Настройки

Укажите год
-

Небесная энциклопедия

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

Подробнее
-

Мониторинг СМИ

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

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год
Применить Всего найдено 8160. Отображено 100.
16-08-2012 дата публикации

Method and System For the Selective Oxidative Decarboxylation of Fatty Acids

Номер: US20120209049A1
Автор: Alexander Wurthmann, Bryan J. Holmes
Принадлежит: University of Vermont and State Agricultural College

Selective, radically initiated oxidative decarboxylation may produce low viscosity renewable fuels from biologically derived fats and oils. Fatty acids and triglycerides may be decarboxylated using oxidants at a water/oil interface. The oxidants may be produced using photo-Fenton reagents. The reaction advantageously can be carried out at room temperature and pressure and has fewer unwanted byproducts than traditional decarboxylation techniques.

Подробнее
Номер записи: 1
20-12-2012 дата публикации

Hydrothermal hydrocatalytic treatment of biomass

Номер: US20120317873A1
Автор: Glenn Charles Komplin, John Anthony Smegal, Joseph Broun Powell, Kimberly Ann Johnson
Принадлежит: Shell Oil Co

A method of hydrothermal hydrocatalytic treating biomass is provided. Lignocellulosic biomass is treated with a digestive solvent to form a pretreated biomass containing soluble carbohydrates. The pretreated biomass is contacted, with hydrogen at a temperature in the range of 150° C. to less than 300° C. in the presence of a pH buffering agent and a supported hydrogenolysis catalyst containing (a) sulfur, (b) Mo or W, and (c) Co, Ni or mixture thereof, incorporated into a suitable support, to form a plurality of oxygenated hydrocarbons.

Подробнее
Номер записи: 2
21-03-2013 дата публикации

AMORPHOUS TRANSITION METAL SULPHIDE FILMS OR SOLIDS AS EFFICIENT ELECTROCATALYSTS FOR HYDROGEN PRODUCTION FROM WATER OR AQUEOUS SOLUTIONS

Номер: US20130068613A1
Автор: HU Xile, Merki Daniel, Vrubel Heron
Принадлежит: ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)

The present invention relates to amorphous transition metal sulphides as electrocatalysts for hydrogen production from water or aqueous solutions and use thereof in electrodes and electrolysers. 1. Use of amorphous transition metal sulphide films or solids as electrocatalysts for the reduction of proton to form H.2. The use of amorphous transition metal sulphide films or solids of claim 1 , wherein the transition metal sulphide is of formula MS claim 1 , where M is the transition metal and x is in the range 1.5 to 3.5.3. The use of amorphous transition metal sulphide films or solids of claim 1 , wherein the transition metal is selected from the group comprising Mo claim 1 , W claim 1 , Fe claim 1 , Cr claim 1 , Cu claim 1 , Ni.4. The use of amorphous transition metal sulphide films or solids of claim 1 , wherein the transition metal sulphide is MoS claim 1 , MoS claim 1 , WSor WS.5. The use of amorphous transition metal sulphide films or solids of claim 1 , wherein the amorphous transition metal sulphide films or solids are further doped with at least one metal selected from the group comprising Ni claim 1 , Co claim 1 , Mn claim 1 , Cu claim 1 , Fe.6. The use of amorphous transition metal sulphide films or solids of claim 5 , wherein the amorphous transition metal sulphide films or solids are further doped with Ni.7. The use of amorphous transition metal sulphide films or solids of claim 1 , wherein His originated from water or aqueous solutions.8. An electrode for use in the production of hydrogen gas from water or aqueous solutions comprising an electrode substrate claim 1 , wherein the amorphous transition metal sulphide films or solids of are deposited on said electrode substrate.9. The electrode of claim 8 , wherein the amorphous transition metal sulphide films or solids are selected from the group comprising amorphous MoSfilm or solid claim 8 , amorphous MoSfilm or solid claim 8 , amorphous WSfilm or solid claim 8 , and amorphous WSfilm or solid.10. The ...

Подробнее
Номер записи: 3
04-04-2013 дата публикации

PHOTOCATALYST COMPOSITION OF MATTER

Номер: US20130082009A1
Автор: "OKeefe William", Sasges Michael
Принадлежит: TROJAN TECHNOLOGIES

There is described a photocatalyst composition of matter comprising a support material. A surface of the support material configured to comprise: (i) a first catalytic material for catalyzing the conversion of HO to Hand O, and (ii) a second catalytic material catalyzing reaction of hydrogen with a target compound. The photocatalyst composition of matter can be used to treat an aqueous fluid containing a target chemical compound, for example, by a process comprising the steps of: (i) contacting the aqueous fluid with the above-mentioned photocatalyst composition of matter; (ii) contacting the aqueous fluid with radiation during Step (i); (iii) catalyzing the conversion of water in the aqueous fluid to Hand Owith the first catalytic material; and (iv) catalyzing reaction of the target chemical compound in the aqueous fluid with hydrogen from Step (iii) in the presence of the second catalytic material to produce a modified chemical compound. 1. A photocatalyst composition of matter comprising a support material , a surface of the support material configured to comprise: (i) a first catalytic material for catalyzing the conversion of HO to Hand O , and (ii) a second catalytic material catalyzing reaction of hydrogen with a target compound.2. The photocatalyst composition of matter defined in claim 1 , wherein the second catalytic material catalyzes reaction of hydrogen with a target organic compound.37-. (canceled)8. The photocatalyst composition of matter defined in claim 1 , wherein the support material comprises a particulate support material.9. (canceled)10. The photocatalyst composition of matter defined in claim 1 , wherein the support material comprises a transition metal oxide having a band gap in the range of from about 1.23 to about 6.7 eV.1112-. (canceled)13. The photocatalyst composition of matter defined in claim 1 , wherein the support material comprises a non-photocatalytically active material.1418-. (canceled)19. The photocatalyst composition of matter ...

Подробнее
Номер записи: 4
23-05-2013 дата публикации

ACTIVATION OF DUAL CATALYST SYSTEMS

Номер: US20130130893A1
Автор: Helton Terry E., Hilbert Timothy L., III William J., Kalyanaraman Mohan, McCarthy Stephen J., Oliveri Christopher G., Tracy, Umansky Benjamin S.
Принадлежит: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY

Methods are provided for liquid phase activation of dewaxing and/or hydrofinishing catalysts that include a molecular sieve or other acidic crystalline support. The methods are compatible with activating the catalysts as part of a catalyst system that also includes a hydrotreating catalyst. 1. A method for activating a catalyst system , comprising:exposing a catalyst system to a first liquid activation feed under effective reducing conditions for at least about 24 hours, the catalyst system including at least one catalyst that comprises a Group VIII non-noble metal on an amorphous support and at least one catalyst that comprises a Group VIII noble metal on an acidic support, the effective reducing conditions including a hydrogen partial pressure of at least about 500 psig (145 MPag) and a temperature of at least about 200° C.; andexposing the catalyst system to a second liquid activation feed under effective sulfiding conditions.2. The method of claim 1 , wherein the catalyst with an amorphous support is a hydrotreating catalyst.3. The method of claim 1 , wherein the catalyst comprising a Group VIII noble metal on an acidic support comprises a dewaxing catalyst with Pt claim 1 , Pd claim 1 , or a combination thereof on a support including a molecular sieve.4. The method of claim 1 , wherein the catalyst comprising a Group VIII noble metal on an acidic support comprises a hydrofinishing catalyst with Pt claim 1 , Pd claim 1 , or a combination thereof on a support comprising an M41S family support.5. The method of claim 1 , wherein the catalyst system is provided in a single reactor.6. The method of claim 1 , wherein first liquid activation feed comprises a distillate boiling range feed with a sulfur content of less than about 100 wppm and a water content of less than about 100 wppm.7. The method of claim 6 , wherein first liquid activation feed has a nitrogen content of less than about 250 wppm.8. The method of claim 1 , wherein the second liquid activation feed ...

Подробнее
Номер записи: 5
06-06-2013 дата публикации

EXHAUST GAS PURIFICATION CATALYST AND PRODUCTION METHOD THEREFOR, AND METHOD FOR PURIFYING NITROGEN OXIDE IN EXHAUST GAS

Номер: US20130142719A1
Автор: IMADA NAOMI, KAI KEIICHIRO, Kato Yasuyoshi
Принадлежит: BABCOCK-HITACHI KABUSHIKI KAISHA

An exhaust gas purification catalyst is made as a composition comprising titanium oxide (TiO), aluminum sulfate (Al(SO)), an oxide of vanadium (V), and an oxide of molybdenum (Mo) and/or tungsten (W), wherein on titanium oxide having sulfate ions and aluminum ions adsorbed thereon obtained by making contact with aluminum sulfate at more than 1 wt % and not more than 6 wt % relative to titanium oxide in the presence of water, an oxo acid salt of vanadium or a vanadyl salt and an oxo acid or an oxo acid salt of molybdenum and/or tungsten are supported in a proportion of more than 0 atom % and not more than 3 atom %, respectively. By this, the degradation of catalyst performance can be suppressed even with exhaust gas containing potassium compounds at a high concentration in combustion ash. 1. An exhaust gas purification catalyst having a composition comprising:{'sub': '2', 'titanium oxide (TiO);'}{'sub': 2', '4', '3, 'aluminum sulfate (Al(SO));'}an oxide of vanadium (V); andan oxide of molybdenum (Mo) and/or tungsten (W), whereinon titanium oxide having sulfate ions and aluminum ions adsorbed thereon obtained by making contact with aluminum sulfate at more than 1 wt % and not more than 6 wt % relative to titanium oxide in the presence of water, an oxo acid salt of vanadium or a vanadyl salt and an oxo acid or an oxo acid salt of molybdenum and/or tungsten are supported in a proportion of more than 0 atom % and not more than 3 atom %, respectively.2. A production method for an exhaust gas purification catalyst comprising titanium oxide (TiO) , aluminum sulfate (Al(SO)) , an oxide of vanadium (V) , and an oxide of molybdenum (Mo) and/or tungsten (W) , comprisingsupporting an oxo acid salt of vanadium or a vanadyl salt and an oxo acid or an oxo acid salt of molybdenum and/or tungsten in a proportion of more than 0 atom % and not more than 3 atom %, respectively, onto titanium oxide having sulfate ions and aluminum ions adsorbed thereon obtained by making contact with ...

Подробнее
Номер записи: 6
04-07-2013 дата публикации

PROCESS FOR THE HYDROCONVERSION OF A LOW QUALITY HYDROCARBONACEOUS FEEDSTOCK

Номер: US20130172638A1
Автор: Borremans Didier, Dath Jean-Pierre, Hortmann Kai
Принадлежит: TOTAL RAFFINAGE MARKETING

The invention concerns a process for upgrading lower quality carbonaceous feedstock using a slurry catalyst composition. The use of particular organometallic compounds as precursors for the dispersed active catalyst allows for reduced coke formation. 2. Process according to , wherein each of Cor Cis a C5-C8 monocyclic polyene ligand comprising from 0 to 5 substituents R , each substituent R being the same of different , R being defined as in .3. Process according to , wherein each of Cand Cis a cyclopentadienyl ligand comprising from 0 to 5 substituents R , each substituent R being the same or different , R being defined as in .5. Process according to claim 1 , wherein -L is selected from Hydride (-L=—H) claim 1 , Halide (-L=—F claim 1 , —Cl claim 1 , —Br claim 1 , —I) claim 1 , cyanide (-L=—CN) claim 1 , Alkoxide (-L=—OR) claim 1 , Thiolate (-L=—SR) claim 1 , Amide (-L=—NR) claim 1 , Phosphide (-L=—PR) claim 1 , Alkyl (-L=—CHR or other) claim 1 , Alkenyl (-L=—CHCHR) claim 1 , Alkynyl (-L=—CCR) claim 1 , Acyl (-L=—COR) claim 1 , Isocyanide (-L=—CNR) claim 1 , Nitrosyl (-L=—NO) claim 1 , Diazenide (-L=—NNR) claim 1 , Imide (-L=═NR) claim 1 , L=-ERor -EX(with E=Si claim 1 , Ge claim 1 , Sn) claim 1 , -L=—PR claim 1 , —PX claim 1 , —AsR claim 1 , —SbR claim 1 , amines claim 1 , L=ER(with E=O claim 1 , S claim 1 , Se claim 1 , Te) claim 1 , where X is an halogen atom claim 1 , R is a C1-C8 claim 1 , preferably a C1-C6 claim 1 , linear or branched claim 1 , alkyl claim 1 , alkenyl Group or a C3-C8 alicyclic or aromatic group.6. Process according to claim 1 , wherein M is selected from Group IIA claim 1 , IIB claim 1 , IIIB claim 1 , IVB claim 1 , VB claim 1 , VIIB claim 1 , VIIB or VIII of the periodic table of the elements.7. Process according to claim 1 , wherein M is selected from Fe claim 1 , V or Mo.8. Process according to claim 1 , wherein said precursor composition furthermore comprises at least one surfactant and/or a least one promoter.9. Process according to ...

Подробнее
Номер записи: 7
22-08-2013 дата публикации

CATALYTIC PURIFICATION OF GASES

Номер: US20130212944A1
Автор: Bradshaw Heather, Krause Outi, Ronkkonen Ella, Simell Pekka, Solla Anu, Stephenson Hazel
Принадлежит:

A zirconium-based mixed oxide or zirconium-based mixed hydroxide which is capable of (a) at least 90% v/v conversion of naphthalene at atmospheric pressure at a temperature in the range 600-700° C. using a residence time of about 0.3 seconds, and/or (b) providing an initial heat of adsorption of ammonia of greater than 150 kJ/mol when measured by ammonia flowing gas microcalorimetry. Also, a method for purifying gas produced from the gasification of carbonaceous materials, comprising the step of bringing the gas into contact with such mixed oxides or mixed hydroxides. 1. A zirconium-based mixed oxide or zirconium-based mixed hydroxide which is capable of (a) at least 90% v/v conversion of naphthalene at atmospheric pressure at a temperature in the range 600-700° C. using a residence time of about 0.3 seconds , and/or (b) providing an initial heat of adsorption of ammonia of greater than 150 kJ/mol when measured by ammonia flowing gas microcalorimetry.2. A mixed oxide or mixed hydroxide as claimed in which claim 1 , after hydrothermal treatment in 70% v/v steam in nitrogen at 700° C. for 85 hours claim 1 , is capable of at least 90% v/v conversion of naphthalene at atmospheric pressure at a temperature in the range 600-700° C. using a residence time of about 0.3 seconds.3. A mixed oxide or mixed hydroxide as claimed in having a total pore volume as measured by nitrogen porosimetry of at least 0.25 cm/g but less than 1.0 cm/g after calcination at 800° C. for 2 hours.4. A mixed oxide or mixed hydroxide as claimed in having a total pore volume as measured by nitrogen porosimetry of greater than 0.15 cm/g but less than 1.0 cm/g after calcination at 1000° C. for 2 hours.5. A mixed oxide or mixed hydroxide as claimed in claim 1 , additionally comprising cerium and/or lanthanum.6. A mixed oxide or mixed hydroxide as claimed in comprising:(a) at least 60 wt % zirconia and/or zirconium hydroxide,(b) 10-25 wt % ceria and/or cerium hydroxide, and(c) 1-10 wt % lanthana and/or ...

Подробнее
Номер записи: 8
22-08-2013 дата публикации

METHOD FOR PROCESSING A SULFUR-CONTAINING GAS AND A HYDROGENATION CATALYST USED THEREFOR

Номер: US20130216462A1
Автор: LIU Aihua, Liu Jianli, TAO Weidong, Xu Jinshan, Xu Xingzhong, ZHANG Yiling
Принадлежит: CHINA PETROLEUM & CHEMICAL CORPORATION

The present invention relates to a method for processing a sulfur-containing gas and a hydrogenation catalyst used therefor. Said method comprises introducing the sulfur-containing gas into the tail gas hydrogenation unit of a sulfur recovery device, processing it with the hydrogenation catalyst of the present invention, absorbing the hydrogenated tail gas with a solvent and then regenerating, the regenerated hydrogen sulfide being recycled to the Claus unit to recover sulfur, the clean tail gas being incinerated in an incinerator to be discharged after reaching the standards. Said sulfur-containing gas comprises from 0 to 6 vol. % of sulfur dioxide and from 0 to 3 vol. % of oxygen, and has a temperature of from 100 to 200° C. The hydrogenation catalyst of the present invention comprises from 0.5 to 3 wt. % of an active component nickel oxide, from 1 to 4 wt. % of an active component cobalt oxide, from 8 to 20 wt. % of an active component molybdenum oxide or tungsten oxide, from 1 to 5 wt. % of a deoxidation auxiliary agent, from 10 to 40 wt. % of TiO2, the balance being γ-Al2O3, based on the weight of the catalyst. 1. A hydrogenation catalyst , characterized in that the catalyst comprises from 0.5 to 3 wt. % of an active component nickel oxide; from 1 to 4 wt. % of an active component cobalt oxide; from 8 to 20 wt. % of an active component molybdenum oxide or tungsten oxide; from 1 to 5 wt. % of a deoxidation auxiliary agent selected from one or more of ferrous sulfate , ferric nitrate and ferric sulfate; from 10 to 40 wt. % of TiO , the balance being γ-AlO , based on the weight of the catalyst , wherein TiOand γ-AlOare added in the form of titanium-aluminum compound dry colloid.2. The hydrogenation catalyst according to claim 1 , characterized in that the deoxidation auxiliary agent is ferrous sulfate.3. The hydrogenation catalyst according to claim 1 , characterized in that the catalyst comprises from 1.0 to 1.5 wt. % of an active component nickel oxide claim 1 , ...

Подробнее
Номер записи: 9
29-08-2013 дата публикации

Semiconductor photocatalyst for the photocatalytic reforming of biomass derivatives for hydrogen generation, and preparation and use thereof

Номер: US20130224105A1
Автор: Chengbo Li, Jiaxin Li, Lizhu Wu, Xubing Li, Zhijun Li
Принадлежит: Technical Institute of Physics and Chemistry of CAS

Disclosed are a semiconductor photocatalyst for the photocatalytic reforming of biomass derivatives for hydrogen generation, and preparation and use thereof. The semiconductor photocatalyst has the atomic composition ratio of M˜N-Ax; wherein M˜N are IIB group elements to VIA group elements, or IIIA group elements to VA group elements, A being one element or more than two elements selected from the group consisting of cobalt, nickel, iron, copper, chromium, palladium, platinum, ruthenium, rhodium, iridium and silver; and 0.02%≦x≦1.0%. The method of in-situ preparation of the highly effective semiconductor photocatalyst and catalytically reforming biomass derivatives for hydrogen generation by driving photoreaction with visible light via quantum dots is simple, fast, highly effective, inexpensive and practical. The in situ reaction can occur in sunlight without the need of harsh conditions such as calcination.

Подробнее
Номер записи: 10
19-09-2013 дата публикации

Photochemical Processes and Compositions for Methane Reforming Using Transition Metal Chalcogenide Photocatalysts

Номер: US20130239469A1
Автор: Chianelli Russell R., Torres Brenda
Принадлежит: BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM

The present invention provides a transition metal chalcogenide photocatalyst, a reactor using the transition metal chalcogenide photocatalyst, and methods of making and using a transition metal chalcogenide photocatalyst for reforming CHwith CO. 1. A photocatalyst for reforming methane with COcomprising:{'sub': 4', '2, 'a transition metal chalcogenide photocatalyst chemically stable in an environment comprising CHand CO, wherein the transition metal chalcogenide photocatalyst comprises Ti, V, Cr, Mn, Fe, Co, Ni, Zr, Nb, Mo, Tc, Ru, Rh, Pt, Hf, Ta, W, Re, Os, Ir, Pt or combinations thereof.'}2. The photocatalyst of claim 1 , wherein the transition metal chalcogenide photocatalyst comprises TiS claim 1 , VS claim 1 , CrS claim 1 , MnS claim 1 , FeS claim 1 , CoS claim 1 , NiS claim 1 , ZrS claim 1 , NbS claim 1 , MoS claim 1 , TcS claim 1 , RuS claim 1 , RhS claim 1 , PtS claim 1 , HfS claim 1 , TaS claim 1 , WS claim 1 , ReS claim 1 , OsS claim 1 , IrS claim 1 , PtSor combinations thereof.3. The photocatalyst of claim 1 , wherein the transition metal chalcogenide photocatalyst comprises CoSand MoS; CoSand WS; NiSand MoS; or NiSand WS.4. The photocatalyst of claim 1 , wherein the transition metal chalcogenide photocatalyst is supported on a conductive inert support optionally consisting of carbon having a surface area exceeding about 120 g/m.5. A gas reforming electrode for reforming CHwith COcomprising:a conductive web; and{'sub': 4', '2, 'a transition metal chalcogenide photocatalyst applied on at least one face of the conductive web and is chemically stable in an environment comprising CHand CO.'}6. The gas reforming electrode of claim 5 , wherein said conductive web is a carbon cloth.7. The gas reforming electrode of claim 5 , wherein said catalyst is mixed with an optionally perfluorinated hydrophobic binder.8. The gas reforming electrode of claim 5 , wherein the transition metal chalcogenide photocatalyst comprises Ti claim 5 , V claim 5 , Cr claim 5 , Mn claim ...

Подробнее
Номер записи: 11
19-09-2013 дата публикации

COMPOSITE CATALYTIC MEMBRANE APPLIED TO CATALYTIC ESTERIFICATION AND PREPARATION METHOD THEREOF

Номер: US20130244861A1
Автор: Cheng Yu, He Benqiao, Li Jianxin, Shi Wenying
Принадлежит: TIANJIN POLYTECHNIC UNIVERSITY

A composite catalytic membrane applied to catalytic esterification and preparation method thereof are provided. The composite catalytic membrane is porous, and includes nonwoven fabric as base membrane and catalytic coating which is formed on the surface of nonwoven fabric and in the pores and gaps between the nonwoven fabric fibers. The catalytic coating uses solid acid as catalyst and polymer or modified sulfonated polymer as membrane-forming material. The membrane is formed by coating or immersion method, and the composite catalytic membrane is obtained by cross-linking after forming. The greenization and high efficiency of catalytic esterification and preparation of biodiesel can be achieved owing to the microporous structure and huge specific surface area of the composite catalytic membrane. The composite catalytic membrane has high mechanical strength, good reproducibility and stability and easily enables continuous repetitive production of catalytic esterification. The process is simple and easy to control and scale-up. 1. A composite catalytic film for catalyzing esterification , wherein the film comprises a porous structure with nonwoven fabric as a base membrane and with a catalytic coating on a surface of the fabric as well as in gaps between the fibers , and wherein said coating uses a solid acid as a catalyst and a modified sulfonated polymer as a film-forming material.2. The composite catalytic film for catalyzing esterification according to claim 1 , wherein said modified sulfonated polymer is derived from a precursor which is modified by sulfonation wherein a degree of substitution of the sulfonated group is greater than 0 and less than or equal to 50% claim 1 , and wherein said polymer is at least one of polyvinyl alcohol claim 1 , polyethylene-vinyl alcohol claim 1 , polyvinylidene fluoride claim 1 , polyacrylonitrile claim 1 , cellulose acetate claim 1 , polysulfone and polyether sulfone.3. The composite catalytic film for catalyzing ...

Подробнее
Номер записи: 12
24-10-2013 дата публикации

Process for producing olefin oxide

Номер: US20130281722A1
Автор: Anusorn Seubsai, Selim Senkan, Yoshihiko Ohishi
Принадлежит: Sumitomo Chemical Co Ltd

A process for producing an olefin oxide which comprises reacting an olefin with oxygen in the presence of a catalyst comprising a copper oxide and a tellurium oxide.

Подробнее
Номер записи: 13
07-11-2013 дата публикации

DIRECT CONVERSION OF OLEFIN TO OLEFIN OXIDE BY MOLECULAR OXYGEN

Номер: US20130296586A1
Автор: Knapp Bjeren Carlos Gustavo, Ohishi Yoshihiko, Senkan Selim, Seubsai Anusorn
Принадлежит: Sumitomo Chemical Company, Limited

The present invention relates to a direct conversion of olefin to olefin oxide, which are important and versatile intermediates used in the production of a large variety of valuable consumer products such as polyurethane foams, polymers, alkylene glycol, cosmetics, food emulsifiers and as fumigants and insecticides. More specifically, the present invention provides a process for producing an olefin oxide which comprises reacting an olefin with oxygen in the presence of a halogen compound additive and a catalyst comprising copper, ruthenium or both thereof.

Подробнее
Номер записи: 14
19-12-2013 дата публикации

BISMUTH OXYHALIDE COMPOUNDS USEFUL AS PHOTOCATALYSTS

Номер: US20130334145A1
Автор: Gnayem Hani, Sasson Yoel, Shenawi-Khalil Sanaa
Принадлежит: YISSUM Research Development Company of the Hebrew University of Jerusalem LTD.

Mixed chloride-bromide bismuth oxyhalide compounds, with the molar ratio chloride:bromide being equal to or greater than 1:1, in the form of microspheres exhibiting flower-like surface morphology, are disclosed. Processes for preparing the compounds, formulations of the compounds and a method for purifying water using said compounds are also disclosed. 1) Mixed chloride-bromide bismuth oxyhalide compounds , with the molar ratio chloride:bromide being equal to or greater than 1:1 , in the form of microspheres exhibiting flower-like surface morphology , said microspheres being characterized by the presence of individual thin sheets arranged radially in a petal-like manner , wherein two or more adjacent individual thin sheets are interconnected to form cells or channels which open onto the external surface of said microspheres.2) The mixed chloride-bromide bismuth oxyhalides according to having the formula BiOClBri claim 1 , wherein y is between 0.60 and 0.95.3) The mixed chloride-bromide bismuth oxyhalide compounds according to claim 2 , wherein y is between 0.70 and 0.95.4) A process for preparing mixed chloride-bromide bismuth oxyhalides claim 2 , comprising combining a bismuth source claim 2 , a chloride source and a bromide source in an acidic environment claim 2 , wherein the molar ratio chloride:bromide is equal to or greater than 1:1 claim 2 , forming a precipitate and collecting the solid thereby formed.5) A process according to claim 4 , wherein the pH of the acidic environment is less than 3.6) A process according to claim 4 , wherein the acidic environment is provided by means of an organic acid claim 4 , or an aqueous solution of an organic acid.7) A process according to claim 4 , comprising charging a reaction vessel with an acid claim 4 , dissolving the bismuth source in the acidic environment claim 4 , adding the chloride and bromide sources to the solution claim 4 , precipitating a product of the formula BiOClBriwherein y is from 0.6 and 0.95 claim 4 , ...

Подробнее
Номер записи: 15
19-12-2013 дата публикации

Low Temperature Sulphur Dioxide Oxidation Catalyst for Sulfuric Acid Manufacture

Номер: US20130336876A1
Автор: Gebhard Steven C., Srinivas Girish
Принадлежит:

Improved catalysts for oxidation of sulfur dioxide which are alkali metal-promoted vanadium catalysts which are further promoted by gold. Improved methods employing such catalyst for oxidation of sulfur dioxide and for manufacture of sulfuric acid. Improved methods for multiple step oxidation of sulfur dioxide in which the last oxidation step is carried out employing improved catalysts of this invention at temperatures lower than 400° C. 1. A method for the oxidation of SOwhich comprises the step of contacting a gas stream comprising SOand Oat temperatures between 275° C. and 450° C. with a catalyst comprising vanadium , one or more alkali metals and gold.2. The method of wherein the catalyst is a supported catalyst comprising 0.005-5 wt % of gold and the atomic ratio of total alkali metal to vanadium ranges from 0.1 to 10.34.-. (canceled)5. The method of wherein the catalyst is a supported catalyst comprising 0.01-1 wt % of gold claim 1 , 5-15 wt % vanadium and 5-30 wt % alkali metal.6. The method of wherein the catalyst further comprises a second promoter metal selected from aluminum claim 1 , magnesium claim 1 , yttrium claim 1 , lanthanum or mixtures thereof.7. The method of wherein the catalyst further comprises a second promoter metal (P2) selected from aluminum claim 1 , magnesium claim 1 , yttrium claim 1 , lanthanum or mixtures thereof and wherein the atomic ratio of P2:V ranges from 0.1:1 to 1:1.8. The method of wherein the catalyst further comprises a second promoter metal (P2) selected from aluminum claim 1 , magnesium claim 1 , yttrium claim 1 , lanthanum or mixtures thereof and wherein the second promoter is present in an amount ranging from 0.5 to 10 wt % in the catalyst.9. The method of wherein the catalyst is supported on silica claim 1 , alumina claim 1 , silica-alumina claim 1 , titania claim 1 , clay claim 1 , zeolite claim 1 , zirconia claim 1 , ceria claim 1 , cordierite claim 1 , mullite claim 1 , mullite-alumina claim 1 , or mixtures thereof. ...

Подробнее
Номер записи: 16
02-01-2014 дата публикации

MOLTEN SALT-TYPE OFF GAS PURIFICATION CATALYST AND OFF GAS PURIFICATION FILTER

Номер: US20140004012A1
Автор: Kitagawa Norikazu, Kubo Masahiro, Miyagawa Tatsurou, NAKAJIMA Takahiro, Suga Ryousuke
Принадлежит: Panasonic Corporation

A molten salt-type exhaust gas purification catalyst has, as a catalyst component, a first composite metal oxide of cesium and vanadium, and a sulfate containing cesium and an alkaline earth metal. 1. A molten salt-type exhaust gas purification catalyst comprising as a catalyst component , a first composite metal oxide of cesium and vanadium , and a sulfate containing cesium and an alkaline earth metal.2. The molten salt-type exhaust gas purification catalyst according to further comprising an oxide of copper as the catalyst component.3. The molten salt-type exhaust gas purification catalyst according to claim 2 , wherein the oxide of copper is a second composite metal oxide of copper and vanadium.4. The molten salt-type exhaust gas purification catalyst according to claim 2 , wherein the oxide of copper is a third composite metal oxide of copper claim 2 , vanadium claim 2 , and cesium.5. The molten salt-type exhaust gas purification catalyst according to claim 3 , wherein on a first layer made of the second composite metal oxide claim 3 , a second layer made of the sulfate containing cesium and an alkaline earth metal is superposed claim 3 , andan intermediate layer made of the first composite metal oxide and a fourth composite metal oxide of cesium, an alkaline earth metal and vanadium is formed in a region where the first layer and the second layer are in contact.6. The molten salt-type exhaust gas purification catalyst according to claim 3 , wherein a second layer made of the sulfate containing cesium and an alkaline earth metal is superposed on a first layer made of the second composite metal oxide claim 3 , andan intermediate layer made of the first composite metal oxide or a fourth composite metal oxide of cesium, an alkaline earth metal and vanadium is formed in a region where the first layer and the second layer are in contact.7. The molten salt-type exhaust gas purification catalyst according to claim 1 , wherein the first composite metal oxide is CsVO.8. ...

Подробнее
Номер записи: 17
02-01-2014 дата публикации

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

Номер: US20140005040A1
Автор: Mallikharjuna Rao KOMARNENI, Reshef Tenne, Uwe BURGHAUS, Yulia TSVERIN
Принадлежит: NORTH DAKOTA STATE UNIVERSITY RESEARCH FOUNDATION, Yeda Research and Development Co Ltd

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

Подробнее
Номер записи: 18
16-01-2014 дата публикации

SANITARY WARE

Номер: US20140017425A1
Автор: Amemori Hiroaki, Hino Takahiro, Ichiki Tomoyasu, Takano Satoshi, TOKUDOME Hiromasa, Yagi Shinichi
Принадлежит: TOTO LTD.

Disclosed is a sanitary ware including a photocatalyst layer that has a high level of water resistance and abrasion resistance while maintaining a good photocatalytic activity. The sanitary ware includes a glaze layer and a photocatalyst layer provided on the glaze layer. The photocatalyst layer is an oxide film that is a co-fired product of a precursor of titanium oxide and a precursor of zirconium oxide and contains 65 to 90% by mass of titanium oxide and 10 to 35% by mass of zirconium oxide. 1. A sanitary ware comprising a glaze layer and a photocatalyst layer provided on the glaze layer , whereinthe photocatalyst layer is an oxide film comprising a co-fired product of a precursor of titanium oxide and a precursor of zirconium oxide and contains 65 to 90% by mass of titanium oxide and 10 to 35% by mass of zirconium oxide.2. The sanitary ware according to claim 1 , wherein the content of titanium oxide is 65 to 85% by mass and the content of zirconium oxide is 15 to 35% by mass in the photocatalyst layer.3. The sanitary ware according to claim 1 , wherein photocatalyst layer has methylene blue decomposition index of 5 or more.4. The sanitary ware according to claim 1 , wherein photocatalyst layer has a thickness of 50 to 200 nm.5. The sanitary ware according to claim 1 , wherein the firing has been carried out at 700 to 800° C.6. The sanitary ware according to claim 1 , wherein the precursor of titanium oxide is a titanium alkoxide or a titanium chelate.7. The sanitary ware according to claim 1 , wherein the titanium alkoxide is represented by general formula Ti(OR)wherein OR represents a Calkoxy group claim 1 , acetyl acetonate claim 1 , or ethyl acetoacetate.8. The sanitary ware according to claim 7 , wherein the titanium alkoxide is one of or a mixture of two or more of substances selected from the group consisting of tetraethoxytitanium claim 7 , tetraisopropoxytitanium claim 7 , tetra-n-propoxytitanium claim 7 , tetrabutoxytitanium claim 7 , ...

Подробнее
Номер записи: 19
30-01-2014 дата публикации

STEAM RE-CALCINATION OF MIXED METAL OXIDE CATALYSTS

Номер: US20140031585A1
Автор: Xu Jinsuo
Принадлежит: Rohm and Haas Company

A process for producing a catalyst for the (amm)oxidation of alkanes comprises calcination of a crystalline mixed metal oxide catalyst partially or wholly in the presence of steam. 2. The process of further comprising: (c) grinding the re-calcined mixed metal oxide catalyst.3. The process of wherein the water vapor comprises from 0.01 to 100 volume percent claim 1 , based on the total volume of gas in the atmosphere.4. The process of wherein the water vapor comprises from 0.5 to 10 volume percent claim 1 , based on the total volume of gas in the atmosphere.5. The process of wherein the water vapor comprises from 1 to 3.5 volume percent claim 1 , based on the total volume of gas in the atmosphere.6. The process of wherein Z is Pd.7. The process of wherein X is Te.8. The process of wherein calcining the first catalyst is done in 2 stages claim 1 , wherein claim 1 , in the first stage claim 1 , the first catalyst is calcined in an inert or oxidizing environment at a temperature of from 100° C. to 400° C. claim 1 , for from 15 minutes to 40 hours claim 1 , and in a second stage the material from the first stage is calcined in a non-oxidizing environment at a temperature of from 400° C. to 650° C. for 0.1 to 25 hours.9. A process for the (amm)oxidation of alkanes claim 1 , the process comprising (amm)oxidizing an alkane in the presence of a final catalyst of .10. The process of wherein the calcined MMO solid first catalyst has an X-ray diffraction pattern showing the orthorhombic phase as the major crystal phase with main peaks with 2θ at 6.7° claim 1 , 7.8° claim 1 , 22.1° claim 1 , and 27.2°12. The process of wherein Z is Pd and X is Te.13. The process of wherein Z is Pd and X is Te. This application claims priority from provisional application Ser. No. 61/467,418, filed Mar. 25, 2011, which is incorporated herein by reference in its entirety.The present invention relates to mixed metal oxide (amm)oxidation catalysts.Mixed metal oxide (MMO) catalysts are well known for ...

Подробнее
Номер записи: 20
13-02-2014 дата публикации

Isomerization of light alpha-olefins to light internal olefins

Номер: US20140046110A1
Автор: Michael Hesse, Piotr Makarczyk, Stefan Iselborn
Принадлежит: BASF SE

The present invention relates to a process for isomerizing linear alpha-olefins having from 4 to 8 carbon atoms over a heterogeneous catalyst, wherein the catalyst comprises a hydrogenation metal and a selectivity promoter selected from among selenium and tellurium on a support, and also a process for preparing 1-olefins by a metathesis reaction of 2-olefins with ethene, wherein the 2-olefins are prepared by the above mentioned isomerization process.

Подробнее
Номер записи: 21
20-02-2014 дата публикации

METHOD OF FORMING SUPPORTED DOPED PALLADIUM CONTAINING OXIDATION CATALYSTS

Номер: US20140051567A1
Автор: MOHAJERI NAHID
Принадлежит: UNIVERSITY OF CENTRAL FLORIDA RESEARCH FOUNDATION, INC.

A method of forming a supported oxidation catalyst includes providing a support comprising a metal oxide or a metal salt, and depositing first palladium compound particles and second precious metal group (PMG) metal particles on the support while in a liquid phase including at least one solvent to form mixed metal comprising particles on the support. The PMG metal is not palladium. The mixed metal particles on the support are separated from the liquid phase to provide the supported oxidation catalyst. 1. A method of forming a supported oxidation catalyst , comprising:providing a support comprising a metal oxide or a metal salt, anddepositing first palladium compound particles and second precious metal group (PMG) metal particles on said support while in a liquid phase including at least one solvent to form mixed metal comprising particles on said support, wherein said second PMG metal particles is not palladium, andseparating said mixed metal comprising particles on said support from said liquid phase to provide said supported oxidation catalyst.2. The method of claim 1 , wherein said first palladium compound particles comprise palladium oxide claim 1 , palladium hydroxide claim 1 , or a palladium salt.3. The method of claim 1 , wherein said second PMG metal particles are nanosized and a relative concentration ratio of said second PMG metal particles to said first palladium compound particles ranges from 1:10 to 1:25 by weight.4. The method of claim 1 , wherein said second PMG metal particles comprise gold claim 1 , silver or platinum.5. The method of claim 1 , wherein said separating comprises drying and said depositing comprises co-depositing said first palladium compound particles and said second PMG metal particles using a precursor for said first palladium compound particles and a precursor for said second PMG metal particles.6. The method of claim 5 , wherein said co-depositing comprises depositing said first palladium compound particles after depositing said ...

Подробнее
Номер записи: 22
27-02-2014 дата публикации

Catalyst with Supplement Component for Hydroprocessing of Bio-feedstock

Номер: US20140058182A1
Автор: Lehmann Thomas, Sandstede Gert
Принадлежит: Aggregate Energy, LLC

A process for hydrogenation of oxygen-containing organic products, oil refinery products or mixtures thereof, wherein the process comprises bringing the organic products, oil refinery products, or mixtures thereof into contact with a catalyst according to claim in the presence of hydrogen gas at a temperature in the range of 200 to 500° C. and at a pressure in the range of 10 to 1000 bar. 1. A catalyst , comprising at least one metal component selected from the group consisting of cobalt , nickel , molybdenum , and tungsten , andat least one non-metallic supplement component that is electrically conducting;wherein the catalyst includes a mixture of particles of the at least one metal component and the at least one non-metallic supplement component.2. The catalyst of claim 1 , wherein the metal component is molybdenum.3. The catalyst of claim 1 , wherein the supplement component is hydrophobic or is made hydrophobic.4. The catalyst of claim 1 , wherein the supplement component comprises one or more constituents selected of the group of materials that are graphite claim 1 , graphite-containing material claim 1 , graphite-like material claim 1 , made graphitic material claim 1 , carbon black claim 1 , carbon fibers claim 1 , single-walled carbon nanotubes claim 1 , multi-walled carbon nanotubes claim 1 , carbon nanofibers claim 1 , mesoporous carbon claim 1 , fullerene claim 1 , doped diamond claim 1 , conducting polymers claim 1 , ion-conducting polymers claim 1 , polyaniline claim 1 , polythiophene claim 1 , polypyrrol claim 1 , polyacetylene claim 1 , poly(para-phenylene) claim 1 , poly(para-phenylenvinylene) claim 1 , polyethylendioxythiophene claim 1 , polybenzimidazole claim 1 , polyphthalocyanin claim 1 , ion-exchanging material claim 1 , ion-exchanging resin claim 1 , sulfonated polymers claim 1 , sulfonated high performance polymers claim 1 , sulfonated PTFE claim 1 , sulfonated PPS claim 1 , sulfonated PEEK claim 1 , polyphosphazene claim 1 , fullerene ...

Подробнее
Номер записи: 23
06-03-2014 дата публикации

Hydroconversion Multi-Metallic Catalyst and Method For Making Thereof

Номер: US20140066293A1
Автор: Alexander E. Kuperman, Jinyi Han
Принадлежит: Chevron USA Inc

The invention relates to a self-supported mixed metal sulfide (MMS) catalyst for hydrotreating hydrocarbon feedstock and to a method for preparing the catalyst. The self-supported MMS catalyst contains Ni:W in a mole ratio of 1:3 to 4:1, on a transition metal basis. The self supported MMS catalyst is characterized as having an HYD reaction rate constant of at least 15% higher than that of a catalyst comprising nickel sulfide alone or a catalyst comprising tungsten sulfide alone, when compared on same metal molar basis in hydrotreating of benzene as a feedstock at identical process conditions.

Подробнее
Номер записи: 24
10-04-2014 дата публикации

CATALYST AND CATALYST CARRIER

Номер: US20140100379A1
Автор: Lockemeyer John R., Richard Michael A.
Принадлежит:

The carrier of the present invention includes at least 85 wt percent alpha alumina, at least 0.06 wt percent SiOand no more than 0.04 wt percent NaO. The carrier has a water absorption no greater than 0.35 g/g and a ratio of water absorption (g/g) to surface area (m/g) no greater than 0.50 g/m. Another aspect of the invention is a catalyst for the epoxidation of olefins which comprises the above described carrier and silver dispersed thereon, where the carrier has a monomodal, bimodal or multimodal pore distribution and where the quantity of silver is between 5 and 50 wt %, relative to the weight of the catalyst. A reactor to system for the epoxidation of olefins is also disclosed. 1. A carrier comprising at least 85 wt percent alpha alumina , at least 0.06 wt percent SiOand no more than 0.04 wt percent NaO , said carrier comprising a water absorption no greater than 0.35 gram of water/gram of carrier and a ratio of water absorption (gram of water/gram of carrier) to surface area (mof carrier/gram of carrier) no greater than 0.50 gram of water/mof carrier.2. The carrier of wherein said SiOdoes not exceed 0.40 wt percent.3. The carrier of wherein said SiOdoes not exceed 0.30 wt percent.4. The carrier of wherein said NaO does not exceed 0.03 wt percent.5. The carrier of wherein said carrier comprises at least 0.15 wt percent SiO.6. The carrier of wherein said ratio does not exceed 0.45 g/m.7. The carrier of wherein said ratio does not exceed 0.40 g/m.8. The carrier of wherein said water absorption does not exceed 0.30 g/g.9. The carrier of wherein said surface area exceeds 0.70 m/g.10. The carrier of wherein said surface area exceeds 0.75 m/g.11. The carrier of claim 1 , wherein said carrier further comprises a total pore volume and at least 60% of the total pore volume is contributed by pores having diameters within a range no greater than 3.8 microns.12. The carrier of wherein at least 80% of the total pore volume is contributed by pores having diameters within a ...

Подробнее
Номер записи: 25
02-01-2020 дата публикации

CATALYST FOR HYDROGENATION OF CARBONYL COMPOUND AND ALCOHOL PRODUCTION METHOD

Номер: US20200001276A1
Автор: AOSHIMA Takayuki, MATSUO Takeshi, Yoshikawa Yumiko
Принадлежит: MITSUBISHI CHEMICAL CORPORATION

Provided is a catalyst including a metal component including a first component that is rhenium and one or more second components selected from the group consisting of silicon, gallium, germanium, and indium and a carrier on which the metal component is supported, the carrier including an oxide of a metal belonging to Group 4 of the periodic table. Also provided is an alcohol production method in which a carbonyl compound is treated using the above catalyst. It is possible to produce an alcohol by a hydrogenation reaction of a carbonyl compound with high selectivity and high efficiency while reducing side reactions. 1. An alcohol production method in which an alcohol is produced from a carbonyl compound , the method comprising producing an alcohol by contacting a carbonyl compound with a catalyst , the catalyst comprising a metal component comprising a first component that is rhenium and one or more second components selected from the group consisting of silicon , gallium , germanium , and indium and a carrier on which the metal component is supported , the carrier comprising an oxide of a metal belonging to Group 4 of the periodic table.2. The alcohol production method according to claim 1 , wherein a mass ratio of elements that are the second components included in the catalyst to the rhenium element included in the catalyst is in a range of 0.1 to 10.3. The alcohol production method according to claim 1 , wherein the oxide of a metal belonging to Group 4 of the periodic table claim 1 , the oxide being included in the catalyst claim 1 , comprises titanium oxide and/or zirconium oxide.4. The alcohol production method according to claim 1 , wherein the catalyst is a catalyst prepared by a method comprising attaching the metal component to a carrier comprising a sulfate ion.5. The alcohol production method according to claim 4 , wherein the sulfate ion content in the carrier is 0.01% by mass to 10% by mass of the mass of the carrier.6. The alcohol production method ...

Подробнее
Номер записи: 26
05-01-2017 дата публикации

METHOD FOR SYNTHESISING DIMETHYL CARBONATE

Номер: US20170001942A1
Автор: Lavoine-Hanneguelle Sophie, MARUEJOULS Christophe, MOULOUNGUI Zephirin
Принадлежит:

A method for synthesising dimethyl carbonate from methanol and urea, in which a saline ureic medium is used that includes at least one inorganic salt selected from the group made up of zinc (Zn) (II) chloride, tin (Sn) chlorides and iron (Fe) (III) chloride, characterised in that: methanol, in the presence of a catalytic composition, is placed in contact with the saline ureic medium that is at least partially liquid at a temperature referred to as synthesis temperature, which is higher than 140° C., such that reaction vapours are produced; the reaction vapours are condensed, and a condensate of the reaction vapours is collected, including dimethyl carbonate; the method is carried out at atmospheric pressure. A method for enriching and purifying dimethyl carbonate is also described. 118-. (canceled)19. Method for synthesizing dimethyl carbonate starting from methanol and urea , in which a saline ureic medium comprising at least one inorganic salt selected from the group consisting essentially of zinc chloride (Zn) II , tin chlorides (Sn) , and iron chloride (Fe) III is used: methanol, in the presence of a catalytic composition, is brought into contact with said saline ureic medium that is at least partially liquid at a temperature, so-called synthesis temperature, that is higher than 140° C., such that reaction vapors are produced;', 'the reaction vapors are condensed, and a condensate of said reaction vapors and that comprises dimethyl carbonate is recovered;', 'the method is implemented at atmospheric pressure., 'wherein20. Method according to claim 19 , wherein during a first operating step claim 19 , a reaction medium that comprises the saline ureic medium claim 19 , the catalytic composition claim 19 , and a first quantity of methanol is formed claim 19 , and the reaction medium is kept at the synthesis temperature claim 19 , with the formed condensate being reintroduced into the reaction medium claim 19 , and then during a second subsequent operating step claim ...

Подробнее
Номер записи: 27
03-01-2019 дата публикации

PROCESS FOR PRODUCING CHLOROTRIFLUOROETHYLENE

Номер: US20190002374A1
Автор: Tung Hsueh Sung, WANG HAIYOU
Принадлежит:

The present invention relates, at least in part, to a process for making chlorotrifluoroethylene (CFO-1113) from 1,2-dichloro-1,1,2-trifluoroethane (HCFC-123a). In certain aspects, the process includes dehydrochlorinating 1,2-dichloro-1,1,2-trifluoroethane (HCFC-123a) in the presence of a catalyst selected from the group consisting of (i) one or more metal halides; (ii) one or more halogenated metal oxides; (iii) one or more zero-valent metals or metal alloys; (iv) combinations thereof. 1. A process for producing chlorotrifluoroethylene (CFO-1113) comprising:dehydrochlorinating 1,2-dichloro-1,1,2-trifluoroethane (HCFC-123a) in the presence of a catalyst selected from the group consisting of (i) one or more metal halides; (ii) one or more halogenated metal oxides; (iii) one or more zero-valent metals or metal alloys; (iv) combinations thereof to produce a reaction product comprising CFO-1113.2. The process of wherein the conversion of HCFC-123a is at least about 5 wt. %.3. The process of wherein a selectivity to chlorotrifluoroethylene is at least about 70 wt. %.4. The process of wherein said reaction product comprises less than about 10 wt. % of CFO-1112.5. The process of wherein the dehydrochlorinating step is conducted at a temperature greater than about 400° C.6. The process of wherein a substantial portion of the dehydrochlorinating step is carried out at a temperature of from about 480° C. to about 550° C.7. The process of wherein catalyst comprises a mono-valent metal halide claim 1 , a bi-valent metal halide claim 1 , a tri-valent metal halide claim 1 , or a combination thereof.8. The process of wherein catalyst comprises a mono-valent metal halide claim 1 , a bi-valent metal halide or a combination thereof.9. The process of wherein the catalyst comprises at least one metal halide wherein the component metal is selected from the group consisting of Cr claim 1 , Fe claim 1 , Mg claim 1 , Ca claim 1 , Ni claim 1 , Zn claim 1 , Pd claim 1 , Li claim 1 , Na claim ...

Подробнее
Номер записи: 28
14-01-2016 дата публикации

EXHAUST GAS TREATMENT CATALYST AND METHOD FOR REGENERATING THE SAME

Номер: US20160008793A1
Автор: Demoto Masanori, Kiyosawa Masashi, NOCHI Katsumi, Yonemura Masanao
Принадлежит: Mitsubishi Hitachi Power Systems, Ltd.

Provided are an exhaust gas treatment catalyst for denitrifying an exhaust gas including sulfur oxides and vanadium discharged from a heavy oil combustion boiler, including: a support comprising any one or all of titanium oxide and silica wherein a content of silica is from 10% to 20%, and an active component supported in the support and comprising one selected from the group consisting of vanadium and tungsten. 1. An exhaust gas treatment catalyst for denitrifying an exhaust gas including sulfur oxides and vanadium discharged from a heavy oil combustion boiler , comprising:a support comprising titanium and silica wherein a content of silica is from 10% by mass to 20% by mass, andan active component supported in the support and comprising one selected from the group consisting of vanadium and tungsten.2. The exhaust gas treatment catalyst according to claim 1 , further comprising a coating layer formed of at least one component selected from the group consisting of silicalite and metallosilicate on a surface of the exhaust gas treatment catalyst. This application is a divisional of U.S. patent application Ser. No. 14/017,741, filed Sep. 4, 2013, which is based upon and claims the benefit of priority from Japanese Patent Application No. 2012-195138, filed Sep. 5, 2012 and Japanese Patent Application No. 2013-182381, filed Sep. 3, 2013, the entire contents of which are incorporated herein by reference.1. Field of the InventionThe present invention relates to an exhaust gas treatment catalyst that remove nitrogen oxides from an exhaust gas discharged from combustion devices such as heavy oil combustion boilers and the like using low-grade fuel and the like and a method for regenerating the exhaust gas treatment catalyst.2. Description of the Related ArtRecently, focus has been placed on the effective utilization of coal, and in the future, it is predicted that demand on the clean process of using coal will be increased. In order to convert coal into a highly value- ...

Подробнее
Номер записи: 29
14-01-2016 дата публикации

HYDROPROCESSING CATALYST, PREPARATION METHOD THEREOF AND USE OF SAME

Номер: US20160008799A1
Автор: BRUN Claude, CHOLLEY Thierry, Dath Jean-Pierre, Fremy Georges, HUMBLOT Francis
Принадлежит:

The invention relates to a hydrocarbon hydroprocessing catalyst comprising a support based on at least one refractory oxide, at least one metal from group VIII and at least one metal from group VIB. The inventive catalyst is characterized in that it also comprises at least one organic compound having formula (I) or (II): 2. The activated catalyst as claimed in claim 1 , wherein the organic compound of formula (I) or (II) is selected from alkyl ortho-phthalates claim 1 , alkyl isophthalates claim 1 , alkyl terephthalates claim 1 , malonic acid esters claim 1 , adipic acid esters claim 1 , glutaric acid esters claim 1 , 1 claim 1 ,6-dioxacyclodecane-2 claim 1 ,5-dione claim 1 , dimethyl 2-(methoxymethyl)-succinate claim 1 , dibutyl itaconate claim 1 , diethyl 2 claim 1 ,3-diacetylsuccinate claim 1 , dimethyl cyclohexane-1 claim 1 ,4-dicarboxylate claim 1 , dimethyl 3 claim 1 ,3′-dithiodipropionate claim 1 , glycerol triacetate claim 1 , propylene glycol diacetate claim 1 , ethylene glycol dimethacrylate and pentaerythritol tetrakis(3-mercaptopropionate).3. The activated catalyst as claimed claim 1 , wherein the number of carbon atoms separating the two groups >C═O of formulae (I) and (II) is equal to 1 claim 1 , 2 or 4.4. The activated catalyst as claimed in claim 3 , wherein the organic compound of formula (I) is a C-Cdialkyl succinate.5. The activated catalyst as claimed in claim 1 , wherein the catalyst comprises at least 0.001 mol of at least one organic compound per mole of metals of groups VIB and VIII.6. The activated catalyst as claimed in claim 5 , wherein the catalyst comprises from 0.001 to 10 mol of at least one organic compound per mole of metals of groups VIB and VIII.8. The method as claimed in claim 7 , wherein the catalyst comprising a carrier based on at least one refractory oxide claim 7 , at least one metal of group VIII in the oxide state and at least one metal of group VIB in the oxide state is a regenerated catalyst.9. The method as claimed in ...

Подробнее
Номер записи: 30
21-01-2021 дата публикации

SAFE AROMATICS

Номер: US20210017101A1
Автор: Austin Julia, Kriech Anthony J., Kriech Matthew
Принадлежит: Heritage Research Group

A method for reducing the mutagenicity of polycyclic aromatic compounds (PAC's) having one or more bay regions which involves alkylating the PAC's with an alkylating agent in the presence of a catalyst to lower the mutagenicity down to as much as about 0.1. The resulting alkylated polycyclic aromatic compounds retain their physical and chemical properties for safe industrial use including as rubber processing oils, inks, etc. 1. A method of reducing the mutagenicity of polycyclic aromatic compounds having one or more bay regions , which method comprises:obtaining a composition comprising one or more polycyclic aromatic compounds;contacting the composition comprising polycyclic aromatic compounds with alkylating agent selected from styrene and hexene in the presence of a catalyst selected from Lewis acids and protonic acids to alkylate the polycyclic aromatic compounds to provide one or more polycyclic aromatic compounds that are alkylated at a position blocking the at least one bay region; andrecovering the alkylated polycyclic aromatic compounds,wherein the mutagenicity of the alkylated polycyclic aromatic compounds is less than 1.0.2. The method of reducing the mutagenicity of polycyclic aromatic compounds according to claim 1 , wherein the composition comprising one or more polycyclic aromatic compounds is selected from heavy vacuum gas oils claim 1 , light cycle oil claim 1 , reclamite B claim 1 , and a cat cracker slurry.3. The method of reducing the mutagenicity of polycyclic aromatic compounds according to claim 2 , wherein the composition comprising one or more polycyclic aromatic compounds comprise heavy vacuum gas oils.4. The method of reducing the mutagenicity of polycyclic aromatic compounds according to claim 3 , wherein the alkylating agent is styrene and the catalyst is a protonic acid.5. The method of reducing the mutagenicity of polycyclic aromatic compounds according to claim 1 , wherein the mutagenicity of the alkylated polycyclic aromatic ...

Подробнее
Номер записи: 31
21-01-2021 дата публикации

Process for Manufacture of 1,1,1-Trifluoro-2-Chloroethane

Номер: US20210017117A1
Автор: DU Hongjun, Wu Wenting
Принадлежит: Fujian Yongjing Technology Co., Ltd

The invention relates to a new process for the manufacture of fluoroaryl compounds and derivatives thereof, in particular of fluorobenzenes and derivatives thereof, and especially wherein said manufacture relates to an environmentally friendly production of the said compounds. Thus, the present invention overcomes the disadvantages of the prior art processes, and in a surprisingly simple and beneficial manner, and as compared to the prior art processes, in particular, the invention provides a more efficient and energy saving processes, and also provides a more environmentally friendly process, for the manufacture of nuclear fluorinated aromatics, and preferably of nuclear fluorinated fluorobenzenes. Accordingly, in one aspect of the invention, an industrially beneficial process for preparing fluorobenzenes from halobenzene precursors using HF to form hydrogen halide is provided by the present invention. A beneficial and surprisingly simple use of chlorobenzene as an industrially interesting starting material in the manufacture of fluorobenzene is provided. 1. A process for the manufacture of HCFC-133a (1 ,1 ,1-trifluoro-2-chloroethane) comprising the steps of:(a) providing TRI (trichloroethylene) as a starting material;(b) providing HF (hydrogen fluoride) and a catalyst, preferably a halogenation promoting catalyst, more preferably fluorination promoting catalyst;(c) mixing the TRI of (a) with the HF and the said catalyst of (b); flow rate: of from about 10 ml/h up to about 400 l/h;', 'temperature: of from about 30° C. up to about 150° C.;', 'pressure: of from about 5 bar up to about 50 bar;', 'residence time: of from about 1 second up to about 60 minutes;, 'wherein the continuous flow reactor is a microreactor and the mixture obtained in (c) is fed into the microreactor under one or more of the following conditions, '(d) feeding the mixture obtained in (c) into at least one continuous flow reactor with upper lateral dimensions of about ≤5 mm, and therein carrying ...

Подробнее
Номер записи: 32
16-01-2020 дата публикации

OXYGEN REDUCTION CATALYST, ELECTRODE, MEMBRANE ELECTRODE ASSEMBLY, AND FUEL CELL

Номер: US20200020966A1
Автор: FURUYA Kazuo, IMAI Takuya, Lee Kunchan
Принадлежит: SHOWA DENKO K.K.

Provided are an oxygen reduction catalyst having a high electrode potential under a fuel cell operating environment, an electrode containing the oxygen reduction catalyst, a membrane electrode assembly in which a cathode is the electrode, and a fuel cell including the membrane electrode assembly. The oxygen reduction catalyst used here contains cobalt, sulfur, and oxygen as elements, has a CoScubic structure in powder X-ray diffractometry, and having an S—Co/S—O peak area ratio of 6 to 15 in an S2p spectrum in X-ray photoelectron spectroscopic analysis. 1. An oxygen reduction catalyst comprising cobalt , sulfur , and oxygen as elements , having a CoScubic structure in powder X-ray diffractometry ,and having an S—Co/S—O peak area ratio of 6 to 15 in an S2p spectrum in X-ray photoelectron spectroscopic analysis.2. An electrode comprising a catalyst layer containing the oxygen reduction catalyst according to .3. A membrane electrode assembly comprising a cathode claim 2 , an anode claim 2 , and a polymer electrolyte membrane interposed between the cathode and the anode claim 2 , wherein the cathode is the electrode according to .4. A fuel cell comprising the membrane electrode assembly according to . The present invention relates to an oxygen reduction catalyst, an electrode including a catalyst layer containing the oxygen reduction catalyst, a membrane electrode assembly including the electrode, and a fuel cell.A polymer electrolyte fuel cell (PEFC) is a fuel cell having a form in which: a solid polymer electrolyte is sandwiched between an anode and a cathode; a fuel is supplied to the anode; and oxygen or air is supplied to the cathode, whereby oxygen is reduced at the cathode to produce electricity. As the fuel, hydrogen gas or methanol and the like is mainly used. To enhance a reaction rate in the PEFC and to enhance the energy conversion efficiency of the PEFC, a layer containing a catalyst has been conventionally provided on the surface of a cathode or the ...

Подробнее
Номер записи: 33
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 ...

Подробнее
Номер записи: 34
24-01-2019 дата публикации

PRODUCTION OF PRODUCTS FROM NATURAL RESOURCES

Номер: US20190023640A1
Автор: Ahmed Labeeb Chaudhary, Karim Khalid
Принадлежит:

The method disclosed herein relates to two stage catalytic processes for converting syngas to acetic acid, acrylic acid and/or propylene. More specifically, the method described and claimed herein relate to a method of producing acrylic acid and acetic acid comprising the steps of: a) providing a feedstream comprising syngas; b) contacting the feedstream with a first catalyst to produce a first product stream comprising C-Colefins and/or C-Cparaffins; and c) contacting the first product stream with oxygen gas and a second catalyst, thereby producing a second product stream comprising acrylic acid and acetic acid, wherein there is no step for separating the components of the first product stream before the first product stream is contacted with the second catalyst. 1. A method of producing acrylic acid and acetic acid comprising the steps of:a) providing a feedstream comprising syngas;{'sub': 2', '3', '2', '3, 'b) a step consisting of contacting the feedstream with a first catalyst to produce a first product stream comprising C-Colefins and/or C-Cparaffins; and'}c) contacting the first product stream with oxygen gas and a second catalyst, thereby producing a second product stream comprising acrylic acid and acetic acid,wherein there is no step for separating the components of the first product stream before the first product stream is contacted with the second catalyst.2. The method of claim 1 , wherein the method further comprises separating the acetic acid and the acrylic acid.3. The method of claim 1 , wherein the first catalyst comprises a mixed metal oxide represented by the formula{'br': None, 'sub': a2', 'b2', 'z2', 'y2', 'd2', 'f2, 'CoMnLaPM2O,'}wherein a2 is 1;wherein b2 is from 0.8 to 1.2;wherein z2 is greater than 0 to 0.5;wherein y2 is greater than 0 to 0.5;wherein M2 comprises an alkali metal, alkaline earth metal, or transition metal, or a mixture thereof,wherein d2 is greater than 0 to 0.5; andwherein f2 is a number determined by the valence ...

Подробнее
Номер записи: 35
24-04-2014 дата публикации

Method For Making Catalyst Compositions Of Alkali Metal Halide-Doped Bivalent Metal Fluorides And A Process For Making Fluorinated Olefins

Номер: US20140113805A1
Автор: Haiyou Wang, Hsueh Sung Tung
Принадлежит: Honeywell International Inc

There is provided methods for making a catalyst composition represented by the formula MX/M′F 2 wherein MX is an alkali metal halide; M is an alkali metal ion selected from the group consisting of Li + , Na + , K + , Rb + , and Cs + ; X is a halogen ion selected from the group consisting of F − , Cl − , Br − , and I − ; M′F 2 is a bivalent metal fluoride; and M′ is a bivalent metal ion. One method has the following steps: (a) dissolving an amount of the alkali metal halide in an amount of solvent sufficient to substantially dissolve or solubilize the alkali metal halide to form an alkali metal halide solution; (b) adding an amount of the bi-valent metal fluoride to the alkali metal halide solution to form a slurry of the alkali metal halide and bi-valent metal fluoride; and (c) removing substantially all of the solvent from the slurry to form a solid mass of the alkali metal halide and bi-valent metal fluoride. Another method has the following steps: (a) adding an amount of hydroxide, oxide, or carbonate of an alkali metal to an aqueous solution of a hydrogen halide and reacted to form an aqueous solution of an alkali metal halide; (b) adding an amount of a hydroxide, oxide, or carbonate of a bivalent metal to an aqueous solution of hydrogen fluoride and reacted to form a precipitate of a bivalent metal fluoride; (c) admixing the alkali metal halide solution and the bivalent metal fluoride precipitate are admixed to form an aqueous slurry; and (d) removing water from the aqueous slurry to form a solid mass. There is also a method for making a fluorinated olefin.

Подробнее
Номер записи: 36
01-02-2018 дата публикации

Catalysts For Making Acrylic Acid From Lactic Acid Or Its Derivatives In Liquid Phase

Номер: US20180029026A1
Автор: Albert Jakob, Collias Dimitris Ioannis, Kadar Julian, Kehrer Matthias, Nagengast Jens, Taccardi Nicola, Wasserscheid Peter
Принадлежит:

Catalysts for the dehydration of lactic acid, lactic acid derivatives, or mixtures thereof to acrylic acid, acrylic acid derivatives, or mixtures thereof in liquid phase comprising an ionic liquid (IL) and an acid are provided. 1. A molten salt catalyst comprising an ionic liquid (IL) and an acid; wherein said IL has a bromide anion (Br); wherein said acid is soluble in said IL and selected from the group consisting of Lewis acid , Brønsted acid , and mixtures thereof; wherein said Lewis acid is selected from the group consisting of CaBr , MgBr , AlBr , CuBr , and mixtures thereof; and wherein said Brønsted acid has a pKless than about 5 in water at 25° C.2. The catalyst of claim 1 , wherein said IL has a phosphonium cation.3. The catalyst of claim 2 , wherein said phosphonium cation is selected from the group consisting of alkyl substituted phosphonium claim 2 , aryl substituted phosphonium claim 2 , mixed alkyl aryl substituted phosphonium claim 2 , and mixtures thereof.4. The catalyst of claim 3 , wherein said IL is tetrabutylphosphonium bromide ([PBu]Br).5. The catalyst of claim 3 , wherein said IL is ethyltriphenylphosphonium bromide ([EtPPh]Br).6. The catalyst of claim 4 , wherein said Brønsted acid is pyrophosphoric acid (HPO).7. The catalyst of claim 6 , wherein the molar ratio of said [PBu]Br to said HPOis between about 1 and about 30.8. The catalyst of claim 7 , wherein the molar ratio of said [PBu]Br to said HPOis about 4.75.9. The catalyst of claim 4 , wherein said Brønsted acid is hydrobromic acid (HBr).10. The catalyst of claim 9 , wherein the molar ratio of said [PBu]Br to said HBr is between about 1 and about 20.11. The catalyst of claim 10 , wherein the molar ratio of said [PBu]Br to said HBr is between about 2 and about 5.12. The catalyst of claim 11 , wherein the molar ratio of said [PBu]Br to said HBr is about 4.75.13. The catalyst of claim 5 , wherein said Brønsted acid is hydrobromic acid (HBr).14. The catalyst of claim 13 , wherein the molar ...

Подробнее
Номер записи: 37
17-02-2022 дата публикации

CATALYST FOR ALKANE OXIDATIVE UU DEHYDROGENATION AND/OR ALKENE OXIDATION

Номер: US20220048011A1
Автор: BOS Alouisius, CHRISTIANSEN Matthew Adam, COLIJN Hendrik Albertus, KLEMT Andreas, SCHOONEBEEK Ronald Jan, SCHRICKER Ralf, SCHUT Peter, STOBBE Erwin Roderick, VAN ROSSUM Guus
Принадлежит:

The invention relates to a process for preparing a shaped catalyst for alkane oxidative dehydrogenation and/or alkene oxidation, which comprises: a) preparing a mixed metal oxide catalyst containing molybdenum, vanadium, niobium and optionally tellurium; b) mixing the catalyst obtained in step a), a binder and optionally water, wherein the binder has a surface area greater than 100 m/g and a water loss upon heating at a temperature of 485° C. which is greater than 1 wt. %; c) shaping the mixture obtained in step b) to form a shaped catalyst by means of tableting; and d) subjecting the shaped catalyst obtained in step c) to an elevated temperature. Further, the invention relates to a catalyst obtainable by said process and to a process of alkane oxidative dehydrogenation and/or alkene oxidation wherein said catalyst is used. 1. A process for preparing a shaped catalyst for alkane oxidative dehydrogenation and/or alkene oxidation , the process comprising:a) preparing a mixed metal oxide catalyst containing molybdenum, vanadium, niobium and optionally tellurium;b) mixing the catalyst obtained in step a), a binder and optionally water, wherein the binder has a surface area greater than 100 m2/g and a water loss upon heating at a temperature of 485° C. greater than 1 wt. %, wherein said water loss is represented by the difference between the binder weight after heating the binder at a temperature of 110° C. and the binder weight after heating the binder at a temperature of 485° C., relative to the binder weight after heating the binder at a temperature of 110° C.;c) shaping the mixture obtained in step b) to form a shaped catalyst by means of tableting; andd) subjecting the shaped catalyst obtained in step c) to an elevated temperature.2. The process according to claim 2 , wherein the water loss of the binder is at least 2 wt. %.3. The process according to claim 1 , wherein the surface area of the binder is of from 150 to 500 m2/g.4. The process according to claim 1 , ...

Подробнее
Номер записи: 38
30-01-2020 дата публикации

EXHAUST GAS PURIFICATION CATALYST

Номер: US20200030780A1
Автор: ITOU Minoru, Kawamura Shogo, NAGATA Takahiro, Oishi Shunsuke, ORI Hirotaka
Принадлежит:

The present invention provides an exhaust gas purification catalyst including an alkaline earth metal supported in a highly dispersed state on a porous carrier. A catalyst layer of the exhaust gas purification catalyst provided by the invention has an alkaline earth metal-supporting region including a porous carrier, a catalyst metal belonging to the platinum group, and a sulfate of at least one type of alkali earth metal supported on the porous carrier. In a cross-section of this region, a Pearson correlation coefficient Ris at least 0.5 as calculated using α and β for each pixel obtained by carrying out area analysis by FE-EPMA under conditions of pixel size of 0.34 μm×0.34 μm, and measured pixel number 256×256, and by measuring the characteristic X-ray intensity (α: cps) of the alkaline earth metal element (Ae) and the characteristic X-ray intensity (β: cps) of the main constituent element of the inorganic compound constituting the porous carrier for each pixel. 1. An exhaust gas purification catalyst to be disposed in the exhaust pipe of an internal combustion engine for purifying exhaust gas emitted by the internal combustion engine , the exhaust gas purification catalyst comprisinga substrate anda catalyst layer formed on the substrate, whereinthe catalyst layer has an alkaline earth metal-supporting region includinga porous carrier composed of an inorganic compound,at least one catalyst metal belonging to the platinum group which is supported on the porous carrier and functions as an oxidation and/or reduction catalyst, andat least one sulfate of alkaline earth metal supported on the porous carrier, and wherein{'sub': Ae/M', 'Ae/M, 'when a cross-section of the alkaline earth metal-supporting region of the catalyst layer is subjected to area analysis by FE-EPMA under conditions of pixel (section) size of 0.34 μm×0.34 μm and number of measured pixels (sections) of 256×256, and a characteristic X-ray intensity (α: cps) of the alkaline earth metal element (Ae) ...

Подробнее
Номер записи: 39
05-02-2015 дата публикации

METHODS OF PREPARING CATALYSTS FOR THE CHIRALLY SELECTIVE SYNTHESIS OF SINGLE-WALLED CARBON NANOTUBES

Номер: US20150037240A1
Автор: Chen Yuan
Принадлежит:

Methods of preparing a sulfur-containing catalyst for the chirally selective synthesis of single-walled carbon nanotubes are presented. Sulfur-containing catalysts for the chirally selective synthesis of single-walled carbon nanotubes, the catalysts comprising sulfur-doped transition metal as active phase on a support, and methods of forming single-walled carbon nanotubes having a selected chirality using the catalysts are also presented. 1. A method of preparing a sulfur-containing catalyst for the chirally selective synthesis of single-walled carbon nanotubes , the method comprising: i) providing a transition metal-containing support, wherein the transition metal is selected from the group consisting of cobalt, iron, nickel, chromium, manganese, copper, rhodium, ruthenium, and mixtures thereof;', 'ii) impregnating the transition metal-containing support with a solution comprising sulfate ions to form a sulfur-doped transition metal-containing support; and', 'iii) calcining the sulfur-doped transition metal-containing support at a temperature of less than 700° C. to form the sulfur-containing catalyst; or, 'a)'} i) impregnating a support with a solution comprising a sulfate salt of a transition metal to form a transition metal sulfate-impregnated support, wherein the transition metal is selected from the group consisting of cobalt, iron, nickel, chromium, manganese, copper, rhodium, ruthenium, and mixtures thereof; and', 'ii) calcining the transition metal sulfate-impregnated support at a temperature of less than 700° C. to form the sulfur-containing catalyst., 'b)'}24.-. (canceled)5. The method according to claim 1 , wherein the transition metal comprises or consists essentially of cobalt.6. The method according to claim 1 , wherein providing the transition metal-containing support comprisesa) impregnating a support with a solution comprising transition metal to form an impregnated support; andb) calcining the impregnated support at a temperature of less than 700° ...

Подробнее
Номер записи: 40
11-02-2016 дата публикации

CATALYST FOR ALKANE OXIDATIVE DEHYDROGENATION AND/OR ALKENE OXIDATION

Номер: US20160038922A1
Автор: BERG-SLOT Johanna Jacoba, DE ROOIJ Friso, SCHOONEBEEK Ronald Jan, VERHAAK Michael Johannes Franciscus Maria
Принадлежит:

The invention relates to a process for treating a catalyst for alkane oxidative dehydrogenation and/or alkene oxidation, which catalyst is a mixed metal oxide catalyst containing molybdenum, vanadium and niobium, wherein the process comprises: contacting, during a period of time from 30 minutes to shorter than 5 hours, the catalyst with a gas mixture comprising an inert gas and oxygen (O), wherein the amount of oxygen is of from to less than 10,000 parts per million by volume (ppmv), based on the total volume of the gas mixture, at an elevated temperature. 1. A process for treating a catalyst for alkane oxidative dehydrogenation and/or alkene oxidation , which catalyst is a mixed metal oxide catalyst containing molybdenum , vanadium and niobium , wherein the process comprises:{'sub': '2', 'contacting, during a period of time from 30 minutes to shorter than 5 hours, the catalyst with a gas mixture comprising an inert gas and oxygen (O), wherein the amount of oxygen is of from 1 to less than 10,000 parts per million by volume (ppmv), based on the total volume of the gas mixture, at an elevated temperature.'}2. A process according to claim 1 , wherein the temperature is of from 300 to 900° C.3. A process according to claim 1 , wherein the amount of oxygen is of from 10 to 7 claim 1 ,000 parts per million by volume.4. A process according to claim 1 , wherein the catalyst additionally contains tellurium.5. A process for preparing a catalyst for alkane oxidative dehydrogenation and/or alkene oxidation claim 1 , which catalyst is a mixed metal oxide catalyst containing molybdenum claim 1 , vanadium and niobium claim 1 , wherein the process comprises:a) preparing a catalyst containing molybdenum, vanadium and niobium;{'sub': '2', 'b) contacting the catalyst with oxygen (O) at an elevated temperature, to obtain a mixed metal oxide catalyst containing molybdenum, vanadium and niobium; and'}{'sub': '2', 'c) contacting, during a period of time from 30 minutes to shorter than 5 ...

Подробнее
Номер записи: 41
09-02-2017 дата публикации

CATALYTIC OXIDATION/REDUCTION COMPOSITIONS AND ARTICLES

Номер: US20170036839A1
Автор: Powers Thomas H., Solovyov Stanislav E., THATTE Mrunal R.
Принадлежит:

A redox composition includes a carbohydrate material and a catalytic molar amount of an organic compound positioned in catalytic relationship with the carbohydrate material to catalyze oxidation of the carbohydrate material in an environment in which the carbohydrate material would not otherwise oxidize. 1. A redox composition for reducing a compound of interest , comprising:a carbohydrate material; anda catalytic molar amount of an organic compound in a mobile phase and in catalytic relationship with the carbohydrate material to promote oxidation of the carbohydrate material, the organic compound having at least one carbon-carbon double bond and at least one hydroxyl group.2. The redox composition of wherein the carbohydrate material and the organic compound are present in the redox composition at a weight ratio of carbohydrate material:organic compound in a range of 1:1 to 200:1.3. (canceled)4. The redox composition of wherein the organic compound is a phenol and comprises resorcinol claim 1 , pyrogallol claim 1 , pyrocatechol monoethyl ether claim 1 , resorcinol monoethyl ether claim 1 , hydroquinone claim 1 , catechol claim 1 , 1 claim 1 ,2 claim 1 ,4-trihydroxy benzene claim 1 , tetrahydroxy-1 claim 1 ,4-benzoquinone claim 1 , 2 claim 1 ,4-dibutylphenol in free form or in the form of an alkali or alkaline earth metal salt claim 1 , or 2 claim 1 ,6-dibutylphenol in free form or in the form of an alkali or alkaline earth metal salt.5. The redox composition of claim 3 , wherein the organic compound is an enediol and comprises ascorbic acid claim 3 , ascorbates in either D- or L-form claim 3 , ascorbate stereoisomers claim 3 , ascorbate diastereomers claim 3 , an alpha-hydroxy ketone claim 3 , ascorbate salts claim 3 , squaric acids claim 3 , dihydroxymaleic acids claim 3 , rhodizonic acids claim 3 , vicinal diols including 1 claim 3 , 2-diols claim 3 , vicinal diketones claim 3 , or dihydroxyfumaric acids.6. The redox composition of claim 1 , wherein the ...

Подробнее
Номер записи: 42
09-02-2017 дата публикации

NEUTRALIZATION OF ACIDIC CATALYSTS IN THE PRODUCTION OF PHENOL

Номер: US20170036979A1
Автор: Jiang Xin, MU Jianhai
Принадлежит:

An improved method for the production of phenol. The method comprises (a) synthesizing phenol through a process that utilizes an acidic catalyst; (b) neutralizing the acidic catalyst after substantial completion of step (a) by addition thereto of a neutralization composition, wherein the neutralization composition contains an ethyleneamine derivative. 2. The method of wherein the ethyleneamine derivative is selected from the group consisting of: ethylenediamine (EDA) claim 1 , diethylenetriamine (DETA) claim 1 , triethylenetetramine (TETA) aminoethylpiperazine (AEP) claim 1 , tetraethylenepentamine (TEPA) claim 1 , heavy polyamine X (HPA-X) claim 1 , and mixtures of two or more thereof.3. The method of wherein the ethyleneamine derivative is selected from the group consisting of: ethylenediamine (EDA) claim 1 , diethylenetriamine (DETA) claim 1 , triethylenetetramine (TETA) claim 1 , and mixtures of two or more thereof.4. The method of wherein the neutralization composition is substantially free of amine compounds other than ethyleneamines5. The method of wherein the neutralization composition further comprises claim 1 , methylpentamethyenediamine claim 1 , hexamethylenediamine claim 1 , or mixtures thereof.6. The method of wherein step (a) comprises decomposing of cumene hydroperoxide in the presence of an acidic catalyst to form phenol claim 1 , acetone claim 1 , and α-methylstyrene.7. The method of wherein step (a) comprises:(i) oxidizing at least a portion of a feed containing cyclohexylbenzene to produce an oxidation composition containing cyclohexyl-1-phenyl-1-hydroperoxide; and(ii) cleaving the oxidation composition in the presence of an acidic catalyst to produce a cleavage reaction mixture comprising the acidic catalyst, phenol, and cyclohexanone. This invention relates generally to an improved method for the production of phenol.A commonly used phenol production method is decomposition of cumene hydroperoxide to phenol, acetone, and α-methylstyrene in the ...

Подробнее
Номер записи: 43
07-02-2019 дата публикации

AGGLOMERATED ODH CATALYST

Номер: US20190039053A1
Автор: Anseeuw Renee Laurel, Barnes Marie Annette, Gao Xiaoliang, Kim Yoonhee, Simanzhenkov Vasily, Styles Yipei, Sullivan David
Принадлежит: NOVA CHEMICALS (INTERNATIONAL) S.A.

Oxidative dehydrogenation catalysts for converting lower paraffins to alkenes such as ethane to ethylene when prepared as an agglomeration, for example extruded with supports chosen from slurries of TiO, ZrOAlO, AlO(OH) and mixtures thereof have a lower temperature at which 25% conversion is obtained. 1. An agglomerated catalyst comprising:from 10 to 95 weight % of a catalyst of the formula:{'sub': 1.0', '0.12-0.49', '0.6-0.16', '0.15-0.20', 'd', '2', '2', '2', '3', '2, 'MoVTeNbOwherein d is a number to satisfy the valence of the oxide; and from 5-90 weight % of a binder chosen from acidic, basic or neutral binder slurries of TiO, ZrOAlO, AlO(OH) and mixtures thereof provided that ZrOis not used in combination with an aluminum containing binder.'}2. The agglomerated catalyst according to claim 1 , having a cumulative surface area less than 35 m/g as measured by BET.3. The agglomerated catalyst according to claim 2 , having a cumulative pore volume from 0.05 to 0.50 cm/g.4. The agglomerated catalyst according to claim 2 , having a pore size distribution less than 4% having pore width size less than 150 Angstroms.5. The agglomerated catalyst according to claim 2 , having a percent pore area distribution less than 40% and corresponding percentage of pore volume less than 20%.6. The agglomerated catalyst according to in the shape of a sphere claim 2 , rod claim 2 , ring claim 2 , or a saddle having a size from about 1.3 mm to 5 mm.7. The agglomerated catalyst according to claim 6 , wherein the binder is an acidified binder.8. The agglomerated catalyst according to claim 6 , wherein the binder is a base treated binder.9. The agglomerated catalyst according to claim 7 , in the shape of rods having an aspect ratio from 1 to 5/1.3 having a crush strength up to 100 N/mm.10. The agglomerated catalyst according to claim 8 , in the shape of rods having an aspect ratio from 1 to 5/1.3 having a crush strength up to 100 N/mm.11. The agglomerated catalyst according to claim 7 , in ...

Подробнее
Номер записи: 44
06-02-2020 дата публикации

OXIDATIVE DEHYDROGENATION CATALYSTS

Номер: US20200038847A1
Автор: Barnes Marie, de Wit Perry, Gao Xiaoliang, Kim Yoonhee, Simanzhenkov Vasily, Sullivan David
Принадлежит: NOVA CHEMICALS (INTERNATIONAL) S.A.

Provided in this disclosure are oxidative dehydrogenation catalysts that include a mixed metal oxide having the empirical formula: 1. An oxidative dehydrogenation catalyst comprising a mixed metal oxide having the empirical formula:{'br': None, 'sub': 1.0', '0.12-0.49', '0.05-0.17', '0.10-0.20', 'd, 'MoVTeNbO'} d is a number to satisfy the valence of the oxide, and', 'the oxidative dehydrogenation catalyst is characterized by having XRD diffraction peaks (2θ degrees) at 22±0.2, 27±0.2, 28.0±0.2, and 28.3±0.1., 'wherein2. The oxidative dehydrogenation catalyst of claim 1 , wherein the catalyst is prepared by a process comprising wet ball milling a pretreated oxidative dehydrogenation catalyst having the empirical formula:{'br': None, 'sub': 1.0', '0.12-0.49', '0.05-0.17', '0.10-0.20', 'd, 'MoVTeNbO'}wherein d is a number to satisfy the valence of the oxide.3. The oxidative dehydrogenation catalyst of claim 1 , wherein the aspect ratio of the peak at 27±0.2 to the peak at 22±0.2 is 0.55:1 to 0.65:1.4. The oxidative dehydrogenation catalyst of claim 1 , wherein the aspect ratio of the peak at 27±0.2 to the peak at 22±0.2 is about 0.60:1.5. The oxidative dehydrogenation catalyst of claim 1 , wherein the aspect ratio of the peak at 28.3±0.1 to the peak at 27±0.2 is 0.50:1 to 0.80:1.6. The oxidative dehydrogenation catalyst of claim 1 , wherein the aspect ratio of the peak at 28.3±0.1 to the peak at 27±0.2 is 0.60:1 to 0.70:1.7. The oxidative dehydrogenation catalyst of claim 1 , wherein the aspect ratio of the peak at 28.3±0.1 to the peak at 27±0.2 is about 0.65:1.8. The oxidative dehydrogenation catalyst of claim 1 , wherein the aspect ratio of the peak at 28.0±0.2 to the peak at 28.2±0.1 is 0.8:1 to 1.1:1.9. The oxidative dehydrogenation catalyst of claim 1 , wherein the aspect ratio of the peak at 28.0±0.2 to the peak at 28.2±0.1 is 0.9:1 to 1:1.10. The oxidative dehydrogenation catalyst of claim 1 , wherein the aspect ratio of the peak at 28.2±0.1 to the peak at 28.4 ...

Подробнее
Номер записи: 45
07-02-2019 дата публикации

CONVERSION OF MIXED METHANE/ETHANE STREAMS

Номер: US20190039972A1
Автор: BOS Alouisius Nicolaas Renée, SCHOONEBEEK Ronald Jan, VAN ROSSUM Guus, VERHAAK Michael Johannes Franciscus Maria
Принадлежит:

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

Подробнее
Номер записи: 46
12-02-2015 дата публикации

EXHAUST GAS PURIFYING CATALYST

Номер: US20150045209A1
Автор: Fujimura Takehiro, Takahashi Yoshinori
Принадлежит: N.E. CHEMCAT CORPORATION

The invention discloses a catalyst for purifying exhaust gas apparatus having a Three-way Catalyst (TWC) superior in purification performance of, particularly, NO, among carbon monoxide (CO), hydrocarbons (HC), and nitrogen oxides (NO), in exhaust gas discharged from a gasoline automobile. It is provided by a catalyst for purifying exhaust gas containing a Rhodium (Rh)-supported porous inorganic oxide and barium sulfate (BaSO), with supported or not-supported onto alumina, characterized in that at least a part of Rh is present independently from Ba inside a catalyst layer, and Rh—Ba deviation rate determined from EPMA analysis is 10% to 80%. It is preferable that supported amount of Rhodium is 0.05 g/L to 2.0 g/L, and amount of barium sulfate is 0.5 g/L to 25 g/L and 0.5 g/L to 15 g/L, in the case of being supported and not-supported onto alumina, respectively. 1. A catalyst for purifying exhaust gas comprising a Rhodium (Rh)-supported porous inorganic oxide and barium sulfate (BaSO) with supported or not-supported onto alumina , characterized in thatat least a part of Rh is present independently from Ba inside a catalyst layer, and Rh—Ba deviation rate determined from EPMA analysis is 10% to 80%.2. The catalyst for purifying exhaust gas according to claim 1 , characterized in that supported amount of Rhodium is 0.05 g/L to 2.0 g/L.3. The catalyst for purifying exhaust gas according to claim 1 , characterized in that amount of barium sulfate is 0.5 g/L to 25 g/L claim 1 , and 0.5 g/L to 15 g/L claim 1 , in the case of being supported and not-supported onto alumina claim 1 , respectively.4. The catalyst for purifying exhaust gas according to claim 1 , characterized in that supported amount of barium sulfate onto alumina is 5% by weight to 70% by weight.5. The catalyst for purifying exhaust gas according to claim 1 , characterized in that the porous inorganic oxide is one or more kind selected from alumina and zirconia-type composite oxide.6. The catalyst for ...

Подробнее
Номер записи: 47
16-02-2017 дата публикации

Catalyst For Selective Catalytic Reduction and Preparation Method Therefor

Номер: US20170043325A1
Автор: Cheon Jin Ho, Ha Heon Pil, KIM Sang Jin, Lee Kyung Ju
Принадлежит:

A catalyst for selective catalytic reduction is described. Cerium (III) sulfate (cerous sulfate) is bound to a support. The catalyst also includes vanadium oxide and cerium oxide. 1. A catalyst comprising:a support to which cerium (III) sulfate (cerous sulfate) is bound;vanadium oxide; andcerium oxide.2. The catalyst as claimed in claim 1 , further comprising antimony oxide.3. The catalyst as claimed in claim 1 , wherein when the catalyst denitrifies nitrogen oxides at 220 to 300° C. in the presence of a reducing agent claim 1 , the catalyst has a denitrification efficiency of 90% or more.4. A method for preparing a catalyst claim 1 , the method comprising:a) preparing a raw material catalyst comprising a support, vanadium oxide, and cerium oxide;b) heating the raw material catalyst to a temperature of 350 to 600° C.; and{'sub': '2', 'c) treating the heated raw material catalyst with sulfur dioxide (SO) to form cerium (III) sulfate on the support.'}5. The method as claimed in claim 4 , wherein in Step c) claim 4 , a concentration of sulfur dioxide at which the catalyst is treated is 50 to 1 claim 4 ,000 ppm.6. The method as claimed in claim 4 , wherein the raw material catalyst further comprises antimony oxide. The present disclosure relates to a catalyst for being applied to a selective catalytic reduction (SCR) method and a method for preparing the same.Nitrogen oxides (NO) are generated from a moving source such as a ship or an automobile or a fixed source such as a power station or an incinerator. Since these nitrogen oxides have been pointed out as one of the main causes of polluting air by forming acid rain and smog, various methods for removing nitrogen oxides have been proposed.Among them, examples of a method for removing nitrogen oxides emitted from fixed sources include a selective catalytic reduction for denitrifying nitrogen oxides by applying a titania-based catalyst composed of a support including titanium oxide and an active catalyst component ...

Подробнее
Номер записи: 48
16-02-2017 дата публикации

METHODS AND SYSTEMS FOR PRODUCING ISOSORBIDE FROM BIOMASS

Номер: US20170044177A1
Автор: WANG Yanqin
Принадлежит: EAST CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY

Methods and systems for producing isosorbide from biomass are disclosed. In one embodiment, a method of producing isosorbide from biomass may include contacting biomass, a catalyst mixture of a noble metal and a first solid acid, and hydrogen to form a first reaction mixture, and heating the first reaction mixture to form at least one intermediate compound. Further, the intermediate compound is contacted with a second solid acid to form a second reaction mixture, and heating the second reaction mixture to form isosorbide. 1. A method of producing isosorbide from a biomass , the method comprising:contacting biomass, a catalyst mixture of a noble metal and a first solid acid, and hydrogen to form a first reaction mixture;heating the first reaction mixture to form at least one intermediate compound;contacting the at least one intermediate compound with a second solid acid to form a second reaction mixture;heating the second reaction mixture to form isosorbide; andisolating the isosorbide.2. The method of claim 1 , wherein contacting the biomass comprises contacting a carbohydrate claim 1 , polysaccharide claim 1 , monosaccharide claim 1 , disaccharide claim 1 , cellulose claim 1 , lignin claim 1 , starch claim 1 , pentose claim 1 , or any combination thereof.3. The method of claim 1 , wherein heating the first reaction mixture comprises heating to form a depolymerization product of biomass selected from a monosaccharide claim 1 , a disaccharide claim 1 , sorbitol claim 1 , sorbitan claim 1 , or any combination thereof4. The method of claim 1 , further comprising removing the catalyst mixture from the at least one intermediate compound prior to contacting the at least one intermediate compound with the second solid acid.5. The method of claim 1 , wherein contacting the catalyst mixture comprises contacting the catalyst mixture comprising a noble metal including Au claim 1 , Pt claim 1 , Pd claim 1 , Ir claim 1 , Os claim 1 , Ag claim 1 , Rh claim 1 , Ru claim 1 , or any ...

Подробнее
Номер записи: 49
19-02-2015 дата публикации

On-Line Sulfiding Apparatus and Process

Номер: US20150051066A1
Автор: Monson John J., Tinger Robert G.
Принадлежит:

An apparatus and process for passivating catalysts wherein an inert gas is used to administer a precise, measurable amount of passivating agent to a catalyst in a substantially safer manner than conventional means. The inventive apparatus at least includes a first container comprising at least one inert gas, a second container comprising at least one passivating agent, and a reactor comprising at least one catalyst, the first container, second container, and reactor being fluidly connected by a plurality of conduits. The inventive process at least includes pressurizing a first container with an inert gas, filling a second container with passivating agent, providing a reactor containing a passivatable catalyst, mixing the inert with the passivating agent, forming a mixture of passivating agent and inert gas, and introducing the mixture of passivating agent and inert gas into the reactor. 1. An apparatus for passivating catalysts , consisting essentially of:a. a first container comprising at least one inert gas,b. a second container comprising at least one passivating agent, andc. a reactor comprising at least one catalyst,wherein the first container, second container, and reactor are fluidly connected by a plurality of conduits.2. The apparatus according to wherein the catalyst is a hydrogenation metal catalyst.3. The apparatus according to wherein the hydrogenation metal catalyst is selected from a group consisting of Pt claim 2 , Re claim 2 , Co claim 2 , Mo claim 2 , Pd claim 2 , Ni claim 2 , Fe claim 2 , Ir and mixtures thereof.4. The apparatus according to wherein the passivating agent is a sulfiding agent.5. The apparatus according to wherein the sulfiding agent is selected from the group consisting of carbon disulfide claim 4 , n-butyl mercaptan claim 4 , ethyl mercaptan claim 4 , di-tertiary nonyl polysulfide claim 4 , dimethyl disulfide claim 4 , dimethyl sulfide claim 4 , dimethyl sulfoxide claim 4 , hydrogen sulfide claim 4 , and mixtures thereof.6. The ...

Подробнее
Номер записи: 50
25-02-2016 дата публикации

CATALYST FOR CONVERSION OF PROPYLENE TO PRODUCT COMPRISING A CARBOXYLIC ACID MOIETY

Номер: US20160051968A1
Автор: Irshad Zaheer, Karim Khalid
Принадлежит:

In accordance with the invention, there is provided a novel catalyst composition comprising MoVGaPdNbXY, wherein X comprises La, Te, Ge, Zn, In, or W; and Y comprises Al or Si; wherein Mo, V, Ga, Pd, Nb, La, Te, Ge, Zn, In, W, Al, or Si are optionally present in combination with oxygen; wherein the catalyst does not comprise an additional element that acts as a catalyst in the conversion of a propylene to the product. Also, disclosed is a method for the conversion of a propylene to a carboxylic acid moiety by contacting the propylene with the disclosed catalyst. 1. A catalyst for the conversion of a propylene to a product comprising a carboxylic acid moiety , wherein the catalyst comprises:{'br': None, 'MoVGaPdNbXY,'} X comprises La, Te, Ge, Zn, In, or W; and', 'Y comprises Al or Si;, 'wherein'} 'one or more of Mo, V, Ga, Pd, Nb, La, Te, Ge, Zn, In, W, Al, and/or Si are optionally present in combination with oxygen;', 'wherein'}wherein the catalyst does not comprise an additional element that acts as a catalyst in the conversion of the propylene to the product.2. The catalyst according to claim 1 , wherein the product does not comprise substantially any acrolein.3. The catalyst of claim 1 , wherein the product does not comprise any acrolein.4. The catalyst of claim 1 , wherein the additional element is a metal.5. The catalyst of claim 1 , wherein the additional element comprises Sb or Cs claim 1 , or a combination thereof.6. A catalyst for the conversion of a propylene to a product comprising a carboxylic acid moiety claim 1 , wherein the catalyst consists essentially of:{'br': None, 'MoVGaPdNbXY,'} X comprises La, Te, Ge, Zn, In, or W; and', 'Y comprises Al or Si;, 'wherein'} 'Mo, V, Ga, Pd, Nb, La, Te, Ge, Zn, In, W, Al, and/or Si are optionally present in combination with oxygen.', 'wherein'}7. The catalyst of claim 6 , wherein the catalyst is present on a support.8. The catalyst of claim 6 , wherein the catalyst comprises:{'br': None, 'sub': a', 'b', 'c', 'd', ' ...

Подробнее
Номер записи: 51
25-02-2016 дата публикации

Naphtha Reforming Catalyst and Preparation Method Thereof

Номер: US20160051969A1
Автор: Wang Jiaxin, WANG TAO, ZANG Gaoshan, Zhang Daqing, Zhang Yuhong
Принадлежит:

A naphtha reforming catalyst, comprising an alumina support and following components with the content calculated on the basis of the support: VIII group metal 0.1-2.0% by weight, VIM group metal 0.1-3.0% by weight, sulfate ion 0.45-3.0% by weight, and halogen 0.5-3.0% by weight. The catalyst is used in a naphtha reforming reaction without presulfurization and has a high aromatization activity and a selectivity. 2. The catalyst according to claim 1 , characterized in that said catalyst further comprises 0.01% to 3.0% by weight claim 1 , based on the support claim 1 , of one or more rare earth elements selected from the group consisting of ytterbium claim 1 , yttrium claim 1 , europium and cerium.3. The catalyst according to claim 1 , characterized in that said VIII group metal is selected from the group consisting of platinum claim 1 , ruthenium claim 1 , rhodium and/or iridium; the VIIB group metal is selected from the group consisting of rhenium; and the halogen is selected from chlorine.4. The catalyst according to claim 1 , characterized in that said catalyst has content of sulfate ions of 0.45-2.0% by weight.5. The catalyst according to claim 1 , characterized in that a specific surface area of said catalyst is from 180 m/g to 300 m/g claim 1 , preferably from 210 m/g.6. The catalyst according to claim 1 , characterized in that said sulfate ion-containing alumina support has content of sodium of from 0.01% to 0.03% by weight.7. The catalyst according to claimcharacterized in that in said catalyst claim 1 , the ratio of the pore volume of the pores with a pore radius between 3 nm and 10 nm to the total pore volume is from 70% to 85% ; the ratio of the pore volume of the pores with a pore radius smaller than 3 nm to the total pore volume is not more than 25%; and the ratio of the pore volume of the pores with a pore radius larger than 10 nm to the total pore volume is more than 5% claim 1 , preferably from 5% to 10%.8. A method for preparation of the catalyst ...

Подробнее
Номер записи: 52
14-02-2019 дата публикации

LEAD SULFIDE AS ALKANE DEHYDROGENATION CATALYST

Номер: US20190047921A1
Автор: HØJLUND NIELSEN Poul Erik, LEMUS-YEGRES Lived J., NIELSEN Rasmus Munksgård
Принадлежит: Haldor Topsoe A/S

A catalyst for the dehydrogenation of alkanes to alkenes comprises lead(II) sulfide (PbS) as catalytically active material supported on a carrier. The dehydrogenation is carried out at a temperature between 500 and 650° C. and at a pressure from 0.5 bar below ambient pressure to 5 bar above ambient pressure. 1. A catalyst for the dehydrogenation of alkanes to alkenes , said catalyst comprising a catalytically active material supported on a carrier , wherein the catalytically active material is lead(II) sulfide (PbS) , and wherein the catalyst is regenerated in several steps.2. Catalyst according to claim 1 , wherein the steps for regeneration comprise (a) oxidation in dilute air claim 1 , (b) conversion into the corresponding sulfate claim 1 , and (c) conversion back to the sulfide by reduction in dilute hydrogen containing some hydrogen sulfide.3. Catalyst according to claim 2 , wherein the oxidation in step (a) is carried out at a temperature between 350 and 750° C.4. Catalyst according to claim 1 , wherein the carrier is treated with a dilute alkali compound and subsequently washed to remove acid sites.5. Catalyst according to claim 4 , wherein the dilute alkali compound is potassium carbonate or any other potassium compound.6. A process for the dehydrogenation of alkanes to the corresponding unsaturated alkenes and hydrogen (H) comprising contacting the alkane with a catalyst according to supported on a carrier claim 1 , said catalyst comprising lead(II) sulfide (PbS).7. Process according to claim 6 , wherein the dehydrogenation is carried out at a temperature between 500 and 650° C.8. Process according to claim 6 , wherein the dehydrogenation is carried out at a pressure from 0.5 bar below ambient pressure to 5 bar above ambient pressure.9. Process according to claim 8 , wherein the dehydrogenation is carried out at ambient pressure or at a pressure from 0.5 bar below ambient pressure up to ambient pressure.10. Process according to claim 6 , wherein the feed ...

Подробнее
Номер записи: 53
23-02-2017 дата публикации

OXIDATIVE DEHYDROGENATION CATALYST

Номер: US20170050178A1
Автор: Drag Hanna, Finashina Elena Dmitrievna, Gao Xiaoliang, Kucherov Aleksey Victorovich, Kustov Leonid Modestovich, Simanzhenkov Vasily, Sullivan David Jeffrey
Принадлежит: NOVA CHEMICALS (INTERNATIONAL) S.A.

Oxidative dehydrogenation catalysts comprising MoVNbTeO having improved consistency of composition and a 25% conversion of ethylene at less than 420° C. and a selectivity to ethylene above 95% are prepared by treating the catalyst precursor with HOin an amount equivalent to 0.30-2.8 mL HOof a 30% solution per gram of catalyst precursor prior to calcining. 1. A method to improve the consistency of an oxidative dehydrogenation catalyst of the empirical formula (measured by PIXE);{'br': None, 'sub': 1.0', '0.22-0.33', '0.10-0.16', '0.15-0.19', 'd, 'MoVTeNbO'}where d is a number to satisfy the valence of the oxide{'sub': 2', '2', '2', '2, 'comprising treating a precursor prior to calcining with HOin an amount equivalent to 0.30-2.8 mL HOof a 30% solution per gram of catalyst precursor.'}2. The method according to claim 1 , wherein the precursor is prepared by a method comprising:i) forming an aqueous solution of ammonium heptamolybdate (tetrahydrate) and telluric acid at a temperature from 30° C. to 85° C. and adjusting the pH of the solution to 6.5 to 8.5 with a nitrogen containing base to form soluble salts of the metals;ii) preparing a aqueous solution of vanadyl sulphate at a temperature from room temperature to 80° C.;iii) mixing the solutions from steps i) and ii) together;{'sub': 2', '4', '3, 'iv) slowly adding a solution of niobium monoxide oxalate (NbO(COH)) to the solution of step iii) to form a slurry;'}v) heating the resulting slurry in an autoclave under an inert atmosphere at a temperature from 150° C. to 190° C. for not less than 10 hours.3. The method according to claim 2 , the resulting solid from step v) is filtered and washed with deionized water claim 2 , and drying the washed solid for a time from 4 to 10 hours at a temperature from 70 to 100° C.4. The method according to claim 3 , further comprising calcining the catalyst in an inert atmosphere at a temperature from 200° C. to 600° C. for a time from 1 to 20 hours.5. The method according to claim 4 ...

Подробнее
Номер записи: 54
21-02-2019 дата публикации

SULFIDE-BASED ALKANE DEHYDROGENATION CATALYSTS

Номер: US20190054453A1
Автор: HØJLUND NIELSEN Poul Erik, LEMUS-YEGRES Lived J., NIELSEN Rasmus Munksgård
Принадлежит: Haldor Topsoe A/S

A catalyst for the dehydrogenation of alkanes to alkenes comprises a catalytically active material supported on a carrier, wherein the catalytically active material is a metallic sulfide (MeS) comprising Fe, Co, Ni, Cu, Mo or W or any combination of two or more metals selected from Pb, Sn, Zn, Fe, Co, Ni, Cu, Mo and W. The catalyst is regenerated in several steps. The dehydrogenation is carried out at a temperature between 450 and 650° C. and a pressure from 0.9 bar below ambient pressure to 5 bar above ambient pressure. 1. A catalyst for the dehydrogenation of alkanes to alkenes , said catalyst comprising a catalytically active material supported on a carrier , wherein the catalytically active material comprises a metallic sulfide (MeS) , which is a semiconductor , and wherein the catalyst is regenerated in several steps.2. The catalyst according to claim 1 , wherein the metal of the metallic sulfide comprises Fe claim 1 , Co claim 1 , Ni claim 1 , Cu claim 1 , Mo or W or any combination of two or more metals selected from Pb claim 1 , Sn claim 1 , Zn claim 1 , Fe claim 1 , Co claim 1 , Ni claim 1 , Cu claim 1 , Mo and W.3. The catalyst according to claim 1 , wherein the steps for regeneration comprise oxidation in dilute air claim 1 , conversion of the sulfide into the corresponding sulfate and conversion back to the sulfide by reduction in dilute hydrogen containing some hydrogen sulfide.4. The catalyst according to claim 3 , wherein the oxidation in dilute air is carried out at a temperature between 350 and 750° C.5. The catalyst according to claim 1 , wherein the carrier is treated with a dilute alkali compound and subsequently washed to remove acid sites.6. The catalyst according to claim 5 , wherein the dilute alkali compound is potassium carbonate or any other potassium compound.7. A process for the dehydrogenation of alkanes to the corresponding unsaturated alkenes and hydrogen (H) comprising contacting the alkane with a catalyst according to claim 1 , said ...

Подробнее
Номер записи: 55
15-05-2014 дата публикации

Hydroconversion Multi-Metallic Catalysts and Method for Making Thereof

Номер: US20140135207A1
Автор: Alexander E. Kuperman, Horacio Trevino, Jinyi Han, Theodorus Ludovicus Michael Maesen
Принадлежит: Chevron USA Inc

The invention relates to a self-supported mixed metal sulfide (MMS) catalyst for hydrotreating hydrocarbon feedstock and to a method for preparing the catalyst. The MMS catalyst is characterized as having a BET surface area of at least 20 m 2 /g and a pore volume of at least 0.05 cm 3 /g. In one embodiment, the MMS catalyst is also characterized as having a multi-phased structure comprising five phases: a molybdenum sulfide phase, a tungsten sulfide phase, a molybdenum tungsten sulfide phase, an active nickel phase, and a nickel sulfide phase.

Подробнее
Номер записи: 56
04-03-2021 дата публикации

METHOD FOR PREVENTING OR REDUCING GROWTH OF A MICROORGANISM ON A SURFACE

Номер: US20210061670A1
Автор: NAWAZ Muhammad, QURESHI Faiza
Принадлежит: Imam Abdulrahman Bin Faisal University

Methods of synthesizing BiS—CdS particles in the form of spheres as well as properties of these BiS—CdS particles are described. Methods of photocatalytic degradation of organic pollutants employing these BiS—CdS particles and methods of preventing or reducing microbial growth on a surface by applying these BiS—CdS particles in the form of a solution or an antimicrobial product onto the surface are also specified. 17-. (canceled)8. A method for preventing or reducing growth of a microorganism on a surface , the method comprising:{'sub': 2', '3, 'applying BiS—CdS particles onto the surface;'} [{'sub': 2', '3, 'the BiS—CdS particles comprise bismuth(III) sulfide and cadmium(II) sulfide;'}, {'sub': 2', '3, 'the BiS—CdS particles are in the form of spheres; and'}, {'sub': 2', '3, 'the BiS—CdS particles are in contact with the surface for 1-24 hours.'}], 'wherein9. The method of claim 8 , wherein an atomic ratio of bismuth to cadmium in the BiS—CdS particles is in a range of 0.5:1 to 4:1 claim 8 , and an atomic ratio of sulfur to bismuth in the BiS—CdS particles is in a range of 3:2 to 8:1.10. The method of claim 8 , wherein the BiS—CdS particles have a BET surface area of 5-25 m/g claim 8 , a pore size of 10-50 nm claim 8 , and a pore volume of 0.02-0.2 cm/g.11. The method of claim 8 , wherein the BiS—CdS particles are applied onto the surface as a solution comprising a solvent and 1 μg/mL to 50 mg/mL of the BiS—CdS particles relative to a total volume of the solution.12. The method of claim 11 , wherein the solvent comprises dimethyl sulfoxide and water.13. The method of claim 8 , wherein the BiS—CdS particles are applied onto the skin of a subject as an antimicrobial cream comprising 0.01 wt %-50 wt % of the BiS—CdS particles relative to a total weight of the antimicrobial cream.14Acinetobacter baumannii, Enterobacter aerogenes, Escherchia coli, Klebsiella oxytocaKlebsiella pneumoniae.. The method of claim 8 , wherein the microorganism is at least one gram-negative ...

Подробнее
Номер записи: 57
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 ...

Подробнее
Номер записи: 58
03-03-2016 дата публикации

Microbial Fuel Cell for Generating Electricity, and Process for Producing Feedstock Chemicals Therefor

Номер: US20160064758A1
Автор: Lalman Jerald A., Shewa Wudneh Ayele
Принадлежит:

A method of preparing feedstock chemical for use in a microbial fuel cell comprises admixing a sodium lignosulfate solution with a catalyst to form a chemical slurry, irradiating the slurry with ultraviolet electromagnetic energy to effect photocatalytic degradation of the sodium lignosulfate lower weight molecular compounds selected from the group consisting of methanol, formic acid, acetic acid C-2 alcohols and C-4 alcohols as part of a photocatalyzed mixture, and separating said catalyst from said photocatalyzed mixture to form a feedstock concentrate. 1. A method of preparing feedstock chemical for use in a microbial fuel cell , comprising ,admixing a source mixture composing a lignin source material with a catalyst to form a chemical source slurry,irradiating said source slurry with electromagnetic energy at a wavelength selected to effect photocatalytic degradation of said lignin source material to short chain fatty acid and/or carbon chemicals as part of a photocatalyzed mixture,separating said metal oxide from said photocatalyzed mixture, andseparating from one or more residual fatty acids from the catalyzed mixture to form a concentrate, andfeeding said concentrate to said microbial fuel cell.2. The method as claimed in claim 1 , wherein the fuel cell comprises a single chamber air-cathode microbial fuel cell claim 1 , wherein said concentrate is fed into said microbial fuel cell in a substantially continuous feed process claim 1 , and operating said fuel cell to bioelectrically convert said concentrate into electricity whilst maintaining said concentrate at a temperature selected at between about 35° C. and 40° C.3. The method as claimed in claim 2 , wherein said metal oxide catalyst comprises TiOhaving an average particle size selected at from 5 nm to less than about 300 nm claim 2 , and the step of separating said metal oxide comprises physically removing said metal oxide catalyst from said photocatalyzed mixture by centrifuge.4. The method as claimed in ...

Подробнее
Номер записи: 59
10-03-2016 дата публикации

DENITRATION CATALYST AND METHOD FOR PRODUCING SAME

Номер: US20160067683A1
Автор: Masuda Tomotsugu, NOCHI Katsumi
Принадлежит: Mitsubishi Hitachi Power Systems, Ltd.

Provided is a denitration catalyst with an improved wear resistance capable of stably reducing and removing nitrogen oxides in flue gases for a long period of time and a production method therefor. A denitration catalyst obtained by having a honey comb molded body that contains at least titanium oxide and vanadium pentoxide support magnesium surface, and wherein the peak intensity ratio of the first peak of the magnesium sulfate to the first peak of the titanium oxide in X-ray diffraction is 0.05-0.15, the content of the magnesium sulfate increases by 6-22% by mass, the pore volume is 0.17-0.40 cc/g, and the specific surface area is 33-100 m/g. 1. A denitration catalyst in which magnesium sulfate is carried on a honeycomb molded body which at least includes titanium oxide and vanadium pentoxide ,wherein a peak strength ratio between a first peak for the titanium oxide and a first peak for the magnesium sulfate observed by an X-ray diffraction method is 0.06 to 0.15,a content of the magnesium sulfate is increased by 6% by mass to 22% by mass,a pore volume of the denitration catalyst is 0.17 cc/g to 0.40 cc/g, and{'sup': 2', '2, 'a specific surface area of the denitration catalyst is 33 m/g to 100 m/g.'}2. The denitration catalyst according to claim 1 , wherein the content of magnesium in portions close to a surface of the denitration catalyst measured by electron probe micro analysis (EPMA) is more than a content of magnesium in a center of the denitration catalyst.3. A method of producing a denitration catalyst comprising the steps of:a magnesium sulfate carrying step of carrying magnesium sulfate increased by 6% by mass to 22% by mass on the honeycomb molded body by immersing a honeycomb molded body which at least includes titanium oxide and vanadium pentoxide in a 30° C. to 70° C. aqueous solution of magnesium sulfate; anda firing step of firing the honeycomb molded body at 510° C. to 550° C., which is performed after the magnesium sulfate carrying step.4. The ...

Подробнее
Номер записи: 60
10-03-2016 дата публикации

SUPPORTED CATALYST FOR PRODUCTION OF UNSATURATED CARBOXYLIC ACIDS FROM ALKANES

Номер: US20160068462A1
Автор: Al Jodai Abdulaziz, Karim Khalid
Принадлежит:

The present disclosures and inventions relate to a supported catalyst composition for the catalytic oxidation of a hydrocarbon such as propane with oxygen or air, in the presence of a catalyst composition comprising a support material and a mixed metal composition comprising metals in the molar ratios described by the formula MoVGaPdNbZ, wherein the support material is neutral or oxidative. 1. A catalyst composition comprising a support material and a mixed metal composition comprising metals in the molar ratios described by the formula{'br': None, 'i': a', 'b', 'c', 'd', 'e', 'f,, 'MoVGaPdNbZ'}wherein a is 1,wherein b is from 0.01 to 0.9,wherein c is from than 0 to 0.2,wherein d is from 0.0000001 to 0.2,wherein e is greater than 0 to 0.2,wherein Z comprises La, Te, Ge, Zn, Si, In, or W, or a mixture thereof, andwherein f is greater than 0 to 0.5,wherein the support material is neutral or oxidative.2. The catalyst composition of claim 1 , wherein the support material comprises AlO claim 1 , SiO claim 1 , CeO claim 1 , TiO claim 1 , or ZrO claim 1 , or a mixture thereof.3. The catalyst composition of claim 1 , wherein the support material comprises CeO.4. The catalyst composition of claim 1 , wherein the support material comprises acetate-SiO claim 1 , low surface area TiO claim 1 , high surface area TiO claim 1 , acetate-AlO claim 1 , acetate-ZrO claim 1 , or actetate-CeO claim 1 , or a mixture thereof.5. The catalyst composition of claim 1 , wherein the support material is oxidative.6. The catalyst composition of claim 1 , wherein the support material is neutral.7. The catalyst composition of claim 1 , wherein the support material is a microporous or mesoporous support material.8. The catalyst composition of claim 1 , wherein the catalyst composition has a particle diameter size from 20 μm to 500 μm.9. The catalyst composition of claim 1 , wherein Z comprises Te.10. The catalyst composition of claim 1 , wherein the catalyst composition is stable to at least 600° C. ...

Подробнее
Номер записи: 61
11-03-2021 дата публикации

Method for preparing sulfated metal oxide catalyst for chlorination, and chlorination method using sulfated metal oxide catalyst

Номер: US20210069689A1
Автор: Ho Jeong Chae, Hyung Ju Kim, Jip KIM, Young Min Kim
Принадлежит: Korea Research Institute of Chemical Technology KRICT

The present invention relates to a method for preparing a sulfated metal oxide catalyst for chlorination, and a method for producing a reaction product containing methyl chloride (CH 3 Cl) by using the sulfated metal oxide catalyst. A sulfated zirconia catalyst and a sulfated tin oxide catalyst are disclosed as the sulfated metal oxide catalyst for chlorination.

Подробнее
Номер записи: 62
17-03-2016 дата публикации

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

Номер: US20160074841A1
Автор: Abdulaziz AL JODAI, Khalid Karim
Принадлежит: Saudi Basic Industries Corp

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

Подробнее
Номер записи: 63
05-03-2020 дата публикации

PROCESS FOR PRODUCING CHLOROTRIFLUOROETHYLENE

Номер: US20200071247A1
Автор: Tung Hsueh Sung, WANG HAIYOU
Принадлежит:

The present invention relates, at least in part, to a process for making chlorotrifluoroethylene (CFO-1113) from 1,2-dichloro-1,1,2-trifluoroethane (HCFC-123a). In certain aspects, the process includes dehydrochlorinating 1,2-dichloro-1,1,2-trifluoroethane (HCFC-123a) in the presence of a catalyst selected from the group consisting of (i) one or more metal halides; (ii) one or more halogenated metal oxides; (iii) one or more zero-valent metals or metal alloys; (iv) combinations thereof. 1. A process for producing chlorotrifluoroethylene (CFO-1113) comprising: dehydrochlorinating 1 ,2-dichloro-1 ,1 ,2-trifluoroethane (HCFC-123a) in the presence of a catalyst selected from the group consisting of (i) one or more metal halides; (ii) one or more halogenated metal oxides; (iii) one or more zero-valent metals or metal alloys; (iv) combinations thereof to produce a reaction product comprising CFO-1113.2. The process of wherein the conversion of HCFC-123a is at least about 5 wt. % claim 1 , the selectivity to chlorotrifluoroethylene is at least about 70 wt. % claim 1 , and said reaction product comprises less than about 10 wt. % of CFO-1112.3. (canceled)4. (canceled)5. (canceled)6. The process of wherein a substantial portion of the dehydrochlorinating step is carried out at a temperature of from about 480° C. to about 550° C.7. The process of wherein catalyst comprises a mono-valent metal halide claim 1 , a bi-valent metal halide claim 1 , a tri-valent metal halide claim 1 , or a combination thereof.8. The process of wherein catalyst comprises a mono-valent metal halide claim 1 , a bi-valent metal halide or a combination thereof.9. The process of wherein the catalyst comprises at least one metal halide wherein the component metal is selected from the group consisting of Cr claim 1 , Fe claim 1 , Mg claim 1 , Ca claim 1 , Ni claim 1 , Zn claim 1 , Pd claim 1 , Li claim 1 , Na claim 1 , K claim 1 , and Cs claim 1 , and the component halogen is selected from the group ...

Подробнее
Номер записи: 64
24-03-2016 дата публикации

ALKYLENE OXIDE CATALYST AND USE THEREOF

Номер: US20160082423A9
Автор: Bhasin Madan M., Liu Albert C., Natal Manuel A. W., Soo Hwaili
Принадлежит:

A supported silver catalyst and use thereof in a process for producing an alkylene oxide, such as ethylene oxide, by the direct oxidation of an alkylene with oxygen or an oxygen-containing gas, wherein the catalyst provides improved stability and improved resilience to reactor upsets and timely recovery to substantially pre-upset levels of catalyst activity and/or efficiency. In some embodiments, the catalyst also exhibits improved activity. A catalyst capable of producing ethylene oxide at a selectivity of at least 87 percent while achieving a work rate of at least 184 kg/h/mat a temperature of no greater than 235° C. when operated in a process where the inlet feed to a reactor containing the catalyst comprises ethylene, oxygen, and carbon dioxide, wherein the concentration of carbon dioxide in the inlet feed is greater than or equal to 2 mole percent. 151-. (canceled)53. The supported silver catalyst of prepared on an alumina-containing carrier claim 52 , the carrier comprising greater than about 90 weight percent alpha-alumina and less than about 30 ppm acid-leachable alkali metals by weight claim 52 , the weight percent of the alumina and the concentration of the acid-leachable alkali metals being calculated on the weight of the carrier claim 52 , wherein the acid-leachable alkali metals are selected from lithium claim 52 , sodium claim 52 , potassium claim 52 , and mixtures thereof; the carrier having deposited thereon: silver in an amount greater than about 25 weight percent claim 52 , based on the weight of the catalyst; cesium in an amount from about 0.005 to about 0.30 percent by weight claim 52 , and sodium in an amount from about 10 ppm to about 200 ppm by weight and optional additional solid promoters claim 52 , the amounts of the deposited cesium and sodium and optional additional solid promoters being calculated on the weight of the catalyst.54. The supported silver catalyst of prepared on an alumina-containing carrier claim 52 , the carrier comprising ...

Подробнее
Номер записи: 65
23-03-2017 дата публикации

Inherently safe odh operation

Номер: US20170081261A1
Автор: Aleksey Victorovich Kucherov, Edward Christopher Foy, Elena Dmitrievna Finashina, Leonid Modestovich Kustov, Vasily Simanzhenkov, XIAOLIANG Gao
Принадлежит: Nova Chemicals International SA

In the operation of an oxidative dehydrogenation (ODH) process, it is desirable to remove oxygen in the product stream for a number of reasons, including to reduce oxidation of the product. This may be achieved by having several pre-reactors upstream of the main reactor having a catalyst system containing labile oxygen. The feed passes through one or more reactors saturated with labile oxygen. When the labile oxygen is consumed through a valve system, the pre-reactor accepts product from the main reactor and complexes reactive oxygen in the product stream until the catalyst system is saturated with labile oxygen. Then the reactor becomes a pre-reactor and another pre-reactor becomes a scavenger.

Подробнее
Номер записи: 66
21-03-2019 дата публикации

Exhaust gas purification catalyst

Номер: US20190083931A1
Автор: Chihiro KASUYA, Koki Yanagawa, Satoshi Matsueda, Yu SAKURADA
Принадлежит: Cataler Corp

An exhaust gas purification catalyst, characterized by having a catalyst layer containing palladium, rhodium, and alumina, which supports a sulfate of an alkaline-earth metal selected from barium sulfate and strontium sulfate, and the correlation coefficients ρPd,AE and ρRh,AE calculated from the characteristic X-ray intensity measured using an electron beam micro-analyzer for the palladium, rhodium, and alkaline-earth metal being +0.75 to +1.00 and 0.00 to +0.25, respectively, using 350 points as measurement points obtained by equally dividing the catalyst layer into 351 parts in the thickness direction on a virtual straight line that runs through the catalyst layer in the thickness direction.

Подробнее
Номер записи: 67
29-03-2018 дата публикации

Use of Novel catalyst and method for treating PCB inked polymer waste by the novel catalyst

Номер: US20180086892A1
Автор: CHEN Chien-Tien
Принадлежит:

A novel catalyst, a use thereof and a method for treating PCB inked waste by using the same are disclosed. The catalyst of the present disclosure is represented by the following formula (I): 1. A catalyst , representing by the following formula (I):{'br': None, 'sub': 'a', 'sup': m+', 'n−, '[M(O)]X\u2003\u2003(I)'}wherein M is an element of Group IB, Group IVB, Group VB, Group VIB, Group VIIB or Group VIIIB;{'sub': 2', 'n', '3', '12', '25', '2', '6', '4', '2', 'n', '4', '3', '2', '25, 'X is Cl, Br, I, OAc, OC(O)(CF)CF, OC(O)CH, [(OSOCH-CHCH)], OTf, OTs, SO, SOC Hor acetylacetonate (acac);'}a is an integral of 0 to 3;m is an integral of 2 to 4; andn is an integral of 1 or 2.2. The catalyst of claim 1 , wherein a is 0 claim 1 , and M is Ti claim 1 , Zr claim 1 , Hf claim 1 , V claim 1 , Fe claim 1 , Cu or Mn.3. The catalyst of claim 1 , wherein M(O)is VO claim 1 , VO claim 1 , ZrO claim 1 , HfO claim 1 , WO claim 1 , MoO claim 1 , CrOor ReO.4. A use of a catalyst for degrading inks or acylating or recycling polymers claim 1 , wherein the catalyst is representing by the following formula (I):{'br': None, 'sub': 'a', 'sup': m+', 'n−, '[M(O)]X\u2003\u2003(I)'}wherein M is an element of Group IB, Group IVB, Group VB, Group VIB, Group VIIB or Group VIIIB;{'sub': 2', 'n', '3', '12', '25', '2', '6', '4', '2', 'n', '4', '3', '12', '25, 'X is Cl, Br, I, OAc, OC(O)(CF)CF, OC(O)CH, [(OSOCH-CHCH)], OTf, OTs, SO, SOCHor acetylacetonate (acac);'}a is an integral of 0 to 3;m is an integral of 2 to 4; andn is an integral of 1 or 2.5. A method for treating a PCB inked polymer waste claim 1 , comprising the following steps: {'br': None, 'sub': 'a', 'sup': m+', 'n−, '[M(O)]X\u2003\u2003(I)'}, 'mixing a PCB inked polymer waste, a catalyst representing by the following formula (I), a reagent and a first solvent to obtain a mixturewherein M is an element of Group IB, Group IVB, Group VB, Group VIB, Group VIIB or Group VIIIB;{'sub': 2', 'n', '3', '12', '25', '2', '6', '4', '2', 'n', '4', '3 ...

Подробнее
Номер записи: 68
02-04-2015 дата публикации

PROCESS FOR SYNTHESIS OF ALCOHOLS

Номер: US20150094510A1
Автор: Hidalgo Vivas Angelica, JOENSEN Finn
Принадлежит: Haldor Topsoe A/S

Process and catalyst for upgrading gasoline comprising durene (1,2,4,5-tetramethylbenzene) and pseudodocumene, the process comprises hydroisomerization of durene (1,2,4,5-tetramethylbenzene) and pseudocumene (1,2,4-trimethylbenzene) contained in the gasoline in presence of a catalyst comprising a sulfided base metal supported on an acidic carrier, thereby converting durene (1,2,4,5-tetramethylbenzene) to isodurene (1,2,4,5-tetramethylbenzene) and prehnitene (1,2,3,4-tetramethylbenzene) and converting pseudocumene (1,2,4-trimethylbenzene) to mesitylene (1,3,5-trimethylbenzene). 1. A process for upgrading gasoline comprising durene (1 ,2 ,4 ,5-tetramethylbenzene) and pseudodocumene (1 ,2 ,4-trimethylbenzene) , the process comprises hydroisomerization of durene and pseudocumene contained in the gasoline in presence of hydrogen and a catalyst comprising a sulfided base metal supported on an acidic carrier , thereby converting durene (1 ,2 ,4 ,5-tetramethylbenzene) to isodurene (1 ,2 ,3 ,5-tetramethylbenzene) and prehnitene (1 ,2 ,3 ,4-tetramethylbenzene) and converting pseudocumene (1 ,2 ,4-trimethylbenzene) to mesitylene (1 ,3 ,5-trimethylbenzene).2. The process of claim 1 , wherein the sulfided metal in the catalyst comprises nickel.3. The process of claim 2 , wherein the content of nickel is 0.5 to 20 wt %.4. The process of claim 1 , wherein the acidic carrier comprises a zeolite.5. The process of claim 4 , wherein the zeolite has a Si02/A1203 ratio in the range of 15 to 300.6. The process of claim 4 , wherein the zeolite comprises ZSM-5.7. The process of claim 1 , wherein the acidic carrier further comprises alumina.8. The process of claim 1 , wherein the catalyst comprises sulfided nickel supported on a mixture of ZSM-5 and alumina.9. The process of claim 8 , wherein the catalyst is composed of 1-5 wt % nickel claim 8 , 50-70 wt % ZSM-5 and 50-30 wt % alumina binder.10. The process of claim 1 , comprising the further step of separating a light fraction from the ...

Подробнее
Номер записи: 69
07-04-2016 дата публикации

CATALYSTS AND METHODS FOR ALCOHOL DEHYDRATION

Номер: US20160096792A1
Автор: Barton David G., Chojecki Adam, Cieszlak Adam S., Elowe Paul R., Hook Bruce D., Jewell Dennis W., Kilos Beata A.
Принадлежит:

Provided is a method for preparing a diaryl ether compound through the dehydration of an aromatic alcohol compound in the presence of a halogenated rare earth element oxide catalyst, wherein the used dehydration catalyst may be regenerated by a halogenation step. The rare earth element oxide is an oxide of a light rare earth element, an oxide of a medium rare earth element, an oxide of a heavy rare earth element, an oxide of yttrium, or a mixtures of two or more thereof. 1. A method for preparing a diaryl ether compound , the method comprising:providing a reaction vessel having loaded therein a dehydration catalyst comprising a halogenated rare earth element oxide;dehydrating an aromatic alcohol compound over the dehydration catalyst to form a diaryl ether compound; andregenerating the dehydration catalyst by halogenating it with a halogen source.2. The method of wherein the dehydration catalyst is further regenerated through an oxidative treatment step by being heated at elevated temperature in the presence of a gas containing oxygen.3. The method of wherein the halogen source provides chlorine atoms or fluorine atoms.4. The method of wherein the rare earth element oxide is an oxide of a light rare earth element claim 1 , an oxide of a medium rare earth element claim 1 , an oxide of a heavy rare earth element claim 1 , an oxide of yttrium claim 1 , or mixtures of two or more thereof.5. The method of wherein the rare earth element oxide is an oxide of lanthanum claim 1 , praseodymium claim 1 , neodymium 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 , yttrium claim 1 , or mixtures of two or more thereof.6. The method of wherein the rare earth element oxide is an oxide of yttrium.7. The method of wherein the dehydration of the aromatic alcohol compound is conducted at a temperature from 200 to 800° C.8. The method of ...

Подробнее
Номер записи: 70
07-04-2016 дата публикации

Production of products from natural resources

Номер: US20160096796A1
Автор: Khalid Karim, Labeeb Chaudhary AHMED
Принадлежит: Saudi Basic Industries Corp

The method disclosed herein relates to two stage catalytic processes for converting syngas to acetic acid, acrylic acid and/or propylene. More specifically, the method described and claimed herein relate to a method of producing acrylic acid and acetic acid comprising the steps of: a) providing a feedstream comprising syngas; b) contacting the feedstream with a first catalyst to produce a first product stream comprising C 2 -C 3 olefins and/or C 2 -C 3 paraffins; and c) contacting the first product stream with oxygen gas and a second catalyst, thereby producing a second product stream comprising acrylic acid and acetic acid, wherein there is no step for separating the components of the first product stream before the first product stream is contacted with the second catalyst.

Подробнее
Номер записи: 71
26-06-2014 дата публикации

PHOTO-CATALYTIC SYSTEMS FOR THE PRODUCTION OF HYDROGEN

Номер: US20140174905A1
Автор: LANDRY Daniel
Принадлежит: SUNPOWER TECHNOLOGIES LLC

A system and method for splitting water to produce hydrogen and oxygen employing sunlight energy are disclosed. Hydrogen and oxygen may then be stored for later use as fuels. The system and method use inorganic capping agents that cap the surface of semiconductor nanocrystals to form photocatalytic capped colloidal nanocrystals, which may be deposited on a substrate and treated to form a photoactive material. The photoactive material may be employed in the system to harvest sunlight and produce energy necessary for water splitting. The system may also include elements necessary to collect, transfer and store hydrogen and oxygen, for subsequent transformation into electrical energy. 1. A method for producing photocatalytic capped colloidal nanocrystals , comprisingreacting a semiconductor nanocrystals precursor and an organic solvent to produce organic capped semiconductor nanocrystals; dissolving the inorganic capping agent in a first solvent to produce a first solution;', 'dissolving the organic capped nanocrystals in a second solvent to produce a second solution;', 'combining the first solution and the second solution in a single vessel;', 'reacting the first solution with the second solution, whereby a portion of the organic capping agent is displaced by inorganic capping agent;', 'continuing reacting until the combination reaches equilibrium;, 'substituting an inorganic capping agent for the organic capping agent, including'}allowing the combination to stabilize; andprecipitating photocatalytic capped colloidal nanocrystals from the combination.2. The method of claim 1 , wherein the organic solvent is a stabilizing organic ligand.3. The method of claim 1 , wherein the organic solvent is trioctylphosphine oxide.4. The method of claim 1 , wherein the organic solvent is one of a long-chain aliphatic amines claim 1 , long-chain aliphatic phosphines claim 1 , long-chain aliphatic carboxylic acids claim 1 , long-chain aliphatic phosphonic acids and mixtures thereof.5. ...

Подробнее
Номер записи: 72
28-03-2019 дата публикации

EFFICIENT IN-SITU CATALYST SULFIDING METHODS AND SYSTEMS

Номер: US20190091678A1
Автор: ROBINSON James Maxie, ROBINSON James Michael
Принадлежит:

A system and method is disclosed for efficiently sulfiding metal catalyst resident in a reactor vessel comprises a sulfiding module and a hydrogen sulfide detection module and a remote computer all arranged and configured to communicate wirelessly and to allow remote control and monitoring of the modules and sulfiding process. 1. A system for sulfiding a metal catalyst , comprising: a sulfur product inlet and outlet,', 'a sulfur product measurement device,', 'a sulfur product pressurization device having a variably controllable output,', 'a controller in electrical communication with at least the measurement device and pressurization device, and', 'a first communication device configured to transmit information between the module and an external site;, 'a mobile sulfur supply module comprising'} an inlet and outlet,', 'a hydrogen sulfide concentration detection device located between the inlet and outlet,', 'a hydrogen gas concentration detection device located between the inlet and the outlet,', 'and', 'a second communication device configured to transmit information between the hydrogen sulfide detection device and the external site and between the hydrogen gas detection device and the external site., 'a mobile detection module comprising'}2. The system of claim 1 , wherein the external site is a laptop computer.3. The system of claim 1 , wherein the external site is a website on the Internet.4. The system of claim 1 , wherein the pressurization device comprises a pump.5. The system of claim 4 , wherein the pump comprises an AC motor and a variable frequency drive.6. The system of claim 1 , wherein the pressurization device comprises a compressor.7. The system of claim 6 , wherein the compressor comprises an AC motor and a variable frequency drive.8. The system of claim 1 , wherein the sulfur product measurement device comprises a multi-parameter fluid measurement device.9. The system of claim 8 , wherein the fluid measurement device is configured to determine ...

Подробнее
Номер записи: 73
02-06-2022 дата публикации

Catalysts for the oxidative dehydrogenation of alkanes

Номер: US20220169584A1
Автор: David Sullivan, Elena SEBASTIAO, Marie Barnes, Vasily Simanzhenkov, XIAOLIANG Gao, Yoonhee KIM
Принадлежит: Nova Chemicals International SA

This document relates to oxidative dehydrogenation catalysts that include molybdenum, vanadium, and oxygen.

Подробнее
Номер записи: 74
21-04-2016 дата публикации

SOLID ACID CATALYST FOR PREPARING A MONOSACCHARIDE AND METHOD OF PREPARING A MONOSACCHARIDE FROM SEAWEED USING THE SAME

Номер: US20160108074A1
Автор: Hong Chae Hwan
Принадлежит:

A solid acid catalyst for preparing a monosaccharide by degrading agarose includes a particle having a carbonized chaff and a sulfonyl group which is chemically bound on a surface of the carbonized chaff. A method of preparing the monosaccharides from seaweed using the solid acid catalyst includes reacting agarose with the solid acid catalyst, thereby preparing the monosaccharide by using an economical and efficient process. 1. A solid acid catalyst for preparing a monosaccharide by degrading agarose , the solid acid catalyst comprising:a particle including a carbonized chaff and a sulfonyl group, which is chemically bound on a surface of the carbonized chaff.2. The solid acid catalyst of claim 1 , wherein the solid acid catalyst is a solid acid solution including a solid acid of 10 to 40 wt/volume % in water claim 1 , based on a total amount of the solid acid and water.3. The solid acid catalyst of claim 1 , wherein the solid acid catalyst has an average particle size of 100 to 500 nm.4. The solid acid catalyst of claim 1 , wherein the solid acid catalyst is prepared by carbonizing rice chaff at a temperature range of 550 to 700° C. claim 1 , immersing the carbonized chaff in an aqueous sodium hydroxide solution to form a sodium-silicate bond claim 1 , introducing the sulfonyl group to replace sodium by treatment with a sulfonic acid claim 1 , and treating with an acid solution.5. A method of preparing a monosaccharide from agarose claim 1 , the method comprising:obtaining the monosaccharide by degrading the agarose using a solid acid catalyst comprising a particle including a carbonized chaff and a sulfonyl group which is chemically bound on a surface of the carbonized chaff.6. The method of claim 5 , further comprising obtaining agar by treating seaweed with an alkaline aqueous solution and obtaining the agarose from the agar by using an solvent selected from the group consisting of organosulfur solvent and dimethylformamide claim 5 , before obtaining the ...

Подробнее
Номер записи: 75
19-04-2018 дата публикации

SHAPED CATALYST BODY FOR THE CATALYTIC OXIDATION OF SO2 INTO SO3

Номер: US20180104674A1
Автор: Borchert Holger, GRÜNE Philipp, Krämer Michael, LIPP Stefan, Schubert Markus, VAN DORLAND Jacob Cornelis, WALSDORFF Christian, Zühlke Jürgen
Принадлежит: BASF SE

The invention relates to shaped catalyst bodies for the oxidation of SOto SO, which comprise vanadium, at least one alkali metal and sulfate on a silicon dioxide support material, wherein the shaped body has the shape of a cylinder having 3 or 4 hollow-cylindrical convexities, obtainable by extrusion of a catalyst precursor composition comprising vanadium, at least one alkali metal and sulfate on a silicon dioxide support material through the opening of an extrusion tool, wherein the opening of the extrusion tool has a cross section formed by 3 or 4 partly overlapping rings whose midpoints lie essentially on a circular line having a diameter of y, wherein the rings are bounded by an outer line lying on a circle having an external diameter x1 and an inner line lying on a circle having an internal diameter x2. 111-. (canceled)12. A shaped catalyst body for the oxidation of SOto SO , which comprises vanadium , at least one alkali metal and sulfate on a silicon dioxide support material , wherein the shaped body has the shape of a cylinder having 4 hollow-cylindrical convexities , obtainable by extrusion of a catalyst precursor composition comprising vanadium , at least one alkali metal and sulfate on a silicon dioxide support material through the opening of an extrusion tool , wherein the opening of the extrusion tool has a cross section formed by 4 partly overlapping rings whose midpoints lie essentially on a circular line having a diameter of y , wherein the rings are bounded by an outer circle having an external diameter x1 and an inner circle having an internal diameter x2.13. The shaped catalyst body according to claim 12 , wherein the cross section is formed by 4 annular rings and the midpoints of the rings forming the cross section form a square.14. The shaped catalyst body according to claim 12 , wherein the ratio of the external diameter of the rings to the diameter of the circular line x1:y is from 0.8:1 to 2:1.15. The shaped catalyst body according to claim ...

Подробнее
Номер записи: 76
19-04-2018 дата публикации

Low pressure gas release hydrothermal and peroxide treatment of odh catalyst

Номер: US20180104675A1
Автор: David Jeffrey Sullivan, Vasily Simanzhenkov, XIAOLIANG Gao
Принадлежит: Nova Chemicals International SA

The preparation of an oxidative dehydrogenation catalyst comprising Mo, V, Nb and Te using a hydrothermal step. In some embodiments, the activity and reproducibility of the catalyst is improved by conducting the hydrothermal step while permitting gaseous products to leave the reactor. In some instances a condenser may be upstream of the outlet of the reactor.

Подробнее
Номер записи: 77
03-07-2014 дата публикации

OXIDATION CATALYSTS ON ALKALINE EARTH SUPPORTS

Номер: US20140187410A1
Автор: MOHAJERI NAHID
Принадлежит: UNIVERSITY OF CENTRAL FLORIDA RESEARCH FOUNDATION, INC.

An oxidation catalyst includes a support including particles of an alkaline earth salt, and first particles including a palladium compound on the support. The oxidation catalyst can also include precious metal group (PMG) metal particles in addition to the first particles intermixed together on the support. A gas permeable polymer that provides a continuous phase can completely encapsulate the particles and the support. The oxidation catalyst may be used as a gas sensor, where the first particles are chemochromic particles. 1. An oxidation catalyst , comprising:a support comprising particles of an alkaline earth salt, andfirst particles comprising at least a palladium compound on said support.2. The oxidation catalyst of claim 1 , wherein said alkaline earth salt comprises a sulfate claim 1 , a carbonate claim 1 , a hydroxide claim 1 , an oxide claim 1 , or a sulfide.3. The oxidation catalyst of claim 1 , wherein said alkaline earth salt comprises BaSO.4. The oxidation catalyst of claim 1 , wherein said palladium compound comprises palladium oxide claim 1 , palladium hydroxide claim 1 , or a palladium salt.5. The oxidation catalyst of claim 1 , wherein said first particles further comprise precious metal group (PMG) metal particles intermixed with particles of said palladium compound on said support.6. The oxidation catalyst of claim 5 , wherein said PMG metal particles comprise at least one of gold claim 5 , silver and a platinum group metal.7. The oxidation catalyst of claim 1 , further comprising an ultraviolet (UV) absorber or UV Blocker claim 1 , or a mixture thereof on said support.8. The oxidation catalyst of claim 7 , wherein said UV blocker comprises zinc oxide or titania.9. The oxidation catalyst of claim 7 , wherein said UV absorber comprises a triazine family compound.10. The oxidation catalyst of claim 1 , further comprising a gas permeable polymer that provides a continuous phase that completely encapsulates said first particles and said support.11. ...

Подробнее
Номер записи: 78
19-04-2018 дата публикации

PROCESS FOR MANAGING SULPHUR SPECIES

Номер: US20180105753A1
Автор: PORTER Terry, SIH Bryan
Принадлежит:

This disclosure relates to a method of managing a sulphur-containing species from a sour liquid, the method comprising: providing a sour liquid comprising sulphur-containing species; introducing a halogen-based catalyst to the sour liquid, the halogen-based catalyst being complexed with a second species; introducing an oxidant to the sour liquid; and reacting the sulphur-containing species, the halogen-based catalyst and the oxidant. The second species may be an ethoxylate or propoxylate species. The disclosure also relates to a composition comprising a sour liquid, a hydrogen-based catalyst complexed with a second species, and an oxidant, a use of a halogen-based catalyst that is complexed with a second species for the treatment of a sulphur-containing species in a sour liquid, and a composition containing a halogen-based catalyst that is complexed with a second species in a suitable carrier for use in the treatment of a sulphur-containing species in a sour liquid. 1. A method of removing a sulphur-containing species from a sour liquid , said method comprising:(a) providing a sour liquid comprising sulphur-containing species;(b) introducing a halogen-based catalyst to the sour liquid, the halogen-based catalyst being complexed with a second species;(c) introducing an oxidant to the sour liquid; and(d) reacting the sulphur-containing species, the halogen-based catalyst and the oxidant.2. The method of claim 1 , further comprising introducing a surfactant to the sour liquid to control the hydrophilic-lipophilic balance of the sour liquid.3. (canceled)4. The method of claim 1 , wherein the sulphur-containing species is a thiol species.5. The method of claim 4 , wherein the thiol species is hydrogen sulphide claim 4 , an alkyl-thiol claim 4 , an aryl-thiol claim 4 , a substituted-alkyl-thiol claim 4 , or a substituted-aryl-thiol.6. The method of claim 1 , wherein the second species is an ethoxylate species claim 1 , propoxylate species claim 1 , or a combination ...

Подробнее
Номер записи: 79
20-04-2017 дата публикации

CATALYST FOR A SULPHUR RECOVERY PROCESS WITH CONCURRENT HYDROGEN PRODUCTION, METHOD OF MAKING THEREOF AND THE SULPHUR RECOVERY PROCESS WITH CONCURRENT HYDROGEN PRODUCTION USING THE CATALYST

Номер: US20170106355A1
Автор: Angelini Fabio, Barbato Lucia, Colozzi Michele, PALMA Vincenzo, PALO Emma, Vaiano Vincenzo
Принадлежит: STAMICARBON B.V. ACTING UNDER THE NAME OF MT INNOVATION CENTER

Disclosed is a catalyst suitable for the catalytic oxidative cracking of a HS-containing gas stream, particularly in the event that the stream also contains methane and/or ammonia. The catalyst comprises iron and molybdenum supported by a carrier comprising aluminium. The carrier preferably is alumina. The iron and molybdenum preferably are in the form of sulphides. Also disclosed is a method for the production of hydrogen from a HS-containing gas stream, comprising subjecting the gas stream to catalytic oxidative cracking so as to form Hand S, using a catalyst in accordance with any one of the preceding claims. 1. A catalyst suitable for the catalytic oxidative cracking of a HS-containing gas stream , the catalyst comprising iron and molybdenum supported by a carrier comprising aluminium.2. A catalyst according to claim 1 , wherein the iron is in the form of iron sulphide.3. A catalyst according to or claim 1 , wherein the molybdenum is in the form of molybdenum sulphide.4. A catalyst according to any one of the preceding claims claim 1 , wherein the carrier is made up of AlO.5. A catalyst according to any one of the preceding claims claim 1 , wherein the iron is present in the catalyst in a range of from 1 to 50% by weight claim 1 , preferably 2% by weight of the catalyst.6. A catalyst according to any one of the preceding claims claim 1 , wherein the molybdenum is present in the catalyst in a range of from 1 to 50% by weight claim 1 , preferably 6% by weight of the catalyst.7. A method for the production of hydrogen from a HS-containing gas stream claim 1 , comprising subjecting the gas stream to catalytic oxidative cracking so as to form Hand S claim 1 , using a catalyst in accordance with any one of the preceding claims.8. A method according to claim 7 , wherein the catalytic oxidative cracking is conducted with a molar ratio HS/Oin the feedstock higher than 2:1 claim 7 , preferably in the range of 2:1-6:1.9. A method according to claim 8 , wherein the ratio is ...

Подробнее
Номер записи: 80
02-04-2020 дата публикации

METHODS OF DEGRADING ORGANIC POLLUTANTS AND PREVENTING OR TREATING MICROBE USING Bi2S3-CdS PARTICLES

Номер: US20200102228A1
Автор: NAWAZ Muhammad, QURESHI Faiza
Принадлежит: Imam Abdulrahman Bin Faisal University

Methods of synthesizing BiS—CdS particles in the form of spheres as well as properties of these BiS—CdS particles are described. Methods of photocatalytic degradation of organic pollutants employing these BiS—CdS particles and methods of preventing or reducing microbial growth on a surface by applying these BiS—CdS particles in the form of a solution or an antimicrobial product onto the surface are also specified. 1. A method for degrading an organic pollutant , the method comprising:{'sub': 2', '3, 'contacting BiS—CdS particles with an aqueous solution comprising the organic pollutant to form a mixture;'}illuminating the mixture with a light at a wavelength in a range of 200-700 nm for 0.1-6 hours thereby degrading the organic pollutant; [{'sub': 2', '3, 'the BiS—CdS particles comprise bismuth(III) sulfide and cadmium(II) sulfide;'}, {'sub': 2', '3, 'the BiS—CdS particles are in the form of spheres; and'}, 'the organic pollutant is present in the aqueous solution at a concentration of 1-1,000 mg/L relative to a total volume of the aqueous solution., 'wherein2. The method of claim 1 , wherein an atomic ratio of bismuth to cadmium in the BiS—CdS particles is in a range of 0.5:1 to 4:1 claim 1 , and an atomic ratio of sulfur to bismuth in the BiS—CdS particles is in a range of 3:2 to 8:1.3. The method of claim 1 , wherein the BiS—CdS particles are in the form of spheres with an average diameter of 0.3-5 μm.4. The method of claim 1 , wherein the BiS—CdS particles have a BET surface area of 5-25 m/g claim 1 , a pore size of 10-50 nm claim 1 , and a pore volume of 0.02-0.2 cm/g.5. The method of claim 1 , wherein an amount of the BiS—CdS particles in the mixture is in a range of 0.1-10 g/L relative to a total volume of the mixture.6. The method of claim 1 , wherein at least 30% by mole of the organic pollutant is degraded within 2 hours of illuminating.7. The method of claim 1 , wherein the organic pollutant comprises methyl orange claim 1 , methyl green claim 1 , or both ...

Подробнее
Номер записи: 81
30-04-2015 дата публикации

Plasma-assisted nanofabrication of two-dimensional metal chalcogenide layers

Номер: US20150118487A1
Автор: Colin A. Wolden, Rachel M. Morrish
Принадлежит: COLORADO SCHOOL OF MINES

The invention describes two methods for manufacturing metal dichalcogenide materials. The invention also includes a coated dichalcogenide substrate.

Подробнее
Номер записи: 82
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.

Подробнее
Номер записи: 83
10-07-2014 дата публикации

SILICA-SUPPORTED CATALYST

Номер: US20140194642A1
Автор: Endo Satoshi, Kato Takaaki
Принадлежит: ASAHI KASEI CHEMICALS CORPORATION

A silica-supported catalyst used when producing a corresponding unsaturated nitrile in a vapor-phase catalytic ammoxidation reaction of propane or isobutane, the catalyst including a metal oxide represented by the following formula (1), 1. A silica-supported catalyst used when producing a corresponding unsaturated nitrile in a vapor-phase catalytic ammoxidation reaction of propane or isobutane , the catalyst comprising a metal oxide represented by the following formula (I) ,{'br': None, 'sub': a', 'b', 'c', 'd', 'e', 'n, 'MoVNbXTZO\u2003\u2003(1)'}(wherein X represents at least one or more elements selected from Sb and Te; T represents at least one or more elements selected from Ti, W, Mn, and Bi; Z represents at least one or more elements selected from La, Ce, Yb, and Y; and a, b, c, d, and e are in a range of 0.05≦a≦0.5, 0.01≦b≦0.5, 0.001≦c≦0.5, 0≦d≦1, and 0≦e≦1, respectively, and n represents a value that satisfies an atomic valence){'sup': 3', '2, 'wherein the silica-supported catalyst has an average pore size of 60 to 120 nm, a total pore volume of 0.15 cm/g or more, a specific surface area of 5 to 25 m/g, and a crystallite size of 40 to 250 nm as determined from half width of a (001) peak by X-ray diffraction.'}2. The silica-supported catalyst according to claim 1 , wherein a pore volume of pores having a pore size of less than 60 nm based on total pore volume is less than 30% claim 1 , and a pore volume of pores having a pore size exceeding 120 nm based on total pore volume is less than 30%.3. The silica-supported catalyst according to or claim 1 , wherein a support amount of the silica is 20 to 70% by mass based on total mass of the catalyst composed of the metal oxide and the silica.4. A method for producing a silica-supported catalyst claim 1 , comprising the steps of:(I) preparing a raw material-prepared solution containing Mo, V, Nb, X, T, and Z, wherein an atomic ratio a of V to one Mo atom is 0.05≦a≦0.5, an atomic ratio b of Nb to one Mo atom is 0.01≦b ...

Подробнее
Номер записи: 84
30-04-2015 дата публикации

CATALYST FOR ALKANE OXIDATIVE DEHYDROGENATION AND/OR ALKENE OXIDATION

Номер: US20150119622A1
Автор: BERG-SLOT Johanna Jacoba, DE ROOIJ Friso, SCHOONEBEEK Ronald Jan, VERHAAK Michael Johannes Franciscus Maria
Принадлежит:

The invention relates to a process for treating a catalyst for alkane oxidative dehydrogenation and/or alkene oxidation, which catalyst is a mixed metal oxide catalyst containing molybdenum, vanadium and niobium, wherein the process comprises: contacting the catalyst with a gas mixture comprising an inert gas and oxygen (02), wherein the amount of oxygen is of from 10 to less than 10,000 parts per million by volume (ppmv), based on the total volume of the gas mixture, at an elevated temperature. 1. A process for treating a catalyst for alkane oxidative dehydrogenation and/or alkene oxidation , which catalyst is a mixed metal oxide catalyst containing molybdenum , vanadium and niobium , wherein the process comprises:contacting the catalyst with a gas mixture comprising an inert gas and oxygen (O2), wherein the amount of oxygen is of from 10 to less than 10,000 parts per million by volume (ppmv), based on the total volume of the gas mixture, at an elevated temperature.2. A process according to claim 1 , wherein the temperature is of from 300 to 900° C.3. A process according to claim 1 , wherein the amount of oxygen is of from 100 to 9 claim 1 ,500 parts per million by volume.4. A process according to claim 1 , wherein the catalyst additionally contains tellurium.5. A process for preparing a catalyst for alkane oxidative dehydrogenation and/or alkene oxidation claim 1 , which catalyst is a mixed metal oxide catalyst containing molybdenum claim 1 , vanadium and niobium claim 1 , wherein the process comprises:a) preparing a catalyst containing molybdenum, vanadium and niobium;b) contacting the catalyst with oxygen (O2) at an elevated temperature, to obtain a mixed metal oxide catalyst containing molybdenum, vanadium and niobium; andc) contacting the catalyst with a gas mixture comprising an inert gas and oxygen (O2), wherein the amount of oxygen is of from 10 to less than 10,000 parts per million by volume (ppmv), based on the total volume of the gas mixture, at an ...

Подробнее
Номер записи: 85
27-04-2017 дата публикации

ORGANIC ACIDS FROM HOMOCITRATE AND HOMOCITRATE DERIVATIVES

Номер: US20170113993A1
Автор: BAKER Ralph Thomas, BARANOVA Olena, HASS Cathy Staloch, Lau Man Kit, Manzer Leo E., NTAIS Spyridon, THAPA Indira, White James F.
Принадлежит:

This disclosure relates to methods for converting homocitric acid to adipic acid, and more particularly to methods of using metal catalysts to catalyze the conversion of homocitric acid to adipic acid. 1. A method for making adipic acid , or a salt or ester thereof , the method comprising contacting homocitric acid , or a salt , ester , or lactone thereof , with a metal catalyst.6. A method for making 2-ethylsuccinic acid , or a salt or ester thereof , the method comprising contacting homocitric acid , or a salt , ester , or lactone thereof , with a metal catalyst.11. A method for making 2-methylpentanedioic acid , or a salt or ester thereof , the method comprising contacting homocitric acid , or a salt , ester , or lactone thereof , with a metal catalyst.16. A method for making a composition comprising two or more compounds selected from the group consisting of: adipic acid , 1 ,2 ,4-butanetricarboxylic acid , 2-ethylsuccinic acid , and 2-methylpentanedioic acid , or a salt or ester thereof , the method comprising contacting homocitric acid , or a salt , ester , or lactone thereof , with a metal catalyst.21. The method of any one of - , wherein the metal catalyst is a heterogeneous catalyst.22. The method of any one of - , wherein the metal catalyst comprises a metal selected from the group consisting of Ni , Pd , Pt , Re , Ag , Au , Cu , Zn , Rh , Ru , Bi , Fe , Co , Os , Ir , V , and mixtures of two or more thereof.23. The method of any one of - , wherein the metal catalyst comprises a metal selected from the group consisting of Pd and Pt.24. The method of claim 23 , wherein the metal catalyst comprises Pd.25. The method of any one of - claim 23 , wherein the metal catalyst is a bimetallic catalyst.26. The method of claim 25 , wherein the metal catalyst comprises Pd and Cu.27. The method of any one of - claim 25 , wherein the metal catalyst is a nanocatalyst.28. The method of any one of - claim 25 , wherein the metal catalyst is a supported catalyst.29. The ...

Подробнее
Номер записи: 86
27-05-2021 дата публикации

SULFURIC ACID ALKYLATION REACTOR SYSTEM AND CONVERSION OF A HYDROGEN FLUORIDE ALKYLATION UNIT TO A SULFURIC ACID ALKYLATION UNIT

Номер: US20210154640A1
Автор: Etchells Arthur William, Jensen Cody, Kranz Ken, Nunez Jason Brent, Presley Christopher Shane, Rana Diwakar
Принадлежит: DuPont Industrial Biosciences USA, LLC

This disclosure relates to SA alkylation reactor systems. The reactor system involves a closed reactor vessel comprising a shell, a vapor outlet, and an emulsion outlet. The reactor system also involves a distributor located at the lower portion of the reactor vessel, a mixer fluidly connected with the distributor, and an emulsion pump fluidly connected with the mixer and the emulsion outlet, wherein the emulsion pump is located outside the reactor vessel. This disclosure also relates to a split SA alkylation reactor system wherein a single horizontal reactor vessel is divided to accommodate two reactor systems. This disclosure also relates to alkylation processes using the reactor systems. This disclosure also relates to methods of converting an HF alkylation unit to a SA alkylation unit. This disclosure also relates to converted SA alkylation units and alkylation processes performed in the converted SA alkylation units. 1. A sulfuric acid alkylation reactor system comprising:(a) a closed reactor vessel comprising a shell, a vapor outlet, and an emulsion outlet;(b) a distributor located at the lower portion of the reactor vessel;(c) a mixer fluidly connected with the distributor; and(d) an emulsion pump fluidly connected with the mixer and the emulsion outlet;wherein the emulsion pump is located outside the reactor vessel.2. The sulfuric acid alkylation reactor system of claim 1 , wherein the mixer is an internal static mixer located at the lower portion of the reactor vessel claim 1 , the distributor is downstream of the internal static mixer and is directly connected with the internal static mixer.3. The sulfuric acid alkylation reactor system of further comprising an external static mixer fluidly connected with the internal static mixer and the emulsion pump claim 2 , wherein the external static mixer is located outside the reactor vessel.4. The sulfuric acid alkylation reactor system of claim 1 , wherein the mixer is an in-line rotor stator mixer fluidly ...

Подробнее
Номер записи: 87
27-05-2021 дата публикации

AGGLOMERATED ODH CATALYST

Номер: US20210154645A1
Автор: Anseeuw Renee Laurel, Barnes Marie Annette, Gao Xiaoliang, Kim Yoonhee, Simanzhenkov Vasily, Styles Yipei, Sullivan David
Принадлежит:

Oxidative dehydrogenation catalysts for converting lower paraffins to alkenes such as ethane to ethylene when prepared as an agglomeration, for example extruded with supports comprising slurries of NbO. 127-. (canceled)28. An agglomerated catalyst , wherein the agglomerated catalyst is prepared from at least: [{'br': None, 'sub': 1.0', '0.12-0.49', '0.6-0.16', '0.15-0.20', 'd, 'MoVTeNbO'}, 'wherein d is a number to satisfy the valence of the oxide; and, '10 wt. % to 95 wt. % of a catalyst active phase of the formula{'sub': 2', '5, '5 wt. % to 90 wt. % of NbOhydrate.'}29. The agglomerated catalyst according to claim 28 , further comprising up to 80 wt. % of a non-antagonistic binder.30. The agglomerated catalyst according to claim 29 , wherein the non-antagonistic binder is chosen from oxides of aluminum claim 29 , titanium claim 29 , and zirconium.31. The agglomerated catalyst according to claim 30 , wherein the non-antagonistic binder is present in the amount of 35 wt. % to 65 wt. % based on the weight of the agglomerated catalyst and the agglomerated catalyst has a surface area up to 250 m/g.32. The agglomerated catalyst according to 30 claim 30 , wherein the oxide of aluminum is Boehmite (Al(O)OH).33. The agglomerated catalyst according to claim 30 , wherein the non-antagonistic binder is an oxide of titanium.34. The agglomerated catalyst according to claim 30 , wherein the non-antagonistic binder is an oxide of zirconium.35. The agglomerated catalyst according to claim 28 , having a cumulative surface area less than 10 m/g as measured by BET and comprising less than 35 wt % of a non-antagonistic binder.36. The agglomerated catalyst according to claim 35 , having a cumulative pore volume from 0.020 to 0.20 cm/g.37. The agglomerated catalyst according to claim 35 , having a pore size distribution less than 40% and having a pore width size less than 200 Angstroms.38. The agglomerated catalyst according to claim 35 , having a percent pore area distribution less than ...

Подробнее
Номер записи: 88
31-07-2014 дата публикации

Photocatalyst for the Reduction of Carbon Dioxide

Номер: US20140213427A1
Автор: LANDRY Daniel
Принадлежит: SUNPOWER TECHNOLOGIES LLC

The present disclosure relates to a method and composition for forming photocatalytic capped colloidal nanocrystals which may include semiconductor nanocrystals and inorganic capping agents as photocatalysts. Photocatalytic capped colloidal nanocrystals may be deposited on a substrate and treated to form a photoactive material which may be employed in a plurality of photocatalytic energy conversion applications such as the photocatalytic reduction of carbon dioxide. Different semiconductor materials, shapes and sizes may be combined when forming photocatalytic capped colloidal nanocrystals, allowing band gaps to be tuned and expand the range of wavelengths of sunlight usable by the photoactive material. The disclosed photocatalytic capped colloidal nanocrystals, within the photoactive material, may also exhibit a higher efficiency of solar energy conversion process, derived from a higher surface area of the semiconductor nanocrystals within photocatalytic capped colloidal nanocrystals available for the absorption of sunlight and enhancement of charge carrier dynamics. 1. A photocatalytic material comprising:a colloidal semiconductor nanocrystal; anda photocatalytic capping agent that binds to a surface of the semicondutor nanocrystal, wherein the photocatalytic capping agent is an inorganic capping agent.2. The photocatalytic material of claim 1 , wherein the photocatalytic material is submerged in hydrogen for a carbon dioxide reduction process.3. The photocatalytic material of claim 1 , wherein the semiconductor nanocrystal comprises one or more of Ag claim 1 , Au claim 1 , Ru claim 1 , Rh claim 1 , Pt claim 1 , Pd claim 1 , Os claim 1 , Ir claim 1 , Ni claim 1 , Cu claim 1 , CdS claim 1 , Pt-tipped claim 1 , TiO claim 1 , Mn/ZnO claim 1 , ZnO claim 1 , CdSe claim 1 , SiO claim 1 , ZrO claim 1 , SnO claim 1 , WO claim 1 , MoO claim 1 , CeO claim 1 , ZnS claim 1 , WS claim 1 , MoS claim 1 , SiC claim 1 , GaP claim 1 , and Cu—Au.4. The photocatalytic material of ...

Подробнее
Номер записи: 89
21-05-2015 дата публикации

PROCESS FOR SYNTHESIS OF MOLYBDENUM SULFIDE-BASED CATALYSTS

Номер: US20150139890A1
Автор: Collins Raymond M., Gulotty, JR. Albert E., JR. Robert J., Millar Dean, Schweizer
Принадлежит: Dow Global Technologies LLC

A process for preparing a molybdenum sulfide-based catalyst comprises drying a precipitated molybdenum sulfide-based catalyst precursor, for example, a wet filter cake, such that a particulate catalyst precursor, containing from 12 to 15 percent by weight water, is formed. The particulate catalyst precursor is desirably in the form of free-flowing particles. The particulate catalyst precursor is then auto-reduced. A rotary furnace that subjects the catalyst precursor to at least two zones having distinct temperatures may be conveniently used for drying, auto-reduction, or both. The staged drying and auto-reduction steps reduce the tendency of the precursor to self-heat, which is undesirable because it reduces both the activity and selectivity of the final catalyst. 1. A process for preparing a catalyst , comprisingdrying a precipitated catalyst precursor containing at least molybdenum and sulfur such that it contains from 12 to 15 weight percent water;simultaneously with or subsequently to drying, accomplishing passivation of the precipitated catalyst precursor by exposing it to air, an inert atmosphere, or a combination thereof under conditions suitable to form a passivated particulate catalyst precursor,passivation being defined to mean that the particulate catalyst precursor does not self-heat to more than 100° C. if exposed to air; and thenthermally auto-reducing the passivated particulate catalyst precursor at a temperature ranging from 350° C. to 550° C. to form a catalyst.2. The process of wherein the precipitated catalyst precursor is prepared from a reaction product of cobalt acetate claim 1 , ammonium heptamolybdate and ammonium sulfide; or of ammonium tetrathiomolybdate and cobalt acetate; or of ammonium heptamolybdate and ammonium sulfide.3. The process of wherein the drying is carried out by either pressure filtration followed by vacuum drying claim 1 , or by preparing a suspension of the precipitated catalyst precursor and then spray-drying the ...

Подробнее
Номер записи: 90
18-05-2017 дата публикации

TREATMENT OF A MIXED METAL OXIDE CATALYST CONTAINING MOLYBDENUM, VANADIUM, NIOBIUM AND OPTIONALLY TELLURIUM

Номер: US20170136447A1
Автор: SCHOONEBEEK Ronald Jan, Verhaak Michiel Johannes Franciscus Maria
Принадлежит:

The invention relates to a process for treatment of a mixed metal oxide catalyst containing molybdenum, vanadium, niobium and optionally tellurium, comprising contacting a gas stream comprising methane, an inert gas or oxygen or any combination of two or more of these with the catalyst, wherein said gas stream comprises 0 to 25 vol. % of an alkane containing 2 to 6 carbon atoms and/or alkene containing 2 to 6 carbon atoms. 1. A process for treatment of a mixed metal oxide catalyst containing molybdenum , vanadium , niobium and optionally tellurium , comprising contacting a gas stream comprising methane , an inert gas or oxygen or any combination of two or more of these with the catalyst , wherein said gas stream comprises 0 to 25 vol. % of an 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 is of from 200 to 500° C.3. The process according to claim 2 , wherein the temperature is of from 250 to 500° C.4. The process according to claim 1 , wherein the pressure is of from 0.1 to 15 bara. preferably of from 1 to 5 bara.5. The process according to claim 1 , wherein the catalyst is a fresh catalyst.6. The process according to claim 5 , wherein the fresh catalyst is intended to be used as a catalyst in 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.7. The process according to claim 1 , wherein the catalyst is a used catalyst.8. The process according to claim 7 , wherein the used catalyst has been used as a catalyst in 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. The present invention relates to a process for treatment of a mixed metal oxide catalyst containing molybdenum (Mo), vanadium (V), niobium (Nb) and optionally tellurium (Te).Mixed metal oxide catalysts containing molybdenum, vanadium, ...

Подробнее
Номер записи: 91
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 ...

Подробнее
Номер записи: 92
18-05-2017 дата публикации

ALKANE OXIDATIVE DEHYDROGENATION AND/OR ALKENE OXIDATION

Номер: US20170137348A1
Автор: SCHOONEBEEK Ronald Jan, Verhaak Michiel Johannes Franciscus Maria
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 methane, an inert gas or oxygen or any combination of two or more of these, wherein the first gas stream comprises 0 to 2 vol. % of the alkane containing 2 to 6 carbon atoms and/or 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 oxygen and the alkane containing 2 to 6 carbon atoms and/or the alkene containing 2 to 6 carbon atoms with the catalyst. 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 methane, an inert gas or oxygen or any combination of two or more of these, wherein the first 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, with a mixed metal oxide catalyst containing molybdenum, vanadium, niobium and optionally tellurium; followed bycontacting a second gas stream comprising oxygen and the alkane containing 2 to 6 carbon atoms and/or the alkene containing 2 to 6 carbon atoms with the catalyst.2. The process according to claim 1 , wherein the temperature during the entire process is of from 200 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 catalyst that is contacted with the first gas stream is a fresh catalyst or a used catalyst.6. The process according to claim 1 , wherein the process is a process of the oxidative dehydrogenation of an alkane ...

Подробнее
Номер записи: 93
18-05-2017 дата публикации

CONVERSION OF ALCOHOLS TO CARBOXYLIC ACIDS USING HETEROGENEOUS PALLADIUM-BASED CATALYSTS

Номер: US20170137362A1
Автор: Ahmed Maaz S., Mannel David S., Powell Adam B., Root Thatcher W., Stahl Shannon S.
Принадлежит:

Disclosed are methods for synthesizing an ester or a carboxylic acid from an organic alcohol. To form the ester one reacts, in the presence of oxygen gas, the alcohol with methanol or ethanol. This reaction occurs in the presence of a catalyst comprising palladium and a co-catalyst comprising bismuth, tellurium, lead, cerium, titanium, zinc and/or niobium (most preferably at least bismuth and tellurium). Alternatively that catalyst can be used to generate an acid from that alcohol, when water is also added to the reaction mix. 1. A method for synthesizing an acid from an alcohol , comprising:{'sub': '2', 'exposing a compound of the formula R—CH—OH to oxygen gas and methanol-water mixture so as to yield a compound of the formula RCOOH;'}wherein said exposing is in the presence of a catalyst comprising palladium, bismuth and tellurium;wherein R is an alkyl, cyclic, aryl, heterocyclic, arene, amine, ether, or ester, with or without sulfur or halogen content.2. The method of claim 1 , wherein the catalyst further comprises an elemental carbon support in the form of charcoal or activated carbon.3. The method of claim 1 , wherein there is at least 0.1 mol percent palladium claim 1 , at least 0.01 mol percent bismuth claim 1 , and at least 0.01 mol percent tellurium in the catalyst.4. The method of claim 1 , in which the bismuth is present in a salt form and the tellurium is present in a metal form.5. The method of claim 4 , wherein the bismuth salt is Bi(NO).5HO.6. A method for synthesizing an acid from an alcohol claim 4 , comprising:{'sub': '2', 'exposing a compound of the formula R—CH—OH to oxygen gas and water so as to yield a compound of the formula RCOOH;'}wherein said exposing is in the presence of a catalyst comprising palladium and a co-catalyst comprising at least two of the following: bismuth, tellurium, lead, cerium, titanium, zinc and niobium;wherein R is an alkyl, cyclic, aryl, heterocyclic, arene, amine, ether, or ester, with or without sulfur or halogen ...

Подробнее
Номер записи: 94
09-05-2019 дата публикации

CONTROLLING CARBON DIOXIDE OUTPUT FROM AN ODH PROCESS

Номер: US20190135715A1
Автор: Goodarznia Shahin, Simanzhenkov Vasily
Принадлежит: NOVA CHEMICALS (INTERNATIONAL) S.A.

In some embodiments provided herein are processes for controlling carbon dioxide output levels coming from an oxidative dehydrogenation (ODH) process. Carbon dioxide output from an ODH process includes that produced in the ODH reaction and carry over when carbon dioxide is used as an inert diluent. Under certain circumstances carbon dioxide can also be consumed in the ODH process by acting as an oxidizing agent. By varying the amount of steam introduced into the ODH process an operator may alter the degree to which carbon dioxide acts as an oxidizing agent. This in turn allows a level of control in the degree to which carbon dioxide is consumed in the process, effecting overall carbon dioxide output. Minimizing the carbon dioxide output provides an opportunity to limit or eliminate the requirement for release of carbon dioxide into the atmosphere. 1. A method for controlling the carbon dioxide output from an oxidative dehydrogenation process comprising the steps of:i) introducing a gas mixture comprising a lower alkane and oxygen, and optionally one or more of steam and inert diluent, into at least one ODH reactor containing the same or different ODH catalysts, provided that if more than one ODH reactor is present then at least one of the ODH catalysts is capable of utilizing carbon dioxide as an oxidizing agent, under conditions to produce a product stream from at least one ODH reactor comprising corresponding alkene, and optionally one or more of unreacted lower alkane, unreacted oxygen, carbon dioxide, carbon monoxide, inert diluent, and acetic acid;ii) measuring carbon dioxide levels in one or more said product streams; and a. introducing steam, or increasing amount of steam introduced, into the at least one ODH reactor in an amount sufficient to decrease the carbon dioxide output levels when the measured carbon dioxide level is above a predetermined target carbon dioxide level;', 'b. decreasing the flow rate of steam introduced into the at least one ODH reactor ...

Подробнее
Номер записи: 95
28-05-2015 дата публикации

METHOD FOR PRODUCING NOx REMOVAL CATALYST FOR HIGH-TEMPERATURE EXHAUST GAS

Номер: US20150148217A1
Автор: Fujii Shuji, Iwamoto Kazuhiro, NOCHI Katsumi, Yonemura Masanao
Принадлежит:

Provided is a method for producing a NOx removal catalyst for high-temperature exhaust gas, comprising: calcining a mixture comprising ZrOand TiOwith a ZrOcontent ratio of 15% by weight to 55% by weight at 500±15° C. to obtain a composite oxide support and supporting tungsten oxide on the composite oxide, support, followed by calcination at 650±15° C. to obtain a powder catalyst. 12-. (canceled)3. A method for producing a NOx removal catalyst for high-temperature exhaust gas , comprising:{'sub': 2', '2', '2, 'b': '15', 'calcining a mixture comprising ZrOand TiOwith a ZrOcontent ratio of % by weight to 55% by weight at 500±15° C. to obtain a composite oxide support;'}treating the composite oxide support by immersion in sulfuric acid;supporting tungsten oxide on the composite oxide support, followed by calcination at 650±15° C. to obtain a powder catalyst;wherein the immersion of the composite oxide support in sulfuric acid produces sulfate ions which are allowed to remain on the composite oxide support, and subsequentlythe tungsten oxide is supported on the support on which the sulfate ions remain, followed by the calcination. The present invention relates to a method for producing a NOx removal catalyst for high-temperature exhaust gas.The present invention relates to a method for producing a NOx removal catalyst for high-temperature exhaust gas and more specifically, relates to a method for producing a NOx removal catalyst for high-temperature exhaust gas suitable for reductive removal of nitrogen oxides contained in high-temperature gas emitted from fossil-fuel power plants, gas turbines, and the like.High temperature combustion exhaust gas emitted from fossil-fuel power plants and gas turbines contains nitrogen oxides. The nitrogen oxides in the exhaust gas have to be removed before the emission of the exhaust gas. In this respect, the nitrogen oxides (NO and NO) are reductively reacted with a reducing agent to perform a decomposition treatment into harmless ...

Подробнее
Номер записи: 96
28-05-2015 дата публикации

Catalyst Material for the Oxidation of Hydrocarbons

Номер: US20150148563A1
Автор: HAGEMEYER Alfred, Margitfalvi Jozsef, MESTL Gerhard, NEUMANN Silvia, Tompos Andras, Vegvari Lajos Istvan
Принадлежит: Clariant Produkte (Deutschland) GmbH

A catalyst material for the oxidation and/or oxidative dehydrogenation of hydrocarbons, in particular for the selective oxidation of propane to acrylic acid, is specified, comprising a) molybdenum (Mo), b) vanadium (V), c) niobium (Nb), d) tellurium (Te), e) nickel (Ni), f) tungsten (W) and g) manganese (Mn), in which the molar ratio of at least one element, which is selected from nickel, tungsten and manganese, to molybdenum lies in the range 0.01 to 0.2, more preferably 0.05 to 0.15 and particularly preferably from 0.0025:1 to 0.3:1. Furthermore, a catalyst for the oxidation and/or oxidative dehydrogenation of hydrocarbons, a use of the catalyst material or of the catalyst, a method for producing a catalyst material for the oxidation and/or oxidative dehydrogenation of hydrocarbons and a method for the selective oxidation of propane to acrylic acid is specified. 2. Catalyst material according to claim 1 , in which the molar ratio of at least one element claim 1 , which is selected from vanadium claim 1 , niobium and tellurium claim 1 , to molybdenum lies in the range of from 0.15:1 to 0.3:1 or 0.17:1 to 0.27:1; and/or with an X-ray diffractogram which has diffraction reflexes h claim 1 , i claim 1 , k and l the peaks of which lie at the diffraction angles (2θ) 26.2±0.5 (h) claim 1 , 27.0±0.5 (i) claim 1 , 7.8±0.5 (k) and 28.0±0.5 (l); and/or{'sub': h', 'i', 'k', 'l', 'x (x=1 to 3), 'claim-text': [{'br': None, 'i': R', '=P', 'P', '+P, 'sub': 1', 'h', 'h', 'i, '/()>0.3, preferably >0.35 and particularly preferably >0.4; and/or'}, {'br': None, 'i': R', '=P', 'P', '+P, 'sub': 2', 'i', 'i', 'l, '/()>0.5, preferably >0.6 and particularly preferably >0.63; and/or'}, {'br': None, 'i': R', '=P', 'P', '+P, 'sub': 3', 'i', 'i', 'k, '/()<0.8, preferably <0.75, particularly preferably <0.7; and/or'}], 'in which the intensities P, P, P, Pof the diffraction reflexes h, i, k and l of the X-ray diffractogram satisfy the following equations, with Ras the intensity ratio defined by ...

Подробнее
Номер записи: 97
26-05-2016 дата публикации

High surface area graphene-supported metal chalcogenide assembly

Номер: US20160145504A1
Автор: Christine A. Orme, Joshua D. Kuntz, Marcus A. Worsley
Принадлежит: Lawrence Livermore National Security LLC

Disclosed here is a method for hydrocarbon conversion, comprising contacting at least one graphene-supported assembly with at least one hydrocarbon feedstock, wherein the graphene-supported assembly comprises (i) a three-dimensional network of graphene sheets crosslinked by covalent carbon bonds and (ii) at least one metal chalcogenide compound disposed on the graphene sheets, wherein the chalcogen of the metal chalcogenide compound is selected from S, Se and Te, and wherein the metal chalcogenide compound accounts for at least 20 wt. % of the graphene-supported assembly.

Подробнее
Номер записи: 98
04-06-2015 дата публикации

FACILITATED CO2 TRANSPORT MEMBRANE AND METHOD FOR PRODUCING SAME, AND METHOD AND APPARATUS FOR SEPARATING CO2

Номер: US20150151243A1
Автор: Hanai Nobuaki, ISHII Sayaka, Kiyohara Yasato, MIYATA Junya, NAGANO Megumi, Okada Osamu, Yan Peng
Принадлежит: RENAISSANCE ENERGY RESEARCH CORPORATION

Provided is a facilitated COtransport membrane having an improved COpermeance and an improved CO/Hselectivity. The facilitated COtransport membrane includes a separation-functional membrane that includes a hydrophilic polymer gel membrane containing a COcarrier and a COhydration catalyst. Further preferably, the COhydration catalyst at least has catalytic activity at a temperature of 100° C. or higher, has a melting point of 200° C. or higher, or is soluble in water. 1. A facilitated COtransport membrane comprising a separation-functional membrane that includes a hydrophilic polymer gel membrane containing a COcarrier and a COhydration catalyst.2. The facilitated COtransport membrane according to claim 1 , wherein the COhydration catalyst has catalytic activity at a temperature of 100° C. or higher.3. The facilitated COtransport membrane according to claim 1 , wherein the COhydration catalyst has a melting point of 200° C. or higher.4. The facilitated COtransport membrane according to claim 1 , wherein the COhydration catalyst is soluble in water.5. The facilitated COtransport membrane according to claim 1 , wherein the COhydration catalyst contains an oxo acid compound.6. The facilitated COtransport membrane according to claim 5 , wherein the COhydration catalyst is an oxo acid compound of at least one element selected from group 6 elements claim 5 , group 14 elements claim 5 , group 15 elements and group 16 elements.7. The facilitated COtransport membrane according to claim 1 , wherein the COhydration catalyst contains at least one of a tellurous acid compound claim 1 , a selenious acid compound claim 1 , an arsenious acid compound and an orthosilicic acid compound.8. The facilitated COtransport membrane according to claim 1 , wherein the COhydration catalyst contains a molybdic acid compound.9. The facilitated COtransport membrane according to claim 1 , wherein the gel membrane is a hydrogel.10. The facilitated COtransport membrane according to claim 1 , wherein ...

Подробнее
Номер записи: 99
25-05-2017 дата публикации

A CATALYST FOR DIRECT SYNTHESIS OF HYDROGEN PEROXIDE, ITS PREPARATION AND USE

Номер: US20170144886A1
Автор: DESMEDT Frédérique, MIQUEL Pierre, VLASSELAER Yves
Принадлежит:

A catalyst comprising a platinum group metal (group 10) supported on a carrier, said carrier comprising a silica core and a precipitate layer of comprising a metal oxide, sulfate or phosphate on said core; said catalyst also comprising a rhodium group metal (group 9) supported on said carrier. 1. A catalyst comprising an amount of Pd supported on a carrier , said carrier comprising a silica core and a precipitate layer comprising a metal oxide , sulfate or phosphate on said core; said catalyst further comprising Rh supported on said carrier in an amount of from 1% to 50% of the amount of Pd.2. The catalyst according to claim 1 , wherein the metal oxide is selected from the group consisting of Zr oxides claim 1 , Nb oxides claim 1 , Ta oxides claim 1 , Nb phosphate claim 1 , and BaSO4.3. The catalyst according to claim 1 , wherein the metal oxide comprises ZrOor BaSO.4. The catalyst according to claim 3 , wherein the metal oxide comprises BaSO.5. The catalyst according to claim 1 , wherein the amount of Pd supported on the carrier is from 0.001 to 10 wt. %.6. The catalyst according to claim 1 , wherein the amount of Rh supported to the carrier is from 2% to 30% of the amount of Pd.7. The catalyst according to claim 6 , wherein the amount of Rh supported on the carrier is from 5% to 20% of the amount of Pd.8. The catalyst according to claim 1 , wherein Rh and Pd are the only metals of Group 9 and Group 10 of the Periodic Table supported on its carrier.9. A method for manufacturing the catalyst according to claim 1 , comprising impregnating the carrier with Pd and Rh precursors.10. The method according to claims 9 , wherein the precursors comprise an inorganic or organic salt of Pd and an inorganic or organic salt of Rh.11. The method according to claim 10 , wherein the precursors comprise a halide salt of Pd and a halide salt of Rh.12. The method according to claim 1 , wherein Rh and Pd are the only metals of Group 9 and Group 10 of the Periodic Table supported on the ...

Подробнее
Номер записи: 100