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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

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Мониторинг СМИ

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

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Применить Всего найдено 3838. Отображено 100.
10-05-2012 дата публикации

Process for producing fuel cell catalyst, fuel cell catalyst obtained by production process, and uses thereof

Номер: US20120115064A1
Автор: Kenichiro Ota, Ryuji Monden, Takuya Imai, Toshikazu Shishikura, Yasuaki Wakizaka
Принадлежит: Showa Denko KK

It is an object of the present invention to provide a production process which can produce a fuel cell catalyst having excellent durability and high oxygen reducing activity. The process for producing a fuel cell catalyst including a metal-containing oxycarbonitride of the present invention includes a grinding step for grinding the oxycarbonitride using a ball mill, wherein the metal-containing oxycarbonitride is represented by a specific compositional formula; balls in the ball mill have a diameter of 0.1 to 1.0 mm; the grinding time using the ball mill is 1 to 45 minutes; the rotating centrifugal acceleration in grinding using the ball mill is 2 to 20 G; the grinding using the ball mill is carried out in such a state that the metal-containing oxycarbonitride is mixed with a solvent containing no oxygen atom in the molecule; and when the ball mill is a planetary ball mill, the orbital centrifugal acceleration mill is 5 to 50 G.

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Номер записи: 1
20-09-2012 дата публикации

Methanation Reaction Methods Utilizing Enhanced Catalyst Formulations and Methods of Preparing Enhanced Methanation Catalysts

Номер: US20120238647A1
Автор: Brian C. Dunn, Joe D. Allison, Scott A. Scholten
Принадлежит: ConocoPhillips Co

Enhanced mixed metal catalysts are provided which allow high conversions of carbon dioxide to methane, in some cases up to about 100% conversion. Methods of preparing enhanced mixed metal catalysts comprise a series of steps involving combining nickel and chromium salts with a nucleation promoter in a base environment to form a gel, allowing the gel to digest to form a solid and a mother liquor, isolating the solid, washing the solid, drying the solid, and thermally treating the solid to form a nickel-chromium catalyst. Methanation processes using the catalysts are also provided. The enhanced mixed metal catalysts provide more efficient conversion and lower operating temperatures for carbon dioxide methanation when compared to conventional methanation catalysts. Additionally, these enhanced catalyst formulations allow realization of higher value product from captured carbon dioxide.

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Номер записи: 2
14-03-2013 дата публикации

METHOD OF SUPPRESSING INCREASE IN SO2 OXIDATION RATE OF NOx REMOVAL CATALYST

Номер: US20130065750A1
Автор: Katsumi Nochi, Masashi Kiyosawa
Принадлежит: Mitsubishi Heavy Industries Ltd

In a NO x removal catalyst used for removing nitrogen oxide in flue gas, when a silica (Si) component as an inhibitor that causes an increase in an SO 2 oxidation rate accumulates on a surface of the NO x removal catalyst, the silica component accumulating on the surface of the NO x removal catalyst is dissolved, thereby regenerating the catalyst. Accordingly, the inhibitor such as the silica component covering the surface of the NO x removal catalyst can be removed, thereby enabling to provide a catalyst without having an increase in the SO 2 oxidation rate of the regenerated NO x removal catalyst.

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Номер записи: 3
04-04-2013 дата публикации

Novel formulation of hexa-aluminates for reforming fuels

Номер: US20130085062A1
Автор: Magali S. Ferrandon
Принадлежит: UChicago Argonne LLC

The invention is directed to a catalyst and a method for making a reforming catalyst for the production of hydrogen from organic compounds that overcomes the problems of catalyst poisoning and deactivation by coking and high temperature sintering, yet provides excellent durability and a long working life in process use. An embodiment is the formation of a unique four-metal ion hexa-aluminate of the formula M1 a M2 b M3 c M4 d Al 11 O 19-α . M1 and M2 are selected from the group consisting of beryllium, magnesium, calcium, strontium, barium, lanthanum, cerium, praseodymium, neodymium, promethium, samarium, and gadolinium. M3 and M4 are selected from the group consisting of chromium, manganese, iron, cobalt, nickel, copper, molybdenum, ruthenium, rhodium, palladium, tungsten, rhenium, osmium, iridium, platinum, wherein 0.010≦a+b+c+d≦2.0. Also, 1≦α≦1. Further, M1≠M2 and M3≠M4.

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Номер записи: 4
02-05-2013 дата публикации

Process for reprocessing spent catalysts

Номер: US20130109560A1
Автор: Florina Corina Patcas, Martin Dieterle, Yong Liu
Принадлежит: BASF SE

The invention relates to a process for reprocessing spent catalysts comprising rare earth metals, and to a process for producing a new styrene catalyst from a spent styrene catalyst.

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Номер записи: 5
09-05-2013 дата публикации

Systems, Devices, and/or Methods for Preparation of Graphene and Graphene Hybrid Composite Via the Pyrolysis of Milled Solid Carbon Sources

Номер: US20130116114A1
Автор: Khe C. Nguyen
Принадлежит: K Tube Tech LLC

Certain exemplary embodiments can provide a system comprising a hybrid composite. The hybrid composite can comprise tubular carbon and graphene produced via pyrolysis of a milled solid carbon source under an unoxidizing environment. When analyzed via X-ray diffraction, the hybrid composite can generate peaks at two theta values of approximately 26.5 degrees, approximately 42.5 degrees, and/or approximately 54.5 degrees.

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Номер записи: 6
16-05-2013 дата публикации

Silver vanadium phosphates

Номер: US20130123517A1
Автор: Andrey Karpov, Cornelia Katharina Dobner, Frank Rosowski, Gerhard Cox, Patrick HUBACH, Robert Glaum, Stephan Schunk
Принадлежит: BASF SE

The invention relates to novel silver vanadium phosphates, catalysts based on these silver vanadium phosphates and the use of these catalysts for carrying out organic reactions in the gas phase.

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Номер записи: 7
13-06-2013 дата публикации

Mixed oxide based catalyst for the conversion of carbon dioxide to syngas and method of preparation and use

Номер: US20130150466A1
Автор: Aghaddin Mamedov, Clark Rea, Shahid N. Shaikh, Xiankuan Zhang
Принадлежит: Saudi Basic Industries Corp

The invention relates to a catalyst and process for making syngas mixtures including hydrogen, carbon monoxide and carbon dioxide. The process comprises contacting a gaseous feed mixture containing carbon dioxide and hydrogen with the catalyst, where the catalyst comprises Mn oxide and an auxiliary metal oxide selected from the group consisting of La, Ca, K, W, Cu, Al and mixtures or combinations thereof. The process enables hydrogenation of carbon dioxide into carbon monoxide with high selectivity, and good catalyst stability over time and under variations in processing conditions. The process can be applied separately, but can also be integrated with other processes, both up-stream and/or down-stream including methane reforming or other synthesis processes for making products like alkanes, aldehydes, or alcohols.

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Номер записи: 8
04-07-2013 дата публикации

Catalyst for producing unsaturated aldehyde and/or unsaturated carboxylic acid, and process for producing unsaturated aldehyde and/or unsaturated carboxylic acid using the catalyst

Номер: US20130172615A1
Автор: Naohiro Fukumoto, Tomoatsu Kawano, Yutaka Takahashi
Принадлежит: NIPPON SHOKUBAI CO LTD

Provided is a catalyst for production of unsaturated aldehyde and/or unsaturated carboxylic acid, which shows excellent mechanical strength and low attrition loss and is capable of producing the object product(s) at a high yield. The catalyst comprises a catalytically active component containing molybdenum, bismuth and iron as the essential ingredients, and inorganic fibers, and is characterized in that the inorganic fibers contain at least an inorganic fiber having an average diameter of at least 8 μm and another inorganic fiber having an average diameter not more than 6 μm.

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Номер записи: 9
11-07-2013 дата публикации

Decomposer containing iron particles for organohalogen compound and method for producing the same

Номер: US20130175468A1
Автор: Taishi Uehara
Принадлежит: Dowa Eco Systems Co Ltd

A decomposer for an organohalogen compound, containing iron particles comprising iron and iron oxide, wherein the iron particles have a metallic iron content of 15% or more by mass, wherein the metallic iron content is a content of metallic iron in the outermost surface layer of the iron particles to which the ion beam etching has been applied twice under the following etching conditions: degree of vacuum in a chamber: 2.0×10 −2 Pa accelerating voltage of an ion gun: 10 kV emission current: 10 mA etching time: 14 seconds. The decomposer need not contain copper and has the ability to satisfactorily decompose an organohalogen compound. A method for producing the decomposer is also provided.

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Номер записи: 10
18-07-2013 дата публикации

Hydrogenation Process Using Catalyst Comprising Ordered Intermetallic Compound

Номер: US20130184507A1
Автор: Juergen Osswald, Juri Grin, Kirill Kovnir, Marc Armbruester, Rainer Giedigkeit, Robert Schloegl, Rolf E. Jentoft, Thorsten Ressler
Принадлежит: Max Planck Gesellschaft zur Foerderung der Wissenschaften eV

The present invention relates to a process for the hydrogenation, in particular the selective hydrogenation of unsaturated hydrocarbon compounds using a hydrogenation catalyst comprising an ordered intermetallic compound. The ordered intermetallic compound comprises at least one metal of type A capable of activating hydrogen, and at least one metal of type B not capable of activating hydrogen, and the structure of the ordered intermetallic compound is such that at least one king of type A metals is mainly surrounded by atoms of the metal of type B. According to another aspect, the present invention is concerned with a catalyst comprising a support and the above ordered intermetallic compound supported on the support. According to still another aspect, the invention pertains to the use of a binary Pd—Ga ordered intermetallic compound as a catalyst. The hydrogenation process and catalysts of the present invention achieve a selectivity to the target compounds, e.g. in the selective hydrogenation of acetylene to ethylene, which is superior to the prior art.

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Номер записи: 11
15-08-2013 дата публикации

Method for the preparation of a catalysed particulate filter and catalysed particulate filter

Номер: US20130210609A1
Автор: Keld Johansen
Принадлежит: Haldor Topsoe AS

Method for the preparation of a catalysed particulate filter and a particulate filter. The method comprises the steps of a) providing a catalyst wash coat with a first catalyst active in burning off of soot and a second catalyst active in selective catalytic reduction of nitrogen oxides; b) coating a particulate filter body with the catalyst wash coat on the dispersion side and the permeate side of the filter body and within partition walls of the filter body; and c) drying and heat treating the coated filter body to obtain the catalysed particulate filter.

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Номер записи: 12
05-09-2013 дата публикации

Method for producing catalysts and catalysts thereof

Номер: US20130231241A1
Автор: David M. Brackenbury, David Waller
Принадлежит: Yara International ASA

The invention relates to a process to produce catalysts by powder injection moulding and the catalysts thereof, wherein the catalysts are made by preparing a ceramic formulation with temperature controlled rheological properties comprising catalytic components, heating the powder formulation up to at least the fluid state transition temperature, shaping a sample by injecting the fluid powder formulation into an injection mould followed by cooling the injected powder formulation below the fluid state transition temperature, de-binding the shaped sample, and sintering the shaped sample to form a ceramic catalyst. Alternatively the ceramic structure may be formed initially followed by a coating of the ceramic structure by one or more catalytic compounds.

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Номер записи: 13
05-09-2013 дата публикации

Silica composite, method for producing the same, and method for producing propylene using the silica composite

Номер: US20130231515A1
Автор: Kenji Akagishi, Ryusuke Miyazaki
Принадлежит: Asahi Kasei Chemicals Corp

The present invention provides a method for producing a silica composite by the steps of: preparing a raw material mixture containing silica and zeolite; drying the raw material mixture to obtain a dried product; and calcining the dried product, wherein the method comprising the step of allowing the raw material mixture to contain phosphoric acid and/or phosphate or bringing a solution of phosphoric acid and/or phosphate into contact with the zeolite and/or the dried product, or a combination thereof to thereby adjust a phosphorus content in the silica composite to 0.01 to 1.0% by mass based on the total mass of the silica composite.

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Номер записи: 14
17-10-2013 дата публикации

Catalysts For The Conversion Of Hydroxypropionic Acid Or Its Derivatives To Acrylic Acid Or Its Derivatives

Номер: US20130274094A1
Автор: Dimitris Ioannis Collias, Fred C. WIREKO, Jane Ellen Godlewski, Janette Villalobos Lingoes, Juan Estaban Velasquez, Marc Andrew Mamak, Nancy Lee Redman-Furey
Принадлежит: Procter and Gamble Co

Catalysts for dehydrating hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures thereof to acrylic acid, acrylic acid derivatives, or mixtures thereof with high yield and selectivity, short residence time, and without significant conversion to undesired side products, such as, for example, acetaldehyde, propionic acid, and acetic acid, are provided. The catalysts are mixed condensed phosphates. Methods of preparing the catalysts are also provided.

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Номер записи: 15
17-10-2013 дата публикации

Catalytic Conversion Of Lactic Acid To Acrylic Acid

Номер: US20130274514A1
Автор: Dimitris Ioannis Collias, Janette Villalobos Lingoes
Принадлежит: Procter and Gamble Co

Disclosed herein is the catalytic dehydration of lactic acid to acrylic acid, which is characterized by a high conversion of lactic acid, a high selectivity for acrylic acid, a high yield of acrylic acid, and correspondingly low selectivity and molar yields for undesired by-products. This is achieved with a particular class of catalysts defined by a mixture of metal-containing phosphate salts that together provide the catalyst with a very high basicity density and low acidity density. Further, the catalyst is believed to be stable and active for lengthy periods heretofore unseen in the art for such dehydration processes.

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Номер записи: 16
31-10-2013 дата публикации

CARRIER FOR NOx REDUCTION CATALYST

Номер: US20130287665A1
Автор: Katsumi Nochi, Masanao Yonemura, Masashi Kiyosawa
Принадлежит: Mitsubishi Heavy Industries Ltd

A NOx reduction catalyst carrier yields a NOx reduction catalyst with an improved permissible dose of poisoning substances such as arsenic. More specifically, the present invention relates to a NOx reduction catalyst carrier comprising TiO 2 , having a honeycomb structure and having a specific surface area greater than 100 m 2 /g.

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Номер записи: 17
31-10-2013 дата публикации

Catalyst for producing monocyclic aromatic hydrocarbon and production method of monocyclic aromatic hydrocarbon

Номер: US20130289325A1
Автор: Masahide Kobayashi, Ryoji Ida, Shinichiro Yanagawa, Yasuyuki Iwasa
Принадлежит: JX Nippon Oil and Energy Corp

The catalyst for producing aromatic hydrocarbon is for producing monocyclic aromatic hydrocarbon having 6 to 8 carbon number from oil feedstock having a 10 volume % distillation temperature of 140° C. or higher and a 90 volume % distillation temperature of 380° C. or lower and contains crystalline aluminosilicate and phosphorus. A molar ratio (P/Al ratio) between phosphorus contained in the crystalline aluminosilicate and aluminum of the crystalline aluminosilicate is from 0.1 to 1.0. The production method of monocyclic aromatic hydrocarbon is a method of bringing oil feedstock having a 10 volume % distillation temperature of 140° C. or higher and a 90 volume % distillation temperature of 380° C. or lower into contact with the catalyst for producing monocyclic aromatic hydrocarbon.

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Номер записи: 18
07-11-2013 дата публикации

Catalyst for the epoxidation of alkenes

Номер: US20130296587A1
Автор: Andreas Lehr, Dirk HENSEL, Tobias Rosendahl, Torsten Mäurer
Принадлежит: BASF SE

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

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Номер записи: 19
14-11-2013 дата публикации

Catalyst for the hydrogenation of unsaturated hydrocarbons and process for its preparation

Номер: US20130303812A1
Автор: Jurgen Hunold, Peter Birke, Peter Kraak, Rainer Schoedel, Reinhard Geyer
Принадлежит: Shell Oil Co

The present invention relates to a catalyst for the hydrogenation of unsaturated hydrocarbons, in particular aromatics with a broad molecular weight range, a process for the production thereof and a process for hydrogenating unsaturated hydrocarbons.

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Номер записи: 20
06-01-2022 дата публикации

CATALYTIC COMPOSITION WITH ADDED COPPER TRAPPING COMPONENT FOR NOx ABATEMENT

Номер: US20220001371A1
Автор: Yuejin Li
Принадлежит: BASF Corp

The present disclosure provides catalyst compositions for NOx conversion and wall-flow filter substrates comprising such catalyst compositions. Certain catalyst compositions include a zeolite with sufficient Cu exchanged into cation sites thereof to give a Cu/Al ratio of 0.1 to 0.5 and a CuO loading of 1 to 15 wt. %; and a copper trapping component (e.g., alumina) including a plurality of particles having a D90 particle size of about 0.5 to 20 microns in a concentration of about 1 to 20 wt. %. The zeolite and copper trapping component can be in the same washcoat layer or can be in different washcoat layers (such that the copper trapping component serves as a “pre-coating” on the wall-flow filter substrate).

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Номер записи: 21
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 ...

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Номер записи: 22
04-01-2018 дата публикации

Method of manufacturing micronized sandstone obtained from ceramics or industrial wastes of ceramic manufacturing containing TiO2 bio-additive, and product thereof

Номер: US20180002234A1
Автор: GASSI ANGELO
Принадлежит:

The present invention discloses a method of manufacturing micronized sandstone obtained from ceramics or industrial wastes of ceramic manufacturing, such as white paste, natural stones or clinker, including TiOas bio-additive, and product obtained by the micronized sandstone thereof. The ceramics and industrial wastes of ceramic are grinded in several steps and the resultant powders are collected by means of individual filters and further combined in a nanopowder micronizer for posterior treatment, where TiOhydrolyzed can be optionally added. This micronized sandstone comprising the bio-additive TiOis used in the production of plasters, mortars, grouts and/or as additive for paints and/or epoxy enriched with TiO. The micronized sandstone bio-additive with TiOcan be additionally subjected to two optional embodiments of the invention: treatment with or without the use of a pigment. In order to obtain the final product that can be used in the production of blocks, floors and other products of various sizes, an agglomerating agent combined with TiOis added to the micronized sandstone comprising the bio-additive TiO, either in an aqueous solution or as a dry product, optionally including colored oxides. 1. Method of manufacturing micronized sandstone obtained from ceramics or industrial waste of ceramics manufacturing containing TiObio-additive , characterized by comprising the steps of:{'b': 1', '2', '3, 'a. grinding the ceramics or ceramic waste in several mills/grinders (, , ),'}{'b': '4', 'b. obtaining the micronized sandstone () by passing the grinded ceramic material into a micronizer,'}{'b': 5', '4, 'c. adding pigments or colored oxides () to the micronized powder thereof (),'}{'b': 5', '5, 'sub': '2', 'i': 'b', 'd. processing the micronized colored powder () with a hydrolyzed solution of TiO(),'}{'b': 1', '1, 'sub': '2', 'e. drying (S) the micronized colored sandstone comprising TiOadditive (P)'}{'b': '1', 'sub': '2', 'f. mixing the obtained product (P) with an ...

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Номер записи: 23
01-01-2015 дата публикации

Processes for the Preparation of Silicon Containing Intermetallic Compounds and Intermetallic Compounds Prepared Thereby

Номер: US20150005156A1
Автор: Aswini DASH, Dimitris Katsoulis
Принадлежит: Dow Corning Corp

Intermetallic compounds, such as metal silicides, e.g., PdSi and/or Pd 2 Si, can be selectively prepared in a two step process including the steps of (1) vacuum impregnating silicon with a metal halide, and (2) ball milling the product of step (1).

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Номер записи: 24
16-01-2020 дата публикации

CATALYST AND CATALYST GROUP

Номер: US20200016577A1
Автор: NAKAMURA Takuya, TANIGUCHI Takanori, TAZAWA Kazuharu
Принадлежит: MITSUBISHI CHEMICAL CORPORATION

An object of the present invention is to provide a catalyst ensuring that when a gas-phase catalytic oxidation reaction of a material substance is conducted using a catalyst to produce a target substance, the pressure loss and coking are suppressed and the target substance can be produced in high yield. The present invention is related to a ring-shaped catalyst having a straight body part and a hollow body part, which is used when a gas-phase catalytic oxidation reaction of a material substance is conducted to produce a target substance, wherein a length of the straight body part is shorter than a length of the hollow body part and at least at one end part, a region from an end part of the straight body part to an end part of the hollow body part is concavely curved. 1. A ring-shaped catalyst having a straight body part and a hollow body part , which is used when a gas-phase catalytic oxidation reaction of an olefin or a tertiary butanol is conducted to produce a corresponding unsaturated aldehyde and/or unsaturated carboxylic acid , wherein:a length of the straight body part is shorter than a length of the hollow body part and at least at one end part, a region from an end part of the straight body part to an end part of the hollow body part is concavely curved.2. A ring-shaped catalyst having a straight body part and a hollow body part , which is used when gas-phase catalytic oxidation of an unsaturated aldehyde is conducted to produce a corresponding unsaturated carboxylic of an unsaturated aldehyde acid , wherein:a length of the straight body part is shorter than a length of the hollow body part and at least at one end part, a region from an end part of the straight body part to an end part of the hollow body part is concavely curved.3. The catalyst according to claim 1 , wherein the straight body part is present between a surface including one end part of the hollow body part and a surface including another end part of the hollow body part.4. The catalyst ...

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Номер записи: 25
16-01-2020 дата публикации

CATALYSTS FOR NATURAL GAS PROCESSES

Номер: US20200016580A1
Автор: Cizeron Joel M., Freer Erik M., Gamoras Joel, HONG Jin Ki, Maurer Sam, Rosenberg Daniel, Rumplecker Anja, Schammel Wayne P., Scher Erik C., Zurcher Fabio R.
Принадлежит:

Catalysts, catalytic forms and formulations, and catalytic methods are provided. The catalysts and 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. 138-. (canceled)39. A catalytic material comprising:(a) an OCM active catalyst; and {'br': None, 'sub': a', 'b', 'x', 'y, 'Ln1Ln2O(OH)'}, '(b) a second catalyst comprising the following formulawherein:Ln1 and Ln2 are each independently different lanthanide elements;O is oxygen;OH is hydroxy;a is a number greater than 0; andb, x and y are each independently numbers of 0 or greater, provided that at least one of x or y is greater than 0, andwherein the catalytic material comprises a methane conversion of greater than 20% and a C2 selectivity of greater than 50% when the catalytic material is employed as a heterogeneous catalyst in the oxidative coupling of methane at a temperatures ranging from about 550° C. to about 750° C.40. The catalytic material of claim 39 , wherein b and x are each independently numbers greater than 0 claim 39 , and y is 0.41. The catalytic material of claim 39 , wherein the OCM active catalyst is a bulk catalyst and the second catalyst is a nanostructured catalyst.42. The catalytic material of claim 39 , wherein the OCM active catalyst is a nanostructured catalyst.43. The catalytic material of claim 42 , wherein the OCM active catalyst is a nanowire catalyst.44. The catalytic material of claim 39 , wherein the second catalyst comprises a nanostructured catalyst comprising a lanthanum/neodymium oxide claim 39 , a lanthanum/cerium oxide claim 39 , a neodymium/cerium oxide claim 39 , a lanthanum/samarium oxide claim 39 , a neodymium/samarium oxide claim 39 , a europium/neodymium oxide claim 39 , a lanthanum/erbium oxide claim 39 , a neodymium/erbium oxide claim 39 , or a europium/lanthanum oxide.45. The catalytic material of claim 39 , wherein the ...

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Номер записи: 26
16-01-2020 дата публикации

MIXED OXIDE CATALYST FOR THE OXIDATIVE COUPLING OF METHANE

Номер: US20200017424A1
Автор: LENGYEL Istvan, Liang Wugeng, MAMEDOV Aghaddin, PEREZ Hector, SARSANI Sagar, WEST David
Принадлежит: SABIC Global Technologies, B.V.

A mixed oxide catalyst for the oxidative coupling of methane can include a catalyst with the formula ABCDO, wherein: element A is selected from alkaline earth metals; elements B and C are selected from rare earth metals, and wherein elements B and C are different rare earth metals; the oxide of at least one of A, B, C, and D has basic properties; the oxide of at least one of A, B, C, and D has redox properties; and elements A, B, C, and D are selected to create a synergistic effect whereby the catalytic material provides a methane conversion of greater than or equal to 15% and a C selectivity of greater than or equal to 70%. Systems and methods can include contacting the catalyst with methane and oxygen and purifying or collecting C products. 1. A catalytic material for oxidative coupling of methane comprising:{'sub': a', 'b', 'c', 'd', 'x, 'claim-text': element A is selected from alkaline earth metals;', 'elements B and C are selected from rare earth metals, and wherein elements B and C are different rare earth metals;', 'the oxide of at least one of A, B, C, and D has basic properties;', 'the oxide of at least one of A, B, C, and D has redox properties; and', {'sub': '2', 'sup': '−', 'elements A, B, C, and D are selected to create a synergistic effect whereby the catalytic material provides a methane conversion of greater than or equal to 15% and a C selectivity of greater than or equal to 70%.'}], 'a catalyst with the formula ABCDO, wherein2. The catalytic material according to claim 1 , wherein: =1.0; claim 1 , claim 1 , and are each in the range from about 0.01 to about 10; and is a number selected to balance the oxidation state of D.3. The catalytic material according to claim 1 , wherein element A is selected from the group consisting of magnesium claim 1 , calcium claim 1 , strontium claim 1 , and barium.4. The catalytic material according to claim 1 , wherein elements B and C are selected from the group consisting of cerium claim 1 , ytterbium claim 1 , ...

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Номер записи: 27
28-01-2016 дата публикации

Pseudo-brookite Compositions as Active Zero-PGM Catalysts for Diesel Oxidation Applications

Номер: US20160023188A1
Автор: Golden Stephen J., Nazarpoor Zahra
Принадлежит: Clean Diesel Technologies, Inc.

YMnOpseudo-brookite compositions with improved thermal stability and catalytic activity as Zero-PGM (ZPGM) catalyst systems for DOC application are disclosed. Testing of YMnOpseudo-brookite catalysts and YMnOperovskite catalysts, including variations of calcination temperatures, are performed under DOC light-off (LO) tests at wide range of space velocity to evaluate catalytic performance, especially level of NO oxidation. The presence of YMnOpseudo-brookite oxides in disclosed ZPGM catalyst compositions is analyzed by x-ray diffraction (XRD) analysis. XRD analyses and LO tests confirm that YMnOpseudo-brookite catalysts exhibit higher catalytic activity and significant improved thermal stability when compared to conventional YMnOperovskite catalysts. 1. A catalyst composition comprising a pseudo-brookite structured compound of general formula ABO , wherein A is a cation selected from the group consisting of silver (Ag) , manganese (Mn) , yttrium (Y) , lanthanum (La) , cerium (Ce) , iron (Fe) , praseodymium (Pr) , neodymium (Nd) , strontium (Sr) , cadmium (Cd) , cobalt (Co) , scandium (Sc) , copper (Cu) , niobium (Nb) , and tungsten (W) , and wherein B is a cation selected from the group consisting of Ag , Mn , Y , La , Ce , Fe , Pr , Nd , Sr , Cd , Co , Sc , Cu , Nb , and W.2. The catalyst composition of claim 1 , wherein A is Y.3. The catalyst composition of claim 2 , wherein B is Mn.4. The catalyst composition of claim 1 , further comprising at least one support oxide selected from the group consisting of ZrO claim 1 , doped ZrO claim 1 , AlO claim 1 , doped AlO claim 1 , SiO claim 1 , TiO claim 1 , and NbO.5. The catalyst composition of claim 4 , wherein the at least one support oxide includes Pr doped ZrOof formula ZrO—PrO.6. The catalyst composition of claim 5 , wherein the Pr doped ZrOcomprises about 10% by weight PrO.7. The catalyst composition of claim 3 , further comprising at least one support oxide selected from the group consisting of ZrO claim 3 , doped ...

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Номер записи: 28
28-01-2016 дата публикации

METHANOL STEAM REFORMING CATALYSTS

Номер: US20160023193A1
Автор: Castellano Christopher R., Farrauto Robert J., Zhang Qinglin
Принадлежит:

Novel catalysts, substantially free of Cu and Zn, useful for the reformation of methanol and steam into Hfor use in hydrogen fuel cells and their use are described herein. 120-. (canceled)21. A method of making a catalyst for reforming methanol and steam into hydrogen gas for use in hydrogen fuel cells , the method comprising: a complex or salt of a first metal,', 'a complex or salt of a second element capable of forming an alloy with the first metal, and', 'a complex or salt of at least one promoter element;, '(a) forming a first aqueous solution comprising(b) forming a second aqueous solution comprising sodium carbonate;(c) adding a solid support to the second aqueous solution to form a slurry;(d) mixing the first aqueous solution with the slurry to form a second slurry;(e) milling the second slurry;(f) drying the second slurry to form a pre-catalyst; and(g) calcining the pre-catalyst to form a catalyst.22. The method of claim 21 , wherein the first metal is selected from the group consisting of Pt and Pd.23. The method of claim 21 , wherein the second element capable of forming an alloy with the first metal is Ga.24. The method of claim 23 , wherein the at least one promoter element is Zr.25. The method of claim 24 , wherein the first aqueous solution further comprises a complex or salt of a second promoter element claim 24 , and wherein the second promoter element is Y.26. The method of claim 25 , wherein the first aqueous solution further comprises a complex or salt of a third promoter element claim 25 , and wherein the third promoter element is Ba.27. The method of claim 24 , wherein the first aqueous solution further comprises a complex or salt of a second promoter element claim 24 , and wherein second promoter element is Ba.28. The method of claim 27 , wherein the first aqueous solution further comprises a complex or salt of a third promoter element claim 27 , and wherein the third promoter element is Fe.29. The method of claim 21 , wherein the solid support ...

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Номер записи: 29
25-01-2018 дата публикации

CONTROLLED PRESSURE HYDROTHERMAL TREATMENT OF ODH CATALYST

Номер: US20180021760A1
Автор: Barnes Marie Annette, Drag Hanna, Gao Xiaoliang, Simanzhenkov Vasily, Sullivan David Jeffrey
Принадлежит: NOVA CHEMICALS (INTERNATIONAL) S.A.

The preparation of an oxidative dehydrogenation catalyst comprising Mo, V, Nb and Te using a hydrothermal step the activity and reproducibility of the catalyst is improved by conduction the hydrothermal step at higher pressures while permitting gaseous products to leave the reactor. In some instances a condenser may be upstream of the pressure relief valve. 1. A process for synthesis of a catalyst for oxidative dehydrogenation of paraffins via a hydrothermal treatment comprising:i) preparing an aqueous slurry comprising Mo, V, Nb and Te salts in a molar ratio of metal elements 1:0.3 to 3; 0.05 to 0.25; and 0.08 to 0.2 at a temperature from 25° C. to 80° C.;ii) heating slurry in a reactor to a temperature from 80° to 220° C. at a pressure equal or above the saturated water vapor pressure at the corresponding reaction temperature, for a period of time not less than 1 hour with agitation and simultaneous removal of gaseous byproduct species produced during the reaction.iii) letting the reactor cool and depressurizing the reactor and recovering the catalyst as a solid.2. The process according to claim 1 , wherein the temperature of the reactor is from 150° C.-185° C.3. The process according to claim 2 , wherein the pressure in the reactor is from 10 psi to 190 psi (960 kPa to 1300 kPa).4. The process according to claim 1 , wherein there is a condenser upstream of a pressure control device.5. The process according to 4 claim 1 , wherein the condenser is operated at a temperature above 0° C. and below reaction temperature.6. The process according to claim 1 , wherein the gaseous species are removed by being vented from the reactor through the pressure control device.71. The process according claim 1 , wherein the gaseous species are removed from the reactor using one or more methods selected from gas absorption claim 1 , gas adsorption claim 1 , membrane separation claim 1 , and chemicals transformation.8. The process according to wherein the time of hydrothermal ...

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Номер записи: 30
25-01-2018 дата публикации

Suspended-Bed Hydrogenation Catalyst and Regeneration Method Therefor

Номер: US20180021761A1
Автор: Li Chuntao, Li Lin, LIN Ke
Принадлежит: Beijing Huashi United Energy Technology and Development Co., Ltd.

A suspended-bed hydrogenation catalyst and a regeneration method are disclosed. A composite support comprises a semi-coke pore-expanding material, a molecular sieve and a spent catalytic cracking catalyst. The hydrogenation catalyst for heavy oil is obtained through mixing the semi-coke pore-expanding material, the molecular sieve and the spent catalytic cracking catalyst, followed by molding, calcining and activating, and then loading an active metal oxide to the composite support. According to the composite support, a macropore, mesopore and micropore uniformly-distributed structure is formed, so that full contact between all ingredients in the heavy oil and active ingredients in a hydrogenation process is facilitated, and the conversion ratio of the heavy oil is increased. The hydrogenation catalyst integrates adsorption, cracking and hydrogenation properties. According to a regeneration method, the loading performance of an active-metal-loaded support in a spent hydrogenation catalyst cannot be destroyed. 1. A catalyst composite support , comprisinga semi-coke pore-expanding material,a molecular sieve anda spent catalytic cracking catalyst,wherein the mass ratio of the semi-coke pore-expanding material to the molecular sieve to the spent catalytic cracking catalyst is (1 to 5): (2 to 4): (0.5 to 5);{'sup': 2', '2, 'the semi-coke pore-expanding material has a specific surface area of 150 m/g to 300 m/g and an average pore size of 70 nm to 80 nm;'}{'sup': 2', '2, 'the molecular sieve has a specific surface area of 200 m/g to 300 m/g and an average pore size of 5 nm to 10 nm; and'}{'sup': 2', '2, 'the spent catalytic cracking catalyst has a specific surface area of 50 m/g to 300 m/g and an average pore size of 3 nm to 7 nm.'}2. The composite support according to claim 1 , wherein the semi-coke pore-expanding material has an average particle size of 60 to 100 microns and an average pore volume of 2 cm/g to 3 cm/g.3. The composite support according to claim 1 , ...

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Номер записи: 31
25-01-2018 дата публикации

HETEROGENEOUS METAL-FREE CATALYST

Номер: US20180022679A1
Автор: Blair Richard G.
Принадлежит:

The inventive concepts disclosed and/or claimed herein relate generally to catalysts and, more particularly, but not by way of limitation, to a heterogeneous, metal-free hydrogenation catalyst containing frustrated Lewis pairs. In one non-limiting embodiment, the heterogeneous, metal-free catalyst comprises hexagonal boron nitride (h-BN) having frustrated Lewis pairs therein. 1. A heterogeneous hydrogenation catalyst , comprising:a solid surface substantially free of metals, the solid surface having at least one Lewis acid site and at least one Lewis base site; andat least one defect frustrating at least one pair of Lewis acid and Lewis base site sites, wherein the at least one frustrated pair of Lewis acid and Lewis base sites is catalytically active.2. A heterogeneous hydrogenation catalyst , comprising:a solid surface having non-metallic Lewis acid moieties and non-metallic Lewis base moieties spaced a distance apart from one another such that (a) catalytic activity is present therebetween and (b) the formation of an acid-base adduct is prevented.3. The heterogeneous hydrogenation catalyst of claim 2 , wherein the Lewis acid moieties are selected from the group consisting of Group 13 elements in a trigonal planar configuration claim 2 , halides of Group 15 elements claim 2 , electron poor π-systems claim 2 , and combinations thereof.4. The heterogeneous hydrogenation catalyst of claim 2 , wherein the Lewis base moieties are selected from the group consisting of simple anions claim 2 , lone-pair-containing species claim 2 , complex anions claim 2 , electron rich π-systems claim 2 , and combinations thereof.5. The heterogeneous hydrogenation catalyst of claim 2 , wherein the Lewis acid moieties are selected from the group consisting of Group 13 elements in a trigonal planar configuration claim 2 , halides of Group 15 elements claim 2 , electron poor π-systems claim 2 , and combinations thereof claim 2 , and the Lewis base moieties are selected from the group ...

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Номер записи: 32
29-01-2015 дата публикации

Process For Production Of Acrylic Acid Or Its Derivatives From Hydroxypropionic Acid Or Its Derivatives

Номер: US20150031913A1
Автор: Dimitris Ioannis Collias, Jane Ellen Godlewski, Janette Villalobos, Juan Estaban Velasquez
Принадлежит: Procter and Gamble Co

Processes for the catalytic dehydration of hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures thereof to acrylic acid, acrylic acid derivatives, or mixtures thereof with high yield and selectivity and without significant conversion to undesired side products, such as, acetaldehyde, propanoic acid, and acetic acid, are provided.

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Номер записи: 33
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%.

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Номер записи: 34
04-02-2021 дата публикации

A FAST BATCH PROCESS FOR PREPARING A ZEOLITIC MATERIAL HAVING FRAMEWORK TYPE CHA

Номер: US20210031175A1
Автор: CHAIKITTISILP Watcharop, Iyoki Kenta, Mueller Ulrich, Parvulescu Andrei-Nicolae, WAKIHARA Torn
Принадлежит:

A batch process for preparing a zeolitic material having framework type CHA and a framework structure comprising Si, Al, O, and H, comprising (i) providing a seeding material comprising a zeolitic material having framework type CHA and a framework structure comprising Si, Al, O, and H; (ii) preparing a mixture comprising a source of Si, a source of Al, a seeding material provided in (i), a CHA framework structure directing agent comprising a cycloalkylammonium compound, and water, wherein the cycloalkylammonium compound is a compound comprising a cation RRRRN wherein R, R, Rare, independently from one another, an alkyl residue having from 1 to 6 carbon atoms, and Ris a 5- to 8-membered cycloalkyl residue, wherein in mixture, the molar ratio of water relative to Si comprised in the source of Si and in the seeding material, calculated as SiO, is in the range of from 5:1 to 15:1, wherein the mixture, the molar ratio of sodium, calculated as NaO, relative to Si comprised in the source of Si and in the seeding material, calculated as SiO, is in the range of from 0:1 to 0.1:1; (iii) heating the mixture prepared in (ii) in its liquid state to a temperature of the mixture in the range of from 50 to 90° C. and keeping the liquid mixture at a temperature in this range for 5 to 100 h; (iv) heating the heated mixture of (iii) to a temperature of the mixture in the range of from 190 to 230° C. in a crystallization vessel and keeping the mixture at a temperature in this range under autogenous pressure in the crystallization vessel for 0.5 to 10 h, obtaining a solid material comprising a zeolitic material having framework type CHA and a framework structure comprising Si, Al, O, and H, suspended in its mother liquor. 1. A process for preparing a zeolitic material having a framework type CHA and a framework structure comprising Si , Al , O , and H , the process comprising:providing a seeding material comprising a zeolitic material having a framework type CHA and a framework ...

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Номер записи: 35
08-02-2018 дата публикации

PLATINUM-CONTAINING CATALYSTS FOR COMBUSTION ENGINES

Номер: US20180036716A1
Автор: Roth Stanley A., Wei Xinyi, Zhu Haiyang
Принадлежит: BASF CORPORATION

Emissions treatment systems of combustion engines are provided, which comprise a platinum-containing catalyst that is degreened during production, which is before exposure to operating conditions of a vehicle having a diesel engine. The platinum-containing catalyst, in the form of a platinum component on a high surface area refractory metal oxide support, exhibits a vibration frequency of about 2085 to about 2105 cm−1 as measured by CO-DRIFTS. Such catalytic material is essentially-free of platinum oxide species found at greater than about 2110 cm−1 as measured by CO-DRIFTS. Such catalysts can provide excellent and consistent conversion of nitrogen oxide (NO) to nitrogen dioxide (NO2). 1. A diesel oxidation catalyst composite comprising: a diesel oxidation catalytic material on a carrier , the catalytic material comprising a platinum component on a high surface area refractory metal oxide support ,{'sup': '−1', 'wherein the catalytic material exhibits a peak vibration frequency in the range of about 2085 to about 2105 cmas measured by CO-DRIFTS prior to exposure to operating conditions of a vehicle having a diesel engine.'}2. The diesel oxidation catalyst composite of claim 1 , wherein the catalytic material is essentially-free of platinum oxide species found at >about 2110 cmas measured by CO-DRIFTS.3. The diesel oxidation catalyst composite of claim 1 , wherein the catalyst composite is fully degreened during production of the catalyst material.4. The diesel oxidation catalyst composite of claim 1 , wherein upon exposure to continuous operation of a vehicle having a diesel engine in a range of about 200° C. to about 350° C. claim 1 , the catalytic material continues to exhibit a peak vibration frequency of about 2085 to about 2105 cmas measured by CO-DRIFTS.5. The diesel oxidation catalyst composite of claim 1 , wherein the platinum component is in particle form and has an average particle size in the range of about 0.5 nm to about 6 nm as measured by a CO- ...

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Номер записи: 36
18-02-2021 дата публикации

CATALYST FOR WATER SPLITTING REACTIONS

Номер: US20210046453A1
Автор: Hona Ram K., Karki Surendra B., Ramezanipour Farshid
Принадлежит:

A perovskite-type oxide catalyst for water-splitting reactions is provided. The catalyst, CaSrFeCoMnOwhere y=0.10-1.90 and x=0.05-0.95, has catalytic activity for both hydrogen- and oxygen-evolution reactions. An exemplary catalyst is CaSrFeCoMnO. 1. A catalytic material with formula: CaSrFeCoMnOwhere y=0.10-1.90 and x=0.05-0.95.2. The catalytic material of claim 1 , wherein the formula is CaSrFeCoMnO.3. A catalyst ink comprising the catalytic material of and a liquid carrier.4. An electrode comprising CaSrFeCoMnOwhere y=0.10-1.90 and x=0.05-0.95.5. The electrode of wherein the electrode does not comprise carbon.6. A method of making the catalytic material CaSrFeCoMnOwhere y=0.10-1.90 and x=0.05-0.95 claim 4 , comprisinggrinding stoichiometric proportions of a solid compound comprising Ca, a solid compound comprising Sr, a solid compound comprising Fe, a solid compound comprising Mn and a solid compound comprising Co to form a ground mixture; i) sintering the compressed mixture to form a sintered compressed mixture and', 'ii) cooling the sintered compressed mixture; or', 'iii) grinding the compressed mixture to form a powder,', 'iv) recompressing and calcining the compressed mixture,', 'v) sintering the compressed mixture, and', 'vi) cooling the sintered compressed mixture., 'compressing the ground mixture to form a compressed mixture; and'}7. The method of claim 6 , wherein the step of calcining is performed in air at 1000° C. for 24 hours claim 6 , and wherein steps i) and v) of sintering are performed in air at 1200° C. for 24 hours.8. The method of claim 6 , wherein the solid compound comprising Ca is CaCO claim 6 , CaO claim 6 , or Ca(NO); the solid compound comprising Sr is SrCO claim 6 , SrO claim 6 , Sr(NO); the solid compound comprising Fe is FeO claim 6 , FeO claim 6 , FeO; the solid compound comprising Mn is MnO claim 6 , MnO claim 6 , MnO; and the solid compound comprising Co is CoO claim 6 , CoO.9. A method of making a catalytic electrode using an ...

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Номер записи: 37
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 ...

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Номер записи: 38
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 ...

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Номер записи: 39
18-02-2021 дата публикации

ACID/METAL BIFUNCTIONAL CATALYSTS PRODUCED BY SLURRY METHODS

Номер: US20210046462A1
Автор: Bai Chuansheng, Cunningham Majosefina, Daaka Jihad M., Kamakoti Preeti, Kovvali Anjaneya S., Lee Anita S., Ramkrishnan Aruna
Принадлежит:

A method of producing a acid/metal bifunctional catalyst may include: mixing an acid catalyst, a metal catalyst, and a fluid to produce a slurry, wherein the acid catalyst is present at 50 wt % or less relative to a total catalyst weight in the slurry; heating the slurry; producing a powder from the slurry; and calcining the powder to produce the acid/metal bifunctional catalyst. Such acid/metal bifunctional catalyst would be useful in the direct conversion of syngas to dimethyl ether as well as other reactions. 1. A method comprising:mixing an acid catalyst, a metal catalyst, and a fluid to produce a slurry, wherein the acid catalyst is present at 50 wt % or less relative to a total catalyst weight in the slurry;heating the slurry;drying the slurry produce a dried slurry;producing a powder from the dried slurry; andcalcining the powder to produce an acid/metal bifunctional catalyst.2. The method claim 1 , wherein producing the powder from the dried slurry comprises:grinding the dried slurry to produce a powder, wherein the powder comprises 5 wt % or less of the fluid.3. The method of claim 1 , wherein mixing is maintained during heating.4. The method of claim 1 , wherein mixing is performed for 30 minutes to 3 hours.5. The method of claim 1 , wherein heating is to a temperature within 20° C. of a boiling point of the fluid.6. 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 thereof.7. The method of claim 1 , wherein the metal catalyst is a M1/M2/Al 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 ...

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Номер записи: 40
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 , ...

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Номер записи: 41
18-02-2021 дата публикации

Process for Production of Attrition Stable Granulated Material

Номер: US20210046468A1
Автор: Friedrich Marco, Schrage Christian
Принадлежит:

The present invention relates to granulated particles with improved attrition and a method for producing granulated particles by fluidized bed granulation of inorganic particles wherein particles of reduced particle size are fed into a fluldized-bed granulation reactor thereby producing granulated particles with improved attrition. 1. A method of producing granulated particles in a fluidized-bed granulation reactor , the method comprising feeding inorganic particles dispersed in a dispersion medium into the fluidized-bed granulation reactor , the inorganic particles in the dispersion medium having a Dvalue of between 1 μm and 15 μm.2. The method of wherein the dispersion medium comprising inorganic particles dispersed therein is sprayed into a process chamber of the fluidized-bed granulation reactor while heated process gas flows through the process chamber from the bottom to the top.3. The method of claim 1 , wherein the Dvalue of the inorganic particles in the dispersion medium fed into the fluidized-bed granulation reactor is between 1 μm and 10 μm.4. The method of claim 1 , wherein the inorganic particles include compounds of alkaline earth metals claim 1 , rare earth elements claim 1 , platinum group elements claim 1 , iron group elements claim 1 , Cu claim 1 , Ag claim 1 , Au claim 1 , Zn claim 1 , Al claim 1 , In claim 1 , Sn claim 1 , Si claim 1 , P claim 1 , V claim 1 , Nb claim 1 , Mo claim 1 , W claim 1 , Mn claim 1 , Re claim 1 , Ti claim 1 , Zr or mixtures thereof.5. The method of claim 1 , wherein the inorganic particles are particles of alumina claim 1 , silica claim 1 , or a mixture thereof.6. The method of claim 1 , wherein the dispersion medium comprises water or consists of water.7. The method of claim 1 , wherein a stabilizer is added to the dispersion medium.8. The method of claim 1 , including the initial step of milling the inorganic particles in the dispersion medium to a Dvalue between 1 μm and 15 μm before entering into the fluidized-bed ...

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Номер записи: 42
15-02-2018 дата публикации

USE OF NICKEL-MANGANESE OLIVINE AND NICKEL-MANGANESE SPINEL AS BULK METAL CATALYSTS FOR CARBON DIOXIDE REFORMING OF METHANE

Номер: US20180043340A1
Автор: "DSouza Lawrence", Ravon Ugo, Viswanath Vinu
Принадлежит:

Disclosed are bulk metal oxide catalysts, and methods for their use, that include at 5 least two or more metals or two or more compounds thereof (M, M) and having an olivine crystal phase or a spinel crystal phase, or both phases, wherein the bulk metal oxide catalyst is capable of producing the Hand CO from the CHand the COunder substantially dry conditions. 1. A bulk metal oxide catalyst capable of producing hydrogen (H) and carbon monoxide (CO) from methane (CH) and carbon dioxide (CO) , the bulk metal oxide catalyst comprising at least two or more metals or two or more compounds thereof (M , M) and having an olivine crystal phase , wherein the bulk metal oxide catalyst is capable of producing the Hand CO from the CHand the COunder substantially dry conditions.2. The bulk metal oxide of claim 1 , wherein Mcomprises nickel (Ni) or a compound thereof claim 1 , and Mcomprises manganese (Mn) or a compound thereof.3. The bulk metal oxide catalyst of claim 2 , wherein the olivine crystal phase comprises a nickel-manganese olivine crystal phase having a structure of (NiMn)SiO claim 2 , where x is 0 Подробнее

Номер записи: 43
03-03-2022 дата публикации

Catalyst and Method for Preparation of 2-Ethoxyphenol by Catalytic Depolymerization of Lignin

Номер: US20220062872A1
Автор: Chen Mingqiang, Shi Jingjing, Tang Zhiyuan, Wang Jun, Wang Yishuang, Yang Zhonglian, Zhang Han
Принадлежит: Anhui University of Science & Technology

The present disclosure discloses a catalyst and a method for preparing 2-ethoxyphenol by catalytic depolymerization of lignin. The catalyst comprises sepiolite as a carrier and tungsten, nickel and molybdenum as active components supported on sepiolite. The catalyst for preparing 2-ethoxyphenol by catalytic depolymerization of lignin in the present disclosure can catalytically depolymerize lignin, realize the directional preparation of 2-ethoxyphenol from lignin, and co-produce lignin oil. It has a comparatively high selectivity for 2-ethoxyphenol and can achieve a lignin conversion rate of more than 95%, a 2-ethoxyphenol selectivity of more than 20% in a liquid product, and a yield of more than 100 mg/g of lignin.

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Номер записи: 44
03-03-2022 дата публикации

Preparation method of caprolactam

Номер: US20220064124A1
Автор: Fei Shen, Han Wang, Shibiao Cheng, Songlin Wang, Xi Li, Xinping Zhang, Zhaobin JIANG, Zhimin Hu
Принадлежит: Zhejiang Henglan Science & Technology Co Ltd

The present disclosure discloses a method for preparing caprolactam including: (1) contacting cyclohexanone oxime with a catalyst to carry out reaction in the presence of ethanol and under the condition of gas phase Beckmann rearrangement reaction of cyclohexanone oxime; (2) separating the reaction product obtained in step (1) to produce an ethanol solution of crude caprolactam, and then separating the ethanol solution of crude caprolactam to obtain ethanol and crude caprolactam; (3) removing impurities with boiling points lower than that of caprolactam in the crude caprolactam to obtain a light component removal product; (4) mixing the light component removal product with a crystallization solvent to carry out crystallization and solid-liquid separation to obtain a crystalline crystal; (5) subjecting the crystalline crystal to a hydrogenation reaction; wherein the crystallization solvent contains 0.1-2 wt % of ethanol.

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Номер записи: 45
14-02-2019 дата публикации

PROCESS FOR PREPARATION OF A SUPPORTED COBALT-CONTAINING FISHCER-TROPSCH SYNTHESIS

Номер: US20190046960A1
Автор: FERGUSON Ewen, PATERSON Alexander
Принадлежит:

The present invention relates to a process for preparing a cobalt-containing Fischer-Tropsch synthesis catalyst with good physical properties and high cobalt loading. In one aspect, the present invention provides a process for preparing a supported cobalt-containing Fischer-Tropsch synthesis catalyst, said process comprising the following steps of: (a) impregnating a support powder or granulate with a cobalt-containing compound; (b) calcining the impregnated support powder or granulate and extruding to form an extrudate; or extruding the impregnated support powder or granulate to form an extrudate and calcining the extrudate; and (c) impregnating the calcined product with a cobalt-containing compound; or forming a powder or granulate of the calcined product, impregnating with a cobalt-containing compound and extruding to form an extrudate. 125-. (canceled)26. A process for preparing a supported cobalt-containing Fischer-Tropsch synthesis catalyst , said process comprising the following steps of:(a) impregnating a support powder or granulate with a cobalt-containing compound;(b) calcining the impregnated support powder or granulate and extruding to form an extrudate;orextruding the impregnated support powder or granulate to form an extrudate and calcining the extrudate; and(c) impregnating the calcined product with a cobalt-containing compound; orforming a powder or granulate of the calcined product, impregnating with a cobalt-containing compound and extruding to form an extrudate.27. A process according to claim 26 , wherein after step (b) and prior to step (c) claim 26 , the process further comprises at least one cycle of the intervening steps of:(i) impregnating the calcined product with a cobalt-containing compound;orforming a powder or granulate of the calcined product, impregnating with a cobalt-containing compound and extruding to form an extrudate; and(i) calcining the product.28. A process according claim 26 , wherein the process includes at least one step ...

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Номер записи: 46
10-03-2022 дата публикации

NOx ADSORBER CATALYST

Номер: US20220072514A1
Автор: CHANDLER GUY RICHARD, PHILLIPS PAUL RICHARD, RADCLIFFE Jonathan, REID STUART DAVID
Принадлежит:

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

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Номер записи: 47
04-03-2021 дата публикации

Method for preparing molecular sieve SCR catalyst, and catalyst prepared therethrough

Номер: US20210060539A1
Автор: CHEN Qizhang, CHEN YAOQIANG, FENG XI, Li Yun, LIU ZHIMIN, WANG GANXUE, Wang Ruifang, WEI KUAN, Wen Jie, ZENG DONG, Zhang Yanhua
Принадлежит:

A method for preparing a molecular sieve SCR (selective catalytic reduction) catalyst and a prepared catalyst therethrough. In the method, several molecular sieves are mixed and modified by transition metal or rare-earth metal via ion exchange, then loaded Fe by equivalent-volume impregnation, and loaded Cu by one or more liquid ion exchange. This present invention, combined with several techniques, such as modification of stable molecular sieve by transition and rare-earth metal, Fe loading by equivalent-volume impregnation and Cu loading by one or more liquid ion exchange, and after through stable and effective modification and loading control, the obtained catalyst material is coated on a carrier substrate via size mixing and coating process to be prepared into an integral catalyst. 1. A method for preparing a molecular sieve SCR catalyst , wherein comprising the following steps of:(1) molecular sieve mixing: firstly adding deionized water to several molecular sieves for size mixing, and performing liquid spray drying, then granulating after uniformly mixing;(2) molecular sieve modification: dissolving soluble transition metal and/or rare-earth metal salt into deionized water, and heating up to 70-90° C., wherein concentration of the solution ranges within 0.01-0.5 mol/L, adding the powdered molecular sieve prepared in the step (1) under stirring condition, performing ion exchange in a 70-90° C. thermostatic reaction kettle for 2-12 h, filtering, washing and drying;(3) active component Fe loading by isometric equivalent-volume impregnation: weighing the powdered molecular sieve obtained in step (2) for further use, firstly testing saturated water absorption of the molecular sieve per unit mass, calculating the total water absorption, dissolving soluble Fe salt into deionized water, stirring and dissolving, wherein total volume of the solution is equal to total water absorption of the molecular sieve; adding the prepared powdered molecular sieve and stirring it on ...

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Номер записи: 48
20-02-2020 дата публикации

EXHAUST GAS PURIFYING FILTER AND PRODUCTION METHOD THEREOF

Номер: US20200055039A1
Автор: Ando Ryuji, Kayada Yuto
Принадлежит: N.E. CHEMCAT CORPORATION

The present invention provides an exhaust gas purifying filter capable of efficiently burning and removing particulates captured by a partition wall, and a production method thereof. This exhaust gas purifying filter (CSF) of the present invention includes at least a honeycomb substrate having a porous partition wall configured to capture particulates (PM) such as soot in exhaust gas, and a catalyst carried by the honeycomb substrate and configured to burn and remove the particulates captured by the partition wall of the honeycomb substrate and deposited within cells, wherein the catalyst is carried concentrically in a shallow portion from the surface of the cell wall on the exhaust gas inflow side of the honeycomb substrate, and 65% or more of the total mass of the catalyst is present in a depth region from the surface of the cell wall of the honeycomb substrate up to 2/10 a with reference to the wall thickness a of the partition wall. 1. An exhaust gas purifying filter , comprising at least a honeycomb substrate having a porous partition wall configured to capture particulates in exhaust gas , and a catalyst carried by the honeycomb substrate and configured to burn and remove the particulates captured by the partition wall of the honeycomb substrate and deposited within cells , whereinthe catalyst is carried concentrically in a shallow portion from the surface of the cell wall on the exhaust gas inflow side of the honeycomb substrate, and 65% or more of the total mass of the catalyst is present in a depth region from the surface of the cell wall of the honeycomb substrate up to 2/10 a with reference to the wall thickness a of the partition wall.2. The exhaust gas purifying filter according to claim 1 , wherein90% or more of the total mass of the catalyst is present in the depth region from the surface of the cell wall of the honeycomb substrate up to 2/10 a with reference to the wall thickness a of the partition wall.3. The exhaust gas purifying filter according ...

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Номер записи: 49
04-03-2021 дата публикации

CATALYST FOR CONVERTING SYNGAS TO MIXED ALCOHOLS

Номер: US20210061738A1
Автор: PLANTEGA Frans L., Stevens Rex R., Tijm Peter J.
Принадлежит:

Higher mixed alcohols are produced from syngas contacting a catalyst in a reactor. The catalyst has a first component of molybdenum or tungsten, a second component of vanadium, a third component of iron, cobalt, nickel or palladium and optionally a fourth component of a promoter. The first component forms alcohols, while the vanadium and the third component stimulates carbon chain growth to produce higher alcohols. 1. A process of establishing a catalyst for producing a mixture of alcohols from a syngas , comprising the steps of:a) providing a catalyst precursor, the catalyst precursor comprising molybdenum, cobalt and vanadium;b) locating the catalyst precursor in an interior of a reactor;c) closing the reactor to the atmosphere;d) providing a hydrogen agent in the reactor interior and pressurizing said reactor interior to 250-5,000 psig and heating the reactor interior and the catalyst precursor;e) passing a sulfiding agent over the catalyst precursor wherein the catalyst precursor forms a sulfided catalyst, the sulfided catalyst comprising molybdenum sulfide, cobalt sulfide and vanadium sulfide;f) passing the syngas over the sulfided catalyst in the reactor, the syngas comprising an amount of hydrogen to carbon monoxide of at least 0.5 hydrogen to 5.0 of carbon monoxide; andg) producing said mixed alcohols.3. The process of establishing a catalyst for producing a mixture of alcohols from a syngas of claim 1 , wherein the alcohol distribution of the mixed alcohols is comprised of 17 to 31 weight (wt) % methanol claim 1 , 39-49 wt % ethanol claim 1 , 19 to 29 wt % propanol claim 1 , 4 to 12 wt % butanol claim 1 , to 5 wt % pentanol claim 1 , the balance being 0 to 10 wt % hexanol claim 1 , heptanal claim 1 , octanol claim 1 , nonanol claim 1 , decanol claim 1 , ethers claim 1 , esters and hydrocarbons. This patent application is a divisional application of U.S. patent application Ser. No. 15/075,809, filed on Mar. 21, 2016, which is a continuation-in-part ...

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Номер записи: 50
28-02-2019 дата публикации

METHOD FOR PREPARING CATALYST

Номер: US20190060884A1
Автор: CHOE Young Hyun, CHOI Byung Yul, KIM Duk Ki, LIM Hyun Sub, PARK Ju Yeon, SHIN Hyun Jong, YOU Hyo Sang
Принадлежит:

The present invention relates to a method for preparing a catalyst and a method for preparing unsaturated carboxylic acid using the catalyst prepared according to the preparation method. According to the method for preparing a catalyst, unsaturated carboxylic acid can be provided from an unsaturated aldehyde with a high conversion rate and selectivity. 1. A method for preparing a catalyst represented by the following Chemical Formula 1 , comprising the steps of:mixing and stirring a metal precursor to prepare a slurry;drying the slurry at 110° C. to 130° C., and grinding, kneading, and conducting first compression molding;drying the first compression molded material at 110° C. to 130° C., and grinding and conducting second compression molding; andfiring the second compression molded material at 300° C. to 500° C., [{'br': None, 'ligand sublimation rate (wt %)=amount of sublimed ligand (kg)/amount of ligand before sublimation (kg)*100;\u2003\u2003[Mathematical Formula 1]'}, {'br': None, 'sub': 12', 'a', 'b', 'c', 'd', 'e', 'f', 'g, 'MoPABCDEO\u2003\u2003[Chemical Formula 1]'}], 'wherein a ligand sublimation rate calculated by the following Mathematical Formula 1 is 0 wt % or morewherein, in Chemical Formula 1,A is one or more elements selected from the group consisting of W, V, Nb, and Cr; B is one or more elements selected from the group consisting of As, B, Sb, Ce, Pd, and Te; C is one or more elements selected from the group consisting of Si, Al, Zr, Rh, Cu, Ti, Ag, and Sn; D is one or more elements selected from the group consisting of Na, K, Li, Rb, Cs, Ta, Ca, Mg, Sr, and Ba; and E is one or more elements selected from the group consisting of Fe, Co, and Ni, anda, b, c, d, e, f, and g represent the atomic ratio of each element, where a is 0.5 to 2, b is 0.01 to 10, c is 0 to 15, d is 0.01 to 20, e is 0.01 to 20, f is 0.01 to 15, and g is a value determined by the oxidation state of each atom.2. The method for preparing a catalyst according to claim 1 , wherein ...

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Номер записи: 51
08-03-2018 дата публикации

DIESEL OXIDATION CATALYST AND EXHAUST SYSTEM

Номер: US20180065084A1
Автор: CHIFFEY ANDREW FRANCIS, GOODWIN John Benjamin, LEELAND James, Moreau François
Принадлежит:

An oxidation catalyst for treating an exhaust gas from a diesel engine and an exhaust system comprising the oxidation catalyst are described. The oxidation catalyst comprises: a first washcoat region for oxidising carbon monoxide (CO) and hydrocarbons (HCs), wherein the first washcoat region comprises a first platinum group metal (PGM) and a first support material; a second washcoat region for oxidising nitric oxide (NO), wherein the second washcoat region comprises platinum (Pt), manganese (Mn) and a second support material; and a substrate having an inlet end and an outlet end; wherein the second washcoat region is arranged to contact the exhaust gas at the outlet end of the substrate and after contact of the exhaust gas with the first washcoat region. 1. An exhaust system for a diesel engine , which comprises an oxidation catalyst for treating an exhaust gas from the diesel engine and an emissions control device , wherein the oxidation catalyst comprises:a first washcoat zone for oxidising carbon monoxide (CO) and hydrocarbons (HCs), wherein the first washcoat region comprises a first platinum group metal (PGM) and a first support material;a second washcoat zone for oxidising nitric oxide (NO), wherein the second washcoat zone comprises platinum (Pt) and manganese (Mn) disposed or supported on a second support material, wherein the second support material comprises a refractory metal oxide; anda substrate, andwherein the second washcoat zone is disposed at an outlet end of the substrate, and the first washcoat zone disposed at an inlet end of the substrate.2. An exhaust system according to claim 1 , wherein the second washcoat zone comprises platinum (Pt) as the only platinum group metal.3. An exhaust system according to claim 1 , wherein the second support material comprises a refractory metal oxide selected from the group consisting of alumina claim 1 , silica claim 1 , titania claim 1 , zirconia claim 1 , ceria and a mixed or composite oxide of two or more ...

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Номер записи: 52
08-03-2018 дата публикации

DIESEL OXIDATION CATALYST AND EXHAUST SYSTEM

Номер: US20180065085A1
Автор: CHIFFEY ANDREW FRANCIS, GOODWIN John Benjamin, LEELAND James, Moreau François
Принадлежит:

An oxidation catalyst for treating an exhaust gas from a diesel engine and an exhaust system comprising the oxidation catalyst are described. The oxidation catalyst comprises: a first washcoat region for oxidising carbon monoxide (CO) and hydrocarbons (HCs), wherein the first washcoat region comprises a first platinum group metal (PGM) and a first support material; a second washcoat region for oxidising nitric oxide (NO), wherein the second washcoat region comprises platinum (Pt), manganese (Mn) and a second support material; and a substrate having an inlet end and an outlet end; wherein the second washcoat region is arranged to contact the exhaust gas at the outlet end of the substrate and after contact of the exhaust gas with the first washcoat region. 1. An oxidation catalyst for treating an exhaust gas from a diesel engine , which comprises:a first washcoat layer for oxidising carbon monoxide (CO) and hydrocarbons (HCs), wherein the first washcoat layer comprises a first platinum group metal (PGM) and a first support material;a second washcoat layer for oxidising nitric oxide (NO), wherein the second washcoat layer comprises platinum (Pt) and manganese (Mn) disposed or supported on a second support material, wherein the second support material comprises a refractory metal oxide; anda substrate having an inlet end and an outlet end, andwherein the second washcoat layer is disposed on the first washcoat layer.2. An oxidation catalyst according to claim 1 , wherein the second washcoat layer comprises platinum (Pt) as the only platinum group metal.3. An oxidation catalyst according to claim 1 , wherein the second support material comprises a refractory metal oxide selected from the group consisting of alumina claim 1 , silica claim 1 , titania claim 1 , zirconia claim 1 , ceria and a mixed or composite oxide of two or more thereof.4. An oxidation catalyst according to claim 3 , wherein the second support material comprises alumina doped with silica.5. An oxidation ...

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Номер записи: 53
15-03-2018 дата публикации

Catalysts For The Dehydration Of Hydroxypropionic Acid And Its Derivatives

Номер: US20180071722A1
Автор: Collias Dimitris Ioannis, Godlewski Jane Ellen, Velásquez Juan Esteban, Wireko Fred Christian
Принадлежит:

Hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures thereof are dehydrated using a catalyst and a method to produce bio-acrylic acid, acrylic acid derivatives, or mixtures thereof. A method to produce the dehydration catalyst is also provided. 1. A dehydration catalyst consisting essentially of one or more amorphous phosphate salts; wherein said one or more amorphous phosphate salts consist essentially of one or more monovalent cations , and one or more phosphate anions selected from the group represented by empirical formula (I):{'br': None, 'sub': 2(1-x)', '(4-x), 'sup': '−', '[HPO]\u2003\u2003(I);'}wherein x is any real number equal to or greater than 0 and equal to or less than 1; and wherein said one or more amorphous phosphate salts of said dehydration catalyst are neutrally charged.2. The dehydration catalyst of claim 1 , wherein said one or more monovalent cations are selected from the group consisting of Na claim 1 , K claim 1 , Rb claim 1 , Cs claim 1 , and mixtures thereof.3. The dehydration catalyst of claim 2 , wherein said one or more amorphous phosphate salts is KHPO; and wherein x is any real number equal to or greater than 0 and equal to or less than 1.4. The dehydration catalyst of claim 1 , wherein said one or more amorphous phosphate salts are selected from the group represented by empirical formula (Ib):{'br': None, 'sub': w', '(1-w)', '2(1-x)', '(4-x), 'sup': I', 'I, 'MNHPO\u2003\u2003(Ib);'}{'sup': I', 'I, 'wherein Mand Nare two different monovalent cations; wherein x is any real number equal to or greater than 0 and equal to or less than 1; and wherein w is any real number greater than 0 and less than 1.'}5. The dehydration catalyst of claim 1 , further comprising amorphous silicon oxide (SiO); wherein said amorphous silicon oxide is substantially chemically inert to said one or more amorphous phosphate salts.6. The dehydration catalyst of claim 5 , wherein said one or more monovalent cations are selected from the group ...

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Номер записи: 54
24-03-2022 дата публикации

REAGENTS AND PROCESS FOR DIRECT C-H FUNCTIONALIZATION

Номер: US20220088571A1
Автор: AMRUTE Amol, SCHREYER Hannah, Schueth Ferdi
Принадлежит: STUDIENGESELLSCHAFT KOHLE MBH

The present invention refers to a process for the preparation of a high surface area nanoparticulate alpha alumina. 1. Process for converting γ-AlOOH.xHO with x in the range of 0 to 0.7 into nanoparticulate alpha alumina having particle sizes in the range of 1 to 50 nm and a high specific BET surface area of at least 90 m/g , comprising subjecting said γ-AlOOH.xHO to a milling process in a ball mill with a milling jar and balls in a weight ratio of balls to said γ-AlOOH.xHO of 1 to 200 in a temperature range below the conversion temperature of nanocrystalline γ-AlOOH.xHO to γ-AlO.2. Process for converting γ-AlOOH.xHO into nanoparticulate alpha alumina according to claim 1 , wherein a vibration mill or a planetary mill is used as ball mill or other milling principle capable of bringing this phase change.3. Process for converting γ-AlOOH.xHO into nanoparticulate alpha alumina according to claim 1 , wherein the balls are made of WC or hardened steel.4. Process for converting γ-AlOOH.xHO into nanoparticulate alpha alumina according to claim 1 , wherein milling is performed for 1 to 20 hours.5. Process for converting γ-AlOOH.xHO into nanoparticulate alpha alumina according to claim 1 , wherein a lower limit of the water content of γ-AlOOH.xHO is given with x≥0 and an upper limit is given with x≤0.67.6. Process for converting γ-AlOOH.xHO into nanoparticulate alpha alumina according to claim 1 , wherein an additional water content (xHO) in the γ-AlOOH is below 20 wt.-% with 0≤x<0.67.7. Process for converting γ-AlOOH.xHO into nanoparticulate alpha alumina according to claim 1 , wherein the milling product additionally comprises alpha AlOOH claim 1 , optionally in a weight ratio of up to 30 wt.-% of a total amount of nanoparticulate alpha alumina and alpha AlOOH.8. Process for converting γ-AlOOH.xHO into nanoparticulate alpha alumina according to claim 1 , wherein the obtained milling product is subjected to a heat treatment at temperature in a range between 500-600° C.9. ...

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Номер записи: 55
16-03-2017 дата публикации

CERIUM-ZIRCONIUM-BASED COMPOSITE OXIDE AND METHOD FOR PRODUCING SAME

Номер: US20170072386A1
Автор: Hayashida Hiroyuki, Tatsumi Akiko
Принадлежит: DAIICHI KIGENSO KAGAKU KOGYO CO., LTD.

Provided is a cerium-zirconium-based composite oxide having an excellent OSC, high catalytic activity, and excellent heat resistance, and also provided is a method for producing the same. The cerium-zirconium-based composite oxide comprises cerium, zirconium, and a third element other than these elements. The third element is (a) a transition metal element or (b) at least one or more elements selected from the group consisting of rare earth elements and alkaline earth metal elements. After a heat treatment at 1,000° C. to 1,100° C. for 3 hours, (1) the composite oxide has a crystal structure containing a pyrochlore phase, (2) a value of {I111/(I111+I222)}×100 is 1 or more, and (3) the composite oxide has an oxygen storage capacity at 600° C. of 0.05 mmol/g or more, and an oxygen storage capacity at 750° C. of 0.3 mmol/g or more. 19-. (canceled)10. A cerium-zirconium-based composite oxide comprising cerium , zirconium , and a third element other than these elements;wherein the third element is(a) a transition metal element or(b) at least one or more elements selected from the group consisting of rare-earth elements and alkaline earth metal elements;after a heat treatment at 1,000° C. to 1,100° C. for 3 hours,(1) the composite oxide has a crystal structure containing a pyrochlore phase,(2) when the peak intensity of a (111) plane measured by an X-ray diffraction method is regarded as I111, and the peak intensity of a (222) plane is regarded as I222, a value of {I111/(I111+I222)}×100 is 1 or more, and(3) the composite oxide has an oxygen storage capacity at 600° C. of 0.05 mmol/g or more, and an oxygen storage capacity at 750° C. of 0.3 mmol/g or more; andthe third element is contained in an amount of 0.01 to 10 mol % in terms of oxide.11. The cerium-zirconium-based composite oxide according to claim 10 , wherein the third element is (a) a transition metal element; andafter a heat treatment at 1,000° C. to 1,100° C. for 3 hours, the composite oxide has an oxygen ...

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Номер записи: 56
05-03-2020 дата публикации

Exhaust gas-purifying catalyst composition and method for producing the same, and automobile exhaust gas-purifying catalyst

Номер: US20200070126A1
Автор: Hiroki Nakayama, Hiroyuki Hara, Makoto Nagata
Принадлежит: NE Chemcat Corp

There are provided an exhaust gas-purifying catalyst composition that can purify hydrocarbons, carbon monoxide, nitrogen oxides, and the like discharged from an internal combustion engine or the like, and can maintain excellent purification performance particularly under a wide range of conditions from low temperature to high temperature, and a method for producing the same, and an automobile exhaust gas-purifying catalyst. The present invention provides an exhaust gas-purifying catalyst composition for purifying carbon monoxide (CO), hydrocarbons (HC), nitrogen oxides (NOx), and the like in exhaust gas, comprising at least Rh; a complex oxide that is a particular Ce-containing component (A) and/or a particular Zr-containing component (B); and alumina, wherein Rh is supported on alumina together with the complex oxide, an amount of Rh supported is 0.01 to 5 wt % based on a total amount of Rh, the complex oxide, and alumina, and a content of the complex oxide is 0.1 to 30 wt % in total based on the total amount of Rh, the complex oxide, and alumina, and the like.

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Номер записи: 57
14-03-2019 дата публикации

FERRITE-BASED CATALYST, PREPARATION METHOD THEREFOR, AND METHOD FOR PREPARING BUTADIENE USING SAME

Номер: US20190076836A1
Автор: Byun Young Chang, Cho Ara, KIM Daehyeon, KIM Mi Kyung, LEE Jeong Seok
Принадлежит:

The present specification provides a ferrite catalyst, a method for preparing the same and a method for preparing butadiene using the same. 1. A method for preparing a ferrite catalyst comprising:preparing an aqueous precursor solution including a metal precursor;mixing the aqueous precursor solution with a basic solution and coprecipitating the result;obtaining a solid sample through heat treatment after the coprecipitating;preparing a slurry by mixing the solid sample in distilled water and grinding the result;loading the slurry into a carrier; andbaking the slurry-loaded carrier,wherein the carrier has a pore structure, andthe pore structure has, when employing, in a distance from a center to a surface of the carrier, the center as 0% and the surface as 100%, a porosity of 10% to 50% in 0% to 50%.2. The method for preparing a ferrite catalyst of claim 1 , wherein the metal precursor includes any selected from: a metal nitrate precursor or a metal chloride precursor.3. The method for preparing a ferrite catalyst of claim 2 , wherein the metal nitrate precursor comprises zinc nitrate (Zn(NO).6HO) claim 2 , iron nitrate (Fe(NO).9HO) or a nitrate salt additive claim 2 , and{'sub': 3', '2', '3', '2', '2', '3', '2', '2', '3', '2', '2', '3', '2', '3', '3', '2', '3', '3', '2', '3', '2', '2', '3', '2', '2', '3', '2', '2', '3', '2', '2', '3', '3', '2', '3', '3', '2', '3', '3', '2, 'the nitrate salt is any one or more selected from: beryllium nitrate (Be(NO)), magnesium nitrate (Mg(NO).6HO), calcium nitrate (Ca(NO).4HO), strontium nitrate (Sr(NO).4HO), barium nitrate (Br(NO)), aluminum nitrate (Al(NO).9HO), chromium nitrate (Cr(NO).9HO), cobalt nitrate (Co(NO).6HO), manganese nitrate (Mn(NO).6HO), copper nitrate (Cu(NO).6HO), nickel nitrate (Ni(NO).6HO), lanthanum nitrate (La(NO).6HO), cerium nitrate (Ce(NO).6HO) or bismuth nitrate (Bi(NO).5HO).'}4. The method for preparing a ferrite catalyst of claim 2 , wherein the metal chloride precursor comprises zinc chloride (ZnCl) ...

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Номер записи: 58
12-06-2014 дата публикации

Materials and methods for production of activated carbons

Номер: US20140162873A1
Автор: ZhengRong Gu
Принадлежит: South Dakota State University

The invention is directed to improved methods for producing high-quality activated carbons from biochar. The invention also provides materials and methods for creation of activated carbons useful for purification of water, adsorption of gases or vapors, and catalyst supports. The methods include ash modification, physical activation, the addition of a catalyst, chemical activation, and removal and/or recycling of the catalyst. The usefulness of the present method is that it results in the production of a high-quality activated carbon from a waste product of the biofuel manufacturing process, thereby increasing the economic sustainability and viability of the biofuel production process itself.

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Номер записи: 59
29-03-2018 дата публикации

CATALYST PREPARATION UNIT FOR USE IN PROCESSING OF HEAVY HYDROCARBONS

Номер: US20180086990A1
Автор: COY PLAZAS Alejandro, PEREIRA ALMAO Pedro, PEREIRA COTA Ameli Sofia, SCOTT Carlos Eduardo
Принадлежит:

A catalyst preparation unit for producing an activated hydrocarbon-catalyst mixture. The catalyst preparation unit includes one or more catalyst reactant input conduits; a hydrocarbon input conduit; a water input conduit; one or more catalyst reactant mixing and conveyance systems for receiving and mixing catalyst reactants from the catalyst component input conduits and water provided by the water input conduit to provide one or more catalyst reactant solutions; one or more hydrocarbon mixing and conveyance systems for receiving and mixing the catalyst reactant solutions and hydrocarbons provided by the hydrocarbon input conduit to produce a hydrocarbon-catalyst reactant mixture; at least one reactor located downstream of the mixers, for receiving and activating the hydrocarbon-catalyst reactant mixture, thereby producing the activated hydrocarbon catalyst mixture; a gas/liquid separator located downstream of the reactor, for removing vapors and gas from the activated hydrocarbon-catalyst mixture; and an output conduit for transporting the activated hydrocarbon-catalyst mixture away from the catalyst preparation unit. 1. A catalyst preparation unit for producing an activated hydrocarbon-catalyst mixture , the catalyst preparation unit comprising:i) one or more catalyst reactant input conduits;ii) a hydrocarbon input conduit;iii) a water input conduit;iv) one or more catalyst reactant mixing and conveyance systems for receiving and mixing catalyst reactants from the catalyst component input conduits and water provided by the water input conduit to provide one or more catalyst reactant solutions;v) one or more hydrocarbon mixing and conveyance systems for receiving and mixing the catalyst reactant solutions and hydrocarbons provided by the hydrocarbon input conduit to produce a hydrocarbon-catalyst reactant mixture;vi) at least one reactor located downstream of the mixers, for receiving and activating the hydrocarbon-catalyst reactant mixture, thereby producing the ...

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Номер записи: 60
30-03-2017 дата публикации

CATALYSTS AND METHODS FOR MAKING CYCLIC CARBONATES

Номер: US20170088535A1
Автор: HOU Zhenshan, SONG Baoning
Принадлежит: EAST CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY

Catalysts and methods for making cyclic carbonates are disclosed. The catalyst may include at least one polymer quaternary ammonium salt, at least one metal halide and silica gel. The method of making the cyclic carbonates may include forming a mixture that includes the catalyst and an epoxide, and contacting the mixture with carbon dioxide in a reactor under conditions to form the propylene carbonate. 1. A catalyst comprising:at least one polymer quaternary ammonium salt;at least one metal halide; andsilica gel.2. The catalyst of claim 1 , wherein:{'sub': 2', '2', '3', '3', '2', '2, 'the at least one polymer quaternary ammonium salt is polydimethyl diallyl ammonium bromide, polydimethyl diallyl ammonium chloride or combination thereof; or the at least one metal halide is ZnBr, ZnCl, FeCl, AlCl, NaCl, CaCl, Zn(OAc), LiBr or a combination thereof.'}3. (canceled)4. (canceled)5. The catalyst of claim 1 , wherein:a mass ratio of the metal halide to a total mass comprising the polymer quaternary ammonium salt, the metal halide, and the silica gel, is about 1:200 to about 1:100;a molar ratio of the polymer quarternary ammonium salt to the metal halide is about 2:1; ora mass ratio of the polymer quarternary ammonium salt to the silica gel is about 1:20 to about 1:5.6. (canceled)7. (canceled)8. A method of making a catalyst claim 1 , the method comprising:incubating a first mixture comprising at least one polymer quaternary ammonium salt, at least one metal halide and a solvent;adding silica gel to the first mixture to form a second mixture;incubating the second mixture; andremoving the solvent from the second mixture to obtain the catalyst.9. (canceled)10. The method of claim 8 , further comprising grinding the catalyst to obtain a powdered form of the catalyst.11. (canceled)12. (canceled)13. (canceled)14. The method of claim 8 , further comprising mixing an organic solvent with water to form the solvent before incubating the first mixture.15. (canceled)16. (canceled)17. ( ...

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Номер записи: 61
19-03-2020 дата публикации

Catalyst

Номер: US20200086301A1
Автор: Hiroto Ito, Mitsunobu Ito
Принадлежит: Mitsubishi Chemical Corp

A catalyst for producing unsaturated aldehyde and unsaturated carboxylic acid, wherein the cumulative pore volume (A) of pores having a pore diameter of 1 μm or more and 100 μm or less, in the catalyst, is 0.12 ml/g or more and 0.19 ml/g or less, and the ratio (A/B) of the cumulative pore volume (A) to the cumulative pore volume (B) of pores having a pore diameter of 1 μm or more and 100 μm or less, in a pulverized product not passing through a Tyler 6 mesh, in a pulverized product obtained by pulverization of the catalyst under a particular condition is 0.30 or more and 0.87 or less.

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Номер записи: 62
19-06-2014 дата публикации

Coated Hydrotalcite Catalysts and Processes for Producing Butanol

Номер: US20140171693A1
Автор: Cheng Zhang, Heiko Weiner, Mason Borlik
Принадлежит: Celanese International Corp

A catalyst composition for converting ethanol to higher alcohols, such as butanol, is disclosed. The catalyst composition comprises metal coated hydrotalcite and method of making same.

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Номер записи: 63
14-04-2016 дата публикации

Process for production of methacrylic acid esters

Номер: US20160102043A1
Автор: Andrew M. Lemonds, Jinsuo Xu
Принадлежит: Rohm and Haas Co

A method for producing α-, β-unsaturated carboxylic acid esters in high yield from acetone cyanohydrin and sulfuric acid through the separation and concurrent catalytic conversion of reaction side products to additional α-, β-unsaturated carboxylic acid ester product. The catalyst comprises at least one Group IA element, and boron as a promoter, on a porous support.

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Номер записи: 64
19-04-2018 дата публикации

Exhaust gas purification catalyst

Номер: US20180104679A1
Автор: Hiroaki Naito, Hiromasa Suzuki, Hirotaka Ori, Keiichi Narita, Masahide Miura, Michihiko Takeuchi, Satoru Katoh, Tatsuya Ohashi, Tetsuhiro Hirao, Toshitaka Tanabe, Yoshinori Saito
Принадлежит: Cataler Corp, Toyota Motor Corp

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

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Номер записи: 65
29-04-2021 дата публикации

CATALYTIC CRACKING GASOLINE PREHYDROGENATION METHOD

Номер: US20210122986A1
Автор: BAI Zhengshuai, Bao Xiaojun, Liu Jie, Wang Tinghai, Wang Xueli, YUAN Pei, Yue Yuanyuan, Zhu Haibo
Принадлежит: FUZHOU UNIVERSITY

The invention relates to a catalytic cracking gasoline prehydrogenation method. Thiol etherification and double bond isomerization reactions are carried out on catalytic cracking gasoline through a prehydrogenation reactor. The reaction conditions are as follows: the reaction temperature is between 80° C. and 160° C., the reaction pressure is between 1 MPa and 5 MPa, the liquid-volume hourly space velocity is from 1 to 10 h, and the hydrogen-oil volume ratio is (3-8):1; a prehydrogenation catalyst comprises a carrier and active ingredients, the carrier contains an aluminium oxide composite carrier with a macroporous structure and one or more of ZSM-5, ZSM-11, ZSM-12, ZSM-35, mordenite, amorphous form aluminum silicon, SAPO-11, MCM-22, a Y molecular sieve and a beta molecular sieve, the surface of the carrier is loaded with one or more of the active ingredients cobalt, molybdenum, nickel and tungsten; based on oxides, the content of the active ingredients is between 0.1% and 15.5%. 1. A catalytic cracking gasoline prehydrogenation method , wherein thiol etherification and double bond isomerization reactions are carried out on catalytic cracking gasoline through a prehydrogenation reactor , and the reaction conditions are as follows: the reaction temperature is between 80° C. and 160° C. , the reaction pressure is between 1 MPa and 5 MPa , the liquid-volume hourly space velocity is from 1 to 10 h , and the hydrogen-oil volume ratio is (3-8):1; a prehydrogenation catalyst comprises a carrier and active ingredients , the carrier contains an aluminium oxide composite carrier with a macroporous structure and one or more of ZSM-5 , ZSM-11 , ZSM-12 , ZSM-35 , mordenite , amorphous form aluminum silicon , SAPO-11 , MCM-22 , a Y molecular sieve and a beta molecular sieve; the alumina composite carrier contains 0.1-12 wt % of tungsten-doped lanthanum ferrite , the mesopores of the alumina composite carrier account for 1-85% of the total pores , and the macropores of the ...

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Номер записи: 66
30-04-2015 дата публикации

Oxidation catalyst preparation

Номер: US20150119236A1
Автор: Leonard E. Bogan, Jr.
Принадлежит: Rohm and Haas Co

A method for producing a catalyst by contacting a starting mixed metal oxide catalyst with an aqueous solution comprising oxalic acid and a metal oxide precursor to form a post-treated mixed metal oxide catalyst.

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Номер записи: 67
09-06-2022 дата публикации

METHOD FOR PRODUCING A CATALYST FOR UNSATURATED CARBOXYLIC ACID SYNTHESIS

Номер: US20220177401A1
Автор: Abe Yoshimune, KANUKA Nariyasu, Okada Shigeki
Принадлежит: MITSUBISHI CHEMICAL CORPORATION

A method for producing a catalyst for unsaturated carboxylic acid synthesis is proposed. The method includes: obtaining a dried product by drying and heat-treating a starting material mixed liquid in which supply source compounds of respective catalyst component elements are integrated; and forming a catalyst precursor by supporting powder to be supported on a carrier in the form of a particle aggregate. The powder to be supported is either the dried product or obtained from the dried product. The method further includes calcining the catalyst precursor to form the catalyst. The mass loss rate of the powder to be supported at 300° C. is less than 5 percent by mass, and the difference between the mass loss rate of the powder at 370° C. and the mass loss rate of the powder at 300° C. is not less than 1 percent by mass and not more than 6 percent by mass. 1. A method for producing a catalyst for unsaturated carboxylic acid synthesis , the method comprising:(i) obtaining a dried product by drying and heat-treating a starting material mixed liquid in which supply source compounds of respective catalyst component elements are integrated;(ii) forming a catalyst precursor by supporting powder to be supported on a carrier comprising a particle aggregate, the powder to be supported being either the dried product or obtained from the dried product; and(iii) calcining the catalyst precursor to form the catalyst,wherein a first mass loss rate of the powder to be supported at 300° C. is less than 5 percent by mass, and a difference between a second mass loss rate of the powder to be supported at 370° C. and the first mass loss rate of the powder to be supported at 300° C. is not less than 1 percent by mass and not more than 6 percent by mass, and {'br': None, 'mass loss rate (percent by mass)=[(mass of the powder to be supported before heating (g)−mass of the powder to be supported after heating (g))/mass of the powder to be supported before heating (g)]×100.'}, 'wherein the ...

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Номер записи: 68
05-05-2016 дата публикации

Catalyst composition for the production of syngas from methane, process therefore and process for co2 reforming therewith

Номер: US20160121305A1
Автор: Chandra Mondal KARTICK, Mayank Harishbhai VYAS, Sankar SASMAL
Принадлежит: Saudi Basic Industries Corp

A catalyst for performing carbon dioxide reforming of methane to produce syngas, that includes cobalt, nickel and magnesium oxides disposed a support.

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Номер записи: 69
03-05-2018 дата публикации

CATALYSTS FOR NATURAL GAS PROCESSES

Номер: US20180117570A1
Автор: Cizeron Joel M., Freer Erik M., Gamoras Joel, HONG Jin Ki, Maurer Sam, Rosenberg Daniel, Rumplecker Anja, Schammel Wayne P., Scher Erik C., Zurcher Fabio R.
Принадлежит:

Catalysts, catalytic forms and formulations, and catalytic methods are provided. The catalysts and 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. 1189-. (canceled)192. The catalytic material of claim 191 , wherein B is Ba claim 191 , Sr or Ca.193. The catalytic material of claim 191 , wherein A is Ce claim 191 , Ti claim 191 , Zr or Hf.194. The catalytic material of claim 191 , wherein a is greater than 0.195. The catalytic material of claim 194 , wherein the perovskite has the following formula:{'br': None, 'sup': '1', 'sub': α', 'm', 'n', 'p, 'EABO.'}196. The catalytic material of claim 191 , wherein Eis an element from group 2 or group 3 of the periodic table.197. The catalytic material of claim 191 , wherein the perovskite has the formula ABO.198. The catalytic material of claim 190 , wherein x is greater than zero.199. The catalytic material of claim 190 , wherein b and y are both 0.200. The catalytic material of claim 190 , wherein the catalyst is a nanostructured catalyst.201. The catalytic material of claim 200 , wherein the catalyst is a nanowire catalyst.202. The catalytic material of claim 190 , wherein the catalyst further comprises a dopant selected from one or more elements from groups 2 claim 190 , 6 and the lanthanides.203. The catalytic material of claim 202 , wherein the catalyst further comprises a dopant from each of groups 2 claim 202 , 6 and the lanthanides.204. The catalytic material of claim 202 , wherein the catalyst further comprises a dopant from each of groups 2 and 6. This invention is generally related to catalysts and catalytic forms and formulations for use in natural gas processes, such as the oxidative coupling of methane.Catalysis is the process in which the rate of a chemical reaction is either increased or decreased by means of a catalyst. Positive catalysts lower the rate- ...

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Номер записи: 70
25-08-2022 дата публикации

METAL CARBIDE BASED CATALYST AND METHOD OF MAKING

Номер: US20220266229A1
Автор: ALABDULLAH Mohammed, Ali Ola, DIKHTIARENKO Alla, GASCON Jorge, Osorio Isidoro Morales, RODRIGUEZ GOMEZ Alberto, SHOINKHOROVA Tuiana B., VITTENET Jullian, XU WEI
Принадлежит:

A method for making a metal carbide based catalyst for crude oil cracking includes mixing a clay with a phosphorous based stabilizer material to obtain a liquid slurry; adding an aluminosilicate zeolite and an ultrastable Y zeolite to the liquid slurry; adding AlCl(OH)to the liquid slurry; adding metal carbide particles, having a given diameter, to the liquid slurry to obtain a mixture; and spray drying the mixture to obtain the metal carbide based catalyst. The metal carbide particles are coated with the aluminosilicate zeolite and the ultrastable Y zeolite. 1. A method for making a metal carbide based catalyst for crude oil cracking , the method comprising:mixing a clay with a phosphorous based stabilizer material to obtain a liquid slurry;adding an aluminosilicate zeolite and an ultrastable Y zeolite to the liquid slurry;{'sub': 2', '5, 'adding AlCl(OH)to the liquid slurry;'}adding metal carbide particles, having a given diameter, to the liquid slurry to obtain a mixture; andspray drying the mixture to obtain the metal carbide based catalyst,wherein the metal carbide particles are coated with the aluminosilicate zeolite and the ultrastable Y zeolite.2. The method of claim 1 , wherein the metal carbide is SiC.3. The method of claim 1 , wherein the metal carbide is TiC.4. The method of claim 1 , wherein the metal carbide is WC.5. The method of claim 1 , further comprising:adding zirconium oxide beads to the liquid slurry; andball milling the liquid slurry with the zirconium oxide beads.6. The method of claim 5 , further comprising:separating the zirconium oxide beads from the mixture before the step of spray drying.7. The method of claim 1 , wherein the steps are performed one after another.8. The method of claim 1 , wherein the aluminosilicate zeolite is Zeolite Socony Mobil-5 catalyst.9. The method of claim 1 , wherein the given diameter of the metal carbide particles is between 1 and 1000 nm.10. The method of claim 1 , wherein the clay is Kaolin and the ...

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Номер записи: 71
16-04-2020 дата публикации

OXYGEN STORAGE MATERIAL AND METHOD FOR PRODUCING THE SAME

Номер: US20200114334A1
Автор: MIURA Masahide, Morikawa Akira, Takagi Nobuyuki
Принадлежит:

An oxygen storage material including a ceria-zirconia based composite oxide containing a composite oxide of ceria and zirconia, wherein 2. The oxygen storage material according to claim 1 , wherein80% by atom or more of the entire amount of the rare-earth element (s) is contained in a near-surface region extending from the surface of each primary particle of the ceria-zirconia based composite oxide to a depth of 100 nm in the primary particle.3. The oxygen storage material according to claim 1 , whereinthe primary particles of the ceria-zirconia based composite oxide have an average particle diameter of 2.2 to 4.5 μm.4. The oxygen storage material according to claim 2 , whereinthe primary particles of the ceria-zirconia based composite oxide have an average particle diameter of 2.2 to 4.5 μm.5. The oxygen storage material according to claim 1 , whereinthe ceria-zirconia based composite oxide further comprises at least one additive element selected from the group consisting of praseodymium, scandium, samarium, gadolinium, terbium, dysprosium, ytterbium, lutetium, magnesium, calcium, strontium, barium, and radium, and an amount of the additive element(s) contained in total is 1 to 20% by atom in terms of element relative to the total amount of cerium (Ce) and zirconium (Zr) in the ceria-zirconia based composite oxide.6. The oxygen storage material according to claim 2 , whereinthe ceria-zirconia based composite oxide further comprises at least one additive element selected from the group consisting of praseodymium, scandium, samarium, gadolinium, terbium, dysprosium, ytterbium, lutetium, magnesium, calcium, strontium, barium, and radium, and an amount of the additive element(s) contained in total is 1 to 20% by atom in terms of element relative to the total amount of cerium (Ce) and zirconium (Zr) in the ceria-zirconia based composite oxide.7. The oxygen storage material according to claim 3 , whereinthe ceria-zirconia based composite oxide further comprises at least ...

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Номер записи: 72
25-08-2022 дата публикации

Fluidized cracking process for increasing olefin yield and catalyst composition for same

Номер: US20220267681A1
Автор: Michael Scott Ziebarth, Ranjit Kumar, Udayshankar SINGH, Wu-Cheng Cheng
Принадлежит: WR Grace and Co Conn

An improved process and catalyst composition for cracking hydrocarbons in a fluidized cracking process are disclosed. The process employs circulating inventory of a regenerated cracking having a minimal carbon content. The regenerated catalyst comprises a catalyst/additive composition which contains a pentasil zeolite, iron oxide, and a phosphorous compound. In accordance with the present disclosure, the catalyst/additive contains controlled amounts of iron oxide which is maintained in an oxidized state by maintaining low amounts of carbon on the regenerated catalyst inventory. In this manner it was discovered that the catalyst composition greatly enhances the production and selectivity of light hydrocarbons, such as propylene.

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Номер записи: 73
12-05-2016 дата публикации

SUPPORTED IRON CATALYSTS, METHODS OF MAKING, METHODS OF HYDROCARBON DECOMPOSITION

Номер: US20160129423A1
Автор: Basset Jean-Marie, Reddy Linga Enakonda, Saih Youssef, Zhou Lu
Принадлежит:

Embodiments of the present disclosure also provide for a supported fused Fe catalyst, a method of making the supported fused Fe catalyst, methods of hydrocarbon decomposition, and the like. 1. A composition , comprising a supported fused Fe catalyst , wherein the supported fused Fe catalyst is a fused Fe/AlOcatalyst.2. The composition of claim 1 , wherein Fe is about 5 to 65 wt. % of the supported fused Fe catalyst.3. The composition of claim 1 , wherein the supported fused Fe catalyst has a spinel structure.4. The composition of claim 1 , wherein the XRD profile of the supported fused Fe catalyst does not include a peak for AlO claim 1 , wherein impregnated Fe/AlOcatalyst includes a peak for AlO.5. The composition of claim 1 , wherein the supported fused Fe catalyst has greater activity than impregnated Fe/AlOcatalyst claim 1 , wherein the supported fused Fe catalyst has greater selectivity than impregnated Fe/AlOcatalyst claim 1 , and wherein the supported fused Fe catalyst has a longer ageing time than the supported fused Fe catalyst.6. The composition of claim 1 , wherein the supported fused Fe catalyst is red mud.7. The composition of claim 6 , wherein the red mud is a waste product generated in the industrial production of aluminium.8. A method of making the supported fused Fe catalyst claim 6 , comprising:physically grinding and mixing a Fe nitrate and a support nitrate;calcining under static air from about room temperature to 350° C. for about 2 to 4 h with a 3 to 8° C./min latter;reducing the temperature down to room temperature under air flow; andgrinding the final sample to fine powder to form the supported fused Fe catalyst.9. The method of claim 8 , wherein the support nitrate is selected from the group consisting of: aluminum nitrate claim 8 , magnesium nitrate claim 8 , calcium nitrate and a combination thereof.10. The method of claim 8 , wherein Fe is about 5 to 65 wt. % of the supported fused Fe catalyst.11. A method of selectively producing ...

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Номер записи: 74
14-05-2015 дата публикации

Process for the preparation of methanol and methanol-derived products from carbon oxides

Номер: US20150133699A1
Автор: Atsushi URAKAWA, Atul Baban Bansode
Принадлежит: Institut Catala dInvestigacio Quimica ICIQ

A process for the preparation of methanol having the process a carbon oxides per-pass conversion equal to or higher than 65%, and a selectivity to methanol formation equal to or higher than 75% by submitting carbon dioxide, carbon monoxide or a mixture of carbon monoxide and carbon dioxide to a hydrogenation reaction using a specific metal compound and specific reaction conditions of temperature, pressure, space velocity and a specific range of molar ratio of hydrogen to carbon dioxide, of hydrogen to carbon monoxide, or of hydrogen to the mixture of carbon monoxide and carbon dioxide. It further relates to a process for converting the methanol obtained into dimethyl ether or into a mixture of (C 2 -C 8 )alkene and (C 1 -C 8 )alkane.

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Номер записи: 75
10-05-2018 дата публикации

Catalysts For The Dehydration Of Hydroxypropionic Acid And Its Derivatives

Номер: US20180126363A1
Автор: Collias Dimitris Ioannis, Godlewski Jane Ellen, Velásquez Juan Esteban, Wireko Fred Christian
Принадлежит:

Hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures thereof are dehydrated using a catalyst and a method to produce bio-acrylic acid, acrylic acid derivatives, or mixtures thereof. A method to produce the dehydration catalyst is also provided. 1. A method of making acrylic acid , acrylic acid derivatives , or mixtures thereof comprising contacting the following compositions:a) hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures thereof;b) water vapor; and '(a) wherein said one or more amorphous phosphate salts consist essentially of:', 'c) a dehydration catalyst consisting essentially of one or more amorphous phosphate salts, one or more crystalline phosphate salts, and one or more non-phosphate salts; wherein said one or more crystalline phosphate salts and said one or more non-phosphate salts are substantially chemically inert to said one or more amorphous phosphate salts;'}i) one or more monovalent cations, and {'br': None, 'sub': 2(1−x)', '(4−x), 'sup': '−', '[HPO]\u2003\u2003(I);'}, 'ii) one or more phosphate anions selected from the group represented by empirical formula (I)wherein x is any real number equal to or greater than 0 and equal to or less than 1; wherein said one or more amorphous phosphate salts are neutrally charged; '(b) wherein said one or more crystalline phosphate salts consist essentially of:', 'or any hydrated form of said one or more amorphous phosphate salts, and mixtures thereof;'}i) one or more polyvalent cations, and {'br': None, 'i': 'c', 'sub': (f−2g−h)', 'f', '(4f−g), 'sup': '(2f+h)−', '() [HPO]\u2003\u2003(II);'}, 'ii) one or more phosphate anions selected from the group represented by molecular formula (II) (d) or any hydrated form of said one or more crystalline phosphate salts, and mixtures thereof;', '(e) wherein said one or more non-phosphate salts consist essentially of:, 'wherein f is a positive integer; wherein g is a positive integer or zero; wherein h is an integer; wherein (f−2g−h) is ...

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Номер записи: 76
10-05-2018 дата публикации

Purification Of Bio Based Acrylic Acid To Crude And Glacial Acrylic Acid

Номер: US20180127348A1
Автор: Collias Dimitris Ioannis, Godlewski Jane Ellen, Lingoes Janette Villalobos, Velásquez Juan Esteban
Принадлежит:

Processes for the purification of bio-based acrylic acid to crude and glacial acrylic acid are provided. The bio-based acrylic acid is produced from hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures thereof. The purification includes some or all of the following processes: extraction, drying, distillation, and melt crystallization. The produced glacial or crude acrylic acid contains hydroxypropionic, hydroxypropionic acid derivatives, or mixtures thereof as an impurity. 1. A glacial acrylic acid composition wherein a portion of the remaining impurities in said glacial acrylic acid composition is lactic acid; wherein said glacial acrylic acid composition has a bio-based content greater than about 3%; and wherein said glacial acrylic acid composition is produced by the steps comprising:j. Providing an aqueous solution of acrylic acid comprising: 1) acrylic acid; and 2) lactic acid, lactic acid derivatives, or mixtures thereof, and wherein said aqueous solution of acrylic acid is essentially free of maleic anhydride, furfural, and formic acid;k. Extracting said aqueous solution of acrylic acid, with a solvent to produce an extract;l. Drying said extract to produce a dried extract;m. Distilling said dried extract to produce distilled acrylic acid composition;n. Cooling said distilled acrylic acid composition to a temperature from about −21° C. to about 14° C. to produce crystals of acrylic acid;o. Partially melting said crystals of acrylic acid to produce a liquid/solid mixture;p. Decanting said liquid/solid mixture to produce a purified acrylic acid solid composition;q. Fully melting said purified acrylic acid solid composition to produce a purified acrylic acid liquid composition; andr. Determining the acrylic acid purity of said purified acrylic acid liquid composition, and if the purity is less than about 98 wt % acrylic acid, repeating said cooling, partially melting, decanting, and fully melting steps on the purified acrylic acid liquid ...

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Номер записи: 77
02-05-2019 дата публикации

Method for the Preparation of a Vanadium Based Catalyst

Номер: US20190126244A1
Автор: Gabrielsson Pär L.T., Høj Jakob Weiland, Jørgensen Claus S.
Принадлежит: UMICORE AG & CO. KG

Method for the preparation of a catalyst comprising vanadium pentoxide supported on a metal oxide catalyst carrier comprising the steps of a) providing particles of crystalline vanadium pentoxide and particles of a metal oxide catalyst carrier; b) solid state mixing the particles and dispersing the vanadium pentoxide particles on surface of the metal oxide carrier particles; and c) anchoring the dispersed vanadium pentoxide particles on surface of the metal oxide carrier particles by calcination at a temperature above 500° C., characterized in that sintering of the vanadium pentoxide particles is suppressed by addition of an anti-sintering metal oxide component, such as tungsten trioxide, during the anchoring in step c). 1. Method for the preparation of a catalyst comprising vanadium pentoxide supported on a metal oxide catalyst carrier comprising the steps ofa) providing particles of crystalline vanadium pentoxide and particles of a metal oxide catalyst carrier;b) solid state mixing the particles and dispersing the vanadium pentoxide particles on surface of the metal oxide carrier particles; andc) anchoring the dispersed vanadium pentoxide particles on surface of the metal oxide carrier particles by calcination at a temperature above 500° C., characterized in that sintering of the vanadium pentoxide particles is suppressed by addition of an anti-sintering metal oxide component during the anchoring in step c).2. The method of claim 1 , wherein the particle size of the crystalline vanadium pentoxide is between 0.5 and 10 μm.3. The method of claim 2 , wherein the particle size is between 2 and 5 μm.4. The method according to claim 1 , wherein the metal oxide catalyst carrier comprises titania.5. The method according to claim 1 , wherein the anti-sintering metal oxide component comprises tungsten oxide or silica and mixtures thereof.6. The method according to claim 1 , comprising the further step of preparing a washcoat by suspending the calcined particles obtained in ...

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Номер записи: 78
01-09-2022 дата публикации

Selective production of propylene and butylene from methane

Номер: US20220274902A1
Автор: Muhammad H. HAIDER
Принадлежит: SABIC Global Technologies BV

Disclosed are processes for producing propylene and butylene. The processes can include contacting a first stream containing methane with an oxidant and oxidizing at least a portion of the methane under conditions suitable to produce a second stream containing carbon monoxide (CO) and hydrogen (H2), contacting the second stream with a CO hydrogenation catalyst under conditions suitable to produce a third stream containing propanol and butanol, and contacting the third stream with an dehydration catalyst under conditions suitable to dehydrate at least a portion of the propanol and butanol and produce a products stream containing propylene and butylene.

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Номер записи: 79
03-06-2021 дата публикации

STRUCTURED CATALYSTS FOR PRE-REFORMING HYDROCARBONS

Номер: US20210162374A1
Автор: Bae Joongmyeon, Bae Minseok, Katikaneni Sai P., LEE Sangho
Принадлежит:

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

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Номер записи: 80
03-06-2021 дата публикации

ELECTROCATALYSTS COMPRISING TRANSITION METALS AND CHALCOGEN FOR OXYGEN EVOLUTION REACTIONS (OER) AND MANUFACTURING THEREOF

Номер: US20210162392A1
Автор: ABED Jehad, Sargent Edward, THORPE Steven
Принадлежит:

The present description relates to metal alloy electrocatalysts, preferably composed of Ni and Co as transition metals and Se as a chalcogen. The electrocatalysts can take the form of nanochalcogenides that can be made using cryogenic milling followed by surfactant-assistant milling. The electrocatalysts can be used in the context of water electrolysis or electroreduction of COgas into carbon based products. 1. A process for producing a nanochalcogenide for use in electrocatalysis , comprising:subjecting at least two transition metals and at least one chalcogen to cryogenic milling to produce an alloyed chalcogenide material;subjecting the alloyed chalcogenide material to surfactant-assisted milling to produce a slurry comprising a nanochalcogenide; andseparating the nanochalcogenide from the slurry.2. The process of claim 1 , wherein the cryogenic milling comprises cryogenic ball milling.3. The process of claim 2 , wherein the cryogenic milling comprises linear vibrational milling performed at speeds of 25 Hz to 35 Hz.4. The process of claim 2 , wherein the cryogenic ball milling is performed at a ball-to-powder ratio (BPR) of 8:1 to 12:1 on a mass basis.5. The process of claim 1 , wherein the alloyed chalcogenide material produced by cryogenic milling comprises particles having an average size above 1000 nm claim 1 , measured using DLS or SEM.6. The process of claim 1 , wherein the alloyed chalcogenide material produced by cryogenic milling comprises MME and/or (MM)E claim 1 , wherein Mis a first transition metal claim 1 , Mis a second transition metal and E is a chalcogen claim 1 , and is a single phase.7. The process of claim 1 , wherein the surfactant-assisted milling comprises surfactant-assisted ball milling performed in the presence of at least one surfactant and a solvent.8. The process of claim 7 , wherein the solvent comprises an alcohol and the least one surfactant comprises diphenylphosphoryl acid (DPPA) claim 7 , or oleic acid claim 7 , or CRAB ...

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Номер записи: 81
19-05-2016 дата публикации

Monolithic structured catalyst for carbon monoxide gase-phase coupling to dialkyl oxalate & preparation method and application thereof

Номер: US20160136622A1
Автор: Baowei Wang, Jing LV, Shengping Wang, Xinbin Ma, Yujun Zhao, Zhenghua Li
Принадлежит: Individual

Provided was a monolithic catalyst for synthesizing an oxalate by carbon monoxide (CO) gaseous-phase coupling, a preparation method and the use thereof. In the catalyst, a ceramic honeycomb or a metal honeycomb was used as skeletal carrier, metal oxides were used as a carrier coating, precious metals Pt, Pd, Ir, Rh were used as active ingredients, as well as Fe, Co, Ni were used as additives, wherein the carrier coating accounts for 5 to 50 wt. % of the honeycomb carrier; the active ingredients of the catalyst account for 0.1 to 5 wt. % of the carrier coating; the additives of the catalyst account for 0.3 to 10 wt. % of the carrier coating; and the atomic ratio of the active ingredients to the additives was 0.1 to 3. the reaction for synthesizing the oxalate was carried out in a fixed bed reactor, wherein, N2 was used as a carrier gas. The volume ratio of N2:CO:Alkyl nitrite was 20-80:5-60:10-40, and the retention time was 0.5-10 s.

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Номер записи: 82
21-05-2015 дата публикации

GAS PHASE HETEROGENEOUS CATALYTIC OXIDATION OF ALKANES TO ALIPHATIC KETONES AND/OR OTHER OXYGENATES

Номер: US20150141239A1
Автор: Lin Manhua, Wang Xiang, Yeom Younghoon
Принадлежит:

A catalyst, its method of preparation and its use for producing aliphatic ketones by subjecting alkanes Cto Cto a gas phase catalytic oxidation in the presence of air or oxygen, and, optionally, steam and/or one or more diluting gases. The catalyst comprises a catalytically active mixed metal oxide phase and a suitable support material onto and/or into which the active catalytic phase is dispersed. 18.-. (canceled)9. A supported catalyst comprising a catalytically active mixed metal oxide phase and a suitable multi-dimensional support material onto and/or into which the catalytically active phase is incorporated and wherein the catalytically active phase comprises a compound having the formula ABXOwherein A is at least one of the group of elements Mo , Nb , Ta , Ti , W , and Zr; B is at least one of the group of elements Cs , K , Li , Na and Rb; and X , if present , is at least one of the group of elements Al , Ba , Ca , Dy , Fe , Ga , La , Mg , Pd , Pr , Si , Sr , V and Zn in addition to the elements of groups A and B; and wherein a=1 , b is 0.01 to 20 , x is 0 to 1 , and n is dependent on the oxidation state of the other elements , and the support comprises at least one high surface area and thermally stable carbide , nitride , graphite or oxide material , said oxide being selected from the group of AlO , CeO , CeO , LaO , MgO , NbO , SiO , TiO , YO , YbOand ZrO , or a composite thereof.10. The catalyst according to claim 9 , wherein catalytically active phase A is at least one of the group of element Mo claim 9 , Nb claim 9 , Ta and W; B is at least one of the group of elements Cs claim 9 , K and Rb; and X claim 9 , if present claim 9 , is at least one of the group of elements Ba claim 9 , Ca claim 9 , Dy claim 9 , La claim 9 , Li claim 9 , Mg claim 9 , Na claim 9 , Pd claim 9 , Pr claim 9 , Sr and Zn claim 9 , and wherein the support material is at least one high surface area oxide claim 9 , selected from the group of LaO claim 9 , MgO claim 9 , NbO claim 9 , ...

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Номер записи: 83
03-06-2021 дата публикации

CATALYSTS FOR CO2 HYDROGENATION

Номер: US20210163827A1
Автор: Basset Jean-Marie, ENAKONDA Linga Reddy, HENGNE Amol M., HUANG Kuo-Wei
Принадлежит:

Embodiments of the present disclosure describe methods of preparing pre-catalysts that may be activated under methane to form catalysts for the hydrogenation of carbon dioxide to form olefins, among other chemical species. Embodiments of the present disclosure also describe methods of preparing catalysts and pre-catalysts, catalyst and pre-catalyst compositions, and methods of producing one or more chemical species using catalysts. 1. A method of preparing a catalyst , comprising:grinding one or more of a metal precursor, a promoter precursor, and a support precursor to form a mixture;calcining the mixture at one or more temperatures to form a pre-catalyst; and{'sub': '2', 'flowing methane over the pre-catalyst to form a catalyst active in the production of olefins via COhydrogenation.'}2. The method of claim 1 , wherein the metal precursor includes one or more of iron claim 1 , cobalt claim 1 , and nickel.3. The method of claim 1 , wherein the metal precursor includes one or more of a metal oxide claim 1 , metal hydroxide claim 1 , metal nitrate claim 1 , metal oxalate claim 1 , metal chloride claim 1 , metal carbonyl claim 1 , and metal sulphate.4. The method of claim 1 , wherein the promoter precursor includes one or more of an alkali metal and alkaline earth metal.5. The method of claim 1 , wherein the promoter precursor includes one or more of sodium claim 1 , calcium claim 1 , potassium claim 1 , caesium claim 1 , manganese claim 1 , copper claim 1 , lithium claim 1 , rubidium claim 1 , francium claim 1 , beryllium claim 1 , magnesium claim 1 , strontium claim 1 , barium claim 1 , and radium.6. The method of claim 1 , wherein the support precursor includes one or more of aluminum claim 1 , titanium claim 1 , zirconium claim 1 , silicon claim 1 , magnesium claim 1 , carbon claim 1 , carbon nanotubes claim 1 , graphene claim 1 , zinc claim 1 , and zeolites.7. The method of claim 1 , wherein the metal precursor claim 1 , promoter precursor claim 1 , and support ...

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Номер записи: 84
18-05-2017 дата публикации

ALKANE OXIDATIVE DEHYDROGENATION AND/OR ALKENE OXIDATION

Номер: US20170137347A1
Автор: BOS Alouisius Nicolaas Renée, SCHOONEBEEK Ronald Jan, SPIES Frank, VERHAAK Michiel Johannes F. M.
Принадлежит:

The invention relates to a process of the oxidative dehydrogenation of an alkane containing 2 to 6 carbon atoms and/or the oxidation of an alkene containing 2 to 6 carbon atoms, comprising contacting a first gas stream comprising oxygen and the alkane containing 2 to 6 carbon atoms and/or the alkene containing 2 to 6 carbon atoms with a mixed metal oxide catalyst containing molybdenum, vanadium, niobium and optionally tellurium; followed by contacting a second gas stream comprising methane, an inert gas or oxygen or any combination of two or more of these with the catalyst, wherein the second gas stream comprises 0 to 25 vol. % of the alkane containing 2 to 6 carbon atoms and/or alkene containing 2 to 6 carbon atoms. 1. A process of the oxidative dehydrogenation of an alkane containing 2 to 6 carbon atoms and/or the oxidation of an alkene containing 2 to 6 carbon atoms , comprisingcontacting a first gas stream comprising oxygen and the alkane containing 2 to 6 carbon atoms and/or the alkene containing 2 to 6 carbon atoms with a mixed metal oxide catalyst containing molybdenum, vanadium, niobium and optionally tellurium; followed bycontacting a second gas stream comprising methane, an inert gas or oxygen or any combination of two or more of these with the catalyst, wherein the second gas stream comprises 0 to 25 vol. % of the alkane containing 2 to 6 carbon atoms and/or alkene containing 2 to 6 carbon atoms.2. The process according to claim 1 , wherein the temperature during the entire process is of from 300 to 500° C.3. The process according to claim 2 , wherein the temperature is of from 310 to 450° C.4. The process according to claim 1 , wherein the pressure during the entire process is of from 0.1 to 15 bara.5. The process according to claim 1 , wherein the process is a process of the oxidative dehydrogenation of an alkane containing 2 to 6 carbon atoms and wherein said alkane is ethane or propane.6. The process according to claim 1 , wherein the process is a ...

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Номер записи: 85
08-09-2022 дата публикации

Processes for Upgrading Alkanes and Alkyl Aromatic Hydrocarbons

Номер: US20220281783A1
Автор: John S. COLEMAN, Xiaoying Bao
Принадлежит: ExxonMobil Chemical Patents Inc

Processes for upgrading a hydrocarbon. The process can include introducing, contacting, and halting introduction of a hydrocarbon-containing feed into a reaction zone. The feed can be contacted with a catalyst within the reaction zone to effect dehydrogenation, dehydroaromatization, and/or dehydrocyclization of the feed to produce a coked catalyst and an effluent. The process can include introducing, contacting, and halting introduction of an oxidant into the reaction zone. The oxidant can be contacted with the coked catalyst to effect combustion of the coke to produce a regenerated catalyst. The process can include introducing, contacting, and halting introduction of a reducing gas into the reaction zone. The reduction gas can be contacted with the regenerated catalyst to produce a regenerated and reduced catalyst. The process can include introducing and contacting an additional quantity of the feed with the regenerated and reduced catalyst to produce a re-coked catalyst and additional first effluent.

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Номер записи: 86
26-05-2016 дата публикации

REDUCED GRAPHENE OXIDE-SILVER PHOSPHATE (RGO-AGP) AND A PROCESS FOR THE PREPARATION THEREOF FOR THE PHOTODEGRADATION OF ORGANIC DYES

Номер: US20160144349A1
Автор: Das Dipti Prakasini, Das Jasobanta, Dash Ajit, Samal Alaka
Принадлежит: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH

RGO is coupled with AgP in a novel one-pot photo-reduction technique in presence of a sacrificial agent like dry ethanol. Tests of the collected dirty green semiconducting towards adosoptive photodegradation of textile dyes showed that 4 wt. % RGO-AgP can degrade 100, 76, 98.57, 67.88, 69.92% of RhB, Rh6G, MB, CR and MO, respectively within only 5 min under VISL illumination over 1.5 g/L of catalyst. 1) Reduced graphene oxide-silver phosphate (RGO-AgP) which comprises reduced graphene oxide (RGO) in the range of 0.82-5.44% and AgP in the range of 94.56-99.18%.2) One-pot in-situ photoreduction process for synthesis of a reduced graphene oxide-silver phosphate (RGO-AgP) as claimed in claim 1 , wherein the said process comprising the steps of:(a) pretreating graphene oxide (GO) at 70-90° C. for 24-30 h;(b) making a transparent dispersion of graphene oxide as obtained in step (a) by ultrasonication for 30-60 mins;{'sub': '3', '(c) adding AgNOon to graphene oxide dispersion as obtained in step (b) followed by ultrasonication of the reaction mixture for 15-30 mins;'}(d) adding stoichiometric quantity of aqueous solution of di-ammonium hydrogen phosphate in the reaction mixture as obtained in step (c);(e) aging the reaction mixture as obtained in step (d) for a period ranging between 30-60 mins followed by addition of dry ethanol;(f) visible light illumination of the reaction mixture as obtained in step (e) for 1-2 h followed by separation of solids via centrifugation and drying at 60-70° C. for a period ranging 24-26 h and grinding to obtain reduced graphene oxide-silver phosphate (RGO-AgP).3) The process as claimed in claim 2 , wherein mole ratio of graphene oxide and AgNOis in the range of 0.035-0.28.4) The process as claimed in claim 2 , wherein the AgP is prepared in-situ.5) The process as claimed in claim 2 , wherein in-situ prepared AgP is used as support.6) The process as claimed in claim 2 , wherein graphene oxide is used as dopant.7) The process as claimed in ...

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Номер записи: 87
10-06-2021 дата публикации

FABRICATION PROCESS FOR EFFICIENT VISIBLE LIGHT PHOTOCATALYSTS

Номер: US20210170385A1
Автор: MRAMOR Peter, SOUSA Duarte, VAN DER ENDE Ryan
Принадлежит:

The present relates to the field of iron-doped TiOnanocrystals/photocatalysts and to a method of their production. The method comprising the steps: a) dissolving a compound comprising Fe (III); b) mixing an alcohol to the ferric solution to obtain a mixture; c) adjusting the pH of the mixture by adding a suitable acid to the mixture to obtain an acidic composition; d) producing a gelation reaction by mixing a titanium (IV) complex to the acidic composition, to obtain a dispersion comprising Fe-doped TiO, e) drying the dispersion, to obtain a dried product substantially free of iron oxide contamination; f) grinding the dried product, to obtain a powder; g) washing the powder with an aqueous liquid, to obtain a washed powder comprising a Fe-doped TiOphotocatalyst precursor; and h) drying the washed powder, to obtain the Fe-doped TiOphotocatalyst precursor. The method further comprising calcining and grinding steps. 2. The method according to claim 1 , further comprising the steps{'sub': 2', '2, 'b': '189', 'i) calcining the Fe-doped TiOphotocatalyst precursor, to obtain a calcined substance () comprising an Fe-doped TiOphotocatalyst; and'}{'sub': '2', 'j) grinding the calcined substance to obtain the Fe-doped TiOphotocatalyst.'}3. The method according to claim 1 , wherein the compound comprising Fe (III) is at least one of ferric nitrite and ferric chloride.4. The method according to claim 1 , wherein the C-Csubstituted or unsubstituted alcohol is one of ethyl alcohol claim 1 , 2-propanol claim 1 , or butanol.5. The method according to claim 1 , wherein the titanium (IV) complex is at least one of titanium tetraisopropoxide claim 1 , titanium isobutoxide claim 1 , and titanium tert-butoxide.6. The method according to claim 1 , wherein the suitable acid is selected from the group consisting of HNO claim 1 , HCl claim 1 , and glacial acetic acid.7. The method according to claim 1 , wherein the Fe-doped TiOphotocatalyst precursor has a structure consisting of TiOdoped ...

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Номер записи: 88
25-05-2017 дата публикации

CRACKING CATALYST COMPOSITION FOR CRACKING OF HEAVY HYDROCARBON FEED STOCKS AND PROCESS FOR PREPARING THE SAME

Номер: US20170144140A1
Автор: CHIDAMBARAM Velusamy, CHOUDHURY Shiba Prasad, DAS Biswapriya, Kasliwal Pankaj Kumar, Kumar Brijesh, Kuvettu Mohan Prabhu, PULIKOTTIL Alex Cheru, Sarkar Biswanath, Thakur Ram Mohan
Принадлежит: INDIAN OIL CORPORATION LIMITED

The present invention relates to a Cracking Catalyst composition for cracking of heavy hydrocarbon feed stocks and process for preparing the catalyst. The catalyst is prepared by incorporating 1-10 wt % phosphate treated USY zeolite in which phosphate is present in the range of 10 to 50 wt % on the basis of phosphated zeolite, in a mixture of 10-50 wt % dispersible alumina, 0-30 wt % non-dispersal alumina, 5-30 wt % colloidal silica, 15-50 wt % clay and 5-15 wt % phosphate. 1. A composition of catalyst additive comprising of 1-10 wt % phosphate treated zeolite , 10-50 wt % dispersible alumina , 0-30 wt % non-dispersible alumina , 5-30 wt % silica , 15-50 wt % clay and 5-15 wt % phosphate.2. The catalyst composition of claim 1 , wherein phosphate treated zeolite is prepared by treating large pore zeolite with a source of phosphate.3. The catalyst composition of claim 2 , wherein large pore zeolite is prepared by hydrothermal treatment of zeolite selected from the group comprising of faujasite claim 2 , mordenite claim 2 , beta claim 2 , ZSM-5 claim 2 , ZSM-11.4. The catalyst composition of claim 1 , wherein phosphated zeolite contains phosphate ranging from 2 wt % to 55 wt %.5. The catalyst composition of claim 1 , wherein for the phosphated zeolite claim 1 , phosphate is selected from group comprising of phosphoric acid claim 1 , mono-ammonium hydrogen phosphate and di-ammonium hydrogen phosphate.6. The catalyst composition of claim 1 , wherein the silica alumina ratio of treated zeolite is in the range of 10-100 & particle size below 1 micron.7. The catalyst composition of claim 1 , wherein the dispersible alumina is selected from the group comprising of pseudo boehmite claim 1 , Catapal B claim 1 , Pural 200 claim 1 , Disperal 40 claim 1 , Pural 400.8. The catalyst composition of claim 1 , wherein the non-dispersible alumina is selected from the group comprising of alumina trihydrate & gamma alumina.9. The catalyst composition of claim 1 , wherein the silica is ...

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Номер записи: 89
15-09-2022 дата публикации

LAYERED MAGNESIUM MANGANESE COMPOSITE MATERIAL FOR COPPER ION ADSORPTION, PREPARATION METHOD THEREFOR AND APPLICATION THEREOF

Номер: US20220288567A1
Автор: CHEN Meiqing, DANG Zhi, LIN Lu, PEI Feike, WU Pingxiao
Принадлежит: SOUTH CHINA UNIVERSITY OF TECHNOLOGY

Disclosed are a layered magnesium manganese composite material for copper ion adsorption, a preparation method therefor and an application thereof. The preparation method comprises: (1) dissolving a soluble magnesium salt and a soluble manganese salt in water to obtain a compound solution of the magnesium salt and the manganese salt; (2) dissolving a soluble carbonate and a soluble hydroxide in water to obtain a compound solution of the carbonate and the hydroxide; (3) dropwise adding the compound solution of the magnesium salt and the manganese salt into the compound solution obtained in step (2), stirring a mixed solution and allowing the mixed solution to age, and subjecting an obtained precipitate to centrifugation, washing, drying, grinding and sieving to obtain the layered magnesium manganese composite material for copper ion adsorption. The composite material provided by the present invention is excellent in ability to fix Cu, and features high absorption efficiency, high adsorption speed and stability. The composite material not only can fix Cu efficiently, but also has important environmental significance in treating antibiotics in the environment and achieving in-situ remediation of compound pollution of heavy metals and organic matters. 1. A method for preparing a layered magnesium manganese composite material for copper ion adsorption , comprising the following steps:(1) dissolving a soluble magnesium salt and a soluble manganese salt in water to obtain a compound solution of the magnesium salt and the manganese salt;(2) dissolving a soluble carbonate and a soluble hydroxide in water to obtain a compound solution of the carbonate and the hydroxide;(3) dropwise adding the compound solution of the magnesium salt and the manganese salt obtained in step (1) into the compound solution of the carbonate and the hydroxide obtained in step (2), performing even stirring to obtain a mixed solution, allowing the mixed solution to age, centrifugalizing the mixed ...

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Номер записи: 90
07-05-2020 дата публикации

Supported perovskite-oxide composites for enhanced low temperature thermochemical conversion of co2 to co

Номер: US20200139351A1
Автор: Bryan HARE, Debtanu MAITI, John Kuhn, Venkat BHETHANABOTLA, Yolanda DAZA
Принадлежит: UNIVERSITY OF SOUTH FLORIDA

Disclosed herein is a catalyst composite containing a perovskite-oxide and an oxide support, methods of preparing a catalyst composite containing a perovskite-oxide and an oxide support, and the use thereof for CO2 conversion by a reverse water gas shift chemical looping (RWGS-CL) process.

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Номер записи: 91
31-05-2018 дата публикации

METHOD FOR PRODUCING CATALYSTS CONTAINING CHROME, FOR THE OXIDATIVE DEHYDROGENATION OF N-BUTENES TO FORM BUTADIENE WHILE AVOIDING CR(VI) INTERMEDIATES

Номер: US20180147561A1
Автор: AMAKAWA Kazuhiko, GRÜNE Philipp, Hammon Ulrich, UNGELENK Jan, WALSDORFF Christian
Принадлежит:

Process for producing a multimetal oxide catalyst comprising molybdenum, chromium and at least one further metal by mixing of a pulverulent multimetal oxide comprising molybdenum and at least one further metal but no chromium with pulverulent chromium(III) oxide and thermal treatment of the resulting pulverulent mixture in the presence of oxygen at a temperature in the range from 350° C. to 650° C. 14.-. (canceled)6. The process according to claim 5 , wherein the production of the pulverulent multimetal oxide which comprises molybdenum and at least one further metal but no chromium comprises the steps (i) to (iv):(i) producing a multimetal oxide precursor composition comprising molybdenum and at least one further metal but no chromium,(ii) shaping of shaped bodies from the multimetal oxide precursor composition,(iii) calcining the shaped bodies,(iv) milling of the shaped bodies to give a pulverulent multimetal oxide.7. The process according to claim 6 , wherein the process comprises the steps (v) to (viii):(v) mixing of the pulverulent multimetal oxide comprising molybdenum and at least one further metal but no chromium with pulverulent chromium(III) oxide,(vi) thermally treating the pulverulent mixture in the presence of oxygen at a temperature of from 350 to 650° C. to give a pulverulent multimetal oxide catalyst comprising molybdenum, chromium and at least one further metal,(vii) coating of a support body with the pulverulent multimetal oxide catalyst,(viii) thermally treating the coated support body.9. The process according to claim 5 , wherein in formula (I):a=0.3 to 1.5;b=2 to 4;c=3 to 10;d=0;f=0.1 to 10; andg=0.01 to 1; and wherein in formula (II):a=0.3 to 1.5;b=2 to 4;c=3 to 10;d=0;e=0.1 to 2;f=0.1 to 10; andg=0.01 to 1. The invention relates to a catalyst, in particular a mixed oxide catalyst, for the oxidative dehydrogenation of n-butenes to butadiene, the production thereof, the use thereof and also a process for the oxidative dehydrogenation of n-butenes ...

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Номер записи: 92
17-06-2021 дата публикации

INDIUM-BASED CATALYSTS AND PRE-CATALYSTS

Номер: US20210178368A1
Автор: BAVYKINA Anastasiya, GASCON Jorge, GEVERS Lieven, OULD-CHIKH Samy, YARULINA Irina
Принадлежит:

Embodiments of the present disclosure describe pre-catalysts comprising including one or more of indium oxide, indium hydroxide, indium oxyhydroxide, an active oxide, and a refractory oxide. Embodiments of the present disclosure also describe method of making pre-catalysts based on one or more of impregnation, precipitation or co-precipitation, ball milling, and metal-organic framework (MOF)-mediated synthesis. Embodiments of the present disclosure further describe methods of activating pre-catalysts and synthesizing one or more of methanol and olefins using catalysts obtained from the pre-catalysts. 1. A pre-catalyst , comprising:one or more of indium oxide, indium hydroxide, and indium oxyhydroxide mixed with an active oxide and/or carbon source;wherein the active oxide includes a mixed valence metal oxide.2. The pre-catalyst of claim 1 , wherein the active oxide is a reducible oxide.3. (canceled)4. The pre-catalyst of claim 1 , wherein the active oxide includes one or more of cobalt claim 1 , nickel claim 1 , copper claim 1 , manganese claim 1 , iron claim 1 , and vanadium.5. The pre-catalyst of claim 1 , further comprising a refractory oxide.6. The pre-catalyst of claim 5 , wherein the refractory oxide includes one or more of zirconium dioxide (ZrO) claim 5 , silica (SiO) claim 5 , alumina (AlO) claim 5 , gallium oxide (GaO) claim 5 , cerium oxide (CeO) claim 5 , vanadium oxide (VO) claim 5 , chromium oxide (CrO) claim 5 , titanium dioxide (TiO) claim 5 , magnesium oxide (MgO) claim 5 , zinc oxide (ZnO) claim 5 , tin oxide (SnO) claim 5 , and carbon black (C).7. The pre-catalyst of claim 1 , wherein the pre-catalyst is a supported pre-catalyst or a bulk pre-catalyst.8. The pre-catalyst of claim 1 , wherein a form of the catalyst is one or more of extrudates claim 1 , granules claim 1 , spheres claim 1 , monoliths claim 1 , particles claim 1 , and pellets.9. The catalyst of claim 1 , wherein the catalyst further comprises one or more of lubricants claim 1 , ...

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Номер записи: 93
09-06-2016 дата публикации

USES OF CERTAIN PLATINOID ACCUMULATING PLANTS FOR USE IN ORGANIC CHEMICAL REACTIONS

Номер: US20160159934A1
Автор: BES Clemence, ESCANDE Vincent, GRISON Claude, RENARD Brice-Loic
Принадлежит:

A composition derived from the acid treatment of ashes obtained after heat treatment of selected plants or plant material is provided. The selected plants accumulate metal from the platinum group (platinoids). The compositions can be used to produce catalysts for performing various organic synthesis reactions. 1Peltandra virginicaCucumis sativusLepidium sativumElodea canadensisSpinacia oleraceaEicchornia crassipesMedicago sativaZea maysSinapis albaBrassica junceaHordeum vulgareUrtica dioicaPhacelia tanacetifoliaRaphanus sativusLolium perenneLolium multiflorumSetaria verticillataNicotiana tabacumSinapis albaBrassica junceaLolium multiflorum. A method of performing organic synthesis reactions utilizing a composition as a catalyst , the composition comprising a metal catalyst originating after acid treatment of ashes obtained after heat treatment of a plant or part of a plant belonging to one of the genera chosen from green arrow arum () , cucumber () , garden cress () , Canadian pondweed () , spinach () , water hyacinth () , alfalfa () , maize () , white mustard () , brown mustard () , barley () , nettle () , lacy phacelia () , radish () , perennial rye-grass () , Italian rye-grass () , hooked bristlegrass () and tobacco () , preferably white mustard () , brown mustard () , Italian rye-grass () ,said plant having accumulated at least one of the platinoids chosen from platinum, palladium, osmium, iridium, ruthenium, rhodium, preferably platinum (Pt), palladium (Pd) or rhodium (Rh),the metal catalyst comprising metal or metals of which are chosen from the metals originating from said plant, and the metal or metals of which present in the composition originate exclusively from the plant before calcination and preferably without the addition of metal coming from an origin other than said plant.2. The method according to characterized in that the heat treatment of a plant or part of a plant is carried out in air.3. The method according to characterized in that the heat ...

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Номер записи: 94
23-05-2019 дата публикации

CATALYST AND ITS USE FOR THE SELECTIVE HYDRODESULFURIZATION OF AN OLEFIN CONTAINING HYDROCARBON FEEDSTOCK

Номер: US20190151836A1
Автор: BHAN Opinder Kishan, KOMAR David Andrew
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A catalyst and its use for selectively desulfurizing sulfur compounds present in an olefin-containing hydrocarbon feedstock to very low levels with minimal hydrogenation of olefins. The catalyst comprises an inorganic oxide substrate containing a nickel compound, a molybdenum compound and optionally a phosphorus compound, that is overlaid with a molybdenum compound and a cobalt compound. The catalyst is further characterized as having a bimodal pore size distribution with a large portion of its total pore volume contained in pores having a diameter less than 250 angstroms and in pores having a diameter greater than 1000 angstroms. 1. A process for selectively hydrodesulfurizing sulfur compounds contained in an olefin-containing hydrocarbon feedstock with minimal hydrogenation of olefins , which process comprises:contacting in a reactor under selective hydrodesulfurization conditions said olefin-containing hydrocarbon feedstock with a calcined catalyst particle made by calcining a shaped particle of a mixture comprising an inorganic oxide support material, molybdenum trioxide and a nickel compound to provide a calcined shaped particle;wherein said calcined shaped particle is further overlaid with a cobalt compound and a molybdenum compound and is subjected to a further calcination step to produce said calcined catalyst particle, said calcined catalyst particle being characterized by having a bimodal pore size distribution with at least 20% of the total pore volume being in pores having a diameter less than 250 angstroms and at least 10% of the total pore volume being in pores having a diameter greater than 1000 angstroms.212. The process as recited in claim , wherein said catalyst has a molybdenum content of from 9 wt % to 23 wt % , a cobalt content of from 2 wt % to 8 wt % , a nickel content of from 0.5 wt % to 2 wt % , and a phosphorus content of from 0.1 wt % to 3.5 wt % , each of said percentages calculated as the element.313. The process as recited in claim , ...

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Номер записи: 95
24-06-2021 дата публикации

Catalyst for oxidative dehydrogenation, method of preparing catalyst, and method of performing oxidative dehydrogenation using catalyst

Номер: US20210187485A1
Автор: Dae Heung Choi, Dong Hyun Ko, Jun Kyu Han, Kyong Yong Cha, Myung Ji Suh, Sun Hwan Hwang, Ye Seul Hwang
Принадлежит: LG Chem Ltd

Provided is a catalyst for oxidative dehydrogenation, a method of preparing the catalyst, and a method of performing oxidative dehydrogenation using the catalyst. The catalyst for oxidative dehydrogenation has improved durability and fillability by including a porous support coated with a metal oxide (AB 2 O 4 ) according to Equation 1: X wt %+ Y wt %=100 wt %,  <Equation 1> wherein X is a content of AB 2 O 4 and is 5 or more and less than 30, and Y is a content of the porous support and is more than 70 and 95 or less, wherein the metal oxide exhibits activity during oxidative dehydrogenation. Therefore, when the catalyst is used in oxidative dehydrogenation of butene, the conversion rate of butene and the selectivity and yield of butadiene may be greatly improved.

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Номер записи: 96
30-05-2019 дата публикации

CORE/SHELL CATALYST PARTICLES AND METHOD OF MANUFACTURE

Номер: US20190160427A1
Автор: Deeba Michel, Gu Yunlong, Leung Emi, LUO Tian
Принадлежит: BASF CORPORATION

The invention provides an automotive catalyst composite effective for abating carbon monoxide, hydrocarbons, and NOx emission in an automotive exhaust gas stream, which includes a catalytic material on a carrier, the catalytic material including a plurality of core-shell support particles comprising a core and a shell surrounding the core, the core including a plurality of particles having a primary particle size distribution dof up to about 5 μm, wherein the core particles comprise particles of one or more metal oxides, the shell including nanoparticles of one or more metal oxides, wherein the nanoparticles have a primary particle size distribution d90 in the range of about 5 nm to about 1000 nm (1 μm), and one or more platinum group metals (PGMs) on the core-shell support. The invention also provides an exhaust gas treatment system and related method of treating exhaust gas utilizing the catalyst composite. 1. An automotive catalyst composite comprising:a catalytic material on a carrier, the catalytic material comprising a plurality of core-shell support particles comprising a core and a shell surrounding the core, and one or more platinum group metals (PGMs) on the core-shell support,{'sub': '90', 'wherein the core comprises a plurality of particles having a primary particle size distribution dof up to about 5 μm, wherein the core particles comprise particles of one or more metal oxides; and'}{'sub': '90', 'wherein the shell comprises nanoparticles of one or more metal oxides, wherein the nanoparticles have a primary particle size distribution din the range of about 5 nm to about 1000 nm (1 μm); and'}wherein the catalytic material is effective for abating carbon monoxide, hydrocarbons, and NOx emission in an automotive exhaust gas stream.2. The automotive catalyst composite of claim 1 , wherein the shell has a thickness in the range of about 1 to about 10 μm claim 1 , or wherein the shell has a thickness of about 10 to about 50% of an average particle diameter of ...

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Номер записи: 97
21-05-2020 дата публикации

VANADIUM-BASED CATALYST AND PREPARATION METHOD THEREFOR

Номер: US20200156045A1
Автор: DONG Tianlei, He Jian, TIAN Xianguo, Wei Shixin, Xie Tianming, YIN Huiqin
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A vanadium-based catalyst comprises an active phase carried on a carrier. The active phase comprises vanadium oxide, potassium sulfate, sodium sulfate, and assistants. The carrier comprises ultra-large-pore silicon dioxide and diatomite, the average pore size of the ultra-large-pore silicon dioxide ranges from 100 nm to 500 nm, and the diatomite is a refined diatomite having a silicon dioxide content of higher than 85% after refinement. The preparation method for the vanadium-based catalyst comprises: 1) mixing potassium vanadium and potassium hydroxide, and allowing a prepared mixed solution and sulfuric acid to carry out a neutralization reaction; and 2) mixing a neutralization reaction product in step 1) with the carrier and sodium sulfate, and carrying out rolling, band extrusion, drying and roasting to prepare the vanadium-based catalyst, assistant compounds being added in step 1) and/or step 2). 1. A vanadium-based catalyst , comprising: an active phase loaded on a carrier , wherein the active phase comprises vanadium oxide , potassium sulfate , sodium sulfate , and an auxiliary agent , and the carrier comprises an ultra-large-pore silica and a diatomite , wherein the ultra-large-pore silica has an average pore diameter ranging from 100 to 500 nm , and the diatomite is a purified diatomite having a silica content of more than 85%.2. The vanadium-based catalyst according to claim 1 , wherein the ultra-large-pore silica has an average pore diameter ranging from 150 to 400 nm.3. The vanadium-based catalyst according to claim 1 , wherein the active phase is present in an amount ranging from 30% to 40% by weight claim 1 , and the carrier is present in an amount ranging from 60% to 70% by weight.4. The vanadium-based catalyst according to claim 1 , wherein based on a total weight of the vanadium-based catalyst claim 1 , vanadium oxide is present in an amount ranging from 6.5% to 8.5% by weight; a molar ratio of potassium element to vanadium element is (2.5-4.0):1; ...

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Номер записи: 98
29-09-2022 дата публикации

METHANE TO METHANOL CONVERSION

Номер: US20220306560A1
Автор: Sim W.J. Frank
Принадлежит:

Single iron atoms embedded in graphene can catalyse the conversion of methane into methanol at room temperature. Dependent upon the flow of gas from the well, a reactor vessel will be built and housed in a building heated by the raw gas to a temperature of seventy degrees Fahrenheit. This catalyst is carried on a bed of zeolite which will remove nitrogen and nitrogen compounds in adsorption process, as well as some sulphur and a good percentage of carbon dioxide. Iron—nitrogen—carbon (Fe—N—C) acts as the most satisfactory alternatives to platinum for the oxygen reduction reaction (ORR). 1. A method for converting methane into methanol using an oxidizing agent and a catalyst of single iron atoms embedded in graphene.2. The method according to wherein the method is carried out at room temperature.3. The method according to wherein the method is carried out at a pressure less than three bars.4. The method according to wherein the method is carried out at a temperature in the range 21 to 30 degrees C. claim 1 ,5. The method according to wherein the oxidizing agent is pure oxygen.6. The method according to wherein the oxygen expands as it vaporizes from storage to provide sufficient line pressure to blend the oxygen required.7. The method according to wherein the oxygen is fed to the fixed bed reactors from cryogenic storage claim 6 , vaporized claim 6 , and heated with an electric line heater.8. The method according to wherein the supply gas is separated using molecular sieve separations.9. The method according to wherein the catalyst is carried on a bed of zeolite which removes nitrogen and nitrogen compounds in adsorption process claim 1 , as well as some sulphur and a good percentage of carbon dioxide.10. The method according to wherein the catalyst is Fe—N—C and a further improvement of pristine Fe—N—C is obtained through using Ti3C2Tx MXene as a support.11. The method according to wherein the catalyst comprises a highly dispersed single FeN4 center anchored on ...

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Номер записи: 99
01-07-2021 дата публикации

CATALYST FOR OXIDATIVE DEHYDROGENATION OF BUTENE AND METHOD FOR PRODUCING THE SAME

Номер: US20210197179A1
Автор: BANG Jungup, Byun Young Chang, Cho Ara, Hwang Gyo Hyun, Song Cheolock
Принадлежит:

The present invention relates to a catalyst for oxidative dehydrogenation of butene and a method for producing the same. The catalyst for oxidative dehydrogenation of butene has a large amount of Mo—Bi phase acting as a reaction active phase on the surface, and therefore, can exhibit high catalytic activity, high conversion rate and high butadiene selectivity in the oxidative dehydrogenation of butene. 1. A catalyst for oxidative dehydrogenation of butene , which is represented by the following Composition Formula 1 , {'br': None, 'sub': a', 'b', 'c', 'd', 'e', 'f, 'MoBiCo(M1)(M4)O\u2003\u2003[Composition Formula 1]'}, 'wherein a surface composition of the catalyst measured by X-ray photoelectron spectroscopy, a molar content of bismuth (Bi) is higher than a molar content of cobalt (Co),'}in Composition Formula 1, Mo is molybdenum, Bi is bismuth, Co is cobalt, O is oxygen,M1 is one or more Group 1 metal elements,M4 is one or more period 4 transition metal elements excluding cobalt (Co),a is from 9 to 25, b is from 0.5 to 2, c is from 1 to 10, d is from 0.01 to 1, e is from 0.5 to 5, andf is from 30 to 50.2. The catalyst for oxidative dehydrogenation of butene according to claim 1 , wherein the period 4 transition metal comprises at least one selected from the group consisting of titanium claim 1 , vanadium claim 1 , chromium claim 1 , manganese claim 1 , iron claim 1 , nickel claim 1 , copper claim 1 , and zinc.3. The catalyst for oxidative dehydrogenation of butene according to claim 1 , wherein the Group 1 metal comprises at least one selected from the group consisting of sodium claim 1 , potassium claim 1 , rubidium claim 1 , and cesium.4. The catalyst for oxidative dehydrogenation of butene according to claim 1 , wherein the catalyst satisfies the following Calculation Formula 1{'br': None, 'BARS/BART>6, \u2003\u2003[Calculation Formula 1]'}in Calculation Formula 1BARS is the molar content of bismuth/the molar content of cobalt on the catalyst surface, measured ...

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Номер записи: 100