid or ester to formaldehyde from 20:1 to 1:20 claim 1 , and at a temperature of 250-400° C. with a residence time of 1-100 seconds claim 1 , and at a pressure of 1-10 bara.6. The process according to claim 1 , wherein the re-impregnated catalyst is prepared by a process of contacting a silica supported depleted alkali metal catalyst with a solution of a salt of the alkali metal in a solvent system having a polar organic solvent as a majority component.7. A re-impregnated catalyst comprising:a silica zero-gel support anda catalytic metal ...

Подробнее
Номер записи: 73
09-02-2017 дата публикации

NANOPLATE-NANOTUBE COMPOSITES, METHODS FOR PRODUCTION THEREOF AND PRODUCTS OBTAINED THEREFROM

Номер: US20170037252A1
Автор: Bosnyak Clive P., Swogger Kurt W.
Принадлежит: Molecular Rebar Design, LLC

Compositions and methods of producing discrete nanotubes and nanoplates and a method for their production. The discrete nanotube/nanoplate compositions are useful in fabricated articles to provide superior mechanical and electrical performance. They are also useful as catalysts and catalyst supports for chemical reactions. 1. A composition comprising:inorganic plates with individual plate thickness of less than 10 nanometers wherein the plates are graphene nanoplates; anddiscrete multiwall carbon nanotubes having a diameter ranging from about 1 nanometer to 150 nanometers, an oxidation level of from about 1 weight % to about 15 weight %, and wherein the carbon nanotubes have an aspect ratio ranging from about 10 to 500.2. The composition of claim 1 , wherein the inorganic plates and discrete tubes are present at a weight ratio of about 1:100 to 100:1.3. The composition of claim 1 , wherein the inorganic plates are interspersed with the discrete multiwall carbon nanotubes.4. The composition of wherein the inorganic plates are oxidized.5. The composition of claim 1 , further comprising inorganic materials selected from the group consisting of: ceramics claim 1 , clays claim 1 , silicates claim 1 , metal complexes and salts.6. The composition of further comprising at least one electroactive material.7. The composition of further comprising at least one transition metal complex or active catalyst species.8. The composition of claim 1 , wherein the carbon nanotubes have an aspect ratio ranging from about 25 to 500.9. The composition of claim 7 , further comprising inorganic plates with individual plate thickness of less than 10 nanometers.10. The composition of claim 7 , wherein the inorganic plates are graphene nanoplates.11. The composition of claim 7 , wherein the inorganic plates and discrete tubes are present at a weight ratio of about 1:100 to 100:1.12. A method of preparing graphene carbon nanotube composites claim 7 , comprising the steps of:a) suspending non- ...

Подробнее
Номер записи: 74
08-02-2018 дата публикации

METHOD FOR CATALYTIC AMMONIA SYNTHESIS UNDER CONCENTRATED SOLAR ENERGY AND CATALYSTS

Номер: US20180037465A1
Автор: JIA Falong, MAO Chengliang, ZHANG Lizhi
Принадлежит:

A method for catalytic ammonia synthesis under concentrated solar energy and related catalysts. The method includes placing a catalyst in a reaction apparatus, feeding nitrogen and hydrogen into the reaction apparatus, and controlling a surface temperature of the catalyst to reach about 300° C. to 550° C. under irradiation of concentrated sunshine, to synthesize ammonia. The catalyst includes an amorphous and electron-rich black nano TiO(0 Подробнее

Номер записи: 75
11-02-2016 дата публикации

METHOD FOR DEPOSITING A PHOTOCATALYTIC COATING AND RELATED COATINGS, TEXTILE MATERIALS AND USE IN PHOTOCATALYSIS

Номер: US20160040353A1
Автор: CHAPUT Frederic, GREGORI Damia, GUILLARD Chantal, PAROLA Stephane
Принадлежит:

A method for depositing a photocatalytic coating on a support, the method having the steps: a) providing an aqueous and/or alcoholic suspension of nanoparticles of a semiconducting material, b) providing a sol in an aqueous and/or alcoholic solution of a hydrolyzed organosilane, c) mixing the suspension and the sol and proceeding with deposition of the obtained mixture on the support to be covered, d) performing a drying operation, e) and optionally producing an illumination of the obtained coating after drying at one wavelength at least causing activation of the semiconducting material, so as to remove at least 3% of the organic groups initially present in the coating and bound to the silicon atoms through a Si—C bond; as well as coatings with photocatalytic properties, materials, notably textiles, covered with such a coating and the use of such coatings and materials for photocatalysis. 141-. (canceled)42. A coating consisting of a polysiloxane , some silicon atoms of which are bound through a Si—C bond to at least one organic group , and wherein nanoparticles of a semiconducting material are distributed , wherein the coating is porous.43. The coating according to claim 42 , wherein the coating is macroporous.44. The coating according to claim 42 , wherein an illumination of the coating claim 42 , when the latter is immersed in an aqueous solution claim 42 , preferably in ultrapure water claim 42 , does not cause any removal of the organic groups bound through a Si—C bond to the silicon atoms claim 42 , present in the coating.45. The coating according to claim 44 , wherein the illumination not causing any removal of the organic groups bound through a Si—C bond to the silicon atoms claim 44 , present in the coating claim 44 , is achieved at 365 nm and at 312 nm with a respective light intensity of 10 mW/cmand 3 mW/cm claim 44 , for 6 hours at 22° C.46. The coating according to claim 42 , wherein 17 to 97% by moles claim 42 , and preferably from 80 to 95% by moles ...

Подробнее
Номер записи: 76
08-02-2018 дата публикации

Microwave absorbing carbon-metal oxides and modes of using, including water disinfection

Номер: US20180037474A1
Автор: Jaime Plazas-Tuttle, Navid B. Saleh
Принадлежит: University of Texas System

Microwave absorbing materials are provided herein. Disclosed microwave absorbing materials include those comprising metal oxide nanocrystals hybridized to a carbon nanomaterial. Methods for making and using microwave absorbing materials are also disclosed, such as for generation of reactive oxygen species and disinfection of water.

Подробнее
Номер записи: 77
09-02-2017 дата публикации

IRON-BASED CATALYST, METHOD FOR PREPARING THE SAME, AND METHOD FOR PRODUCING ALPHA-OLEFINS USING THE SAME

Номер: US20170037321A1
Автор: Chen Jiangang, CHEN Yilong, SONG Dechen, SUN Taomei, Zhang Juan, ZHANG Yanfeng
Принадлежит:

A catalyst including between 50.0 and 99.8 percent by weight of iron, between 0 and 5.0 percent by weight of a first additive, between 0 and 10 percent by weight of a second additive, and a carrier. The first additive is ruthenium, platinum, copper, cobalt, zinc, or a metal oxide thereof. The second additive is lanthanum oxide, cerium oxide, magnesium oxide, aluminum oxide, silicon dioxide, potassium oxide, manganese oxide, or zirconium oxide. 1. A catalyst , comprising , by a total weight of the catalyst:between 50.0 and 99.8 percent by weight of iron;between 0 and 5.0 percent by weight of a first additive, the first additive being ruthenium, platinum, copper, cobalt, zinc, or a metal oxide thereof;between 0 and 10 percent by weight of a second additive, the second additive being lanthanum oxide, cerium oxide, magnesium oxide, aluminum oxide, silicon dioxide, potassium oxide, manganese oxide, or zirconium oxide; anda carrier, the carrier being silicon dioxide.2. The catalyst of claim 1 , wherein a content of the first additive is between 0 and 2 wt. %; a content of the second additive is between 2 wt. % and 6 wt. %; and a content of the iron is between 60 wt. % and 97 wt. %.3. The catalyst of claim 1 , wherein a content of the carrier is between 1 wt. % and 40 wt. %; a content of the first additive is between 1 wt. % and 2 wt. %; a content of the second additive is between 2 wt. % and 6 wt. %; and the rest is the iron.4. A method for preparing the catalyst of claim 1 , the method comprising:1) mixing iron nitrate excluding crystal water, a nitrate of the first additive, and amorphous silicon dioxide with n-octanol to form a mixed solution, wherein a total weight percentage of the iron nitrate, the nitrate of the first additive, and the amorphous silicon dioxide in the mixed solution is between 3 wt. % and 20 wt. %; stirring the mixed solution so that the nitrate is dissolved and heating the mixed solution to a temperature of between 140 and 180° C.; keeping the ...

Подробнее
Номер записи: 78
09-02-2017 дата публикации

Synthesis of Au-induced Structurally Ordered AuPdCo Intermetallic Core-shell Nanoparticles and Their Use as Oxygen Reduction Catalysts

Номер: US20170037494A1
Автор: Adzic Radoslav R., Kuttiyiel Kurian A., Sasaki Kotaro
Принадлежит:

Embodiments of the disclosure relate to intermetallic nanoparticles. Embodiments include nanoparticles having an intermetallic core including a first metal and a second metal. The first metal may be palladium and the second metal may be at least one of cobalt, iron, nickel, or a combination thereof. The nanoparticles may further have a shell that includes palladium and gold. 1. A nanoparticle comprising intermetallic palladium and cobalt , wherein the palladium and cobalt are ordered into different distinct sites of the nanoparticle.2. The nanoparticle of claim 1 , wherein at least parts of the intermetallic palladium and cobalt comprises a trigonal symmetry.3. The nanoparticle of claim 1 , wherein at least parts of the intermetallic palladium and cobalt comprises a rhombohedral symmetry.4. The nanoparticle of claim 1 , wherein the nanoparticle has an average diameter of between about 2 nm and about 10 nm.5. (canceled)6. A nanoparticle claim 1 , comprising:an intermetallic core comprising a first metal and a second metal, wherein the first metal is palladium and the second metal is at least one of cobalt, iron, nickel, or combination thereof, and the first metal and the second metal are ordered into different distinct sites of the intermetallic core; anda shell comprising palladium and gold.7. The nanoparticle of claim 6 , wherein at least parts of the intermetallic core comprises a trigonal symmetry.8. The nanoparticle of claim 6 , wherein at least parts of the intermetallic core comprises a rhombohedral symmetry.9. The nanoparticle of claim 6 , the nanoparticle has an average diameter of between about 2 nm and about 10 nm.10. (canceled)11. The nanoparticle of claim 6 , wherein the second metal is cobalt.12. The nanoparticle of claim 6 , wherein the shell is conformal with the intermetallic core.13. A method of producing a nanoparticle claim 6 , comprising:providing seed nanoparticles suspended in a liquid, wherein the seed nanoparticles comprises at least one of ...

Подробнее
Номер записи: 79
07-02-2019 дата публикации

Composition containing an organosilane and a photocatalyst, and methods of treating flowering plants infected with a bacterial disease using the composition

Номер: US20190037849A1
Автор: Christopher C. Willette, Thomas D. Anspach
Принадлежит: Nano Photo Sciences LLC

The present invention relates to a composition for treating plants inflicted with a bacterial disease transmitted by a psyllid vector, and methods of treating plant disease transmitted by a psyllid vector. The composition comprises an organosilane, preferably an organosilane quaternary ammonium, and a photocatalyst, such as titanium dioxide.

Подробнее
Номер записи: 80
07-02-2019 дата публикации

CATALYST STRUCTURE AND METHOD FOR PRODUCING THE CATALYST STRUCTURE

Номер: US20190039056A1
Автор: Banba Yuichiro, Fukushima Masayuki, Kato Sadahiro, Sekine Kaori, Takahashi Hiroko
Принадлежит: FURUKAWA ELECTRIC CO., LTD.

A catalyst structure includes a carrier having a porous structure composed of a zeolite type compound and at least one catalytic material existing in the carrier. The carrier has channels communicating with each other, and the catalytic material is a metal fine particle and exists at least in the channel of the carrier. 1. A catalyst structure comprising:a carrier having a porous structure composed of a zeolite type compound; andat least one catalytic material existing in the carrier,the carrier having channels communicating with each other,the catalytic material being a metal fine particle and existing at least in the channel of the carrier.2. The catalyst structure according to claim 1 , wherein the metal fine particle is a fine particle composed of at least one metal selected from the group consisting of rhodium (Rh) claim 1 , ruthenium (Ru) claim 1 , iridium (Ir) claim 1 , palladium (Pd) claim 1 , platinum (Pt) claim 1 , iron (Fe) claim 1 , cobalt (Co) and nickel (Ni).3. The catalyst structure according to claim 1 , whereinthe channel has any one of a one-dimensional pore, a two-dimensional pore and a three-dimensional pore defined by a framework structure of the zeolite type compound, and an enlarged diameter portion different from any one of the one-dimensional pore, the two-dimensional pore and the three-dimensional pore, andthe catalytic material exists at least at the enlarged diameter portion.4. The catalyst structure according to claim 3 , wherein the enlarged diameter portion makes a plurality of pores forming any one of the one-dimensional pore claim 3 , the two-dimensional pore and the three-dimensional pore communicate with each other.5. The catalyst structure according to claim 3 , wherein an average particle diameter of the metal fine particles is greater than an average inner diameter of the channels and is equal to or smaller than an inner diameter of the enlarged diameter portion.6. The catalyst structure according to claim 1 , wherein a metal ...

Подробнее
Номер записи: 81
06-02-2020 дата публикации

PHOTOCATALYTIC CARBON FILTER

Номер: US20200038840A1
Автор: Chae Soryong, Noeiaghaei Tahereh, OH Yoontaek
Принадлежит:

Provided herein are photocatalytic carbon filters for the removal impurities such as microorganisms, organic compounds, algal toxins, and their degradation by-products from water and wastewater. The photolytic carbon filters comprise a porous titanium substrate comprising TiOnanotube arrays and multi-wall carbon nanotubes disposed on the TiOnanotube arrays. Also provided herein are methods of manufacture and methods of use of the disclosed photocatalytic carbon filters. 1. A photocatalytic carbon filter comprising:{'sub': '2', 'a porous titanium substrate comprising TiOnanotube arrays; and'}multi-wall carbon nanotubes disposed on the porous titanium substrate.2. The photocatalytic carbon filter of claim 1 , wherein the porous titanium substrate comprises pores having a diameter of from about 0.2 to about 2.5 μm.3. The photocatalytic carbon filter of claim 1 , further comprising hydrophilic functional groups bound to at least one of the porous titanium substrate or multi-wall carbon nanotubes.4. The photocatalytic carbon filter of claim 3 , wherein the hydrophilic functional groups are selected from the group consisting of hydroxyl groups claim 3 , carboxylic groups claim 3 , and combinations thereof.5. A method of making a photocatalytic carbon filter comprising:{'sub': '2', 'forming TiOnanotube arrays from a titanium substrate by anodic oxidation; and'}{'sub': '2', 'growing multi-wall carbon nanotubes on the TiOnanotube arrays by thermal chemical vapor deposition.'}8. The method of claim 7 , wherein the catalyst is ferrocene.9. The method of claim 7 , wherein the temperature of the first zone is increased to about 250° C. at a rate of 3° C./min.10. The method of claim 7 , wherein the temperature of the second zone is increased to about 770° C. at a rate of 10° C./min.11. The method of claim 10 , wherein the dual-zone reactor comprises a quartz cylinder having an inner diameter of from about 4.5 cm to about 10 cm and a length of about 150 cm.12. The method of claim ...

Подробнее
Номер записи: 82
06-02-2020 дата публикации

SCR CATALYST AND ITS PREPARATION METHOD AND APPLICATIONS

Номер: US20200038845A1
Автор: Ding Zhiyong, Fan Rongrong, GUO XIN, Li Yuan, Li Zhaoqiang, Song Jing, Song Lihua, Song Yanhai, WANG Rong, Wang Yan, Wang Yu, Zhang Cheng, Zhao Wenyi
Принадлежит:

A method for preparing an SCR catalyst may include: (1) placing a first aqueous solution containing a titanium oxide and a tungstate in an electric field environment, adjusting the pH value of the first aqueous solution, and adjusting the current direction of the electric field environment to obtain a first mixture; (2) providing a second mixture by, in the electric field environment, adding dropwise a second aqueous solution containing a soluble salt of one or more active components, a copper-organic polyamine complex and a dispersant to the first mixture, and adjusting the current direction; and (3) processing the second mixture to obtain the SCR catalyst. The one or more active components may be selected from Ce, Zr, Cu, Fe, Pr and Sc. 1. A method for preparing an SCR catalyst , the method comprising(1) placing a first aqueous solution containing a titanium oxide and a tungstate in an electric field environment, adjusting the pH value of the first aqueous solution, and adjusting a current direction of the electric field environment to obtain a first mixture;(2) in the electric field environment, adding dropwise a second aqueous solution containing a soluble salt of one or more active components, a copper-organic polyamine complex and a dispersant to the first mixture, and adjusting the current direction to obtain a second mixture, wherein the one or more active components are selected from Ce, Zr, Cu, Fe, Pr and Sc; and(3) processing the second mixture to obtain the SCR catalyst.2. The method according to claim 1 , wherein step (1) further comprises:adjusting the current direction to a direction A when the pH value of the first aqueous solution is <5;adjusting the current direction to a direction B when the pH value of the first aqueous solution ranges from 5-9; andadjusting the current direction to the direction A when the pH value of the first aqueous solution ranges from 9-10;wherein the direction A and the direction B are opposite.3. The method according to ...

Подробнее
Номер записи: 83
18-02-2021 дата публикации

METHOD FOR MANUFACTURING ELECTROLESS PLATING SUBSTRATE AND METHOD FOR FORMING METAL LAYER ON SURFACE OF SUBSTRATE

Номер: US20210046455A1
Автор: KAO Yu-Hsiang, WEI TZU-CHIEN
Принадлежит:

The instant disclosure provides a method for manufacturing an electroless plating substrate and a method for forming a metal layer on a surface of a substrate. The method for preparing the electroless plating substrate includes: providing a substrate; attaching a self-adsorbed catalyst composition to a surface of the substrate; and performing an electroless metal deposition for forming an electroless metal layer on the surface of the substrate. The self-adsorbed catalyst composition includes a colloidal nanoparticle and a silane compound. The colloidal nanoparticle includes a palladium nanoparticle and a capping agent enclosing the palladium nanoparticle. The silane compound has at least one amino group to interact with the colloidal nanoparticle. A covalent bond between the silane compound and the surface of the substrate is formed through the at least one silane group of the silane compound. The colloid nanoparticle has a particle size ranging from 5 to 10 nanometers. 1. A method for manufacturing an electroless plating substrate , including:providing a substrate;attaching a self-adsorbed catalyst composition to a surface of the substrate, wherein the self-adsorbed catalyst composition includes a colloidal nanoparticle and a silane compound, the colloidal nanoparticle includes a palladium nanoparticle and a capping agent enclosing the palladium nanoparticle, and the silane compound has at least one amino group to interact with the colloidal nanoparticle, a covalent bond between the silane compound and the surface of the substrate is formed through a silane group of the silane compound, and the colloid nanoparticle has a particle size ranging from 5 to 10 nanometers; andperforming an electroless metal deposition for forming an electroless metal layer on the surface of the substrate.2. The method according to claim 1 , wherein claim 1 , the step of attaching the self-adsorbed catalyst composition to the surface of the substrate further includes: immersing the ...

Подробнее
Номер записи: 84
18-02-2021 дата публикации

Exhaust gas purification catalyst

Номер: US20210046457A1
Автор: Hiroki NIHASHI
Принадлежит: Cataler Corp

An exhaust gas purification catalyst including particles of a catalyst metal supported on secondary particles of an inorganic oxide, wherein when scanning transmission electron microscope-energy dispersive X-ray line analysis is performed from a surface of the secondary particles toward a center thereof, a support density of the catalyst metal on a surface side of the secondary particles is greater than the support density of the catalyst metal in a center part of the secondary particles.

Подробнее
Номер записи: 85
18-02-2021 дата публикации

METAL CATALYST SYNTHESIS AND ACID/METAL BIFUNCTIONAL CATALYST SYSTEMS THEREOF

Номер: US20210046460A1
Автор: Bai Chuansheng, Cunningham Majosefina, Daaka Jihad M., Kamakoti Preeti, Ramkrishnan Aruna
Принадлежит:

Methods of producing metal catalysts can include mixing two or more metal salts and an aluminum salt in water to produce a metal catalyst precursor solution having a pH of about 2.5 to about 4.0; mixing the metal catalyst precursor solution and a basic solution having a pH of about 10 to about 13 to produce a mixture with a pH of about 6 to about 7 and a precipitate; producing a powder from the precipitate; and calcining the powder to produce a metal catalyst. Such metal catalysts may be useful in producing bifunctional catalyst systems that are useful in, among other things, converting syngas to dimethyl ether in a single reactor. 1. A method comprising:mixing two or more metal salts and an aluminum salt in water to produce a metal catalyst precursor solution having a pH of about 2.5 to about 4.0;mixing the metal catalyst precursor solution and a basic solution having a pH of about 10 to about 13 to produce a mixture with a pH of about 6 to about 7 and a precipitate;producing a powder from the precipitate; andcalcining the powder to produce a metal catalyst.2. The method of claim 1 , wherein producing the powder from the precipitate comprises:washing the precipitate;drying the precipitate; andgrinding the precipitate, wherein the powder comprises 5 wt % or less of the water.3. The method of claim 1 , wherein the metal catalyst precursor solution is at 40° C. to 90° C. when mixing with the basic solution.4. The method of claim 1 , wherein the basic solution comprises sodium carbonate claim 1 , sodium hydroxide claim 1 , ammonia hydroxide claim 1 , ammonia carbonate claim 1 , sodium hydrogen bicarbonate claim 1 , and any combination thereof.5. The method of claim 1 , wherein the two or more metal salts comprise a first metal salt that is a salt of a first metal selected from the group consisting of Cu claim 1 , Cr claim 1 , Ag claim 1 , Au claim 1 , Ru claim 1 , Rh claim 1 , Pd claim 1 , Re claim 1 , Os claim 1 , Ir claim 1 , and Pt and a second metal salt that is a ...

Подробнее
Номер записи: 86
18-02-2021 дата публикации

METAL CATALYSTS WITH LOW -ALKALI METAL CONTENT AND ACID/METAL BIFUNCTIONAL CATALYST SYSTEMS THEREOF

Номер: US20210046461A1
Автор: Bai Chuansheng, Cunningham Majosefina, Daaka Jihad M., Kamakoti Preeti, Kovvali Anjaneya S., Lee Anita S., Ramkrishnan Aruna
Принадлежит:

Methods of producing metal catalysts can include mixing two or more metal salts and an aluminum salt in water to produce a metal catalyst precursor solution; mixing the metal catalyst precursor solution and an alkali metal buffer solution to produce a precipitate; ion exchanging the alkali metal in the precipitate for a non-alkali cation to produce a low-alkali metal precipitate comprising 3 wt % or less alkali metal by weight of the precipitate on a dry basis; producing a powder from the low-alkali metal precipitate; and calcining the powder to produce a metal catalyst. Such metal catalysts may be useful in producing bifunctional catalyst systems that are useful in, among other things, converting syngas to dimethyl ether in a single reactor 1. A method comprising:mixing two or more metal salts and an aluminum salt in water to produce a metal catalyst precursor solution;mixing the metal catalyst precursor solution and an alkali metal buffer solution to produce a precipitate;ion exchanging the alkali metal in the precipitate for a non-alkali cation to produce a low-alkali metal precipitate comprising 3 wt % or less alkali metal by weight of the precipitate on a dry basis;producing a powder from the low-alkali metal precipitate; andcalcining the powder to produce a metal catalyst.2. The method of claim 1 , wherein ion exchanging comprises contacting the precipitate with the non-alkali cation.3. The method of claim 1 , wherein ion exchanging comprises dialysis.4. The method of claim 1 , wherein ion exchanging comprises electrochemical ion exchange.5. The method of claim 1 , wherein producing the powder from the low-alkali metal precipitate comprises:washing the low-alkali metal precipitate;drying the low-alkali metal precipitate; andgrinding the low-alkali metal precipitate, wherein the powder comprises 5 wt % or less of the water.6. The method of claim 1 , wherein the alkali metal buffer solution is at 40° C. to 90° C. when mixing with the metal catalyst precursor ...

Подробнее
Номер записи: 87
18-02-2021 дата публикации

HIGH-YIELD SYNTHESIS OF NANOZEOLITE Y CRYSTALS OF CONTROLLABLE PARTICLE SIZE AT LOW TEMPERATURE

Номер: US20210046463A1
Автор: ALHASSAN Saeed, KATSIOTIS Marios S., TZITZIOS Vasileios
Принадлежит:

The present application relates to a method for synthesizing nanozeolite Y crystals, nanozeolite Y crystals obtainable by said method, and the use of the synthesized nanozeolite Y crystals in cracking hydrocarbons, as molecular sieves or as ion-exchangers. 1. A method for synthesizing nanozeolite Y crystals comprising the following steps:a) Preparing a first aqueous solution comprising a silicate source and quinuclidine;b) Preparing a second aqueous solution comprising an aluminate source and an alkali hydroxide;c) Combining the first and the second aqueous solution to obtain an aqueous reaction mixture;d) Incubating the aqueous reaction mixture to obtain nanozeolite Y crystals;e) Washing the obtained nanozeolite Y crystals with an aqueous washing buffer;f) Drying the washed nanozeolite Y crystals to remove residual crystalline water; andg) Calcining the washed nanozeolite Y crystals.2. The method of claim 1 , wherein the alkali hydroxide is sodium hydroxide andwherein the method comprises the additional steps:h) Mixing the calcined nanozeolite Y crystals with a third aqueous solution comprising ammonium ions to exchange the sodium ions of the calcined nanozeolite Y crystals against ammonium ions;i) Washing the ammonium containing nanozeolite Y crystals with an aqueous washing buffer;j) Drying the washed nanozeolite Y crystals to remove residual crystalline water; andk) Calcining the washed nanozeolite Y crystals.3. The method of claim 2 , wherein steps h) to k) are repeated to reduce the amount of Na ions in the calcined nanozeolite Y crystals to{'sup': '+', 'a) less than 5% Na ions,'}{'sup': '+', 'b) less than 3% Na ions, or'}{'sup': '+', 'c) less than 1% Na ions.'}4. The method according to claim 1 , a) between 0.0125 and 0.24 mol %,', 'b) between 0.05 and 0.18 mol %, or', 'c) between 0.09 and 0.11 mol %., 'wherein in the aqueous reaction mixture quinuclidine is contained in a fraction of'}5. The method according to claim 1 ,{'sub': '4', 'sup': '4−', 'claim-text ...

Подробнее
Номер записи: 88
18-02-2021 дата публикации

ACID/METAL BIFUNCTIONAL CATALYST PRODUCED BY EXTRUSION

Номер: US20210046464A1
Автор: Bai Chuansheng, Daaka Jihad M., Kamakoti Preeti, Kovvali Anjaneya S., Lee Anita S., Ramkrishnan Aruna
Принадлежит:

A method of producing bifunctional catalysts by extrusion may include mixing an acid catalyst, a metal catalyst, optionally a binder, and a fluid to produce a dough; extruding the dough to form an extrudate; producing a powder from the extrudate; and calcining the powder to produce an acid/metal bifunctional catalyst. Such acid/metal bifunctional catalysts may be useful in, among other things, converting syngas to dimethyl ether in a single reactor. 1. A method comprising:mixing an acid catalyst, a metal catalyst, a binder, and a fluid to produce a dough;extruding the dough to form an extrudate;producing a powder from the extrudate; andcalcining the powder to produce an acid/metal bifunctional catalyst.2. The method claim 1 , wherein producing the powder from the extrudate comprises:drying the extrudate; andgrinding the extrudate before or after drying, wherein the powder comprises 5 wt % or less of the fluid.3. The method of further comprising:drying the powder.4. The method of further comprising:heating the dough while extruding to a temperature within 20° C. of a boiling point of the fluid.5. The method of claim 1 , wherein the acid catalyst is selected from the group consisting of a zeolite claim 1 , an ion exchanged zeolite claim 1 , a molecular sieve claim 1 , a metal oxide claim 1 , and any combination thereof6. The method of claim 1 , wherein the metal catalyst is a M1/M2/A1 catalyst claim 1 , wherein M1 is selected from the group consisting of Cu claim 1 , Cr claim 1 , Ag claim 1 , Au claim 1 , Ru claim 1 , Rh claim 1 , Pd claim 1 , Re claim 1 , Os claim 1 , Ir claim 1 , Pt claim 1 , and any combination thereof claim 1 , wherein M2 is selected from the group consisting of Ti claim 1 , V claim 1 , Cr claim 1 , Mn claim 1 , Fe claim 1 , Co claim 1 , Ni claim 1 , Zn claim 1 , a rare earth metal claim 1 , a La series metal claim 1 , a Y series metal claim 1 , and any combination thereof claim 1 , and wherein M1 and M2 are different.7. The method of claim 1 , ...

Подробнее
Номер записи: 89
18-02-2016 дата публикации

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

Номер: US20160045898A1
Автор: Alves Rodrigues Leonor, Galindo Sese Edurne, LLORCA PIQUE Jordi, Mendoza Gomez Ernest, Santiago Redondo Marta
Принадлежит: GOLDEMAR SOLUTIONS S.L.

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

Подробнее
Номер записи: 90
18-02-2021 дата публикации

METHOD OF PREPARING ZEOLITE NANOSHEET VIA SIMPLE CALCINATION PROCESS AND ZEOLITE NANOSHEET PARTICLE PREPARED THEREBY

Номер: US20210047193A1
Автор: CHOI Jungkyu, Jang Eun-Hee, LEE Kwan Young
Принадлежит: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION

Disclosed are a method of preparing a zeolite nanosheet and a zeolite nanosheet particle prepared thereby, and more particularly a method of preparing a zeolite nanosheet capable of preparing a monolayer zeolite nanosheet through a simple process of mixing a multilayer zeolite precursor with a swelling agent to swell the multilayer zeolite precursor and drying and calcining the multilayer zeolite precursor, wherein the monolayer zeolite nanosheet is useful to separate a catalyst or gas, and a zeolite nanosheet particle prepared thereby. 1. A method of preparing a monolayer zeolite nanosheet comprising:(a) mixing a multilayer zeolite precursor with water and a swelling agent to swell intra-layers of the multilayer zeolite precursor; and(b) recovering a solid material from the mixture containing a swollen zeolite precursor, and then calcining the solid material to obtain a monolayer zeolite nanosheet.2. The method of preparing a monolayer zeolite nanosheet of claim 1 , wherein the swelling agent is a mixture of a salt compound having a functional group of alkyltrimethylammonium and a salt compound having a functional group of tetrapropylammonium.3. The method of preparing a monolayer zeolite nanosheet of claim 2 , wherein the salt compound having the functional group of alkyltrimethylammonium is one or more selected from a group consisting of dodecyltrimethylammonium bromide claim 2 , cetrimonium bromide and trimethyloctadecylammonium bromide.4. The method of preparing a monolayer zeolite nanosheet of claim 2 , wherein the salt compound having the functional group of tetrapropylammonium is one or more selected from the group consisting of tetrapropylammonium bromide claim 2 , tetrapropylammonium fluoride claim 2 , tetrapropylammonium chloride and tetrapropylammonium hydroxide.5. The method of preparing a monolayer zeolite nanosheet of claim 1 , wherein an Si/Al ratio of the zeolite precursor is 10 to 200.6. The method of preparing a monolayer zeolite nanosheet of ...

Подробнее
Номер записи: 91
16-02-2017 дата публикации

Ni-Pt-ZrO2 NANOCRYSTALLINE OXIDE CATALYST AND PROCESS THEREOF USEFUL FOR THE PRODUCTION OF SYNGAS BY COMBINING OXY- DRY REFORMING OF NATURAL GAS

Номер: US20170043324A1
Автор: Bal Rajaram, Bordoloi Ankur, Goyal Reena, Konathala Laxmi Narayan Sivakumar, Pendem Chandrashekar, Sarkar Bipul
Принадлежит:

The present invention provides a process and catalyst for the autothermal and dry reforming of methane to produce syngas. The process provides a direct single step gas phase reforming of methane or natural gas to syngas over Ni—Pt supported nanocrystalline ZrO. The process provides methane conversion of 54-99% with H/CO ratio of 1.14 to 1.42 (mol %) in the temperature range of 250 to 750 800° C. at atmospheric pressure. 1. Ni—Pt—ZrOnanocrystalline oxide catalyst , wherein Ni is in the range of 2-10 wt % , Pt is in the range of 0.5 to 4 wt % and ZrOin the range of 97.5 to 86 wt % having particle size in the range of 30-80 nm.2. Ni—Pt—ZrOnanocrystalline oxide catalyst as claimed in claim 1 , wherein said catalyst is useful for partial oxidation and dry reforming of methane for the production of syngas via gas phase reforming of methane or natural gas.3. Ni—Pt—ZrOnanocrystalline oxide catalyst as claimed in claim 1 , having following characteristics:{'sup': '2', 'BET surface area: 85 m/g;'}particle size of the catalyst ranges between 30-60 nm;Catalyst runs for 100 hrs without deactivation.4. A process for the preparation of Ni—Pt—ZrOnanocrystalline oxide catalyst as claimed in claim 1 , wherein the said process comprising the steps of:{'sub': 2', '2', '2', '4, 'i. dissolving 0.025 to 0.0372 mol of ZrOClin 2.78 to 5.56 mol of water, wherein the mole ratio of ZrOCl:HO ranges between 180 400 in the solution with the pH in the range of 3-10 using NHOH solution;'}transferring the mixture of step i) to a stainless steel autoclave and heating at a temperature in the range of 50 to 70° C. for a period in the range of 1 to 2 hrs to obtain white precipitate;filtering, washing and drying the white precipitate as obtained in step ii) at a temperature in the range of 100 to 130° C. for period in the range of 10 to 18 hrs;{'sub': '2', 'iv. calcining the materials as obtained in step iii) at a temperature in the range of 300 to 800° C. for period in the range of 4 to 6 hrs in air to ...

Подробнее
Номер записи: 92
15-02-2018 дата публикации

CATALYST COMPRISING GOLD HOMOGENEOUSLY DISPERSED IN A POROUS SUPPORT

Номер: US20180043337A1
Автор: Cabiac Amandine, Hugon Antoine
Принадлежит: IFP ENERGIES NOUVELLES

A catalyst comprising gold and a porous support containing at least one refractory oxide, in which the gold content is in the range 0.01% to 5% by weight with respect to the total weight of catalyst, and in which the particles of gold are distributed homogeneously through said porous support and have a dimension, measured by transmission electron microscopy, in the range 0.5 to 5 nm. 1. A catalyst comprising gold and a porous support containing at least one refractory oxide , in which the gold content is in the range 0.01% to 5% by weight with respect to the total weight of catalyst , and in which the particles of gold are distributed homogeneously through said porous support and have a dimension , measured by transmission electron microscopy , in the range 0.5 to 5 nm.2. The catalyst as claimed in claim 1 , characterized in that the mean particle size of the gold claim 1 , estimated by transmission electron microscopy claim 1 , is in the range 0.5 nm to 3 nm.3. The catalyst as claimed in claim 1 , characterized in that the metallic dispersion D of the gold is in the range 30% to 100%.4. The catalyst as claimed in claim 1 , characterized in that the porous support is selected from magnesium oxide claim 1 , aluminium oxide (alumina) claim 1 , silicon oxide (silica) claim 1 , zirconium oxide claim 1 , thorium oxide or cerium oxide claim 1 , taken alone or as a mixture.5. The catalyst as claimed in claim 1 , characterized in that said porus support is selected from silica claim 1 , alumina and silica-alumina.6. The catalyst as claimed in claim 1 , characterized in that it comprises a residual chlorine content of less than 200 ppm by weight with respect to the total weight of catalyst.7. A process for the preparation of a catalyst as claimed in claim 1 , said process comprising the following steps:a) preparing and aqueous solution containing a precursor of gold;b) inpregnating a porous support containing at least one refractory oxide with said solution obtained in step ...

Подробнее
Номер записи: 93
15-02-2018 дата публикации

CARBON NANOTUBE-COATED CATALYST PARTICLE

Номер: US20180043339A1
Автор: ATSUMI Ryosuke, NODA Reiji, WANIBUCHI Kyoya
Принадлежит: National University Corporation Gunma University

The present invention applies carbon nanotubes to catalyst particles, thereby providing catalyst particles which are usable in fluidized bed reactions, have high catalytic activity, and are easy to handle. The catalyst particles are carbon nanotube-coated catalyst particles which each comprise a carrier particle and a coating layer disposed on the surface of the carrier particle, wherein the carrier particles are flowable in fluidized beds and the coating layer comprises carbon nanotubes which have metal nanoparticles supported thereon and/or which have been doped with nitrogen or boron. The carbon nanotube-coated catalyst particles are flowable in fluidized bed reactions. 1. A carbon nanotube-coated catalyst particle comprising a carrier particle and a coating layer disposed on a surface of the carrier particle , wherein:the carrier particle is flowable in a fluidized bed;the coating layer comprises a carbon nanotube which has a metal nanoparticle supported thereon and/or which has been doped with nitrogen or boron; andthe catalyst particle is flowable in a fluidized bed reaction.2. The carbon nanotube-coated catalyst particle of claim 1 , wherein the coverage of the coating layer comprising the carbon nanotube is 10% or more and 50% or less.3. The carbon nanotube-coated catalyst particle of claim 1 , wherein the carrier particle is a porous ceramic particle.4. The carbon nanotube-coated catalyst particle of claim 3 , wherein the porous ceramic particle includes at least one selected from the group consisting of alumina claim 3 , silica claim 3 , zeolite claim 3 , titanium oxide claim 3 , zirconia claim 3 , lanthanum oxide and ceria.5. The carbon nanotube-coated catalyst particle of claim 1 , wherein the metal nanoparticle includes at least one selected from the group consisting of ruthenium claim 1 , iron and nickel.6. A method of ammonia decomposition claim 1 , comprising decomposing ammonia using the carbon nanotube-coated catalyst particle of as an ammonia ...

Подробнее
Номер записи: 94
03-03-2022 дата публикации

A PREPARATION METHOD OF A NANOMETER METAL OXIDE SUPPORTED CARRIER BASED ON ANODIC OXIDATION

Номер: US20220062863A1
Автор: FENG Daolun, LIN Yue, QIAN Qun
Принадлежит: Shanghai Maritime University

Disclosed is a preparation method of a nanometer metal oxide supported carrier based on anodic oxidation, comprising: Step 1: adding electrolyte to a reaction pool, and fixing the cathode and the anode oppositely, wherein the cathode is a metal plate that is identical to the nano-metal oxide, and the anode is a carrier metal material; Step 2: stirring the electrolyte at a constant speed, wherein the revolution speed is not lower than 500 rpm; Step 3: switching power on; setting the output voltage between 10v and 50v; and subjecting the metal plate of the anode to anodic oxidation reaction, wherein metal oxide nanotubes/nano particles are generated on the surface; under the action of stirring, the metal oxide nanotubes/nano particles on the anode surface are dissolved and shed off into the electrolyte; under the action of the electric field force, the dissolved and shed-off nano fragments migrate towards the cathode and are adhered to the surface of the cathode material, thereby forming a nano-metal oxide film. The film preparation method according to the disclosure offers advantages such as mild condition, simple instrumentation, easy operation, and low cost; the prepared film has a good load effect such that the metal oxide can hardly be shed off.

Подробнее
Номер записи: 95
03-03-2022 дата публикации

CRACKING CATALYST COMPRISING PLATINUM ENCAPSULATED IN MICROPOROUS SILICA

Номер: US20220062876A1
Автор: Almana Noor, Ding Lianhui
Принадлежит: Saudi Arabian Oil Company

According to the subject matter of the present disclosure, a cracking catalyst may comprise zeolite, alumina, nickel oxide, hydrogenation metal, and a core shell Pt/SiO. The core shell Pt/SiOmay comprise a platinum nanoparticle encapsulated by a microporous SiOlayer. 1. A cracking catalyst comprising zeolite , alumina , nickel oxide , a hydrogenation metal , and a core shell Pt/SiO , wherein the core shell Pt/SiOcomprises a platinum nanoparticle encapsulated by a microporous SiOlayer.2. The cracking catalyst of claim 2 , wherein an average pore size of the microporous SiOlayer is from 0.25 nm to 1.5 nm.3. The cracking catalyst of claim 2 , wherein a maximum pore size of the microporous SiOlayer is 1.5 nm.4. The cracking catalyst of claim 1 , wherein the microporous SiOlayer has an average thickness of 6 nm to 10 nm.5. The cracking catalyst of claim 4 , wherein the microporous SiOlayer has a maximum thickness and a minimum thickness claim 4 , the maximum thickness is less than 4 nm greater than the minimum thickness.6. The cracking catalyst of claim 1 , wherein the Pt nanoparticle is from 0.5 nm to 6 nm in diameter.7. The cracking catalyst of claim 1 , wherein the hydrogenation metal is one or both of MoOand WO.8. The cracking catalyst of claim 1 , wherein the hydrogenation metal comprises WOand the catalyst comprises from 20 wt. % to 26 wt. % WO claim 1 , from 4 wt. % to 6 wt. % NiO claim 1 , from 10 wt. % to 60 wt. % zeolite claim 1 , from 1 wt. % to 10 wt. % core shell Pt/SiO claim 1 , and from 10 wt. % to 60 wt. % alumina.9. The cracking catalyst of claim 1 , wherein the hydrogenation metal comprises MoOand the catalyst comprises from 14 wt. % to 16 wt. % MoO claim 1 , from 4 wt. % to 6 wt. % NiO claim 1 , from 10 wt. % to 50 wt. % zeolite claim 1 , from 1 wt. % to 10 wt. % core shell Pt/Sift claim 1 , and from 20 wt. % to 70 wt. % alumina.10. The cracking catalyst of claim 1 , wherein the zeolite comprises ultra-stable zeolite Y (USY).11. A method of using the ...

Подробнее
Номер записи: 96
25-02-2016 дата публикации

Metal Oxide Nanoparticle-Based Magnetic Resonance Imaging Contrast Agent with a Central Cavity

Номер: US20160051708A1
Автор: KIM Min sik, KIM Taek Hoon, Lee Kwang Yeol, Vu Ngoc Phan
Принадлежит:

The present invention relates to a magnetic resonance imaging (MRI) contrast agent, particularly an MRI contrast agent derived from nanoparticle that is porous first metal-doped second metal oxide nanoparticle with a central cavity, and a method for producing the same. The MRI contrast agent made in accordance with the present invention can be used not only as a drug-delivery agent for therapy but also as an MRI contrast agent for diagnosis. 1. A nanoparticle-based MRI contrast agent comprising a porous metal oxide nanoparticle with a central cavity and being used not only as a drug-delivery agent but also as an MRI contrast agent.2. The nanoparticle-based MRI contrast agent according to claim 1 , wherein the porous metal oxide is paramagnetic or superparamagnetic metal oxides.3. The nanoparticle-based MRI contrast agent according to claim 2 , wherein the paramagnetic or superparamagnetic metal oxides are at least one selected from the group consisting of iron oxide claim 2 , chromium oxide claim 2 , gadolinium oxide claim 2 , cobalt oxide and nickel oxide.4. The nanoparticle-based MRI contrast agent according to claim 1 , wherein the central cavity has at least one shape selected from the group consisting of octahedral claim 1 , cross-shaped claim 1 , urchin-shaped claim 1 , and cubic.5. The nanoparticle-based MRI contrast agent according to claim 2 , wherein the paramagnetic or superparamagnetic metal oxides comprise the doped metal ions different from the metal of the paramagnetic or superparamagnetic metal oxides.6. A method for producing an MRI contrast agent derived from nanoparticle that is porous first metal-doped second metal oxide nanoparticle with a central cavity claim 2 , comprising the following steps:A) synthesizing first metal oxide nanoparticles under inert gas environment;B) forming an epitaxial layer of second metal oxide on the surface of first metal oxide nanoparticles under inert gas environment;C) maintaining the formation of the layer of ...

Подробнее
Номер записи: 97
25-02-2021 дата публикации

Molybdenum sulfide, method for producing same, and hydrogen generation catalyst

Номер: US20210053037A1
Автор: Jian-Jun Yuan, Kaori Kawamura, Koichiro Matsuki, Masato Otsu, Minoru Tabuchi, Naoto Sakurai, Yuichi Satokawa
Принадлежит: DIC Corp

Provided is a molybdenum sulfide that is ribbon-shaped and particularly suitable for a hydrogen generation catalyst. Disclosed are a ribbon-shaped molybdenum sulfide, in which 50 particles as measured by observation with a scanning electron microscope (SEM) have a shape of, on average, 500 to 10000 nm in length, 10 to 1000 nm in width, and 3 to 200 nm in thickness; a method for producing the ribbon-shaped molybdenum sulfide, including: (1) heating a molybdenum oxide at a temperature of 200 to 1000° C. in the presence of a sulfur source; or (2) heating a molybdenum oxide at a temperature of 100 to 800° C. in the absence of a sulfur source, and then heating the molybdenum oxide at a temperature of 200 to 1000° C. in the presence of a sulfur source; and a hydrogen generation catalyst including the ribbon-shaped molybdenum sulfide.

Подробнее
Номер записи: 98
14-02-2019 дата публикации

METHOD FOR SYNTHESIZING LACTIDE BY MEANS OF CATALYSIS OF LACTID ACID

Номер: US20190047976A1
Автор: Daoud Walid, HU YUNZI, Lin Carol Sze Ki
Принадлежит: The Hong Kong Research Institute of Textiles and Apparel Limited

The present invention relates to a method for the catalytic synthesis of lactide from lactic acid. The method relates to the synthesis of lactide from lactic acid under the catalysis of a zinc oxide nanoparticle aqueous dispersion as a catalyst. The present invention has four technical characteristics: I. the zinc oxide nanoparticle aqueous dispersion catalyst has a sufficient surface area, and the size of nanoparticles is merely 30-40 nm, providing a sufficient contact area between the substrate (lactic acid) and the catalyst; II. the new catalyst has a milder catalytic effect on polymerization, allowing the molecular weight distribution of a prepolymer within a range of 400-1500 g/mol, which is advantageous for depolymerization to proceed; III. the new catalyst is stable, thus avoiding oxidation or carbonization in a high temperature reaction; and IV. the new catalyst has a low toxicity and a small threat to human health. 1. A method for the catalytic synthesis of lactide from lactic acid , characterized in that the synthesis of lactide from lactic acid is under the catalysis of a zinc oxide aqueous nanoparticle dispersion as a catalyst.2. The method for the catalytic synthesis of lactide from lactic acid according to claim 1 , characterized in that said zinc oxide nanoparticle aqueous dispersion is a dispersion of zinc oxide nanoparticles in water; and in said zinc oxide nanoparticle aqueous dispersion claim 1 , the particle size of the zinc oxide nanoparticles is 30-40 nm claim 1 , and the mass percentage of the zinc oxide nanoparticles is 20%.3. The method for the catalytic synthesis of lactide from lactic acid according to claim 1 , characterized in that the method comprises the following steps:{'b': '100', 'S. Dehydration: lactic acid and a catalyst are mixed at a ratio under the conditions of 60-80° C. and 60 kPa, and subjected to a dehydration reaction for 2 hours to remove free water from the lactic acid to obtain a dehydration product;'}{'b': '200', 'S. ...

Подробнее
Номер записи: 99
13-02-2020 дата публикации

SINTER-RESISTANT CATALYST SYSTEMS

Номер: US20200047159A1
Автор: Li Wei, Qi Gongshin, Xiao Xingcheng, Yang Ming
Принадлежит:

Sinter-resistant catalyst systems include a catalytic substrate comprising a plurality of metal catalytic nanoparticles bound to a metal oxide catalyst support, and a coating of oxide nanoparticles disposed on the metal catalytic nanoparticles and optionally on the metal oxide support. The oxide nanoparticles comprise one or more lanthanum oxides and optionally one or more barium oxides, and additionally one or more oxides of aluminum, cerium, zirconium, titanium, silicon, magnesium, zinc, iron, strontium, and calcium. The metal catalytic nanoparticles can include ruthenium, rhodium, palladium, osmium, iridium, and platinum, rhenium, copper, silver, and/or gold. The metal oxide catalyst support can include one or more metal oxides selected from the group consisting of Al2O3, CeO2, ZrO2, TiO2, SiO2, La2O3, MgO, and ZnO. The coating of oxide nanoparticles is about 0.1% to about 50% lanthanum and barium oxides. The oxide nanoparticles can further include one or more oxides of magnesium and/or cobalt. 2. The catalyst system of claim 1 , wherein the metal catalytic nanoparticles comprise one or more of ruthenium claim 1 , rhodium claim 1 , palladium claim 1 , osmium claim 1 , iridium claim 1 , and platinum claim 1 , rhenium claim 1 , copper claim 1 , silver claim 1 , and gold.3. The catalyst system of claim 1 , wherein the metal oxide catalyst support comprises one or more of Al2O3 claim 1 , CeO2 claim 1 , La2O3 claim 1 , ZrO2 claim 1 , TiO2 claim 1 , SiO2 claim 1 , MgO claim 1 , and ZnO.4. The catalyst system of claim 1 , wherein the metal oxide catalyst support comprises one or more of Al2O3 claim 1 , La2O3 claim 1 , ZrO2 claim 1 , and CeO2.5. The catalyst system of claim 1 , wherein the coating of oxide nanoparticles is about 0.1% to about 50% lanthanum oxides.6. The catalyst system of claim 1 , wherein the oxide nanoparticles further comprise one or more oxides of magnesium and/or cobalt.7. The catalyst system of claim 6 , wherein the coating of oxide nanoparticles ...

Подробнее
Номер записи: 100