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Небесная энциклопедия

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

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Мониторинг СМИ

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

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Применить Всего найдено 3795. Отображено 100.
26-01-2012 дата публикации

Fischer-tropsch synthesis catalyst, preparation and application thereof

Номер: US20120022174A1
Автор: Baoshan Wu, Hongwel Xiang, Yong Yang, Yongwang Li
Принадлежит: Synfuels China Technology Co Ltd

A micro-spherical Fe-based catalyst for a slurry bed Fischer-Tropsch synthesis (FTS) comprises Fe as its active component, a transitional metal promoter M, a structure promoter S and a K promoter. The transitional metal promoter M is one or more selected from the group consisting of Mn, Cr and Zn, and the structure promoter S is SiO 2 and/or Al 2 O 3 . The weight ratio of the catalyst components is Fe: transitional metal promoter: structure promoter: K=100:1-50:1-50:0.5-10. Preparation method of the catalyst comprises: adding the structure promoter S into a mixed solution of Fe/M nitrates, then co-precipitating with ammonia water to produce a slurry, filtering and washing the slurry to produce a filter cake, adding the required amount of the K promoter and water to the filter cake, pulping and spray drying, and roasting to produce the micro-spherical Fe-based catalyst for the slurry bed Fischer-Tropsch synthesis. The catalyst has good abrasion resistance and narrow particle size distribution, furthermore, it has high conversion capability of synthesis gas, good product selectivity and high space time yield, and the catalyst also can be used for the slurry bed Fischer-Tropsch synthesis in a wide temperature range.

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Номер записи: 1
14-03-2013 дата публикации

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

Номер: US20130065752A1
Автор: Arndt Axel, Doye Christian, Krüger Ursus, Pyritz Uwe
Принадлежит:

A component has a catalyst surface including metal regions and regions of MnO2 contacting the former, wherein the metal regions are made of Co and/or Sn and/or Zn (or alloys of said metals). Said material pairings achieve a significantly improved catalytic effect in comparison to the pure metals. Said surfaces can be used, for example, in room air purification for reducing ozone content. The surface can be applied, for example, by coating the component, wherein the metal region and the region of MnO2 are applied in two layers. 120-. (canceled)21. A component part comprising:a catalyst surface comprising metallic regions of Co or Sn or Zn or alloys of at least one of these metals, and{'sub': '2', 'regions of MnOin contact with the metallic regions,'}{'sub': '2', 'wherein the regions of MnOcomprise nanoparticles having a diameter greater than 100 nm.'}22. The component part of claim 21 , wherein the manganese oxide comprises the γ polymorph of MnO.23. The component part of claim 22 , wherein the structural proportion of the manganese oxide present in the γ polymorph is more than 50% by weight.24. The component part of claim 21 , wherein the surface area proportion of the regions of MnOin relation to the sum of the metallic regions of Co or Sn or Zn or alloys of at least one of these metals is between 30 and 60%.25. The component part of claim 21 , comprising a metallic material which provides the metallic region of Co or Sn or Zn or alloys of at least one of these metals claim 21 , and an only partly covering layer of MnOhas been applied to this component part.26. The component part of claim 21 , comprising a ceramic which provides the region of MnO claim 21 , and wherein a partial covering layer of Co or Sn or Zn or alloys of at least one of these metals is applied to the component part.27. The component part of claim 21 , comprising a coating which provides the metallic regions of Co or Sn or Zn or alloys of at least one of these metals and the regions of MnOon the ...

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Номер записи: 2
28-03-2013 дата публикации

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

Номер: US20130079218A1
Автор: Arndt Axel, Doye Christian, Krüger Ursus, Pyritz Uwe
Принадлежит:

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

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Номер записи: 3
28-03-2013 дата публикации

Process For The Hydrogenation Of Fatty Acids Using A Promoted Supported Nickel Catalyst

Номер: US20130079535A1
Автор: Robert Johan Andreas Maria Terorde, Tjalling Rekker
Принадлежит: BASF Corp

The invention is directed to a process for the hydrogenation of unsaturated fatty acids to produce saturated fatty acids, said process comprising hydrogenating the unsaturated fatty acid in the presence of hydrogen and a supported nickel catalyst, said supported nickel catalyst comprising an oxidic support, 5 to 80 wt. % of nickel, calculated as metallic nickel on the weight of the catalyst, and 0.1 to 10 wt. % of a manganese promoter, calculated as MnO 2 on the weight of the catalyst.

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Номер записи: 4
13-06-2013 дата публикации

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

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

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

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Номер записи: 5
27-06-2013 дата публикации

ZINC AND/OR MANGANESE ALUMINATE CATALYST USEFUL FOR ALKANE DEHDYROGENATION

Номер: US20130165729A1
Автор: Laha Subhash Chandra, Selvanathan Antonisamy
Принадлежит: SAUDI BASIC INDUSTRIES CORPORATION

The present invention relates to a catalyst composition suitable for the dehydrogenation of alkanes having 2-8 carbon atoms comprising zinc and/or manganese aluminate, optionally further comprising sodium (Na), potassium (K), caesium (Cs), rubidium (Rb), strontium (Sr), barium (Ba), magnesium (Mg), calcium (Ca), gallium (Ga), germanium (Ge),tin (Sn), copper (Cu), zirconium (Zr), cobalt (Co), tungsten (W) or mixtures thereof, wherein said catalyst composition preferably is essentially platinum free. Furthermore, a method for preparing said catalyst composition and a process for dehydrogenating alkanes having 2-8 carbon atoms, preferably isobutane, comprising contacting the said catalyst composition with said alkanes is provided. 1. A catalyst composition suitable for the dehydrogenation of alkanes having 2-8 carbon atoms comprising zinc and/or manganese aluminate , wherein the relative molar ratios of the elements comprised in said composition are represented by the formula{'br': None, 'sub': 1-y', 'y', '2', '4, 'M/ZnMnAlO'}wherein:0-5 wt-% M based on the zinc and/or manganese aluminate is present in the catalyst composition and M is selected from the group of sodium (Na), potassium (K), caesium (Cs), rubidium (Rb), strontium (Sr), barium (Ba), magnesium (Mg), calcium (Ca), gallium (Ga), germanium (Ge), or tin (Sn), copper (Cu), zirconium (Zr), cobalt (Co), tungsten (W) and mixtures thereof, andy is in the range of 0-1.2. The catalyst composition according to claim 1 , wherein said catalyst composition is essentially platinum free.3. The catalyst composition according to claim 1 , wherein the zinc and/or manganese aluminate has spinel structure.4. The catalyst composition according to any claim 1 , wherein y=0.01-0.99.5. The catalyst composition according to claim 1 , wherein M is 0.01-0.1 wt-% gallium (Ga) or tin (Sn).6. The catalyst composition according to claim 1 , wherein in case y stands for 0 claim 1 , M is present in an amount from 0.01 to 1.Swt % based on ...

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Номер записи: 6
04-07-2013 дата публикации

CATALYST FOR THE DECOMPOSITION OF NITROGEN PROTOXIDE

Номер: US20130172178A1
Автор: CREMONA Alberto, Estenfelder Marvin, VOGNA EDOARDO
Принадлежит: SUD-CHEMIE CATALYSTS ITALIA S.R.L.

A catalyst for removing nitrogen protoxide from gas mixtures which contain it, comprising mixed oxides of cobalt, manganese and rare earth metals having composition expressed as percentage by weight of CoO, MnO and transition metal oxide in the lowest state of valence as follows: MnO 38-56%, CoO 22-30%, rare earth metal oxide 22-32%. 112-. (canceled)13. Catalyst for removing nitrogen protoxide from gas mixtures which contain it , comprising mixed oxides of cobalt , manganese and rare earth metals having composition expressed as percentage by weight of CoO , MnO and transition metal oxide in the lowest state of valence as follows: MnO 38-56% , CoO 22-30% , rare earth metal oxide 22-32%. the skin of the user , preventing a return of condensation toward the skin.14. The catalyst according to used in the removal of nitrogen protoxide present in the emissions of plants for the production of nitric acid and adipic acid.15. The catalyst according to wherein the gaseous mixtures containing the nitrogen protoxide are contacted with the catalysts at temperatures between 400° and 900° C.16. The catalyst according to wherein the emissions released by plants are made to pass over a fixed bed kept at temperatures between 600° and 900° C.17. The catalyst according to wherein the catalyst comprises lanthanum oxide.18. The catalyst according to wherein the catalyst is supported on an inorganic porous oxide.19. The catalyst according to wherein the catalyst is supported on microspheroidal alumina.20. The catalyst according to wherein the catalyst is supported on granules which have the shape of perforated cylinders or with one or more lobes having through holes parallel to the axis of the granule.21. The process for preparing the catalyst according to wherein the support is first impregnated with an aqueous solution of a salt of lanthanum or other rare earth metal claim 18 , dried and then calcinated at temperatures between 450° and 600° C. and subsequently impregnated with a ...

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Номер записи: 7
08-08-2013 дата публикации

FISCHER-TROPSCH CATALYSTS

Номер: US20130199966A1
Автор: Borg Oyvind, Eri Sigrid, Koranne Manoj M., Rytter Erling
Принадлежит: GTL.F1 AG

A method of producing an aluminium oxide supported catalyst for use in a Fischer-Tropsch synthesis reaction, which comprises: spray-drying a slurry of γ-alumina and a source of a spinel forming metal to form a solid precursor material; calcining the precursor material to form a modified support material including a metal aluminate spinel; impregnating the modified alumina support material with a source of cobalt; calcining the impregnated support material, and activating the catalyst. 1. A method of producing a modified aluminium oxide supported catalyst , the method comprising the steps of:forming a slurry by mixing aluminium oxide, a metal compound capable of forming a spinel phase, and a soluble compound of trivalent aluminium;a solid material from the slurry into a solid precursor material;calcining the precursor material at a temperature of at least 700° C. to produce a modified aluminium oxide support material including a metal aluminate spinel phase compound formed by the metal capable of forming a spinel phase and the aluminium oxide;impregnating the modified aluminium oxide support material with a source of catalytically active metal to form an impregnated modified aluminium oxide support material; andcalcining the impregnated modified aluminium oxide support material at a temperature of at least 150° C. to produce the modified aluminium oxide supported catalyst.2. The method of claim 1 , wherein the aluminium oxide is selected from the group consisting of gamma alumina claim 1 , delta alumina claim 1 , theta alumina claim 1 , eta alumina claim 1 , rho alumina claim 1 , and mixtures thereof.3. The method of claim 2 , wherein the aluminium oxide predominantly comprises gamma alumina.4. The method of claim 3 , wherein the gamma alumina is prepared by heating boehmite alumina at a temperature sufficient to convert boehmite alumina to gamma alumina.5. The method of claim 4 , wherein the boehmite alumina is heated to a temperature in the range of 400° C. to 700° ...

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Номер записи: 8
12-09-2013 дата публикации

Methods of Higher Alcohol Synthesis

Номер: US20130232861A1
Автор: Berggren Mark, White Emily Bostwick, Wilson Cherie, Zubrin Robert M.
Принадлежит: Pioneer Energy, Inc.

Systems, catalysts, and methods are provided for transforming carbon based material into synthetic mixed alcohol fuel. 1. A method of producing liquid fuel from synthesis gas , the method comprising reacting the gas at pressures between about 500 and about 3000 psi and temperatures between about 200° C. and about 400° C. over a catalyst , wherein the catalyst is copper , zinc , and potassium on a substrate.2. The method of claim 1 , wherein the catalyst further comprises cobalt claim 1 , manganese claim 1 , or both cobalt and manganese.3. The method of claim 1 , wherein the substrate is selected from the group consisting of silica claim 1 , carbon nanotubes claim 1 , and aluminum oxide.4. The method of claim 1 , wherein the liquid fuel produced comprises methanol claim 1 , ethanol claim 1 , propanol claim 1 , butanol claim 1 , hydrocarbons claim 1 , and/or mixtures thereof.5. The method of claim 5 , wherein the methanol component of the product is removed via distillation to increase the energy content of the remaining fuel.6. The method of claim 1 , wherein the synthesis gas is produced by steam reforming of biomass claim 1 , corn stover claim 1 , lignin claim 1 , hemicellulose claim 1 , coal claim 1 , natural gas claim 1 , landfill gas claim 1 , and/or trash.7. The method of claim 1 , wherein the synthesis gas is produced using the reverse water gas shift to convert COto CO.8. The method of claim 1 , wherein waste COand hydrogen are converted into CO using reverse water gas shift claim 1 , and wherein the CO is used as synthesis gas.9. A method of producing butanol claim 1 , the method comprising reacting methanol with ethanol claim 1 , propanol claim 1 , or mixtures thereof at pressures under 3000 psi and temperatures between about 200° C. and about 400° C. using a catalyst claim 1 , wherein the catalyst comprises copper on hydrotalcite.10. The method of claim 10 , wherein the hydrotalcite is a strongly basic variety and has a MgO to AlOratio greater than 1:1.11. ...

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Номер записи: 9
19-09-2013 дата публикации

Catalyst For Direct Decomposition of Nitric Oxide And Method of Manufacturing The Catalyst

Номер: US20130244866A1
Автор: Camra Józef, Dutkiewicz Jaroslaw, Janiga Stanishaw, Kornelak Pawel, Kozicki Mateusz, Lasocha Alicia, Lasocha Wieslaw, Najbar Mieczyslawa, Nazarczuk Iga, Weselucha Aleksandra
Принадлежит: UNIWERSYTET JAGIELLONSKI

The oxide catalyst for the direct NO decomposition to N2 and 02 is deposited on the austenitic acid-proof steel substrate and contains the phase with aFe203 structure and the phase with spinel structure and the lattice parameters close to the lattice parameters of NiFe204. Those phases form the micro-crystallites that additionally contain Cr and Mn and eventually Si. The catalyst according to the invention is manufactured by the at least twice heating of the austenitc acid-proof steel substrate in the atmosphere containing oxygen, up to the temperature from the 600-850° C. range, with the rate of 2-6° C./min, followed by the annealing at that temperature for 2-6 hours. 1. The oxide catalyst for the direct NO decomposition to Nand Odeposited on metallic substrate , characterized in that the austenitic acid proof steel is the substrate and the catalyst is biphasic and contains the phase with αFeOstructure and the phase with spinel structure. The lattice parameters of the spinel phase are very close to the lattice parameters of NiFeO. The phases form micro crystallites containing additionally Cr , Mn and possibly Si with the concentrations: 3.6-8.8 at. % of Cr , and 1.4-3.4 at. % of Mn in the phase with NiFeOstructure and 0.1-1.7 at. % of Cr , 0.1-0.3 at. % of Mn and 0-0.2 at.% of Si in the phase with α-FeOstructure. The content of the spinel phase in the catalyst is equal to 28%-36% wt. % and the content of the phase with αFeOstructure is equal to 64-72 wt. %.2. The catalyst according to the characterized in that in the phase with αFeOstructure no more than 1.5% of the Fe ions is substituted by Cr ions claim 1 , whereas in the phase with NiFeOstructure no more than 12% of the Fe ions is substituted by Cr ions and no more than 10% of the Ni ions is substituted by Mn ions.3. The catalyst according to the characterized in that the chromium-nickel steel is the substrate.4. The catalyst according to the characterized in that the steel contains titanium.5. The catalyst ...

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Номер записи: 10
26-09-2013 дата публикации

CATALYSTS FOR THERMOCHEMICAL FUEL PRODUCTION AND METHOD OF PRODUCING FUEL USING THERMOCHEMICAL FUEL PRODUCTION

Номер: US20130252808A1
Автор: Haile Sossina M., YAMAZAKI Yoshihiro, Yang Chih-Kai
Принадлежит:

To provide a catalyst, which is formed from a perovskite oxide, for thermochemical fuel production, and a method of producing fuel using thermochemical fuel production that is capable of allowing a fuel to be produced in a thermochemical manner. 1. A catalyst for thermochemical fuel production , which is used for producing the fuel from thermal energy by using a two-step thermochemical cycle of a first temperature and a second temperature that is equal to or lower than the first temperature ,{'sub': '3±δ', 'wherein the catalyst is formed from a perovskite oxide having a compositional formula of AXO (provided that, 0≦δ<1) (here, A represents any one or more of a rare-earth element (excluding Ce), an alkaline earth metal element, and an alkali metal element, X represents one or more of a transition metal element and a metalloid element, and O represents oxygen).'}2. The catalyst for thermochemical fuel production according to claim 1 ,wherein the element A is one or more selected from a group consisting of La, Mg, Ca, Sr, and Ba, and the element X is one or more selected from a group consisting of Mn, Fe, Ti, Zr, V, Cr, Co, Ni, Cu, Zn, Mg, Al, Ga, In, C, Si, Ge, and Sn.3. The catalyst for thermochemical fuel production according to claim 2 ,wherein the element A is La, and the element X is Mn.4. The catalyst for thermochemical fuel production according to claim 1 ,wherein the element A is partially substituted with one or more of Sr, Ca, and Ba.5. The catalyst for thermochemical fuel production according to claim 1 ,wherein the element X is partially substituted with one or more of Fe, Ni, V, Cr, Sc, Ti, Co, Cu, and Zn.6. The catalyst for thermochemical fuel production according to claim 1 ,wherein the element A is La, the element X is Mn, La is partially substituted with Sr.7. The catalyst for thermochemical fuel production according to claim 6 , wherein the substituted concentration (x; x represents an amount with an amount of La before substitution being set to 1) ...

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Номер записи: 11
19-12-2013 дата публикации

CATALYTIC SURFACES AND COATINGS FOR THE MANUFACTURE OF PETROCHEMICALS

Номер: US20130337999A1
Автор: Chen Yan, Deuis Robert Leslie, Kong Fuwing, Petrone Sabino Steven Anthony
Принадлежит:

This disclosure describes a coating composition comprising: MnO, MnCrO, or combinations thereof in a first region of a coating having a first thickness, wherein x and y are integers between 1 and 7; and XW(Si, C) in a second region of the coating having a second thickness, wherein X is Ni or a mixture of Ni and one or more transition metals and z ranges from 0 to 1. 1. A coating composition comprising:{'sub': x', 'y', '2', '4, 'MnO, MnCrO, or combinations thereof in a first region of a coating having a first thickness, wherein x and y are integers between 1 and 7; and'}{'sub': 6', '6', 'z', '1-z, 'XW(Si, C) in a second region of the coating having a second thickness, wherein X is Ni or a mixture of Ni and one or more transition metals and z ranges from 0 to 1.'}2. The coating composition of claim 1 , wherein the second region has an overall composition comprising Ni in a range of 10-45 wt % claim 1 , Mn in a range of 1.5-12 wt % claim 1 , Fe in a range of 2-10 wt % claim 1 , Si and/or C in a range of 5-10 wt % claim 1 , W in a range of 35-80 wt % claim 1 , and Cr in a range of 0.5-5 wt % claim 1 , Nb in a range of 0-2 wt % claim 1 , and Ti in a range of 0-2 wt %.3. The coating composition of claim 1 , wherein the first thickness is 0.5-20 microns.4. The coating composition of claim 3 , wherein the first thickness is 1-10 microns.5. The coating composition of claim 1 , wherein the second thickness is 100-1000 microns.6. The coating composition of claim 5 , wherein the second thickness is 200-500 microns.7. The coating composition of claim 1 , wherein the transition metal comprises Fe claim 1 , Nb claim 1 , Cr claim 1 , Mn claim 1 , Ti claim 1 , Mo claim 1 , W claim 1 , and combinations thereof.8. The coating composition of claim 1 , wherein a first phase comprises 40-80% of the second region and the balance is a second phase.9. The coating composition of claim 1 , wherein the first region MnOis selected from the group consisting of MnO claim 1 , MnO claim 1 , MnO ...

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Номер записи: 12
16-01-2014 дата публикации

EXHAUST GAS PURIFYING CATALYST, EXHAUST GAS PURIFYING MONOLITH CATALYST, AND METHOD FOR MANUFACTURING EXHAUST GAS PURIFYING CATALYST

Номер: US20140018235A1
Автор: Akaishi Misaki, Hanaki Yasunari, Ito Junji, Naito Tetsuro, Wakamatsu Hironori
Принадлежит:

An exhaust gas purifying catalyst having a high purifying ability even if noble metal is not used as an essential component, an exhaust gas purifying monolith catalyst, and a method for manufacturing an exhaust gas purifying catalyst, are provided. The exhaust gas purifying catalyst includes an oxide having an oxygen storage and release capacity, and an oxide represented by the following formula (1) supported on the oxide having the oxygen storage and release capacity, 19.-. (canceled)10. An exhaust gas purifying catalyst , comprising:an oxide having an oxygen storage and release capacity; and {'br': None, 'sub': x', '1-x', '3-δ, 'LaMM′O\u2003\u2003(1)'}, 'an oxide represented by formula (1) supported on the oxide having the oxygen storage and release capacity,'}(wherein La represents lanthanum, M represents at least one element selected from the group consisting of barium (Ba), strontium (Sr) and calcium (Ca), M′ represents at least one element selected from the group consisting of iron (Fe), cobalt (Co), nickel (Ni) and manganese (Mn), δ represents an oxygen deficiency amount, and x and δ fulfill conditions represented by 0 Подробнее

Номер записи: 13
30-01-2014 дата публикации

Process for preparing olefins from synthesis gas using a cobalt and manganese containing catalyst

Номер: US20140031198A1
Автор: Michael Johannes Franciscus Maria Verhaak
Принадлежит: Shell Oil Co

The invention relates to a process for preparing a supported catalyst, wherein the catalyst contains cobalt, manganese and a third element selected from the group consisting of aluminium, gallium, indium, thallium, tin, lead and bismuth, and is prepared by co-precipitation of a manganese salt and a cobalt salt on a support, followed by impregnation with a salt of the third element. Further, the invention relates to the catalyst so obtained.

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Номер записи: 14
06-03-2014 дата публикации

CATALYST FOR THE OXIDATIVE DEHYDROGENATION OF BUTENE TO BUTADIENE AND PREPARATION PROCESS THEREOF

Номер: US20140066680A1
Автор: Fan Zhigui, Ma Chunjing, Miao Changxi, Wu Sheng, Wu Wenhai, Zeng Tieqiang
Принадлежит:

The present disclosure provides a catalyst for oxidative dehydrogenation of butene to butadiene, comprising at least one compound of formula ZnAlMFeO.Z(α-FeO), wherein M is at least one element chosen from Be, Mg, Ca, Sr, Mn, Ba, Cu, Co, and Ni, Z represents the percentage by weight of α-Fe2O3 in the catalyst and ranges from 10% to 70%. Also provided herein is a process of preparing said catalyst and the use of said catalyst in an oxidative dehydrogenation of butene to butadiene processes. 1. A catalyst for the oxidative dehydrogenation of butene to butadiene comprising at least one compound of formula ZnAlMFeO.Z(α-FeO) , wherein M is at least one element chosen from Be , Mg , Ca , Sr , Mn , Ba , Cu , Co , and Ni; Z is the percentage by weight of α-FeOin the catalyst , ranging from 1.0% to 70%; wherein b is not zero , and when b is 1 , a ranges from 0 to 10 , c is larger than zero and less than or equal to 4 , e ranges from 3 to 25 , f is greater than 4.5 and equal to or less than 48; and further wherein 2a+3b+2c+3e=2f.2. The catalyst according to claim 1 , wherein the catalyst comprises a spinel crystal phase and an α-FeOcrystal phase claim 1 , and the specific surface area of the catalyst ranges from 1 m/g to 80 m/g.3. The catalyst according to claim 1 , wherein M is at least two elements chosen from Be claim 1 , Mg claim 1 , Ca claim 1 , Sr claim 1 , Mn claim 1 , Ba claim 1 , Cu claim 1 , Co claim 1 , and Ni.4. The catalyst according to claim 1 , wherein a is not zero and b is 1.5. The catalyst according to claim 1 , wherein e ranges from 3 to 20 and b is 1.6. A catalyst for the oxidative dehydrogenation of butene to butadiene comprising at least one compound of formula ZnAlMFeO.Z(α-FeO) claim 1 , wherein M is at least one element chosen from Be claim 1 , Mg claim 1 , Ca claim 1 , Sr claim 1 , Mn claim 1 , Ba claim 1 , Cu claim 1 , Co claim 1 , and Z is the percentage by weight of α-FeOin the catalyst claim 1 , ranking from 10% to 70%; wherein a′ ranges from 0 to ...

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Номер записи: 15
05-01-2017 дата публикации

METHOD FOR PREPARING CATALYST USED FOR PREPARING CHLORINE, CATALYST AND METHOD FOR PREPARING CHLORINE

Номер: US20170001178A1
Автор: Ding Jiansheng, Hua Weiqi, Lou Yinchuan, LV Yang, SHAO Liangfeng, Yi Guangquan, Zhang Hongke
Принадлежит:

The present invention relates to a method for preparing catalyst used for preparing chlorine by oxidizing hydrogen chloride. The method is mixing a slurry mainly containing boron and chromium with a slurry mainly containing copper, boron, alkali-metal elements, rare-earth elements, aluminum sol, silica sol, carrier and optionally other metal elements, the mixing temperature being not more than 100° C., and the residence time being not more than 120 minutes, the mixed slurry is successively treated with spray drying, high temperature calcination, so that the catalyst is obtained. The present invention also relates to the catalyst prepared through the method, use of the catalyst used in the process of preparing chlorine by oxidizing hydrogen chloride and a method for preparing chlorine by using the catalyst. The catalyst is used for preparing chlorine by oxidizing hydrogen chloride with oxygen or air in fluidized bed reactor. 1. A method for preparing catalysts used for preparing chlorine by oxidizing hydrogen chloride , comprising the steps of:mixing a slurry A with a slurry B under the condition of a mixing temperature being >X° C. and ≦100° C., and a residence time being ≦120 minutes to obtain a mixed slurry;treating the mixed slurry with spray drying to obtain catalyst precursor particles; andcalcining the catalyst precursor particles to obtain the catalysts,wherein, X° C. is the highest value among the solidifying points of slurry A, slurry B and the mixed slurry; slurry A is acidic and contains boron and chromium; slurry B contains copper, boron, alkali-metal elements, rare-earth elements, aluminum sol, silica sol, carrier and optionally at least one of other metal elements selected from the group consisting of magnesium, calcium, barium, manganese, ruthenium and titanium.2. The method according to claim 1 , wherein slurry A is formed by mixing boron-containing compound claim 1 , chromium-containing compound and water; based on the weight of slurry A claim 1 , ...

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Номер записи: 16
14-01-2021 дата публикации

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

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

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

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Номер записи: 17
11-01-2018 дата публикации

Hydrocarbon Synthesis Catalyst, Its Preparation Process and Its Use

Номер: US20180008961A1
Автор: BOTHA Jan Mattheus, Cullen Adam, Meyer Rita, Taljaard Jana Heloise, Visagie Jacobus Lucas
Принадлежит:

The present invention relates to catalysts, more particularly to a cobalt-containing catalyst composition. The present invention further relates to a process for preparing a cobalt-containing catalyst precursor, a process for preparing a cobalt-containing catalyst, and a hydrocarbon synthesis process wherein such a catalyst is used. According to a first aspect of the invention, there is provided a cobalt-containing catalyst composition comprising cobalt and/or a cobalt compound supported on and/or in a catalyst support; the catalyst composition also including a titanium compound on and/or in the catalyst support, and a manganese compound on and/or in the catalyst support. 1. A cobalt-containing catalyst composition comprising cobalt and/or a cobalt compound supported on and/or in a catalyst support; the catalyst composition also including a titanium compound on and/or in the catalyst support , and a manganese compound on and/or in the catalyst support.2. The catalyst composition of wherein the catalyst composition includes a dopant capable of enhancing the reducibility of the cobalt compound.3. The catalyst composition of either one of or wherein the catalyst support is selected from the group consisting of alumina in the form of one or more aluminium oxides; silica (SiO); titania (TiO); magnesia (MgO); zinc oxide (ZnO); silicon carbide; and mixtures thereof.4. The catalyst composition of wherein the catalyst support is an alumina catalyst support or a silica (SiO) catalyst support.5. A process for preparing a cobalt-containing catalyst precursor claim 3 , the process comprising introducing a cobalt compound onto and/or into a catalyst support; prior to and/or during and/or subsequent to introducing the cobalt compound onto and/or into the catalyst support claim 3 , introducing a titanium compound onto and/or into the catalyst support; and prior to claim 3 , and/or during claim 3 , and/or subsequent to introducing the cobalt compound onto and/or into the catalyst ...

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Номер записи: 18
11-01-2018 дата публикации

FERRITE PARTICLES PROVIDED WITH OUTER SHELL STRUCTURE FOR CATALYST SUPPORTING MEDIUM

Номер: US20180008966A1
Автор: AGA Koji, Sugiura Takao
Принадлежит: POWDERTECH CO., LTD.

An object of the present invention is to provide ferrite particles for supporting a catalyst having a small apparent density, various properties are maintained in a controllable state and a specified volume is filled with a small weight, and a catalyst using the ferrite particles for supporting a catalyst. To achieve the object, ferrite particles for supporting a catalyst provided with an outer shell structure containing Ti oxide, a catalyst using the ferrite particles for supporting a catalyst are employed. 1. Ferrite particles for supporting a catalyst characterized in provided with an outer shell structure containing Ti oxide.2. The ferrite particles for supporting a catalyst according to claim 1 , wherein the thickness of the outer shell structure is 0.5 to 10 μm.3. The ferrite particles for supporting a catalyst according to claim 1 , wherein the density of the internal part is lower than that of the outer shell structure.4. The ferrite particles for supporting a catalyst according to claim 1 , wherein the volume average particle diameter of the ferrite particles is 10 to 100 μm.5. A catalyst characterized in using the ferrite particles for supporting a catalyst according to as a catalyst supporting medium.6. The catalyst according to characterized in that a catalytically active component is at least one colloidal particle of a metal selected from gold claim 5 , silver claim 5 , copper claim 5 , platinum claim 5 , rhodium claim 5 , ruthenium claim 5 , palladium claim 5 , nickel claim 5 , and cobalt. The present invention relates to ferrite particles, and more particularly to ferrite particles for supporting a catalyst which is suitably used as a catalyst supporting medium and a catalyst using the ferrite particles as a catalyst supporting medium.Ferrite particles are used in various applications. For example, Patent Document 1 (Japanese Patent Laid-Open No. 6-313176) discloses a fluid catalytic cracking catalyst composed of zeolite as active component and a ...

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Номер записи: 19
19-01-2017 дата публикации

Process for converting of methane steam reforming syngas with co2

Номер: US20170015549A1
Автор: Aghaddin Kh. Mammadov, Clark David REA, Shahid Shaikh
Принадлежит: Saudi Basic Industries Corp

In an embodiment, a process of making C 2+ hydrocarbons comprises contacting a feed comprising a methane steam reforming gas and an additional carbon dioxide with a manganese oxide-copper oxide catalyst to produce a product syngas in a contacting zone under isothermal conditions at a temperature of 620 to 650° C.; and converting the product syngas to C 2+ hydrocarbons in the presence of a Fischer-Tropsch catalyst; wherein the methane steam reforming gas has an initial H 2 :CO volume ratio greater than 3; wherein the product syngas has a H 2 :CO volume ratio of 1.5 to 3; and wherein the contacting further comprises removing water.

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Номер записи: 20
19-01-2017 дата публикации

CATALYTIC BIOMASS CONVERSION

Номер: US20170016179A1
Автор: ARRISON Norman, Laarveld Bernard, Olkowski Andrew A.
Принадлежит:

A biorefining method of processing a lignocellulosic biomass to separate lignin and hemicellulose from cellulose includes the steps of (a) reacting the biomass in an aqueous slurry having a pH less than 7, comprising a transition metal catalyst, hydrogen peroxide; and (b) 1. A method of producing a nanoparticulate catalyst comprising multivalent iron from an aqueous solution , comprising the steps of:(a) oxidizing or allowing to oxidize the aqueous solution comprising multivalent iron;(b) collecting precipitated nanoparticles or aggregated nanoparticles.2. The method of wherein the aqueous solution comprises groundwater.3. The method of comprising the further step of amending the aqueous solution with one or more additional transition metals claim 2 , prior to the oxidation step.4. The method of wherein the aqueous solution is amended with copper ions.5. A nanoparticulate catalyst comprising multivalent iron claim 3 , at least one iron oxide and at least one iron hydroxide.6. The catalyst of further comprising calcium carbonate.7. A method of using a nanoparticulate catalyst of to produce crystaline cellulose from biomass comprising the steps of:(a) reacting the biomass in an aqueous slurry having a pH less than 7, comprising the catalyst and hydrogen peroxide.1. A method of producing a nanoparticulate catalyst comprising multivalent iron from an aqueous solution claim 5 , comprising the steps of:(a) oxidizing or allowing to oxidize the aqueous solution comprising multivalent iron;(b) collecting precipitated nanoparticles or aggregated nanoparticles.2. The method of wherein the aqueous solution comprises groundwater.3. The method of comprising the further step of amending the aqueous solution with one or more additional transition metals claim 2 , prior to the oxidation step.4. The method of wherein the aqueous solution is amended with copper ions.5. A nanoparticulate catalyst comprising multivalent iron claim 3 , at least one iron oxide and at least one iron ...

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Номер записи: 21
15-01-2015 дата публикации

Optimum Loading of Copper-Manganese Spinel on TWC Performance and Stability of ZPGM Catalyst Systems

Номер: US20150018205A1
Автор: Golden Stephen J., Nazarpoor Zahra
Принадлежит:

Influence of a plurality of base metal loadings on TWC performance and thermal stability of ZPGM catalysts for TWC applications is disclosed. ZPGM catalyst samples are prepared and configured with washcoat on ceramic substrate, overcoat including doped Zirconia support oxide, and impregnation layer of Cu—Mn spinel with different base metal loadings. Testing of ZPGM catalyst samples including variations of base metal loadings is developed under isothermal steady state sweep test condition for fresh and aged ZPGM catalysts to evaluate the influence of variations of base metal loadings on TWC performance specially NOconversions and level of stability of NOx conversion. As a result disclosed ZPGM catalyst systems with an optimum base metal loadings exhibit high and stable NOx conversion which is suitable for under floor TWC application. 1. A method for optimizing a catalytic system , comprising: a substrate;', 'a washcoat suitable for deposition on the substrate, comprising alumina;', {'sub': '2', 'an overcoat suitable for deposition on the substrate, the overcoat comprising at least one support oxide material comprising ZrO; and'}, 'an impregnation layer suitable for deposition on the substrate, comprising copper-manganese spinel having a compositional ratio of X, wherein X comprises between 10 and 15 percent by weight copper and 15 to 25 percent by weight of manganese; and, 'providing a catalyst system, comprising{'sub': 'x', 'adjusting the ratio of copper to manganese to improve NOconversion.'}2. The method according to claim 1 , wherein the copper to manganese ratio is about 11.8% to about 20.4%.3. The method according to claim 1 , wherein the copper-manganese spinel has the general formula of CuMnO.4. The method according to claim 1 , wherein the catalytic system is hydrothermal aging at greater than 800° C.5. The method according to claim 4 , wherein the hydrothermal aging lasts for about 2 to about 6 hours.6. The method according to claim 4 , wherein the ...

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Номер записи: 22
17-01-2019 дата публикации

Conversion of polystyrene to benzoic acid

Номер: US20190016659A1
Автор: David Lee Sikkenga
Принадлежит: Individual

Polystyrene-containing polymers are converted to benzoic acid by catalytic oxidation of dissolved polystyrene under elevated temperature and pressure. The produced benzoic acid is recovered by evaporation.

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Номер записи: 23
28-01-2016 дата публикации

EXHAUST GAS PURIFICATION CATALYST

Номер: US20160023192A1
Автор: MINAMI Keiichi
Принадлежит:

To provide an excellent exhaust gas purification catalyst with satisfactory NOselective reductive purification performance at lower temperature, and having a satisfactory NO formation rate. 1. A selective reduction catalyst for exhaust gas purification , represented by the formula: CoMn)TiO(where x in the molar ratio is a value greater than 0 and 0.2 or less).2. The selective reduction catalyst for exhaust gas purification according to claim 1 , wherein x is 0.1 or more and 0.2 or less.3. An exhaust gas purification method claim 1 , employing the selective reduction catalyst for exhaust gas purification according to .4. An exhaust gas purification method claim 2 , employing the selective reduction catalyst for exhaust gas purification according to . The present invention relates to an exhaust gas purification catalyst, and particularly to a NO-selective reduction catalyst.In recent years, worldwide restrictions on exhaust gas are becoming tighter from the viewpoint of environmental protection. As one measure, exhaust gas purification catalysts are being employed in internal combustion engines. In order to efficiently remove the hydrocarbons (hereunder abbreviated as “HC”), CO and nitrogen oxides (hereunder abbreviated as “NOx”) in exhaust gas, exhaust gas purification catalysts employ precious metals such as Pt, Pd and Rh as catalyst components.Vehicles using such exhaust gas purification catalysts, such as gasoline engine vehicles and diesel engine vehicles, employ various types of systems designed to increase both catalytic activity and fuel efficiency. For example, in order to increase fuel efficiency, combustion is carried out under lean air/fuel ratio (A/F) conditions (oxygen excess) during steady operation, and in order to increase catalytic activity, combustion is temporarily conducted under stoichiometric (theoretical air/fuel ratio, A/F=14.7) to rich (fuel excess) conditions.This is because conventionally known catalysts including precious metals such as Pt ...

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Номер записи: 24
23-01-2020 дата публикации

GAS STORAGE DEVICES

Номер: US20200024065A1
Автор: Barratt Joe Michael, Sygrove Matthew James
Принадлежит: Simply Breathe Ltd

The invention relates to a device () for dispensing oxygen () under pressure. The device comprises a canister () filled with activated carbon () and oxygen () at a pressure of between 4 and 20 barg, when measured at room temperature. The canister is sealed with a valve assembly () allowing release of oxygen from the canister on actuation of the valve assembly. To ensure the activated carbon does not react with the oxygen generating carbon monoxide the device further comprises a catalyst () that prevents or significantly reduces the presence of carbon monoxide. In a further aspect there is a device () for dispensing a gas () under pressure which device comprises a canister () with a volume of 1 l or less filled with activated carbon () to adsorb the gas under a pressure of between 4 and 20 barg when measured at room temperature. The canister () is sealed with a valve assembly () crimped to the canister over a seal allowing release of the gas () from the canister on actuation of the valve assembly, wherein the gas is carbon dioxide, oxygen, nitrogen or air, and the canister is a steel canister. In a particularly favoured embodiment the device is filled with carbon dioxide and includes a high volume discharge valve making it useful as a pet behaviour correction device. 110301214301816. A device () for dispensing oxygen () under pressure comprising a canister () filled with at least 40% activated carbon () , by volume , and oxygen () at a pressure of between 4 and 17 barg , when measured at room temperature , which canister is sealed with a valve assembly () allowing release of oxygen from the canister on actuation of the valve assembly , characterised in that the device further comprises a catalyst () that prevents or significantly reduces the presence of carbon monoxide.2. The device as claimed in claim 1 , wherein the catalyst is one which converts carbon monoxide to carbon dioxide at ambient temperature.3. The device as claimed in claim 2 , wherein the catalyst ...

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Номер записи: 25
24-01-2019 дата публикации

Method for Elemental Analysis

Номер: US20190025266A1
Автор: KÜPPERS Werner, MACKE Jan
Принадлежит: C. Gerhardt GmbH & Co. KG

The invention relates to a method for elemental analysis, in particular for determining carbon and nitrogen in a sample, an apparatus suitable for said method, and the use of a catalyst suitable for said method, the catalyst being a metal oxide catalyst comprising oxides of Ce, Cu and Mn. 1. A method for elemental analysis for determination of the amount of carbon and nitrogen in a sample , comprising:(a) feeding the sample to a first part of a combustion unit at a temperature of at least 500° C. and an atmosphere with a high oxygen content,(b) passing resultant gas from step (a) over a metal oxide catalyst in a second part of the combustion unit, wherein the metal oxide catalyst comprises oxides of Ce, Cu and Mn,(c) reducing nitrogen oxides obtained from step (b) to nitrogen,(d) measuring the amount of nitrogen in the sample obtained from step (c),{'sub': 2', '2, '(e)separating HO and COfrom the sample obtained from step (c), and'}{'sub': '2', '(f) measuring the amount of carbon in the sample by determining the COcontent.'}2. The method according to claim 1 , wherein the sample is introduced into the combustion unit via an automatic sampler.3. The method according to claim 2 , wherein the amount of Ce claim 2 , Mn and Cu in the metal oxide catalyst satisfies the mass ratio Ce Подробнее

Номер записи: 26
02-02-2017 дата публикации

CATALYST COMPOSITION FOR PURIFYING EXHAUST GAS AND EXHAUST GAS PURIFYING CATALYST

Номер: US20170028387A1
Автор: Nagao Yuki, Nakahara Yunosuke, OGAWA Makoto
Принадлежит:

The present invention relates to a catalyst composition for purifying exhaust gas and an exhaust gas purifying catalyst which contain a manganese-containing composite oxide, and an object of the invention is to provide a novel catalyst composition which can sufficiently function as an exhaust gas purifying catalyst even without supporting a precious metal as a catalytically active component. To achieve the object, there is proposed a catalyst composition for purifying exhaust gas including particles containing a manganese-containing composite oxide and particles containing a metal of Group 5 to Group 11 having an electron in the d orbital (however, Mn, Pt, Rh, and Pd are excluded) or an oxide of the metal in a mixed state. 1. A catalyst composition for purifying exhaust gas comprising particles containing a manganese-containing composite oxide (also referred to as the “Mn-based oxide particles”) and particles containing a metal of Group 5 to Group 11 having an electron in the d orbital (however , Mn , Pt , Rh , and Pd are excluded) or an oxide of the metal (also referred to as the “mixed metal-oxide particles”) in a mixed state.2. The catalyst composition for purifying exhaust gas according to claim 1 , wherein an average particle size of the mixed metal-oxide particles is from 3 to 300% of an average particle size of the Mn-based oxide particles.3. The catalyst composition for purifying exhaust gas according to claim 1 , wherein an intensity of a main peak among the diffraction peaks attributed to the mixed metal-oxide is 5% or more of an intensity of a main peak among the diffraction peaks attributed to the Mn-based oxide in an XRD pattern determined by an XRD measurement (Cu/Kα).4. The catalyst composition for purifying exhaust gas according to claim 1 , wherein a content of the mixed metal-oxide particles (however claim 1 , the amount in terms of metal excluding the amount of oxygen (O) in the case of an oxide) is from 1 to 60 parts by mass with respect to 100 ...

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Номер записи: 27
29-01-2015 дата публикации

MANGANESE OXIDE-STABILIZED ZIRCONIA CATALYST SUPPORT MATERIALS

Номер: US20150031923A1
Автор: Libby Karen, Petzold Franz G., Shen Wenqin, Turbeville Wayne
Принадлежит: CLARIANT CORPORATION

The present disclosure relates generally to catalyst support materials, catalysts and methods for using them, such as methods for converting sugars, sugar alcohols, glycerol, and bio-renewable organic acids to commercially-valuable chemicals and intermediates. One aspect of the invention is catalyst support material including ZrOand one or more oxides of manganese (MnO), the catalyst support material being at least about 50 wt % ZrOand MnO. In certain embodiments, the weight ratio of ZrOto MnOis within the range of about 1:1 to about 30:1; and/or the catalyst support material is substantially free of any binder, extrusion aid or additional stabilizing agent. 1. A catalyst support material comprising ZrOand one or more oxides of manganese (MnO) the catalyst support material containing at least about 1 wt % to about 50 wt % of MnO.2. A catalyst support material according to claim 1 , wherein the catalyst support material being at least 50 wt % ZrOand MnO.3. A catalyst support material according to claim 1 , wherein the catalyst support material further comprises nickel oxide claim 1 , the catalyst support material containing at least about 1 wt % to about 50 wt % of MnOand at least 1 wt. % to 10 wt. % nickel oxide.4. A catalyst support material according to claim 1 , wherein the weight ratio of ZrOto MnOis within the range of about 1:1 to about 30:1.5. A catalyst support material according to claim 1 , further comprising oxides of yttrium and/or lanthanum claim 1 , wherein the molar ratio of the ZrOto the oxides of yttrium and/or lanthanum is within the range of about 10:1 to about 100:1.6. A catalyst support material according to claim 1 , wherein the catalyst support material has a pore volume within the range of about 0.1 to about 0.5 cm/g.7. A catalyst support material according to claim 1 , wherein the catalyst support material has a surface area within the range of about 10 to about 400 m/g.8. A catalyst support material according to claim 1 , wherein the ...

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Номер записи: 28
08-02-2018 дата публикации

Fischer-tropsch process using reductively-activated cobalt catalyst

Номер: US20180037825A1
Автор: Alexander Paterson, Ewen Ferguson, Manuel OJEDA PINEDA, Matthew James Wells
Принадлежит: BP PLC

A process for the conversion of a feed comprising a mixture of hydrogen and carbon monoxide to hydrocarbons, the hydrogen and carbon monoxide in the feed being present in a ratio of from 1:9 to 9:1 by volume, the process comprising the steps of: pre-treating a catalyst composition comprising titanium dioxide support and oxidic cobalt or a cobalt compound decomposable thereto, for a period of from 1 to 50 hours, with a hydrogen gas-containing stream comprising less than 10% carbon monoxide gas by volume of carbon monoxide gas and hydrogen gas, to form a reductively-activated catalyst; and contacting the feed at elevated temperature and atmospheric or elevated pressure with the reductively-activated catalyst; wherein the step of pre-treating the catalyst composition is conducted within a temperature range of from 200° C. to less than 300° C., preferably from 220° C. to 280° C., more preferably from 250° C. to 270° C.

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Номер записи: 29
24-02-2022 дата публикации

METHOD AND SYSTEM FOR PRE-PURIFICATION OF A FEED GAS STREAM

Номер: US20220054976A1
Автор: Celik Cem E., Grahl Matthias, Mancini Ralph J., Schneider Helko, SELOVER ARTHUR C., Vemuri Sesha Hari
Принадлежит:

A system and method of pre-purification of a feed gas stream is provided that is particularly suitable for pre-purification of a feed air stream in cryogenic air separation unit. The disclosed pre-purification systems and methods are configured to remove substantially all of the hydrogen, carbon monoxide, water, and carbon dioxide impurities from a feed air stream and is particularly suitable for use in a high purity or ultra-high purity nitrogen plant. The pre-purification systems and methods preferably employ two or more separate layers of hopcalite catalyst with the successive layers of the hopcalite separated by a zeolite adsorbent layer that removes water and carbon dioxide produced in the hopcalite layers. 1. A method of purifying a feed stream to reduce the hydrogen and carbon monoxide impurities present in the feed stream , the method comprising the steps of:(a) passing the feed stream through at least one layer of adsorbent configured to remove water and carbon dioxide from the feed stream and yield a dry feed stream substantially free of water and carbon dioxide;(b) passing the dry feed stream through a first layer of manganese oxide and copper oxide containing catalyst configured to remove at least some of the carbon monoxide and hydrogen from the dry feed stream and produce a first intermediate effluent stream;(c) passing the first intermediate effluent stream through a first intermediate layer disposed downstream of the first layer of manganese oxide and copper oxide containing catalyst, the first intermediate layer configured to remove at least carbon dioxide from the first intermediate effluent stream and produce a second intermediate effluent stream; and(d) passing the second intermediate effluent stream through a second layer of manganese oxide and copper oxide containing catalyst disposed downstream of the first intermediate layer and configured to remove at least hydrogen from the second intermediate effluent stream to yield third intermediate ...

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Номер записи: 30
18-02-2021 дата публикации

MANGANESE-DOPED NICKEL METHANIZATION CATALYSTS HAVING ELEVATED SULPHUR RESISTANCE

Номер: US20210047246A1
Автор: GEISBAUER Andreas
Принадлежит:

A process for the methanation of carbon monoxide and/or carbon dioxide in a feed stream containing carbon monoxide and/or carbon dioxide is disclosed. This is achieved by a process for the methanation of carbon monoxide and/or carbon dioxide in a feed stream containing carbon monoxide and/or carbon dioxide, hydrogen and more than 1 ppb of sulfur, using a catalyst comprising aluminum oxide, an Ni active composition and Mn. It has surprisingly The Mn-containing Ni catalyst has a high sulfur resistance and also a high sulfur capacity. 1. A process for the methanation of carbon monoxide and/or carbon dioxide in a feed stream containing carbon monoxide and/or carbon dioxide , hydrogen and more than 1 ppb of sulfur , using a catalyst comprising aluminum oxide , an Ni active composition and Mn , wherein the molar ratio of Ni/Mn in the catalyst is in the range from 1.0 to 15.0 , preferably from 2.0 to 12.0.2. The process as claimed in claim 1 , wherein the catalyst has been produced by coprecipitation.3. The process as claimed in claim 1 , wherein the molar ratio of Ni/Mn in the catalyst is in the range from 2.0 to 6.0 or from 3.5 to 5.5.4. The process as claimed in claim 1 , wherein the molar ratio of Al/Ni in the catalyst is in the range from 0.1 to 0.9 claim 1 , preferably from 0.3 to 0.7.5. The process as claimed in claim 1 , wherein the catalyst has been produced by impregnation of aluminum oxide with a solution comprising Ni.6. The process as claimed in claim 5 , wherein the solution comprising Ni also contains Mn.7. The process as claimed in claim 5 , wherein the molar ratio of Ni/Mn in the catalyst is in the range from 6.0 to 10.0 claim 5 , particularly preferably from 7.5 to 9.5.8. The process as claimed in claim 5 , wherein the molar ratio of Al/Ni in the catalyst is in the range from 2 to 9 claim 5 , preferably from 2.3 to 5.9. The process as claimed in claim 1 , wherein the feed stream contains more than 1 ppb claim 1 , preferably more than 4 ppb claim 1 , ...

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Номер записи: 31
15-02-2018 дата публикации

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

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

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

Номер записи: 32
19-02-2015 дата публикации

Oxygen storage material without rare earth metals

Номер: US20150051067A1
Автор: Golden Stephen J., Nazarpoor Zahra
Принадлежит: CDTI

The present disclosure relates to an enhanced oxygen storage material (OSM) that may be converted into powder form and used as a raw material for a vast number of applications, and more particularly in catalyst systems. The disclosed OSM, substantially free from PGM and rare earth (RE) metals, has significantly higher oxygen storage capacity (OSC) than conventional OSM including PGM and RE metals. The disclosed OSM may be converted into powder, including a formulation of Cu—Mn spinel structure deposited on Nb—Zr oxide support. The disclosed OSM may also be coated onto a ceramic substrate as washcoat layer for characterization under OSC isothermal oscillating condition. The disclosed OSM may have an optimal OSC property that increases with the temperature, showing acceptable level of Ostorage even at low temperatures. 1. A catalyst system , comprising:a substrate; andat least one oxygen storage material that is substantially free of platinum group metals;{'sub': 2', '4', '2', '5', '2, 'wherein the at least one oxygen storage material comprises at least one of CuMnO, NbO—ZrO, and combinations thereof.'}2. The catalyst system of claim 1 , wherein the CuMnOis in a spinel phase.3. The catalyst system of claim 1 , wherein the NbO—ZrOcomprises about 15% to about 30% by weight of NbO.4. The catalyst system of claim 1 , wherein the NbO—ZrOcomprises about 25% by weight of NbO.5. The catalyst system of claim 1 , wherein the NbO—ZrOcomprises about 70% to about 85% by weight of ZrO.6. The catalyst system of claim 1 , wherein the NbO—ZrOcomprises about 75% by weight of ZrO.7. The catalyst system of claim 1 , wherein the at least one oxygen storage material is deposited on the substrate at about 120 g/L.8. The catalyst system of claim 2 , wherein the Cu—Mn spinel structure comprises about 10 g/L to about 15 g/L of Cu.9. The catalyst system of claim 2 , wherein the Cu—Mn spinel structure comprises about 20 g/L to about 25 g/L of Mn.10. The catalyst system of claim 1 , wherein the ...

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Номер записи: 33
03-03-2022 дата публикации

EXHAUST GAS PURIFICATION SYSTEM WITH AIR INJECTION

Номер: US20220065149A1
Автор: CHEN CHUN YU, CHEN Shau Lin
Принадлежит:

The present invention relates to an exhaust gas purification system comprising two catalytic sub-systems, wherein the first catalytic sub-system is for conversion of NOx, HC, CO and optionally particulate matter, and the second sub-system is for conversion of CO. The second sub-system locates at the downstream of the first catalytic sub-system. An air injection is positioned between the first catalytic sub-system and second catalytic sub-system.

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Номер записи: 34
25-02-2016 дата публикации

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

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

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

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Номер записи: 35
25-02-2021 дата публикации

SUPPORTED MULTIMETALLIC CATALYSTS FOR OXIDATIVE DEHYDROGENATION OF ALKANES

Номер: US20210053032A1
Автор: Bunquin Jeffrey C., Ferrandon Magali S.
Принадлежит: UCHICAGO ARGONNE, LLC

A catalyst for oxidative dehydrogenation of alkanes includes a substrate including an oxide; at least one promoter including a transition metal or a main group element of the periodic table; and an oxidation-active transition metal. The catalyst is multimetallic. 1. A catalyst for oxidative dehydrogenation of alkanes , the catalyst comprising:a substrate comprising an oxide;at least one promoter comprising a transition metal or a main group element of the periodic table; andan oxidation-active transition metal,wherein the catalyst is multimetallic.2. The catalyst of claim 1 , wherein the oxidation-active transition metal comprises manganese claim 1 , nickel or vanadium.3. The catalyst of claim 1 , wherein the oxidation-active transition metal comprises manganese.4. The catalyst of claim 1 , wherein the substrate is selected from the group consisting of SiO claim 1 , AlO claim 1 , TiO claim 1 , and ZrO.5. The catalyst of claim 1 , wherein the at least one promoter comprises a Lewis acidic and redox-active promoter.6. The catalyst of claim 1 , wherein the at least one promoter is selected from the group consisting of Cr claim 1 , Zr claim 1 , Ni claim 1 , and V.7. The catalyst of claim 1 , wherein the at least one promoter comprises an oxide layer of the transition metal or the main group element of the periodic table having a general formula of MO claim 1 , where M is the transition metal or the main group metal of the periodic table.8. The catalyst of claim 1 , wherein the at least one promoter is selected from the group consisting of Zn claim 1 , Fe claim 1 , Ga claim 1 , Cr claim 1 , Zr claim 1 , Ni claim 1 , and V.9. The catalyst of claim 1 , wherein the catalyst is doped with an element selected from the Group I elements of the periodic table claim 1 , the Group II elements of the periodic table claim 1 , or the main group elements of the periodic table.10. The catalyst of claim 1 , wherein the oxidation-active transition metal is dispersed on at least the ...

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Номер записи: 36
25-02-2021 дата публикации

Preparation of a cobalt-containing catalyst

Номер: US20210053045A1
Автор: Erwin Roderick Stobbe, Jurjen Meeuwissen
Принадлежит: SHELL OIL COMPANY

The present invention is directed to the preparation of a cobalt containing catalyst, a precipitate as an intermediate product, a Fischer-Tropsch catalyst and a process for producing normally gaseous, normally liquid and optionally normally solid hydrocarbons from synthesis gas. The precipitate and catalyst comprise crystalline Co(OH)(CO3)0.5, the crystals are needle shaped and have a surface area of at least 80 m2/g dry precipitate.

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Номер записи: 37
08-05-2014 дата публикации

Catalyst for single step conversion of glycerol to acrylic acid and process for the preparation thereof

Номер: US20140128632A1
Автор: Bipul Sarkar, Chandrashekar Pendem, Rajaram Bal, RAJIB KUMAR Singha, Shilpi Ghosh, Shubhra Acharyya Shankha
Принадлежит: Council of Scientific and Industrial Research CSIR

The present invention provides a process and a solid catalyst for oxydehydration of glycerol to acrylic acid with H 2 O 2 under mild experimental condition at atmospheric pressure. The process provides a single step liquid phase selective oxidation glycerol to acrylic acid over nanocrystalline Cu supported α-MnO 2 catalyst. The process provides glycerol conversion of 20-78% and selectivity of acrylic acid up to 86%.

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Номер записи: 38
08-05-2014 дата публикации

CATALYST FOR THE OXYCHLORINATION OF ETHYLENE TO 1, 2-DICHLOROETHANE

Номер: US20140128643A1
Автор: Kramer Keith, Tompers Rolf
Принадлежит:

This invention relates to a catalyst containing from about 2 up to about 8% by wt. of copper, zero up to about 0.6 moles/kg of one or more alkali metal(s), from about 0.08 up about 0.85 moles/kg of one or more alkaline earth metals and from about 0.09 up to about 0.9 moles/kg of one or more transition metals selected from the group consisting of Mn, Re and mixtures thereof, where all the metals are impregnated in form of their chlorides or other water soluble salts on a fluidizable support with a BET surface area of from about 80 up to about 220 m/g. A process for the oxychlorination of ethylene to form 1,2-dichloroethane using such a catalyst having good activity, good selectivity and low tendency to stickiness in fluidized bed oxychlorination reactions. 1. A catalyst composition comprising a support having deposited thereon catalytically active metals comprising from about 2 up to about 8% by wt. of copper , zero up to about 0.6 moles/kg of one or more alkali metals , from about 0.08 up about 0.85 moles/kg of one or more alkaline earth metals and from about 0.09 up to about 0.9 moles/kg of one or more transition metals selected from the group consisting of Mn , Re and mixtures thereof , all based upon the total weight of the catalyst composition , where all the metals are impregnated in form of their chlorides or other water soluble salts on a fluidizable support with a BET surface of from about 80 up to about 220 m/g.2. The catalyst composition according to wherein the catalytically active metal composition comprises from about 3% to about 6% by weight of copper claim 1 , zero to about 0.4 moles/kg of alkali metal(s) claim 1 , from about 0.2% to about 0.75 moles/kg of alkaline earth metal(s) claim 1 , and from about 0.09 up to about 0.4 moles/kg of transition metal(s).3. The catalyst composition of wherein the support is an alumina support.4. The catalyst composition of wherein the alkali metal is at least one metal selected from the group consisting of potassium ...

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Номер записи: 39
26-02-2015 дата публикации

CATALYTIC SURFACES AND COATINGS FOR THE MANUFACTURE OF PETROCHEMICALS

Номер: US20150057148A1
Автор: Chen Yan, Deuis Robert Leslie, Kong Fuwing, Petrone Sabino Steven Anthony
Принадлежит:

This disclosure describes a coating composition comprising: MnO, MnCrO, or combinations thereof in a first region of a coating having a first thickness, wherein x and y are integers between 1 and 7; and XW(Si, C) in a second region of the coating having a second thickness, wherein X is Ni or a mixture of Ni and one or more transition metals and z ranges from 0 to 1. 1. A coating composition comprising:a manganese oxide, a chromium-manganese oxide, or a combination[[s]] thereof in a first region of a coating having a first thickness; and{'sub': 6', '6', 'z', '1-z, 'XW(Si, C) in a second region of the coating having a second thickness, wherein X is Ni or a mixture of Ni and one or more transition metals and z ranges from 0 to 1.'}2. The coating composition of claim 1 , wherein the second region has an overall composition comprising Ni in a range of 10-45 wt % claim 1 , Mn in a range of 1.5-12 wt % claim 1 , Fe in a range of 2-10 wt % claim 1 , Si and/or C in a range of 5-10 wt % claim 1 , Win a range of 35-80 wt % claim 1 , and Cr in a range of 0.5-5 wt % claim 1 , Nb in a range of 0-2 wt % claim 1 , and Ti in a range of 0-2 wt %.3. (canceled)4. The coating composition of claim 3 , wherein the first thickness is 1-10 microns.5. (canceled)6. The coating composition of claim 5 , wherein the second thickness is 200-500 microns.7. The coating composition of claim 1 , wherein the transition metal comprises Fe claim 1 , Nb claim 1 , Cr claim 1 , Mn claim 1 , Ti claim 1 , Mo claim 1 , W claim 1 , and combinations thereof.8. (canceled)9. (canceled)10. (canceled)11. The coating composition of claim 1 , wherein the coating further comprises CaWO claim 1 , BaYWO claim 1 , or combinations thereof.12. (canceled)13. (canceled)14. (canceled)15. A substrate coated with the coating composition of .16. (canceled)17. (canceled)18. (canceled)19. (canceled)20. (canceled)21. A coating composition claim 1 , comprising Ni in a range of 10-45 wt % claim 1 , Mn in a range of 1.5-12 wt % claim ...

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Номер записи: 40
10-03-2022 дата публикации

BIMETAL OXIDE CATALYST AND METHODS

Номер: US20220073481A1
Автор: LIN Lu, Liu Huai, Sun Yong, TANG Xing, Zeng Xianhai
Принадлежит:

Bimetal oxide catalyst and methods, a method comprises: mixing and grinding to obtain a mixture comprising a manganese salt (a), at least one of other metal salt (b), and an additive (c), wherein the other metal salt comprises at least one of a copper salt, a cobalt salt, a cerium salt, an iron salt, or a nickel salt, and the additive comprises at least one of polyol or organic acid, and calcining the mixture to obtain the bimetal oxide catalyst. 1. A method for preparing a bimetal oxide catalyst , comprising:mixing and grinding a manganese salt (a), other metal salt (b), and an additive (c) to obtain a mixture, wherein the other metal salt (b) comprises at least one of a copper salt, a cobalt salt, a cerium salt, an iron salt, or a nickel salt, and the additive (c) comprises at least one of polyol or organic acid, andcalcining the mixture to obtain the bimetal oxide catalyst.2. The method according to claim 1 , wherein the manganese salt (a) comprises at least one of manganese nitrate claim 1 , manganese acetate claim 1 , or manganese oxalate.3. The method according to claim 1 , wherein:the copper salt comprises at least one of copper nitrate, copper acetate, or copper oxalate,the cobalt salt comprises at least one of cobalt nitrate, cobalt acetate, or cobalt oxalate,the cerium salt comprises at least one of cerium nitrate, cerium acetate, or cerium oxalate,the iron salt comprises at least one of iron nitrate, iron acetate, or iron oxalate, andthe nickel salt comprises at least one of nickel nitrate, nickel acetate, or nickel oxalate.4. The method according to claim 1 , wherein:the polyol comprises at least one of vitamin C, citric acid, or malic acid, andthe organic acid comprises at least one of fructose, glucose, or xylose.5. The method according to claim 1 , wherein:calcining the mixture comprises calcining the mixture at 160-240° C. for 0.5-5 hours to obtain the bimetal oxide catalyst, anda molar ratio of a to b is 1:(0.1-2), and a molar ratio of c to a sum of ...

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Номер записи: 41
28-02-2019 дата публикации

SUPPORTED MULTIMETALLIC CATALYSTS FOR OXIDATIVE DEHYDROGENATION OF ALKANES

Номер: US20190060875A1
Автор: Bunquin Jeffrey C., Ferrandon Magali S.
Принадлежит:

A catalyst for oxidative dehydrogenation of alkanes includes a substrate including an oxide; at least one promoter including a transition metal or a main group element of the periodic table; and an oxidation-active transition metal. The catalyst is multimetallic. 1. A catalyst for oxidative dehydrogenation of alkanes , the catalyst comprising:a substrate comprising an oxide;at least one promoter comprising a transition metal or a main group element of the periodic table; andan oxidation-active transition metal,wherein the catalyst is multimetallic.2. The catalyst of claim 1 , wherein the oxidation-active transition metal comprises manganese claim 1 , nickel or vanadium.3. The catalyst of claim 1 , wherein the substrate is selected from the group consisting of SiO claim 1 , AlO claim 1 , TiO claim 1 , and ZrO.4. The catalyst of claim 1 , wherein the at least one promoter comprises a Lewis acidic and redox-active promoter.5. The catalyst of claim 1 , wherein the at least one promoter comprises an oxide layer of the transition metal or the main group element of the periodic table having a general formula of MO claim 1 , where M is the transition metal or the main group metal of the periodic table.6. The catalyst of claim 1 , wherein the at least one promoter is selected from the group consisting of Zn claim 1 , Fe claim 1 , Ga claim 1 , Cr claim 1 , Zr claim 1 , Ni claim 1 , and V.7. The catalyst of claim 1 , wherein the catalyst is doped with an element selected from the Group I elements of the periodic table claim 1 , the Group II elements of the periodic table claim 1 , or the main group elements of the periodic table.8. A method of producing an alkene comprising:providing an alkane; and{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'performing oxidative dehydrogenation on the alkane in the presence of an oxidant and the catalyst of to yield an alkene.'}9. The method of claim 8 , wherein the alkane and the oxidant are present in a 1:1 ratio.10. A method of ...

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Номер записи: 42
17-03-2022 дата публикации

ZIRCONIA-BASED AQUEOUS NP-DISPERSION FOR USE IN COATING FILTER SUBSTRATES

Номер: US20220080393A1
Автор: Harris Deborah Jayne, SCAPENS David Alastair
Принадлежит:

This invention relates to an aqueous dispersion of particles, the dispersion having a particle content of 10-70 wt %, and the particles comprising, on an oxide basis: (a) 10-98 wt % in total of ZrO+HfO, and (b) 2-90 wt % in total of AIO, CeO, LaO, NdO, PrO, YO, or a transition metal oxide, wherein the dispersion has a Z-average particle size of 100-350 nm and the particles have a crystallite size of 1-9 nm. The invention also relates to a substrate coated with the aqueous dispersion of particles. 2. The aqueous dispersion of particles as claimed in claim 1 , wherein the particles comprise claim 1 , on an oxide basis:{'sub': ['2', '2'], '#text': '(a) 10-98 wt % in total of ZrO+HfO,'}{'sub': '2', '#text': '(b) 2-90 wt % CeO,'}{'sub': ['2', '3', '2', '3', '6', '11', '2', '3'], '#text': '(c) 0-30 wt % in total of LaO, NdO, PrO, YO, or a transition metal oxide, and'}{'sub': ['2', '3'], '#text': '(d) 0-88 wt % AlO.'}3. The aqueous dispersion of particles as claimed in claim 1 , wherein the particles comprise claim 1 , on an oxide basis claim 1 , 25-80 wt % in total of ZrOand HfO.4. The aqueous dispersion of particles as claimed in claim 1 , wherein the zirconia-ceria particles comprise claim 1 , on an oxide basis claim 1 , 10-80 wt % CeO.5. The aqueous dispersion of particles as claimed in claim 1 , wherein the zirconia-ceria particles comprise claim 1 , on an oxide basis claim 1 , 0-25 wt % in total of LaO claim 1 , NdO claim 1 , PrO claim 1 , YO claim 1 , and transition metal oxides.6. The aqueous dispersion of particles as claimed in claim 1 , wherein the dispersion has a particle content of 10-45 wt %.7. The aqueous dispersion of particles as claimed in claim 1 , wherein the dispersion additionally comprises particles comprising claim 1 , on an oxide basis claim 1 , at least 50 wt % AlO.8. The aqueous dispersion of particles as claimed in claim 1 , wherein the dispersion has a polydispersity index of 0.15-0.35.9. The aqueous dispersion of particles as claimed in claim ...

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Номер записи: 43
27-02-2020 дата публикации

Manganese-Cobalt Spinel Oxide Nanowire Arrays

Номер: US20200061591A1
Автор: Gao Pu-Xian, Tang Wenxiang
Принадлежит:

Manganese-cobalt (Mn—Co) spinel oxide nanowire arrays are synthesized at low pressure and low temperature by a hydrothermal method. The method can include contacting a substrate with a solvent, such as water, that includes MnO4- and Co2 ions at a temperature from about 60° C. to about 120° C. The method preferably includes dissolving potassium permanganate (KMnO4) in the solvent to yield the MnO4— ions. the substrate is The nanoarrays are useful for reducing a concentration of an impurity, such as a hydrocarbon, in a gas, such as an emission source. The resulting material with high surface area and high materials utilization efficiency can be directly used for environment and energy applications including emission control systems, air/water purifying systems and lithium-ion batteries. 1. A method of making a manganese-cobalt (Mn—Co) spinel oxide nanoarray on a substrate , comprising:{'sub': '4', 'sup': −', '2+, 'contacting a substrate with a solvent comprising MnOand Coions at a temperature from about 60° C. to about 120° C.'}2. The method of claim 1 , further comprising dissolving potassium permanganate (KMnO) in the solvent to yield the MnOions.3. The method of claim 1 , further comprising dissolving cobalt nitrate in the solvent to yield the Coions.4. The method of claim 3 , wherein the cobalt nitrate is cobalt nitrate hexahydrate (CO(NO)⋅6HO).5. The method of claim 1 , wherein the solvent is water.6. The method of claim 1 , further comprising varying the concentration of MnOor Coions in the solvent to control deposition rate of the manganese-cobalt spinel oxide nanoarray.7. The method of claim 1 , further comprising controlling the temperature of the solvent to control deposition rate of the manganese-cobalt spinel oxide nanoarray.8. The method of claim 1 , wherein the substrate has a honeycomb structure.9. The method of claim 1 , wherein the substrate is a cordierite honeycomb.10. The method of claim 1 , further comprising contacting a substrate with a solvent ...

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Номер записи: 44
09-03-2017 дата публикации

METHOD FOR PRODUCING MENTHONES FROM ISOPULEGOL IN THE GAS PHASE

Номер: US20170066705A1
Автор: DEHN Martine, Hickmann Volker, Keller Andreas, RENZ Stephanie, Rüdenauer Stefan, Schneider Daniel
Принадлежит:

The present invention relates to a process for reacting isopulegol to menthone in the gas phase and to the use of the reaction products thus prepared as additives in foods, cosmetics, pharmaceutical products, tobacco formulations, household products, and laundry care products. 1. A process for making menthone comprising contacting a carrier gas that includes isopulegol in the gas phase with an activated oxidic copper catalyst , the copper catalyst optionally comprising at least one element selected from aluminum , manganese , barium , chromium , calcium , or iron , and optionally isolating a menthone-containing reaction product.2. The process according to claim 1 , in which the copper catalyst is activated with hydrogen claim 1 , or with hydrogen and an alcohol.4. The process according to claim 1 , in which the reaction is carried out at a temperature of 150-250° C.5. The process according to claim 1 , in which the copper catalyst comprises copper and at least one further element selected from aluminum claim 1 , manganese claim 1 , barium claim 1 , chromium claim 1 , calcium claim 1 , and iron in elemental form and/or as oxides claim 1 , and the oxides are present as single-element oxides claim 1 , double oxides and/or multiple oxides.6. (canceled)7. The process according to claim 1 , in which the copper catalyst has a fraction of at least 20% up to 100 wt % of copper compound claim 1 , based on the dry mass of the catalyst.8. The process according to claim 1 , in which the copper catalyst comprises one of the following catalyst compositions:a) 30-40% copper oxide, 10-25% aluminum oxide, 10-25% manganese oxide, and 30-40% aluminum copper oxide,b) 30-45% copper oxide, 10-25% aluminum oxide, 10-20% manganese oxide, and 30-40% aluminum copper oxide,{'sub': 2', '4, 'c) 60.0-65.0% chromium copper oxide (CrCuO), 20.0-25.0% copper oxide, 5.0-10.0% barium oxide, 1.0-5.0% graphite, 1.0% dichromium trioxide, and 1.0% chromium trioxide,'}{'sub': 2', '4, 'd) 60.0-70.0% chromium ...

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Номер записи: 45
11-03-2021 дата публикации

Multistage Nanoreactor Catalyst and Preparation and Application Thereof

Номер: US20210070672A1
Автор: Jiang Feng, LIU Bing, Liu Dapeng, LIU Xiaohao, Wang Ting, XU Yuebing
Принадлежит:

The present disclosure discloses a multistage nanoreactor catalyst and preparation and application thereof, belonging to the technical field of synthesis gas conversion. The catalyst consists of a core of an iron-based Fischer-Tropsch catalyst, a transition layer of a porous oxide or porous carbon material, and a shell layer of a molecular sieve having an aromatization function. The molecular sieve of the shell layer can be further modified by a metal element or a non-metal element, and the outer surface of the molecular sieve is further modified by a silicon-oxygen compound to adjust the acidic site on the outer surface and the aperture of the molecular sieve, thereby inhibiting the formation of heavy aromatic hydrocarbons. According to the disclosure, the shell layer molecular sieve with a transition layer and a shell layer containing or not containing auxiliaries, and with or without surface modification can be prepared by the iron-based Fischer-Tropsch catalyst through multiple steps. The catalyst can be used for direct preparation of aromatic compounds, especially light aromatic compounds, from synthesis gas; the selectivity of light aromatic hydrocarbons in hydrocarbons can be 75% or above, and the content in the liquid phase product is not less than 95%; and the catalyst has good stability and good industrial application prospect. 1. A multistage nanoreactor catalyst , comprising a structure of a core , a shell body and a core-shell transition layer; wherein the core layer is an iron-based catalyst having Fischer-Tropsch activity , weight of the core layer being 0.1% to 80% of total weight of the catalyst; wherein the shell body is a molecular sieve , the weight of the shell body being 0.1% to 80% of the total weight of the catalyst; and wherein the core-shell transition layer is a porous oxide or porous carbon material , the weight of the transition layer being 0.01% to 35% of the total weight of the catalyst.2. The multistage nanoreactor catalyst according ...

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Номер записи: 46
29-05-2014 дата публикации

LAYERED COMPLEX OXIDE, OXIDATION CATALYST, AND DIESEL PARTICULATE FILTER

Номер: US20140147341A1
Автор: MASUDA Kohji, Munakata Fumio
Принадлежит: NISSAN MOTOR CO., LTD.

A layered composite oxide is provided which is excellent in oxygen ion conductivity and, is capable of effectively decreasing a PM oxidation temperature without using a noble metal such as platinum or the like. The layered composite oxide is used in an oxidation catalyst, DPF, a ternary catalyst, and a NOx purification catalyst. The layered composite oxide has a composition represented by the following formula (1), LaSrMnBO. . . (1) (wherein B represents Cu and/or Fe, and y satisfies 0 Подробнее

Номер записи: 47
05-03-2020 дата публикации

SPINEL SUPPORTED METAL CATALYST FOR STEAM REFORMING

Номер: US20200070139A1
Автор: IRVINE John T. S., NEAGU Dragos, STEFAN Elena, UMAR Ahmed
Принадлежит:

The invention relates to a catalyst useful in the steam reforming of hydrocarbons and oxygenated hydrocarbons. The invention provides a method for preparing a catalyst comprising heating a spinel of formula ANiFeCrOwhere A is Mn or Mg and x is from 0 to 0.75 under reducing conditions at a temperature of from 800 to 1500° C., and catalysts obtainable by said method. 18-. (canceled)9. A method for preparing a catalyst comprising heating a spinel of formula ANiFeCrOwhere A is Mn or Mg and x is from >0 to 0.75 under reducing conditions at a temperature of from 800 to 1500° C. so as to cause a restructuring of the spinel to form a catalyst comprising a porous spinel phase supporting metal particles of Ni , Fe , mixtures thereof and/or alloys thereof.101. The method according to claim , wherein the spinel of formula ANiFeCrOis single phase.111. The method according to claim , wherein when A is Mn , x is less than or equal to 0.55.121. The method according to claim , wherein the metal particles have a particle size of 10 nm to 5 μm.131. A catalyst obtainable by the method of claim .14. A method of steam reforming a hydrocarbon or an oxygenated hydrocarbon comprising contacting said hydrocarbon or oxygenated hydrocarbon with steam and the catalyst according to .15. A method according to claim 14 , wherein said oxygenated hydrocarbon is steam reformed.16. A method according to claim 14 , wherein said oxygenated hydrocarbon is glycerol. The invention relates to a catalyst for the steam reforming of hydrocarbons and oxygenated hydrocarbons. The catalyst comprises Fe/Ni supported on a porous spinel lattice. In particular, the invention relates to a method for preparing said catalyst and a method of steam reforming hydrocarbons or oxygenated hydrocarbons using said catalyst.The steam reforming of natural gas (methane) is the most common method of producing commercial bulk hydrogen. There is interest in producing hydrogen from methane and other hydrocarbons for use in fuel cells. ...

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Номер записи: 48
24-03-2016 дата публикации

Systems and Methods for Zero-PGM Binary Catalyst Having Cu, Mn, and Fe For TWC Applications

Номер: US20160082422A1
Автор: Golden Stephen J., Nazarpoor Zahra
Принадлежит: Clean Diesel Technologies, Inc.

Variations of bulk powder catalyst material including Cu—Mn, Cu—Fe, and Fe—Mn spinel systems for ZPGM TWC applications are disclosed. The disclosed bulk powder catalyst samples include stoichiometric and non-stoichiometric Cu—Mn, Cu—Fe, and Fe—Mn spinels on PrO—ZrOsupport oxide, prepared using incipient wetness method. Activity measurements under isothermal steady state sweep test condition may be performed under rich to lean condition. Catalytic activity of samples may be compared to analyze the influence that different binary spinel system bulk powders may have on TWC performance of ZPGM materials for a plurality of TWC applications. Stoichiometric Cu—Mn, Cu—Fe, and Fe—Mn spinel systems exhibit higher catalytic activity than non-stoichiometric Cu—Mn, Cu—Fe, and Fe—Mn spinel systems. The influence of prepared Cu—Mn, Cu—Fe, and Fe—Mn spinel systems may lead into cost effective manufacturing solutions for ZPGM TWC systems. 1. A catalytic system , comprising:{'sub': X', '3-X', '4, 'a catalyst having the general formula ABO, wherein X may be less than or equal to 1.5 and wherein A and B are selected from the group consisting of Cu, Mn, and Fe; and'}wherein the catalyst is substantially free of platinum group metals.2. The catalytic system of claim 1 , wherein the catalyst is in spinel form.3. The catalytic system of claim 1 , wherein the catalyst has the general formula CuMnOwhere 1.0≦X≦1.5.4. The catalytic system of claim 1 , wherein the catalyst has the general formula CuFeOwhere 0.5≦X≦1.0.5. A catalytic system claim 1 , comprising a catalyst having the general formula ABO claim 1 , wherein A and B are selected from the group consisting of Cu claim 1 , Mn claim 1 , and Fe.6. The catalytic system of claim 5 , wherein the catalyst is in spinel form.7. The catalytic system of claim 5 , wherein the catalyst has the general formula CuMnOwhere 1.0≦X≦1.5.8. The catalytic system of claim 5 , wherein the catalyst has the general formula CuFeOwhere 0.5≦X≦1.0. This application ...

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Номер записи: 49
31-03-2022 дата публикации

COBALT CATALYSTS AND PRECURSORS THEREFOR

Номер: US20220097029A1
Автор: MERCER Richard John
Принадлежит:

A cobalt catalyst precursor is described comprising cobalt oxide crystallites disposed within pores of a titania support, wherein the cobalt oxide crystallites have an average size as determined by XRD in the range 6 to 18 nm, and the titania support is a spherical titania support with a particle size in the range 100 to 1000 μm, wherein the catalyst precursor has a pore volume of 0.2 to 0.6 cm/g and an average pore diameter in the range 30 to 60 nm, and wherein the catalyst precursor has a ratio of the average cobalt oxide crystallite size to the average pore diameter in the range 0.1:1 to 0.6:1. The catalyst precursor may be reduced to provide catalysts suitable for use in Fisher-Tropsch reactions. 1. A cobalt catalyst precursor comprising cobalt oxide crystallites disposed within pores of a titania support , wherein the cobalt oxide crystallites have an average size as determined by XRD in the range 6 to 18 nm , and the titania support is a spherical titania support with a particle size in the range 100 to 1000 μm , wherein the catalyst precursor has a pore volume of 0.2 to 0.6 cm/g and an average pore diameter in the range 30 to 60 nm , and wherein the catalyst precursor has a ratio of the average cobalt oxide crystallite size to the average pore diameter in the range 0.1:1 to 0.6:1.2. The cobalt catalyst precursor according to wherein the cobalt oxide crystallites have an average size in the range 7-16 nm.3. The cobalt catalyst precursor according to wherein the particle size of the catalyst precursor is in the range 300-800 μm.4. The cobalt catalyst precursor according to wherein the volume-median diameter claim 1 , D[v claim 1 ,0.5] claim 1 , of the catalyst precursor is in the range 300-500 μm.5. The cobalt catalyst precursor according to wherein the sulphur content of the catalyst precursor is <30 ppmw claim 1 , the alkali metal content of the catalyst precursor is <50 ppmw claim 1 , and the chloride content of the catalyst precursor is <1500 ppmw.6. The ...

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Номер записи: 50
02-04-2015 дата публикации

Carbon Nanotubes and Method for Preparing the Same

Номер: US20150093576A1
Автор: AHN Sung Hee, BAE Seung Yong, Kim Byeong Yeol, KIM Joong In, Lee Yun Tack
Принадлежит:

Disclosed herein are carbon nanotubes and a method of manufacturing the same. The carbon nanotubes include at least one element selected from aluminum (Al), magnesium (Mg) and silicon (Si) and at least one metal selected from cobalt (Co), nickel (Ni), iron (Fe), manganese (Mn) and molybdenum (Mo), and have an intensity ratio 1. Carbon nanotubes comprising: at least one element selected from aluminum (Al) , magnesium (Mg) and silicon (Si); and at least one metal selected from cobalt (Co) , nickel (Ni) , iron (Fe) , manganese (Mn) and molybdenum (Mo) , the carbon nanotubes having an intensity ratio (ID/IG) of about 1.10 or less as measured by Raman spectroscopy and a carbon purity of about 98% or higher.2. The carbon nanotubes according to claim 1 , wherein the carbon nanotubes comprise about 20 ppm to about 2 claim 1 ,000 ppm of aluminum (Al) claim 1 , magnesium (Mg) and/or silicon (Si) claim 1 , about 40 ppm to about 9 claim 1 ,000 ppm of cobalt (Co) claim 1 , and about 40 ppm to about 9 claim 1 ,000 ppm of manganese (Mn).3. The carbon nanotubes according to claim 1 , wherein the carbon nanotubes have an average particle diameter from about 10 nm to about 35 nm.4. The carbon nanotubes according to claim 1 , wherein the carbon nanotubes have a carbon purity of about 98.5% to about 99.9%.5. A supported catalyst for preparing carbon nanotubes claim 1 , comprising: at least one metal catalyst selected from the group consisting of Co claim 1 , Ni claim 1 , Fe claim 1 , Mn and Mo; and at least one support material selected from the group consisting of aluminum oxide claim 1 , magnesium oxide and silica claim 1 , the supported catalyst being a hollow type.6. The supported catalyst according to claim 5 , wherein the supported catalyst has an average particle diameter of about 10 μm to about 500 μm.7. The supported catalyst according to claim 5 , wherein the supported catalyst has a mole ratio as follows:Al, Mg or Si:Co:Mn=1:x:y, wherein about 0.8≦x≦4.0 and about 0.1≦y≦8.0.8 ...

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Номер записи: 51
05-04-2018 дата публикации

METHODS FOR CONVERSION OF CO2 INTO SYNGAS

Номер: US20180093888A1
Автор: MAMEDOV Aghaddin, Rea Clark, SHAIKH Shahid
Принадлежит:

Methods of preparing syngas are provided. An exemplary method can include hydrogenation of carbon dioxide (CO) via a reverse water gas shift (RWGS) reaction. Catalysts that include Cu and/or Mn can be used, and the RWGS reaction can be conducted at a temperature greater than 600° C. The syngas produced from hydrogenation of COcan be used to generate light olefins via a Fischer-Tropsch synthesis (FT) reaction. 1. A method of preparing syngas , comprising:a. providing a reaction chamber that comprises a solid-supported catalyst comprising Cu and Mn;{'sub': 2', '2, 'b. feeding a reaction mixture comprising Hand COto the reaction chamber; and'}{'sub': 2', '2', '2, 'c. contacting Hand COwith the catalyst at a reaction temperature greater than 600° C. to provide a product mixture that comprises Hand CO.'}2. The method of claim 1 , wherein the catalyst comprises Cu and Mn in a molar ratio of about 4:1 to about 1:4.3. The method of claim 2 , wherein the catalyst comprises Cu and Mn in a molar ratio of about 1:1.4. The method of claim 1 , wherein the catalyst comprises one or more solid supports selected from the group consisting of AlO claim 1 , MgO claim 1 , SiO claim 1 , TiOand ZrO.5. The method of claim 1 , wherein the catalyst comprises one or more additional metals selected from the group consisting of La claim 1 , Ca claim 1 , K claim 1 , W and Al.6. The method of claim 5 , wherein the catalyst comprises Al.7. The method of claim 6 , wherein the catalyst comprises about 10% Cu and about 10% Mn claim 6 , by weight.8. The method of claim 1 , wherein the catalyst does not comprise Cr.9. The method of claim 1 , wherein the catalyst comprises less than about 1% Cr claim 1 , by weight.10. The method of claim 9 , wherein the catalyst comprises less than about 0.1% Cr claim 9 , by weight.11. The method of claim 10 , wherein the catalyst comprises less than about 0.01% Cr claim 10 , by weight.12. The method of claim 1 , wherein the reaction mixture comprises Hand COin a molar ...

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Номер записи: 52
28-03-2019 дата публикации

Multistage Nanoreactor Catalyst and Preparation and Application Thereof

Номер: US20190092705A1
Автор: Jiang Feng, LIU Bing, Liu Dapeng, LIU Xiaohao, Wang Ting, XU Yuebing
Принадлежит:

The present disclosure discloses a multistage nanoreactor catalyst and preparation and application thereof, belonging to the technical field of synthesis gas conversion. The catalyst consists of a core of an iron-based Fischer-Tropsch catalyst, a transition layer of a porous oxide or porous carbon material, and a shell layer of a molecular sieve having an aromatization function. The molecular sieve of the shell layer can be further modified by a metal element or a non-metal element, and the outer surface of the molecular sieve is further modified by a silicon-oxygen compound to adjust the acidic site on the outer surface and the aperture of the molecular sieve, thereby inhibiting the formation of heavy aromatic hydrocarbons. According to the disclosure, the shell layer molecular sieve with a transition layer and a shell layer containing or not containing auxiliaries, and with or without surface modification can be prepared by the iron-based Fischer-Tropsch catalyst through multiple steps. The catalyst can be used for direct preparation of aromatic compounds, especially light aromatic compounds, from synthesis gas; the selectivity of light aromatic hydrocarbons in hydrocarbons can be 75% or above, and the content in the liquid phase product is not less than 95%; and the catalyst has good stability and good industrial application prospect. 1. A method for preparing a multistage nanoreactor catalyst , comprising the following steps:step 1, impregnating a prepared iron-based catalyst into an organic solvent containing a transition layer oxide precursor, continuously stirring for 0 to 24 h, then performing rotary evaporation to remove the organic solvent and drying at 30 to 250° C. for 0 to 24 h to obtain a sample;step 2, impregnating the sample prepared in step 1 into an alkaline solution containing a template, a silicon source and an aluminum source, and stirring for 0 to 24 h, wherein weight ratio of the sample, the template, the silicon source, the aluminum source, ...

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Номер записи: 53
06-04-2017 дата публикации

NO Oxidation Activity of Pseudo-brookite Compositions as Zero-PGM Catalysts for Diesel Oxidation Applications

Номер: US20170095794A1
Автор: Golden Stephen J., Nazarpoor Zahra
Принадлежит: Clean Diesel Technologies, Inc.

Zero-PGM (ZPGM) catalyst materials including pseudo-brookite compositions for use in diesel oxidation catalyst (DOC) applications are disclosed. The disclosed doped pseudo-brookite compositions include A-site partially doped pseudo-brookite compositions, such as, Sr-doped and Ce-doped pseudo-brookite compositions, as well as B-site partially doped pseudo-brookite compositions, such as, Fe-doped, Co-doped, Ni-doped, and Ti-doped pseudo-brookite compositions. The disclosed doped pseudo-brookite compositions, including calcination at various temperatures, are subjected to a DOC standard light-off (LO) test methodology to assess/verify catalyst activity as well as to determine the effect of the use of a dopant in an A-site cation or a B-site cation within a pseudo-brookite composition. The disclosed doped pseudo-brookite compositions exhibit higher NO oxidation catalyst activities when compared to bulk powder pseudo-brookite, thereby indicating improved thermal stability and catalyst activity when using a dopant in an A-site cation or in a B-site cation within a pseudo-brookite composition. 1. A catalyst composition comprising a pseudo-brookite structured compound of general formula YAMnBO , wherein the pseudo-brookite structured compound includes yttrium and manganese , wherein at least one selected from the group consisting of x and y is greater than 0 , and wherein A and B are cations selected from the group consisting of cerium (Ce) , strontium (Sr) , iron (Fe) , cobalt (Co) , nickel (Ni) , and titanium (Ti).2. The catalyst composition of claim 1 , wherein A is a cation selected from the group consisting of Ce and Sr claim 1 , and wherein x is about 0.01 to about 0.5.3. The catalyst composition of claim 2 , wherein x is about 0.1.4. The catalyst composition of claim 2 , wherein A is Ce.5. The catalyst composition of claim 2 , wherein A is Sr.6. The catalyst composition of claim 2 , wherein the catalyst composition is calcined at a temperature from about 800° C. to ...

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Номер записи: 54
06-04-2017 дата публикации

Thermally Stable Zero-PGM Three Way Catalyst with High Oxygen Storage Capacity

Номер: US20170095801A1
Автор: Stephen J. Golden, Zahra Nazarpoor
Принадлежит: Clean Diesel Technologies Inc

The present disclosure describes ZPGM catalyst material compositions having significantly high oxygen storage capacity for a plurality of TWC applications. The disclosed ZPGM catalyst material compositions include a Cu—Mn spinel deposited on doped Zirconia support oxide. The disclosed ZPGM catalyst material compositions exhibit significant high OSC stability properties after fuel cut aging. The improved thermal stability and OSC properties of the disclosed ZPGM catalyst material compositions are determined by performing a standard isothermal oscillating OSC tests. Fresh and aged ZPGM catalyst material compositions are employed within the standard isothermal oscillating OSC test, over multiple reducing/oxidizing cycles at a temperature of about 575° C.

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Номер записи: 55
06-04-2017 дата публикации

Stability of Doped-Zirconia as Support Oxide for Copper-Manganese Zero-PGM Catalysts

Номер: US20170095802A1
Автор: Golden Stephen J., Nazarpoor Zahra
Принадлежит: Clean Diesel Technologies, Inc.

The present disclosure describes bulk powder Zero-PGM material compositions including a CuMnOspinel structure supported on doped zirconia support oxides powders, including Ba, Sr, and Ti at different dopant loadings produced by different conventional synthetic methods. BET-surface area and XRD analysis are performed for a plurality of doped zirconia support oxides to compare the thermal stability, before and after deposition of Cu—Mn spinel. Additionally, bulk powder ZPGM catalyst compositions are subjected to a steady-state isothermal sweep test to determine NO conversion capabilities. The selected support oxide material compositions are capable of providing increased surface areas for improved thermal stability leading to a more effective utilization of ZPGM catalyst materials with enhanced NO conversion and improved thermal stability for TWC applications. 1. A support oxide for a catalytic composition , comprising a zirconia doped by at least one selected from the group consisting of Ba , Sr , and Ti.2. The support oxide of claim 1 , wherein the zirconia is doped by Ba to form a BaO—ZrOsupport oxide.3. The support oxide of claim 2 , wherein the BaO—ZrOsupport oxide comprises about 0.5% to about 50% by weight BaO.4. The support oxide of claim 3 , wherein the BaO—ZrOsupport oxide comprises about 5% to about 10% by weight BaO.5. The support oxide of claim 3 , wherein the BaO—ZrOsupport oxide comprises about 5% by weight BaO.6. The support oxide of claim 1 , wherein the zirconia is doped by Sr to form a SrO—ZrOsupport oxide.7. The support oxide of claim 6 , wherein the SrO—ZrOsupport oxide comprises about 0.5% to about 50% by weight SrO.8. The support oxide of claim 7 , wherein the SrO—ZrOsupport oxide comprises about 5% to about 10% by weight SrO.9. The support oxide of claim 7 , wherein the SrO—ZrOsupport oxide comprises about 5% by weight SrO.10. The support oxide of claim 7 , wherein the SrO—ZrOsupport oxide comprises about 10% by weight SrO.11. A catalytic ...

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Номер записи: 56
16-04-2015 дата публикации

Influence of Base Metal Loadings on TWC Performance of ZPGM Catalysts

Номер: US20150105242A1
Автор: Stephen J. Golden, Zahra Nazarpoor
Принадлежит: Clean Diesel Technologies Inc

Influence of a plurality of base metal loadings on TWC performance of ZPGM catalysts for TWC applications is disclosed. ZPGM catalyst samples are prepared and configured with washcoat on ceramic substrate, overcoat including doped Zirconia support oxide, and impregnation layer of Cu—Mn spinel with different base metal loadings. Testing of ZPGM catalyst samples including variations of base metal loadings is developed under isothermal steady state sweep test condition to evaluate the influence of variations of base metal loadings on TWC performance in NO X conversion. As a result of increasing Cu—Mn base metal loadings, improvements of lean NO X conversion and oxygen storage capacity may be realized at higher base metal loading ratios. The ZPGM catalyst samples exhibiting higher NO X conversion and OSC are compared with commercial PGM catalyst samples under lean condition. OSC isothermal oscillating tests are carried out to confirm the increase in OSC property of samples, as well as TWC performance, both correlated to increasing base metal loadings that may further improve TWC performance.

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Номер записи: 57
16-04-2015 дата публикации

Systems and Methods for Zero-PGM Binary Catalyst Having Cu, Mn, and Fe for TWC Applications

Номер: US20150105243A1
Автор: Golden Stephen J., Nazarpoor Zahra
Принадлежит: Clean Diesel Technologies, Inc.

Variations of bulk powder catalyst material including Cu—Mn, Cu—Fe, and Fe—Mn spinel systems for ZPGM TWC applications are disclosed. The disclosed bulk powder catalyst samples include stoichiometric and non-stoichiometric Cu—Mn, Cu—Fe, and Fe—Mn spinels on PrO—ZrOsupport oxide, prepared using incipient wetness method. Activity measurements under isothermal steady state sweep test condition may be performed under rich to lean condition. Catalytic activity of samples may be compared to analyze the influence that different binary spinel system bulk powders may have on TWC performance of ZPGM materials for a plurality of TWC applications. Stoichiometric Cu—Mn, Cu—Fe, and Fe—Mn spinel systems exhibit higher catalytic activity than non-stoichiometric Cu—Mn, Cu—Fe, and Fe—Mn spinel systems. The influence of prepared Cu—Mn, Cu—Fe, and Fe—Mn spinel systems may lead into cost effective manufacturing solutions for ZPGM TWC systems. 1. A catalytic system , comprising:a substrate;a washcoat applied to said substrate; andan overcoat applied to said washcoat comprising at least one support oxide and at least two catalysts applied to the at least one support oxide;{'sub': X', '3-X', '4, 'wherein the at least two catalysts have the general formula ABO, wherein X may be less than or equal to 1.5 and wherein A and B are selected from the group consisting of Cu, Mn, and Fe; and'}wherein the at least two catalysts are substantially free of platinum group metals.2. The catalytic system of claim 1 , wherein at least one of the at least two catalysts are in spinel form.3. The catalytic system of claim 1 , wherein at least one of the at least two catalysts are stoichiometric.4. The catalytic system of claim 1 , wherein at least one of the at least two catalysts are non-stoichiometric.5. The catalytic system of claim 1 , wherein the at least one support oxide comprises doped Zirconia.6. The catalytic system of claim 1 , wherein the at least one support oxide comprises PrO—ZrO.7. The ...

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Номер записи: 58
16-04-2015 дата публикации

Zero-PGM Catalyst with Oxygen Storage Capacity for TWC Systems

Номер: US20150105245A1
Автор: Golden Stephen J., Nazarpoor Zahra
Принадлежит: CDTI

ZPGM-ZRE catalyst system substantially free from platinum group (PGM) and rare earth (RE) metals for TWC application is disclosed. Disclosed ZPGM-ZRE catalyst system may include pure alumina as washcoat and a Cu—Mn stoichiometric spinel with NbO—ZrOsupport oxide, as ZPGM-ZRE catalyst in overcoat. Disclosed ZPGM-ZRE catalyst systems are found to have high thermal stability, catalyst activity, and high oxygen storage capacity compared to commercial PGM catalyst system that includes Ce-based oxygen storage material (OSM). 1. A catalyst system , comprising:a substrate;a washcoat;an overcoat comprising at least one oxygen storage material is substantially free of platinum group metals and rare earth metals; andwherein the at least one oxygen storage material comprises Cu—Mn spinel having a niobium-zirconia support oxide; and{'sub': 2', '3, 'wherein the washcoat comprises AlO.'}2. The catalyst system of claim 1 , wherein the Cu—Mn spinel comprises CuMnO.3. The catalyst system of claim 1 , wherein the niobium-zirconia support oxide comprises NbO—ZrO.4. The catalyst system of claim 1 , wherein the at least one oxygen storage material is calcined at about 600° C.5. The catalyst system of claim 1 , wherein the calcination is for about 5 hours.6. The catalyst system of claim 1 , wherein the niobium-zirconia support oxide comprises about 15% to about 30% by weight of NbO.7. The catalyst system of claim 1 , wherein the niobium-zirconia support oxide comprises about 25% by weight of NbO.8. The catalyst system of claim 1 , wherein the niobium-zirconia support oxide comprises about 70% to about 85% by weight of ZrO.9. The catalyst system of claim 1 , wherein the niobium-zirconia support oxide comprises about 75% by weight of ZrO.10. The catalyst system of claim 1 , wherein the at least one oxygen storage material is deposited on the substrate at about 120 g/L.11. The catalyst system of claim 1 , wherein the Cu—Mn spinel comprises about 10 g/L to about 15 g/L of Cu.12. The catalyst ...

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Номер записи: 59
16-04-2015 дата публикации

Thermally Stable Compositions of OSM Free of Rare Earth Metals

Номер: US20150105246A1
Автор: Golden Stephen J., Nazarpoor Zahra
Принадлежит:

The effect of aging temperature on oxygen storage materials (OSM) substantially free from platinum group (PGM) and rare earth (RE) metals is disclosed. Samples of ZPGM-ZRE metals OSM, hydrothermally aged at a plurality of high temperatures are found to have significantly high oxygen storage capacity (OSC) and phase stability than conventional PGM catalysts with Ce-based OSM. ZPGM-ZRE metals OSM includes a formulation of Cu—Mn stoichiometric spinel structure deposited on Nb—Zr oxide support and may be converted into powder to be used as OSM application or coated onto catalyst substrate. ZPGM-ZRE metals OSM, after aging condition, presents enhanced level of thermal stability and OSC property which shows improved catalytic activity than conventional PGM catalysts including Ce-based OSM. ZPGM-ZRE metals OSM may be suitable for a vast number of applications, and more particularly in underfloor catalyst systems. 1. A catalytic composition , comprising:an oxygen storage material, comprising Cu—Mn spinel.2. The catalytic composition of claim 1 , wherein the oxygen storage material is substantially free of platinum group metals.3. The catalytic composition of claim 1 , wherein the oxygen storage material is substantially free of rare earth metals metals.4. The catalytic composition of claim 1 , wherein the Cu—Mn spinel has a structure has the formula CuMnO.5. The catalytic composition of claim 1 , wherein the Cu—Mn spinel comprises about 10 g/L to about 15 g/L of Cu.6. The catalytic composition of claim 1 , wherein the Cu—Mn structure comprises about 20 g/L to about 25 g/L of Mn.7. A catalytic composition claim 1 , comprising:an oxygen storage material, comprising Cu—Mn spinel with Niobium-Zirconia support oxide.8. The catalytic composition of claim 7 , wherein the oxygen storage material is substantially free of platinum group metals.9. The catalytic composition of claim 7 , wherein the oxygen storage material is substantially free of rare earth metals metals.10. The ...

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Номер записи: 60
16-04-2015 дата публикации

Methods and Processes of Coating Zero-PGM Catalysts including with Cu, Mn, Fe for TWC Applications

Номер: US20150105247A1
Автор: Golden Stephen J., Nazarpoor Zahra
Принадлежит: Clean Diesel Technologies, Inc.

Variations of coating processes of Cu—Mn—Fe ZPGM catalyst materials for TWC applications are disclosed. The disclosed coating processes for Cu—Mn—Fe spinel materials are enabled in the preparation ZPGM catalyst samples according to a plurality of catalyst configurations, which may include an alumina only washcoat layer coated on a suitable ceramic substrate, and an overcoat layer with or without an impregnation layer, including Cu—Mn—Fe spinel and doped Zirconia support oxide, prepared according to variations of disclosed coating processes. Activity measurements are considered under variety of lean condition to rich condition to analyze the influence of disclosed coating processes on TWC performance of ZPGM catalysts for a plurality of TWC applications. Different coating processes may substantially increase thermal stability and TWC activity, providing improved levels of NOconversion that may lead to cost effective manufacturing solutions for ZPGM-TWC systems. 1. A process for making a catalytic system , comprising:providing a substrate;applying a washcoat to said substrate, wherein the substrate comprises alumina;{'sub': '2', 'applying an overcoat to said washcoat, said overcoat comprising at least one support oxide comprising doped ZrO;'}applying to said overcoat at least one layer of Cu—Mn spinel; andwherein the at least one catalyst is substantially free of platinum group metals; and{'sub': 2', '2', '5', '2, 'wherein the doped ZrOcomprises NbO-ZrO.'}2. The process of claim 1 , wherein the Cu—Mn spinel has a general formula of CuMnFeO claim 1 , where x less than 0.9 and greater than 0.1.3. The process of claim 2 , wherein x is 0.5.4. The process of ; wherein the conversion of NOis greater than 49%.5. The process of claim 1 , wherein the Cu—Mn spinel is impregnated.6. The process of ; wherein the conversion of NOis greater than 89%.5. The process of claim 1 , wherein the stability of the catalytic system has increased stability.6. The process of claim 1 , wherein ...

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Номер записи: 61
29-04-2021 дата публикации

MICROWAVE ACTIVE METAL OXIDES FOR CO2 DRY REFORMING OF METHANE

Номер: US20210122632A1
Автор: Kauffman Douglas R, Lekse Jonathan W, Marin Christopher Mark, Popczun Eric J
Принадлежит:

One or more embodiments relates to compositions, method of using and methods of producing a gas mixture. The method includes supplying a composition LaSrCoMO, where x ranges from 0.5 to 1, y ranges 0.0 to 1-x, z ranges from 0.1 to 1.0, and M is a dopant or dopants where w ranges from 0.0 to 1-z; and energizing the composition directly using electromagnetic energy to heat the composition to a temperature above 700° C. The method further includes contacting the composition with a reactant gas mixture comprising methane and an oxidant forming a product gaseous mixture. 1. A method of producing a gas mixture , the method comprising:{'sub': x', 'y', 'z', 'w', '3, 'supplying a composition LaSrCoMO, where x ranges from 0.5 to 1, y ranges 0.0 to 1-x, z ranges from 0.1 to 1.0, and M is at least one dopant where w ranges from 0.0 to 1-z;'}energizing the composition directly using electromagnetic energy to heat the composition to a temperature above 700° C.; and,contacting the composition with a reactant gas mixture comprising methane and an oxidant forming a product gaseous mixture.2. The method of where the energy comprises microwave energy.3. The method of further comprising heating the composition at or above 800° C.4. The method of claim 1 , where the oxidant comprises a pure stream.5. The method of claim 1 , where the oxidant comprises a mixture of at least COand water.6. The method of claim 1 , where the product gaseous mixture comprises hydrogen and carbon monoxide.7. The method of claim 6 , where the reactant gaseous mixture is converted at or above 50% to gaseous mixture with about or above 50% selectivity to hydrogen and carbon monoxide.8. The method of claim 7 , where the reactant gaseous mixture is converted at or above 97% to gaseous mixture with about or above 96% selectivity to hydrogen and carbon monoxide.9. A method of producing a gas mixture claim 7 , the method comprising:{'sub': x', 'y', 'z', 'w', '3, 'supplying a composition LaSrCoMO, where x ranges from ...

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Номер записи: 62
09-06-2022 дата публикации

Supported Nanoparticle Compositions and Precursors, Processes for Making the Same and Syngas Conversion Processes

Номер: US20220176365A1
Автор: Bunquin Jeffrey C., Guzman Javier, Keusenkothen Paul F., Pena Jennifer R., Willis Joshua J.
Принадлежит:

Disclosed are novel supported nanoparticle compositions, precursors, processes for making supported nanoparticle compositions, processes for making catalyst compositions, and processes for converting syngas. The catalyst composition can comprise nanoparticles comprising metal oxide(s), such as manganese cobalt oxide. This disclosure is particularly useful for converting syngas via the Fischer-Tropsch reactions to make olefins and/or alcohols. 1. A supported nanoparticle composition comprising:a support; anda plurality of nanoparticles on the support, wherein:each nanoparticle comprises a kernel, the kernels have an average particle size from 4 to 100 nm and a particle size distribution of no greater than 20%; the kernels comprise oxygen, a metal element M1, optionally sulfur, optionally phosphorus, an optional metal element M2, and optionally a third metal element M3, where:M1 is selected from Mn, Fe, Co, and combination of two or more thereof;M2 is selected from Ni, Zn, Cu, Mo, W, Ag, and combinations thereof;M3 is selected from Y, Sc, alkaline metals, the lanthanides, group 13, 14, or 15 elements, and combinations thereof; andthe molar ratios of M2, M3, S, and P, if any, to M1 is r1, r2, r3, and r4, respectively, 0≤r1≤2, 0≤r2≤2, 0≤r3≤5, and 0≤r4≤5.2. The supported nanoparticle composition of claim 1 , wherein 0.05≤r1≤0.5 claim 1 , and 0.005≤r2≤0.5.3. The supported nanoparticle composition of claim 1 , wherein the kernels comprise an oxide of at least one metal element from the M1 claim 1 , the M2 claim 1 , or the M3.4. The supported nanoparticle composition of claim 1 , wherein the nanoparticles have an average particle size of from 4 to 20 nm.5. The supported nanoparticle composition of claim 1 , wherein the nanoparticles have a particle size distribution of from 5 to 15%.6. The supported nanoparticle composition of claim 1 , wherein the kernels comprise at least two metal elements.7. The supported nanoparticle composition of claim 1 , wherein the nanoparticles ...

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Номер записи: 63
27-04-2017 дата публикации

PROCESS FOR CATALYTIC DECOMPOSITION OF NITROGEN PROTOXIDE

Номер: US20170113208A1
Автор: CREMONA Alberto, VOGNA EDOARDO
Принадлежит:

A process for removing nitrogen protoxide from gas mixtures which 5 contain it, comprising contacting with a catalyst which contains mixed oxides of copper, manganese and rare earth metals in an amount expressed as percentage by weight of CuO, MnO and rare earth metal oxide in the lowest state of valency of 20-45% CuO, 50-60% MnO, and 5-20% rare earth metal oxide. 1. A process for removing nitrogen protoxide from gas emissions from adipic acid plants comprising contacting with a catalyst which comprises mixed oxides of copper , manganese and lanthanum having a composition expressed as percentage by weight of 55-60% MnO , 25-40% CuO , 9-14% LaO.2. The process according to claim 1 , wherein gas emissions released by the adipic acid plants are made to pass over a fixed catalyst bed at temperatures from 600° C. to 700° C.3. The process according to claim 2 , wherein the emissions released by the adipic acid plants are made to pass over a fixed catalyst bed kept at temperatures from 600 to 700° C.4. The process according to claim 1 , wherein the catalyst is supported on a porous metallic oxide.5. The process according to wherein the catalyst is supported on microspheroidal gamma alumina.6. The process according to claim 5 , wherein the catalyst is supported on granules which have the shape of perforated cylinders or with one or more lobes having through holes parallel to the axis of the granule.7. The process for preparing the catalyst according to - wherein the support is first impregnated with an aqueous solution of a salt of lanthanum or other rare earth metal claim 5 , dried and then calcined at a temperature from 450 to 600° C. and subsequently impregnated with a solution of a copper and manganese salt claim 5 , and then claim 5 , after drying claim 5 , calcined at temperatures from 300 to 500° C. This application is a continuation-in-part of and claims priority to U.S. application Ser. No. 12/523,883, filed Jul. 25, 2009, which is a 371 of PCT/IB2008/000149, dated ...

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Номер записи: 64
05-05-2016 дата публикации

Thermal Stability of Copper-Manganese Spinel as Zero PGM Catalyst for TWC Application

Номер: US20160121308A1
Автор: Abken Anke Elizabeth, Golden Stephen J., Nazarpoor Zahra
Принадлежит: Clean Diesel Technologies, Inc.

Effect of the type of ZPGM material composition to improve thermal stability of ZPGM catalyst systems for TWC application is disclosed. ZPGM catalyst system samples are prepared and configured with washcoat on ceramic substrate, overcoat including doped Zirconia support oxide, and impregnation layer including either CuMnOspinel or CuCoMnOspinel. Testing of ZPGM catalyst samples including variations of aging temperatures and different impregnation layer materials are developed under isothermal steady state sweep test condition for ZPGM catalyst systems to evaluate performance especially NOconversions and level of thermal stability. As a result disclosed ZPGM catalyst systems with most suitable spinel that includes CuCoMnOin impregnation layer exhibit high NOx conversion and significant improved thermal stability compare to CuMnOspinel, which is suitable for under floor and close coupled TWC application. The effect of adding Co to Cu—Mn spinel composition to improve thermal stability confirmed by TPR measurement. 1. A zero platinum group metal (ZPGM) catalyst system comprising:a substrate,a washcoat layer,an overcoat layer, andan impregnation layer;{'sub': x', 'y', '3-x-y', '4, 'wherein the impregnation layer comprises a spinel according to the formula CuCoMnO,'}wherein X and Y are each independently 0.01 to 1.0.2. The ZPGM catalyst system of claim 1 , wherein the substrate is ceramic.3. The ZPGM catalyst system of claim 1 , wherein the overcoat layer is an oxide material.4. The ZPGM catalyst system of claim 3 , wherein the oxide material is doped ZrO.5. The ZPGM catalyst system of claim 1 , wherein the impregnation layer comprises CuMnOspinel.6. The ZPGM catalyst system of claim 1 , wherein the impregnation layer comprises CuCoMnOspinel.7. The ZPGM catalyst system of claim 6 , wherein the spinel is stable up to about 1040° C.8. The ZPGM catalyst system of claim 1 , wherein the washcoat layer is an alumina-based washcoat on substrate.9. The ZPGM catalyst system of ...

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Номер записи: 65
05-05-2016 дата публикации

Thermally Stable Zero PGM Catalysts System for TWC Application

Номер: US20160121309A1
Автор: Golden Stephen J., Nazarpoor Zahra
Принадлежит: Clean Diesel Technologies, Inc.

Effect of the type of material composition employed within overcoat in conjunction with ZPGM composition in impregnation layer on thermal stability and TWC performance of ZPGM catalyst systems is disclosed. Effect of aging temperature on thermal stability of disclosed ZPGM catalyst systems is also described. Testing of ZPGM catalyst samples including isothermal steady state sweep test condition and isothermal oscillating TWC test on disclosed ZPGM catalyst systems show that ZPGM catalyst system that includes combination of CuMnOspinel and YMnOperovskite exhibit higher level of thermal stability at temperature higher than temperatures registered for under floor application of TWC. 1. A zero platinum group metal (ZPGM) catalyst system comprisinga) an overcoat layer comprising a combination of a ZPGM with a doped zirconia, andb) an impregnation layer comprising Cu—Mn spinel.2. The ZPGM catalyst system of claim 1 , wherein the zirconia type support oxide is YMnO/doped ZrO.3. The ZPGM catalyst system of claim 1 , wherein Cu—Mn spinel is according to the formula CuMnO.4. The ZPGM catalyst system of claim 3 , wherein X is 1.5. The ZPGM catalyst system of claim 3 , wherein X is 1.5.6. The ZPGM catalyst system of claim 1 , wherein the Cu—Mn spinel is CuCoMnOspinel.7. The ZPGM catalyst system of further comprising an alumina-based washcoat layer coated on a ceramic substrate.8. A zero platinum group metal (ZPGM) catalyst system comprisinga) an overcoat layer comprising Y—Mn perovskite, andb) an impregnation layer comprises Cu—Mn spinel.9. The ZPGM catalyst system of claim 8 , wherein the Y—Mn perovskite is perovskite YMnO.10. The ZPGM catalyst system of claim 8 , wherein Cu—Mn spinel is according to the formula CuMnO.11. The ZPGM catalyst system of claim 10 , wherein X is 1.12. The ZPGM catalyst system of claim 10 , wherein X is 1.5.13. The ZPGM catalyst system of claim 8 , wherein the Cu—Mn spinel is CuCoMnOspinel.14. The ZPGM catalyst system of further comprising an alumina ...

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Номер записи: 66
07-05-2015 дата публикации

CATALYSTS FOR THERMOCHEMICAL FUEL PRODUCTION AND METHOD OF PRODUCING FUEL USING THERMOCHEMICAL FUEL PRODUCTION

Номер: US20150125383A1
Автор: Haile Sossina M., YAMAZAKI Yoshihiro, Yang Chih-Kai
Принадлежит:

To provide a catalyst, which is formed from a perovskite oxide, for thermochemical fuel production, and a method of producing fuel using thermochemical fuel production that is capable of allowing a fuel to be produced in a thermochemical manner. Provided is a catalyst for thermochemical fuel production, which is used for producing the fuel from thermal energy by using a two-step thermochemical cycle of a first temperature and a second temperature that is equal to or lower than the first temperature, wherein the catalyst is formed from a perovskite oxide having a compositional formula of AXO (provided that, 0≦δ≦1). Here, A represents one or more of a rare-earth element (excluding Ce), an alkaline earth metal element, and an alkali metal element, X represents one or more of a transition metal element and a metalloid element, and O represents oxygen. 1. A method of producing fuel using thermochemical fuel production , comprising:{'sub': '3±δ', 'using a catalyst formed from a perovskite oxide having a compositional formula of AXO (provided that, 0≦δ<1) (here, A represents any one or more of a rare-earth element (excluding Ce), an alkaline earth metal element, and an alkali metal element, X represents one or more of a transition metal element and a metalloid element, and O represents oxygen).'}2. A method of producing fuel using thermochemical fuel production , comprising:{'sub': '3±δ', 'producing a fuel from thermal energy by using a catalyst for thermochemical fuel production formed from a perovskite oxide having a compositional formula of AXO (provided that, 0≦δ<1) (here, A represents any one or more of a rare-earth element (excluding Ce), an alkaline earth metal element, and an alkali metal element, X represents one or more of a transition metal element and a metalloid element, and O represents oxygen) and by using a two-step thermochemical cycle of a first temperature and a second temperature that is equal to or lower than the first temperature,'}wherein the first ...

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Номер записи: 67
17-07-2014 дата публикации

CATALYTIC BIOMASS CONVERSION

Номер: US20140200335A1
Автор: Laarveld Bernard, Olkowski Andrew A.
Принадлежит: NANO-GREEN BIOREFINERIES INC.

A biorefining method of processing a lignocellulosic biomass to separate lignin and hemicellulose from cellulose includes the steps of (a) reacting the biomass in an aqueous slurry having a pH less than 7, comprising a transition metal catalyst, hydrogen peroxide; and (b) separating a solid cellulose fraction from dissolved lignin and hemicellulose fractions. The method may also be used to treat cellulose and produce microcrystalline or nanocrystalline cellulose. The transition metal catalyst may be a nanoparticulate catalyst including multivalent iron, iron oxides and iron hydroxides. The nanoparticulate catalyst may be formed by oxidizing a highly reduced solution of iron, such as groundwater that has not been exposed to oxygen. 1. A method of processing a lignocellulosic biomass to separate lignin and hemicellulose from cellulose , comprising the steps of:(a) reacting the biomass in an aqueous slurry having a pH less than 7, comprising a transition metal catalyst and hydrogen peroxide; and(b) separating a solid cellulose fraction from dissolved lignin and hemicellulose fractions.2. The method of wherein the biomass is pretreated under acidic claim 1 , basic claim 1 , oxidizing or reducing conditions.3. The method of comprising the further step of post-treating the cellulose fraction under acidic claim 2 , basic claim 2 , oxidizing or reducing conditions.4. The method of wherein the pre-treatment or the post-treatment comprises the step of contacting the biomass or the cellulose fraction with an organic acid.5. The method of wherein the organic acid comprises a peracid claim 4 , formic acid claim 4 , or a combination of a peracid and formic acid.6. The method of further comprising the step of post-treating the lignin and/or hemicellulose fractions under acidic claim 1 , basic claim 1 , oxidizing or reducing conditions.7. The method of wherein the aqueous slurry is about 2% to about 20% (w/v).8. The method of wherein the concentration of hydrogen peroxide in the ...

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Номер записи: 68
05-05-2016 дата публикации

CATALYSTS FOR PETROCHEMICAL CATALYSIS

Номер: US20160122261A1
Автор: Alcid Marian, Cizeron Joel M., Gamoras Joel, McCormick Jarod, Nyce Greg, Ras Erik-Jan, Rosenberg Daniel, Rumplecker Anja, Schammel Wayne P., Scher Erik C., Zurcher Fabio R.
Принадлежит:

Metal oxide catalysts comprising various dopants are provided. The catalysts are useful as heterogenous catalysts in a variety of catalytic reactions, for example, the oxidative coupling of methane to C2 hydrocarbons such as ethane and ethylene. Related methods for use and manufacture of the same are also disclosed. 185-. (canceled)86. A catalyst comprising the following formula:{'br': None, 'sub': '3', 'ABO;'} A is an element from the lanthanides or group 2, 3 or 4 of the periodic table;', 'B is an element from groups 4, 12 or 13 of the periodic table or Ce, Eu, Gd, Tb or Ho; and', 'O is oxygen,, 'whereinthe catalyst further comprising one or more dopant from any one of groups 2 or 3, and wherein the catalyst further comprises a methane conversion of greater than 20% and a C2 selectivity of greater than 50% when the catalyst is employed as a heterogeneous catalyst in the oxidative coupling of methane at a temperatures ranging from about 550° C. to about 750° C., and provided that A and B are not the same.87. The catalyst of claim 86 , wherein A is from groups 2 claim 86 , 3 or 4.88. The catalyst of claim 86 , wherein A is Ce claim 86 , Pr claim 86 , Sr claim 86 , Ca claim 86 , Mg claim 86 , Y claim 86 , Zr or Ba.89. The catalyst of claim 86 , wherein B is from group 4.90. The catalyst of claim 86 , wherein B is Zr or Hf.91. The catalyst of claim 86 , wherein the dopant is Sr. Mg or Ca.92. The catalyst of claim 86 , wherein the catalyst comprises one of the following formulas: Y/SrZrO claim 86 , SrHfO claim 86 , SrZrO claim 86 , Mg/SrHfO claim 86 , CaHfOor SrTbO.93. The catalyst of claim 86 , wherein the catalyst is a bulk catalyst.94. The catalyst of claim 86 , wherein the catalyst is a nanostructured catalyst.95. The catalyst of claim 94 , wherein the catalyst is a nanowire.96. A catalytic material comprising the catalyst of in combination with a support or carrier.97. The catalytic material of claim 96 , in the form of a formed aggregate.98. The catalytic ...

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Номер записи: 69
05-05-2016 дата публикации

ELECTRODE COMPOSITION, APPARATUS AND METHOD FOR REMOVING NITROGEN OXIDE

Номер: US20160122886A1
Автор: Fu Qijia, Huang Qunjian, Shapiro Andrew, Wang Shizhong, Yang Hai, Zhang Hua, Zhang Xiao
Принадлежит:

An electrode composition for removing nitrogen oxide, includes: a catalytic material and an adsorption material, wherein the adsorption material is a perovskite material of formula ABO, wherein 0.9 Подробнее

Номер записи: 70
12-05-2016 дата публикации

EXHAUST GAS PURIFYING CATALYST FOR SELECTIVE REDUCTION OF NOX AND EXHAUST GAS PURIFYING METHOD

Номер: US20160129425A1
Автор: MINAMI Keiichi
Принадлежит:

An object of the present invention is to provide an exhaust gas purifying catalyst for selective reduction of NOx, where the NOx adsorption capacity under low temperature, for example, at the time of engine starting, is improved and the selective catalytic reduction (SCR) activity is enhanced, and an exhaust gas purifying method using the catalyst.

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Номер записи: 71
12-05-2016 дата публикации

CATALYST FOR THE OXYCHLORINATION OF ETHYLENE TO 1, 2-DICHLOROETHANE

Номер: US20160129426A1
Автор: Kramer Keith, Tompers Rolf
Принадлежит:

This invention relates to a catalyst containing from about 2 up to about 8% by wt. of copper, zero up to about 0.6 moles/kg of one or more alkali metal(s), from about 0.08 up about 0.85 moles/kg of one or more alkaline earth metals and from about 0.09 up to about 0.9 moles/kg of one or more transition metals selected from the group consisting of Mn, Re and mixtures thereof, where all the metals are impregnated in form of their chlorides or other water soluble salts on a fluidizable support with a BET surface area of from about 80 up to about 220 m/g. A process for the oxychlorination of ethylene to form 1,2-dichloroethane using such a catalyst having good activity, good selectivity and low tendency to stickiness in fluidized bed oxychlorination reactions. 119.-. (canceled)20. A process for preparing a catalyst , comprising:wetting a high surface area support material with an aqueous solution, the aqueous solution comprising:a copper salt,one or more alkali metal saltsone or more alkaline earth metal salts, andone or more transition metals comprising Mn, Re, or mixtures thereof; anddrying the wetted alumina.21. The process of claim 20 , wherein the high surface area support comprises silica claim 20 , magnesia claim 20 , kieselguhr claim 20 , clay claim 20 , fuller's earth claim 20 , alumina claim 20 , or combinations thereof.22. The process of claim 21 , wherein the high surface area support comprises fluidizable alumina.23. The process of claim 21 , wherein the high surface area support comprises multiple mixed phases of alumina comprising gamma alumina claim 21 , delta alumina claim 21 , theta-alumina claim 21 , or combinations thereof.24. The process of claim 20 , wherein the high surface area support comprises a BET surface area of from about 80 m/g up to about 220 m/g.25. The process of claim 23 , wherein the high surface area support material comprises stabilizing components.26. The process of claim 25 , wherein the stabilizing components comprise La claim 25 ...

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Номер записи: 72
02-05-2019 дата публикации

Catalyst for Synthesizing Carbon Nanotube and Method of Synthesizing Carbon Nanotube

Номер: US20190126255A1
Автор: Kwon Yong Tak, Seo Hye Ryun
Принадлежит:

A catalyst for synthesizing a carbon nanotube includes a support containing a metal, and an active metal impregnated on the support. The active metal includes cobalt and manganese. A surface molar ratio of the active metal relative to the metal of the support is 40% or less of a bulk molar ratio of the active metal relative to the metal of the support. A carbon nanotube having high purity and low resistance is obtained from the catalyst. 1. A catalyst for synthesizing a carbon nanotube , including:a support containing a metal; andan active metal impregnated on the support, the active metal including cobalt and manganese,wherein a surface molar ratio of the active metal relative to the metal of the support is 40% or less of a bulk molar ratio of the active metal relative to the metal of the support.2. The catalyst according to claim 1 , wherein the surface molar ratio of the active metal is in a range from 10% to 30% of the bulk molar ratio of the active metal.3. The catalyst according to claim 1 , wherein the support includes an aluminum-based support.4. The catalyst according to claim 3 , wherein the surface molar ratio of the active metal is in a range from 0.03 to 0.06 relative to aluminum in the support claim 3 , and the bulk molar ratio of the active metal is in a range from 0.15 to 0.29 relative to aluminum in the support5. The catalyst according to claim 4 , wherein the surface molar ratio is represented by Equation 1 below:{'br': None, 'i': x', 'y, 'aluminum (Al):cobalt (Co):manganese (Mn)=1:1:1\u2003\u2003[Equation 1]'}wherein in Equation 1, 0.02≤x1≤0.04, 0.01≤y1≤0.02.6. The catalyst according to claim 5 , wherein claim 5 , in Equation 1 claim 5 , 0.0200≤x1≤0.0375 claim 5 , 0.0130≤y1≤0.0189.7. The catalyst according to claim 4 , wherein the bulk molar ratio is represented by Equation 2 below:{'br': None, 'i': x', 'y, 'aluminum (Al):cobalt (Co):manganese (Mn)=1:2:2\u2003\u2003[Equation 2]'}wherein in Equation 2, 0.08≤x2≤0.15, 0.07≤y2≤0.14.8. The catalyst ...

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Номер записи: 73
19-05-2016 дата публикации

Cobalt Containing Bimetallic Zero PGM Catalyst for TWC Applications

Номер: US20160136619A1
Автор: Golden Stephen J., Nazarpoor Zahra, Yaglidere Oguzhan Selim
Принадлежит: Clean Diesel Technologies, Inc.

Variations of bulk powder catalyst material including Cu—Co, Fe—Co, and Co—Mn spinel systems for ZPGM TWC applications are disclosed. The disclosed bulk powder catalyst samples include stoichiometric and non-stoichiometric Cu—Co, Fe—Co, and Co—Mn spinels on PrO—ZrOsupport oxide, prepared using incipient wetness method. Activity measurements under isothermal steady state sweep test condition may be performed rich to lean condition. Catalytic activity of bulk powder samples may be compared to analyze the influence that different bimetallic spinel compositions may have on TWC performance, including ZPGM materials for a plurality of TWC applications. Stoichiometric Cu—Co, Fe—Co, and Co—Mn spinel systems exhibit higher catalytic activity than non-stoichiometric Cu—Co, Fe—Co, and Co—Mn spinel systems. The influence of stoichiometric Cu—Co, Fe—Co, and Co—Mn spinel systems may lead into cost effective manufacturing solutions for ZPGM TWC systems. 1. A catalytic composition , comprising:an oxygen storage material, comprising:a binary spinel on a doped zirconia support oxide;wherein the oxygen storage material converts at least one of NO, CO and HC through oxidation or reduction.2. The composition of claim 1 , wherein the binary spinel is stoichiometric.3. The composition of claim 1 , wherein the binary spinel is non-stoichiometric.4. The composition of claim 1 , wherein the binary spinel comprises Co.5. The composition of claim 1 , wherein the general formula for the binary spinel is selected from the group consisting of Co—Cu claim 1 , Co—Fe claim 1 , and Co—Mn.6. The composition of claim 1 , wherein the general formula for the binary spinel is ABO claim 1 , wherein 01.7. The composition of claim 1 , wherein the general formula for the binary spinel is selected from the group consisting of CuCoO claim 1 , FeCOOand CoMnO.8. The composition of claim 1 , wherein the binary spinel is combined with the support oxide by incipient wetness (IW) method.9. A catalytic composition ...

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Номер записи: 74
19-05-2016 дата публикации

Zero PGM Catalyst Including Cu-Co-Mn Ternary Spinel for TWC Applications

Номер: US20160136620A1
Автор: Golden Stephen J., Nazarpoor Zahra, Yaglidere Oguzhan Selim
Принадлежит: Clean Diesel Technologies, Inc.

Variations of ZPGM bulk powder catalyst materials, including Cu—Co—Mn ternary spinel systems for TWC applications are disclosed. Bulk powder catalyst samples are prepared employing a plurality of molar ratio variations, including disclosed Cu—Co—Mn spinel on Praseodymium-Zirconia support oxide made by incipient wetness method, or Cu—Co—Mn spinel on Niobium-Zirconia support oxide, which may be synthesized by co-precipitation method. A plurality of bulk powder catalyst samples may be tested by performing isothermal steady state sweep test, employing a flow reactor at inlet temperature of about 450° C., and testing a gas stream from lean to rich condition and influence on TWC performance measured/analyzed, which may lead into significant improvements in the manufacturing of ZPGM bulk powder catalyst materials for TWC applications. 17.-. (canceled)913.-. (canceled)1517.-. (canceled)18. The composition of or , wherein the Cu—Co—Mn spinel has the general formula (CuCo)MnOwhere 0.1≦X≦0.3.19. The composition of or , wherein the Cu—Co—Mn spinel has the formula CuCoMnO.20. The composition of or , wherein the Cu—Co—Mn spinel has the formula (CuCo)MnO.21. The composition of or , wherein the Mn of the Cu—Co—Mn spinel is in the spinel B site.22. The composition of or , wherein the oxygen storage material is calcined at about 800° C.23. The composition of or , wherein the oxygen storage material is calcined at about 600° C.24. The composition of or , wherein the spinel A site of Cu—Co—Mn is selected from Cu or Co. N/A1. Field of the DisclosureThe present disclosure may provide Zero-PGM (ZPGM) catalyst materials, which may include stoichiometric or non-stoichiometric Cu—Co—Mn spinel in the form of powder to use for three-way catalyst (TWC) applications.2. Background InformationTWC have utility in a number of fields including the treatment of exhaust gas streams from internal combustion engines, such as automobile, truck and other types of vehicles. Emission standards for unburned ...

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Номер записи: 75
19-05-2016 дата публикации

Bimetallic Synergized PGM Catalyst Systems for TWC Application

Номер: US20160136621A1
Автор: Golden Stephen J., Nazarpoor Zahra
Принадлежит: Clean Diesel Technologies, Inc.

Bimetallic Synergized Platinum Group Metals (SPGM) catalyst systems for TWC application are disclosed. Disclosed bimetallic SPGM catalyst systems may include a washcoat with a Cu—Mn spinel structure and an overcoat that includes PGMs, such as Pd/Rh or Pt/Rh supported on carrier material oxides, such as alumina. Bimetallic SPGM catalyst systems show significant improvement in nitrogen oxide reduction performance under lean operating conditions, which allows a reduced consumption of fuel. Additionally, disclosed bimetallic SPGM catalyst systems exhibit enhanced catalytic activity for carbon monoxide conversion. Furthermore, bimetallic SPGM catalyst systems are found to have enhanced catalytic activity for fresh, hydrothermally aged and fuel cut aged conditions compared to PGM catalyst system, showing that there is a synergistic effect between PGM catalyst and Cu—Mn spinel within the disclosed SPGM catalyst system which help in performance and thermal stability of disclosed SPGM catalyst systems. 1. A bimetallic synergized platinum group metals (SPGM) catalyst system comprising:a) an overcoat comprising a bimetallic PGM catalyst;{'sub': '2', 'b) a washcoat comprising a CU—Mn spinel supported on doped ZrOsupport oxide; and'}c) a substrate.2. The bimetallic SPGM catalyst system of claim 1 , wherein the substrate comprises a ceramic material.3. The bimetallic SPGM catalyst system of claim 2 , wherein the bimetallic PGM catalyst is supported on a carrier material oxide.4. The bimetallic SPGM catalyst system of claim 3 , wherein the carrier material oxide is AlO.5. The bimetallic SPGM catalyst system of claim 1 , wherein the bimetallic PGM catalyst is palladium/rhodium or platinum/rhodium.6. The bimetallic SPGM catalyst system of claim 1 , wherein the bimetallic PGM catalyst comprises about 0.5 g/ftof each metal.7. The bimetallic SPGM catalyst system of claim 1 , wherein the doped ZrOsupport oxide is NbO—ZrO.8. The bimetallic SPGM catalyst system of claim 1 , wherein the Cu ...

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Номер записи: 76
26-05-2016 дата публикации

CERAMSITE CATALYST CONTAINING METAL OXIDE PARTICLES AND PREPARATION METHOD AND APPLICATION THEREOF

Номер: US20160144343A1
Автор: CHEN Zhenguo, GU Xiaoyang, GUO Xunwen, HE Yaozhong, Wang Xiaojun, Xu Jinling
Принадлежит: SOUTH CHINA UNIVERSITY OF TECHNOLOGY

The invention belongs to the technical field of preparation of a ceramsite catalyst and discloses a ceramsite catalyst containing metal oxide particles and a preparation method and application thereof. The preparation method including the following specific steps of: dissolving a metal salt with an ozone catalytic activity in water to obtain a metal salt solution; mixing the metal salt solution with a ceramsite raw material to prepare a ceramsite embryoid body; and sintering the ceramsite embryoid body at a high temperature to obtain the ceramsite catalyst containing metal oxide particles. The ceramsite catalyst containing metal oxide particles of the invention can be repeatedly used, so that secondary pollution is reduced; and with the same ozone input quantity, by adding the ceramsite catalyst containing metal oxide particles of the present invention, the efficiency of water treatment through ozone oxidization can be increased by 41.35%. 1. A preparation method for a ceramsite catalyst containing metal oxide particles , wherein it comprising the following specific steps of: dissolving a metal salt with an ozone catalytic activity in water to obtain a metal salt solution; mixing the metal salt solution with a ceramsite raw material to prepare a ceramsite embryoid body; and sintering the ceramsite embryoid body at a high temperature to obtain the ceramsite catalyst containing metal oxide particles.2. A preparation method for a ceramsite catalyst containing metal oxide particles according to claim 1 , wherein: before said mixing the metal salt solution with a ceramsite raw material claim 1 , taking a part of the ceramsite raw material to prepare ceramsite raw material nucleuses through a sugar-coating preparing machine claim 1 , then mixing the metal salt solution with the remaining ceramsite raw material and then adding same into the above-mentioned ceramsite raw material nucleuses to prepare a ceramsite embryoid body claim 1 , and sintering the ceramsite embryoid ...

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Номер записи: 77
28-05-2015 дата публикации

Methods for Selecting and Applying a Layer of Cu-Mn Spinel Phase to ZPGM Catalyst Systems for TWC Application

Номер: US20150148215A1
Автор: Nazarpoor Zahra
Принадлежит: CLEAN DIESEL TECHNOLOGIES INC. (CDTI)

The present disclosure relates to selecting the layer of applying ZPGM active phase in washcoat, or applying ZPGM active phase in overcoat, for achieving optimized performance and enhanced thermal stability. Applying ZPGM active phase catalyst in overcoat shows improvements compare to applying ZPGM active phase in washcoat. The selected active phase material may include a chemical composition that is substantially free from PGM, including a formulation of stoichiometric Cu—Mn spinel structure active phase deposited on Niobium-Zirconium support oxide. The selected active phase layer applied in overcoat may include a washcoat of alumina coated on a suitable ceramic substrate. The disclosed active phase may be applied in overcoat to maximize efficiency of catalyst systems, which may exhibit enhanced catalytic activity properties, which may stable after aging and under steady state and oscillating condition, showing optimized performance purifying gases in TWC condition. 1. A method for optimizing a catalytic component , comprising:{'sub': 2', '3, 'applying to a substrate a first washcoat comprising ALO,'}{'sub': 2', '5', '2, 'applying to the substrate of a second washcoat or an overcoat having at least one active phase catalyst comprising Cu—Mn and a support oxide comprising NbO—ZrO.'}2. The method of claim 1 , wherein the substrate comprises cordierite.3. The method of claim 1 , wherein the substrate comprises ceramics.4. The method of claim 1 , wherein the substrate comprises a honeycomb structure.5. The method of claim 1 , wherein the at least one active phase catalyst is an aqueous slurry.6. The method of claim 1 , wherein the at least one active phase catalyst comprises at least one spinel structure.7. The method of claim 1 , wherein the Cu—Mn is stoichiometric.8. The method of claim 1 , wherein the at least one active catalyst is calcined at about 600° C.9. The method of claim 1 , wherein the least one active phase catalyst is substantially free from platinum ...

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Номер записи: 78
28-05-2015 дата публикации

Effect of Support Oxides on Optimal Performance and Stability of ZPGM Catalyst Systems

Номер: US20150148222A1
Автор: Nazarpoor Zahra
Принадлежит: CLEAN DIESEL TECHNOLOGIES INC. (CDTI)

The present disclosure relates to selecting support oxide for ZPGM catalyst for optimal performance under TWC condition, for achieving enhanced catalyst activity, and improved thermal stability during aging. The selected active phase material may include a chemical composition that is substantially free from PGM, including a formulation of stoichiometric Cu—Mn spinel structure active phase with Niobium-Zirconium support oxide, which may include a washcoat of pure alumina coated on a suitable ceramic substrate. The disclosed Cu—Mn spinel structure active phase with Niobium-Zirconium support oxide may be applied in overcoat to maximize efficiency of ZPGM catalyst systems, which may exhibit enhanced catalytic activity properties that may increase with temperature, showing optimized performance purifying gases in TWC condition, and enhanced stability during aging. 1. A catalytic composition , comprising:stoichiometric Cu—Mn spinel; andniobium-zirconia support oxide;wherein the stoichiometric Cu—Mn spinel is in active phase and is calcined at about 600° C.2. The composition of claim 1 , wherein the niobium-zirconia support oxide has a general formula of N bO—ZrO.3. The composition of claim 1 , wherein the niobium-zirconia support oxide provides a lower NO/CO cross over R value than PrO—ZrOsupport oxide.4. The composition of claim 3 , wherein the R value is about 1.20.5. The composition of claim 1 , wherein the niobium-zirconia support oxide provides a higher NO conversion rate than PrO—ZrOsupport oxide.6. The composition of claim 1 , wherein the niobium-zirconia support oxide provides a higher HC conversion rate than PrO—ZrOsupport oxide.7. The composition of claim 1 , wherein the stoichiometric Cu—Mn spinel is aged.8. The composition of claim 1 , wherein the catalytic composition is aged.9. The composition of claim 1 , wherein the niobium-zirconia support oxide is aged at 900° C.10. The composition of claim 9 , wherein the aging is hydrothermal aging.11. The composition ...

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Номер записи: 79
28-05-2015 дата публикации

System and Methods for Using Synergized PGM as a Three-Way Catalyst

Номер: US20150148223A1
Автор: Golden Stephen J., Nazarpoor Zahra
Принадлежит: CLEAN DIESEL TECHNOLOGIES INC. (CDTI)

Synergies resulting from combinations of catalyst systems including Copper-Manganese material compositions and PGM catalysts are disclosed. Variations of catalyst system configurations are tested to determine most effective material composition, formulation, and configuration for an optimal synergized PGM (SPGM) catalyst system. The synergistic effect of the selected SPGM catalyst system is determined under steady state and oscillating test conditions, from which the optimal NO/CO cross over R-value indicates enhanced catalytic behavior of the selected SPGM catalyst system as compared with current PGM catalysts for TWC applications. According to principles in the present disclosure, application of Pd on alumina-based support as overcoat and Cu—Mn spinel structure supported on NbO—ZrOas washcoat on suitable ceramic substrate, produce higher catalytic activity, efficiency, and better performance in TWC condition, especially under lean condition, than commercial PGM catalysts. 1. A catalyst system , comprising:at least one substrate;at least one washcoat comprising at least one oxygen storage material further comprising Cu—Mn spinel having a niobium-zirconia support oxide; and{'sub': 2', '3, 'at least one overcoat comprising at least one platinum group metal catalyst and AlO.'}2. The catalyst system of claim 1 , wherein the Cu—Mn spinel comprises CuMnO.3. The catalyst system of claim 1 , wherein the Cu—Mn spinel is stoichiometric.4. The catalyst system of claim 1 , wherein the niobium-zirconia support oxide comprises NbO—ZrO.5. The catalyst system of claim 1 , further comprising at least one impregnation layer.6. The catalyst of claim 1 , wherein the at least one substrate comprises a ceramic.7. The catalyst of claim 1 , wherein the conversion of NO is substantially complete under lean exhaust conditions.8. The catalyst of claim 1 , wherein the conversion of CO is substantially complete under lean exhaust conditions.9. The catalyst of claim 1 , wherein the conversion ...

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Номер записи: 80
10-06-2021 дата публикации

MULTI-TRANSITION METAL DOPED COPPER-COBALT SPINEL CATALYST MATERIAL FOR NOX DECOMPOSITION

Номер: US20210170365A1
Автор: Gunugunuri Krishna, Ling Chen, Peck Torin C., ROBERTS Charles A., ZHANG YING
Принадлежит: Toyota Motor Engineering and Manufacturing North America, Inc.

Catalysts including multi-transition metal doped copper-cobalt spinel mixed oxide catalyst materials for direct NOdecomposition with selectivity to Nfrom combustion engine exhaust, while minimizing formation of the NO product. In one example, the catalyst may include a ternary zinc-doped copper-cobalt spinel material or a quaternary manganese+zinc doped copper-cobalt spinel material. The catalysts are effective for reducing NO to Nat suitable temperatures of 350-500° C., with and without excess Opresence. 1. A catalyst for direct NOx decomposition from an exhaust gas stream , the catalyst comprising a zinc doped copper-cobalt spinel material having the formula: ZnCuCoO , wherein 0.01≤a≤0.4 , and 0.01≤b≤1.5.2. The catalyst according to claim 1 , wherein 0.01≤a≤0.3.3. The catalyst according to claim 1 , wherein 0.01≤b≤1.0.4. The catalyst according to claim 1 , wherein the zinc doped copper-cobalt spinel material is selected from the group consisting of:{'sub': 0.1', '0.2', '2.7', '4, 'ZnCuCoO,'}{'sub': 0.1', '0.4', '2.5', '4, 'ZnCuCoO,'}{'sub': 0.1', '0.5', '2.4', '4, 'ZnCuCoO,'}{'sub': 0.1', '0.6', '2.3', '4, 'ZnCuCoO,'}{'sub': 0.1', '0.7', '2.2', '4, 'ZnCuCoO,'}{'sub': 0.2', '0.2', '2.6', '4, 'ZnCuCoO,'}{'sub': 0.2', '0.3', '2.5', '4, 'ZnCuCoO,'}{'sub': 0.2', '0.4', '2.4', '4, 'ZnCuCoO,'}{'sub': 0.2', '0.5', '2.3', '4, 'ZnCuCoO,'}{'sub': 0.2', '0.6', '2.2', '4, 'ZnCuCoO,'}{'sub': 0.3', '0.3', '2.4', '4, 'ZnCuCoO,'}{'sub': 0.3', '0.4', '2.3', '4, 'ZnCuCoO,'}{'sub': 0.3', '0.5', '2.2', '4, 'ZnCuCoO,'}{'sub': 0.3', '0.6', '2.1', '4, 'ZnCuCoO, and'}{'sub': 0.3', '0.7', '2', '4, 'ZnCuCoO.'}5. The catalyst according to claim 1 , wherein the zinc doped copper-cobalt spinel material has the formula ZnCuCoO.6. A catalyst for direct NOx decomposition from an exhaust gas stream claim 1 , the catalyst comprising a manganese+zinc doped copper-cobalt spinel material having the formula: MnZnCuCoO claim 1 , wherein 0.01≤x≤0.3 claim 1 , 0.01≤a≤0.4 claim 1 , and 0.01≤b≤1.5.7. The ...

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Номер записи: 81
24-05-2018 дата публикации

MULTI-ZONED SYNERGIZED-PGM CATALYSTS FOR TWC APPLICATIONS

Номер: US20180141031A1
Автор: Golden Stephen J., Nazarpoor Zahra
Принадлежит:

Multi-zoned synergized-platinum group metals (SPGM) catalysts with significant catalytic capabilities are disclosed. The multi-zoned SPGM catalysts are produced according to catalyst configurations including OC layers of ultra-low PGM loadings, alone or in combination with a base metal oxide, which are deposited onto either mixtures of doped ZrOand oxygen storage materials (OSM) or OSM alone. Further, the multi-zoned SPGM catalysts further include zoned impregnation layers with PGM, alone or in combination with Ba loadings. Additionally, three-zoned SPGM catalysts are produced including front and back zone catalysts that include binary spinel oxide compositions. Conversion performance of the aged SPGM catalysts and an aged PGM-based OEM catalyst are tested employing TWC low perturbation isothermal oscillating, isothermal steady-state sweep, and light-off test methodologies. Test results confirm the SPGM catalysts including ultra-low PGM loadings and spinel-based ZPGM WC layer are capable of providing significant conversion performance that is comparable to high PGM-based OEM catalyst. 1. A catalyst system for treating an exhaust stream of a combustion engine , comprising:a front zone catalyst region and a back zone catalyst region disposed downstream of the front zone catalyst region, wherein the front zone catalyst region comprises:a substrate;a washcoat layer overlying the substrate;an impregnation layer overlying the washcoat layer, the impregnation layer comprising a platinum group metal;a zoned-impregnation layer overlying the impregnation layer, the zoned-impregnation layer including an inlet zone and an outlet zone downstream of the inlet zone, the inlet zone comprising a platinum group metal and the outlet zone comprising a blank zone; andan overcoat layer overlying the zoned-impregnation layer and comprising iron activated rhodium and a rare earth element-based oxygen storage material;the back zone catalyst region comprising:a substrate;{'sub': X', '3-X', ' ...

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Номер записи: 82
16-05-2019 дата публикации

BASE METAL CATALYST FOR TREATMENT OF OZONE AND VOLATILE ORGANIC COMPOUNDS PRESENT IN AIR SUPPLY

Номер: US20190143270A1
Автор: Alden Laif R., Buelow Mark T., Durilla Michael, Robinson David M.
Принадлежит:

Disclosed herein are base metal catalyst devices for removing ozone, volatile organic compounds, and other pollutants from an air flow stream. A catalyst device includes a housing, a solid substrate disposed within the housing, and a catalyst layer disposed on the substrate. The catalyst layer includes a first base metal catalyst at a first mass percent, a second base metal catalyst at a second mass percent, and a support material impregnated with at least one of the first base metal catalyst or the second base metal catalyst. 120-. (canceled)21. A catalyst composition comprising:a first base metal catalyst;a second base metal catalyst; anda support material impregnated with at least one of the first base metal catalyst or the second base metal catalyst, the support material comprising one or more of ceria, alumina, titania, silica, zirconia, metal organic framework, clay, or zeolite.22. The catalyst composition of claim 21 , wherein the first base metal catalyst and the second base metal catalyst are each independently selected from Cu claim 21 , Fe claim 21 , Co claim 21 , Ni claim 21 , Cr claim 21 , Mn claim 21 , Nd claim 21 , Ba claim 21 , Ce claim 21 , La claim 21 , Pr claim 21 , Mg claim 21 , Ca claim 21 , Zn claim 21 , Nb claim 21 , Zr claim 21 , Mo claim 21 , Sn claim 21 , Ta claim 21 , and Sr claim 21 , with the proviso that the first base metal catalyst and the second base metal catalyst are different.23. The catalyst composition of claim 21 , wherein the first base metal catalyst comprises copper oxide claim 21 , and wherein the copper oxide is present from about 1% to about 30% by mass based on a total mass of the catalyst composition.24. The catalyst composition of claim 23 , wherein the second base metal catalyst comprises manganese oxide claim 23 , and wherein the manganese oxide is present from about 1% to about 30% by mass based on a total mass of the catalyst composition.25. The catalyst composition of claim 21 , wherein the support material is an ...

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Номер записи: 83
16-05-2019 дата публикации

Cu-based catalyst, its preparation process and use thereof

Номер: US20190143307A1
Автор: MA Huixia, QIAO Kai, SU Jie, ZHAI Qingtong, ZHANG Shumei, Zhou Feng
Принадлежит:

The present invention relates to a Cu-based catalyst, a preparation process thereof and its use as the dehydrogenation catalyst in producing a hydroxyketone compound such as acetoin. Said Cu-based catalyst contains copper, at least one auxiliary metal selected from metal of Group IIA, non-noble metal of Group VIII, metal of Group VIB, metal of Group VIIB, metal of Group IIB and lanthanide metal of periodic table of elements, and an alkali metal, and further contains at least one ketone additive selected from a ketone represented by formula (II) and a ketone represented by formula (II′). Said Cu-based catalyst shows a high the acetoin selectivity as the dehydrogenation catalyst for producing acetoin. 1. A Cu-based catalyst , which contains Cu , at least one auxiliary metal selected from metal of Group IIA (preferably at least one of Mg and Ca) , non-noble metal of Group VIII (preferably at least one of Fe and Ni) , metal of Group VIB (preferably Cr) , metal of Group VIIB (preferably Mn) , metal of Group IIB (preferably Zn) and lanthanide metal (preferably ytterbium) of periodic table of elements , an alkali metal and optionally a binder (preferably at least one inorganic binder selected from refractory oxide and aluminosilicate , more preferably at least one inorganic binder selected from alumina , bauxite , pseudo-boehmite , silica , silica-alumina , boehmite , attapulgite , bentonite , kaolin , diatomite and montmorillonite , more preferably at least one inorganic binder selected from alumina , silica , diatomite and kaolin , more preferably alumina) , and further contains at least one ketone additive selected from a ketone represented by formula (II) and a ketone represented by formula (II′) (preferably acetoin) , and optionally a solvent (preferably at least one of C1-6 alcohols , more preferably at least one of C1-6 linear or branched monohydric alcohols , more preferably at least one of methanol and ethanol) ,{'br': None, 'R1-C(═O)—CH(OH)—R2\u2003\u2003(II)'}{' ...

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Номер записи: 84
09-06-2016 дата публикации

METHOD FOR PRODUCING AN EFFICIENT CATALYST FOR GENERATING MULTI-WALLED CARBON NANOTUBES, MULTI-WALLED CARBON NANOTUBES AND CARBON NANOTUBE

Номер: US20160160394A1
Автор: Grasser Stefan, Hocke Heiko, SCHLÜTER Oliver Felix Karl
Принадлежит:

The invention relates to a method for producing a catalyst for the synthesis of multi-walled carbon nanotubes. The invention also relates to a method for producing multi-walled carbon nanotubes and a carbon nanotube powder with improved properties and comprising said carbon nanotubes. 119.-. (canceled)20. A process for producing a catalyst consisting of at least one or more active metals and one or more support materials , which comprises the steps:a) initial charging of a substrate in powder form which serves as support material for the catalyst and dispersion of the substrate powder in a solvent by mechanical action and setting of the dispersion to a pH of at least 8,b) addition of one or more metal salt solutions containing precursor compounds of catalytically active metals and support metals, optionally after resetting of the selected pH so that these are coprecipitated and at the same time deposited on the previously dispersed substrate powder,c) removal and isolation of the precipitated solid,d) optionally washing of the solid with solvent,e) spray-drying or drying and optionally milling and/or sieving (classification),f) optionally calcining at 200° C.-950° C., with reduction or oxidation with subsequent reduction, andg) reduction of the catalyst material formed.21. The process as claimed in claim 20 , wherein the compounds of one or more metals selected from the group consisting of: iron claim 20 , cobalt claim 20 , nickel claim 20 , manganese and molybdenum are used as precursor compounds of the catalytically active metals.22. The process as claimed in claim 20 , wherein the compounds of cobalt and manganese are used as precursor compounds.23. The process as claimed in claim 20 , wherein the precursor compounds for support materials are selected from among one or more compounds of the group of compounds of magnesium claim 20 , aluminum claim 20 , silicon claim 20 , titanium claim 20 , barium and calcium.24. The process as claimed in claim 20 , wherein the ...

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Номер записи: 85
22-09-2022 дата публикации

ZINC MANGANESE-IRON SPINEL WITH AN ALKALI METAL STABILIZER AS AN OXYGEN STORAGE MATERIAL RESISTANT TO RICH/LEAN AGING

Номер: US20220297097A1
Автор: Graham Blake A., Grayson Benjamin A., Gunugunuri Krishna, Peck Torin C., Roberts Charles Alexander
Принадлежит:

An oxygen storage material (OSM) includes a zinc manganese iron oxide (ZMF) and an alkali metal base on the ZMF surface. The ZMF has a spinel structure. The alkali metal containing ZMF can be formed to have a weight percent of alkali metal up to about two percent. The alkali metal carbonate is retained on the ZMF surface upon heating to a temperature greater than 1,000° C. and stabilizes the ZMF to the cycling of an oxygen rich and oxygen lean atmosphere. The OSM additionally catalyzes the oxidation of hydrocarbons and CO and catalyzes the reduction of NOfor use in catalytic converters. 1. An oxygen storage material (OSM) comprising;a zinc manganese iron oxide (ZMF); andan alkali metal base on at least a portion of a surface of the ZMF,wherein the alkali metal base is retained on the at least a portion of the surface of the ZMF upon heating to a temperature greater than 1,000° C.2. The oxygen storage material according to claim 1 , wherein the ZMF has a spinel structure and comprises ZnMnFeO claim 1 , where x is 0.01 to 0.9.3. The oxygen storage material according to claim 1 , wherein the ZMF has a spinel structure and comprises ZnMnFeO.4. The oxygen storage material according to claim 1 , wherein the alkali metal base comprises one or more of lithium carbonate claim 1 , sodium carbonate claim 1 , potassium carbonate claim 1 , rubidium carbonate claim 1 , and cesium carbonate.5. The oxygen storage material according to claim 1 , wherein the alkali metal base comprises sodium carbonate.6. The oxygen storage material according to claim 1 , wherein the alkali metal base comprises rubidium carbonate.7. The oxygen storage material according to claim 1 , wherein the alkali metal base is about 0.3 to about 2 weight percent of the OSM.8. The oxygen storage material according to claim 1 , wherein the alkali metal base is about one weight percent of the OSM.9. The oxygen storage material according to claim 1 , wherein the OSM displays an α-FeOsurface content.10. The oxygen ...

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Номер записи: 86
07-06-2018 дата публикации

METHODS AND CATALYSTS FOR CONVERTING METHANE TO METHANOL

Номер: US20180155263A1
Автор: Elgammal Ramez
Принадлежит:

The invention encompasses methods of directly converting methane- to methanol The invention further encompasses catalysts that efficiently afford this transformation at low temperatures. Exemplary embodiments encompassed by the invention include a gas stream containing methane gas and oxygen,—which is passed over an oxygen-activated catalyst to directly form methanol 1. A catalyst comprising:i. a solid matrix;ii. at least one transition metal;iii. at least one ligand eovalently bound to the solid matrix; andiv. oxygen bound to the transition metal.2. The catalyst of claim 1 , wherein said ligand is bound to said transition metal.3. The catalyst of or claim 1 , wherein said solid matrix is a silica matrix.4. The catalyst of claim 3 , wherein said silica matrix is mesoporous or nanoporous silica.5. The catalyst of any one of to claim 3 , wherein said transition metal is selected from the group consisting of manganese claim 3 , iron claim 3 , cobalt claim 3 , nickel claim 3 , copper claim 3 , and combinations thereof.6. The catalyst of any one of to claim 3 , wherein said ligand comprises a moiety selected from an imidazole moiety claim 3 , a triazole moiety claim 3 , a pyrazole moiety claim 3 , a pyridine moiety claim 3 , and a tetrazole moiety.7. The catalyst of claim 6 , wherein said imidazole moiety claim 6 , said triazole moiety claim 6 , said pyrazole moiety claim 6 , said pyridine moiety claim 6 , and said tetrazole moiety are selected form those depicted within .8. A method for synthesizing an oxygen-activated catalyst claim 6 , the method comprising: (i) contacting a pre-catalyst with oxygen (calcination) in a gaseous environment claim 6 , thereby forming said oxygen-activated catalyst claim 6 , wherein the pre-catalyst comprises (a) a solid matrix; (b) at least one transition metal; and (c) at least one ligand covalently bound to said solid matrix.9. The method of claim 8 , wherein said ligand is bound to said transition metal.10. The method of or claim 8 , ...

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Номер записи: 87
14-05-2020 дата публикации

Base Metal Catalyst and Method of Using Same

Номер: US20200147592A1
Автор: Alden Laif R., Buelow Mark T., Furbeck Howard, Lapadula Gerard D., Pham Tiep, Romanski Francis S., Tran Pascaline Harrison
Принадлежит:

A method for treating the waste stream from a purified terephthalic acid (PTA) process is provided. The method comprises contacting a waste stream containing carbon monoxide (CO), volatile organic compounds (VOCs), and methyl bromide with a catalyst comprising a first base metal catalyst supported on an oxygen donating support that is substantially free of alumina, and at least one second base metal catalyst. 1. A method of treating a waste stream from a purified terephthalic acid (PTA) process , the method comprising:contacting a waste stream comprising carbon monoxide (CO), volatile organic compounds (VOCs), and methyl bromide with a precious metal-free catalyst composition comprising:10 to 20 wt % of CuO;5 to 10 wt % of MnO; andan oxygen donating support that is substantially free of alumina.2. The method of claim 1 , wherein the first base metal catalyst and the at least one second base metal catalyst are selected from Cu claim 1 , Fe claim 1 , Co claim 1 , Ni claim 1 , Cr claim 1 , Mn claim 1 , Nd claim 1 , Ba claim 1 , Ce claim 1 , La claim 1 , Pr claim 1 , Mg claim 1 , Ca claim 1 , Zn claim 1 , Nb claim 1 , Zr claim 1 , Mo claim 1 , Sn claim 1 , Ta claim 1 , and Sr claim 1 , and combinations thereof.3. The method of claim 1 , wherein the oxygen donating support is selected from ceria claim 1 , praseodymia claim 1 , neodymia claim 1 , lanthana claim 1 , yttria claim 1 , titania claim 1 , zirconia claim 1 , and combinations thereof.4. The method of claim 1 , wherein the oxygen donating support comprises ceria.5. The method of claim 4 , wherein the oxygen donating support is doped with one or more oxides of zirconium claim 4 , praseodymium claim 4 , neodymium claim 4 , samarium claim 4 , yttrium claim 4 , or lanthanum of up to about 90 wt % with respect to a total weight of the oxygen donating support.6. The method of claim 1 , wherein the waste stream comprises 3000 to 7000 ppm of CO claim 1 , 1 to 10 ppm of benzene claim 1 , 5 to 100 ppm of methyl bromide ...

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Номер записи: 88
28-08-2014 дата публикации

REJUVENABLE CERAMIC EXHIBITING INTRAGRANULAR POROSITY

Номер: US20140243193A1
Автор: Hall Michelene
Принадлежит:

A cermet catalyst material, including a spinel matrix defining a spinel grain and a plurality metal particles embedded in and on the surface of the spinel grain. When the spinel grain is in a first oxidizing atmosphere and at a temperature above about 800 degrees Celsius the metal particles are absorbed into the spinel matrix in the form of metal cations. When the grain is in an second, less oxidizing atmosphere and at a temperature below about 1100 degrees Celsius the metal cations emerge from the spinel matrix to yield a plurality of metal particles adhering to the spinel grain or residing in intragranular pores. 1. A catalyst obtained by:{'sub': x', '1−x', 'y', '2−y', '4, 'claim-text': wherein A is selected from the group consisting of Co, Cu, Fe, Ni and combinations thereof;', 'wherein A′ is Mn, of which up to two-thirds may be replaced by Mg, Zn and combinations thereof;', 'wherein B is selected from the group consisting of Co, Fe, Mn, and combinations thereof;', 'wherein B′ is selected from the group consisting of Al, Cr, and combinations thereof;', 'wherein x and y are nonzero numbers less than 1 and represent the respective moles of A and B species;', 'wherein 0.25 is less than or equal to (1−x+y)/(2−y); and wherein (1−x+y)/(2−y) is less than 0.44; and wherein (1−x+y)/(2−y) is greater than 0.52 and wherein (1−x+y)/(2−y) is less than or equal to 0.60; and, 'a) preparing a spinel with the general formula AA′[BB′]O;'}b) activating the spinel in a reducing atmosphere to yield metal particles dispersed within and/or on the spinel.2. The catalyst of wherein the metal particles have a composition selected from the group comprising A claim 1 , B claim 1 , and (A claim 1 , B).3. The method of wherein the reducing atmosphere is hydrogen at temperatures between 800 and 1100 degrees Celsius.4. The method of wherein the activated catalyst may be oxidized at temperatures between 800 and 1100 degress Celsius to yield the spinel.6. The cermet catalyst material of wherein ...

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Номер записи: 89
16-06-2016 дата публикации

ZPGM Catalyst Including Co-Mn-Fe and Cu-Mn-Fe Materials for TWC Applications

Номер: US20160167023A1
Автор: Golden Stephen J., Nazarpoor Zahra, Yaglidere Oguzhan S.
Принадлежит: Clean Diesel Technologies, Inc.

Variations of bulk powder catalyst materials, including a plurality of formulations for stoichiometric and non-stoichiometric Co_Mn—Fe spinel and Cu—Mn—Fe spinel, which may be prepared by incipient wetness method, employing variations of molar ratio and general formulation (CoFeMn)O, and CoMnFeOspinel supported on doped ZrOsupport oxide. According to principles in present disclosure, a plurality of formulations for fine grain bulk powder compositions of Cu—Mn—Fe spinel with general formulation of CuMnFeO, may provide solutions for enhanced NOx, CO, and HC conversion performance for TWC applications, employing ZPGM materials for a plurality of TWC applications. Additionally, these types of ternary ZPGM fine grain bulk powder spinel compositions may have a cost effective manufacturing advantage. 1. A catalytic composition , comprising:an oxygen storage material, comprising:Co_Mn—Fe spinel on a doped zirconia support oxide;wherein the oxygen storage material converts at least one of NO, CO and HC through oxidation or reduction.2. The composition of claim 1 , wherein the Co_Mn—Fe spinel is stoichiometric.3. The composition of claim 1 , wherein the Co_Mn—Fe spinel is non-stoichiometric.4. The composition of claim 1 , wherein the Co_Mn—Fe spinel is applied to the support oxide by incipient wetness (IW) method.5. The composition of claim 1 , wherein the Co_Mn—Fe spinel has the general formula (CoFeMn)O claim 1 , wherein Fe/Mn=0.5 claim 1 , x+3z=1 claim 1 , and 0≦δ≦0.2.6. The composition of claim 1 , wherein the Co_Mn—Fe spinel has the general formula CoMnFeOwherein 0≦x≦1.7. The composition of claim 1 , wherein the Co_Mn—Fe spinel has the general formula CuMnFeOwherein x+y+z=3.8. The composition of claim 1 , wherein the doped zirconia comprises PrO—ZrO.9. The composition of claim 1 , wherein the Fe of the Co_Mn—Fe spinel is in the spinel B site.10. The composition of claim 1 , wherein the oxygen storage material is calcined at about 800° C.11. The composition of claim 10 , ...

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Номер записи: 90
16-06-2016 дата публикации

Synergized PGM Catalyst Systems Including Rhodium for TWC Application

Номер: US20160167024A1
Автор: Golden Stephen J., Nazarpoor Zahra
Принадлежит: Clean Diesel Technologies, Inc.

Synergized Platinum Group Metals (SPGM) catalyst system for TWC application is disclosed. Disclosed SPGM catalyst system may include a washcoat that includes Cu—Mn spinel structure, supported on doped ZrO, and an overcoat that includes PGM, such as Rhodium (Rh) supported on carrier material oxides, such as alumina. SPGM catalyst system shows significant improvement in nitrogen oxide reduction performance under lean and also rich operating conditions. Furthermore, disclosed SPGM catalyst systems are found to have enhanced fresh and aged catalytic activity compared to PGM catalyst system, showing that there is a synergistic effect between PGM catalyst, such as Rh, and Cu—Mn spinel within disclosed SPGM catalyst system, which help in activity and thermal stability of disclosed SPGM catalyst. 1. A synergized platinum group metals (SPGM) catalyst system comprising:a) an overcoat comprising a platinum group metal (PGM) catalyst comprising rhodium supported on a carrier material oxide;b) a washcoat comprising a Cu—Mn spinel supported on a support oxide; andc) a substrate.2. The SPGM catalyst system of claim 1 , wherein the substrate is ceramic.3. The SPGM catalyst system of claim 1 , wherein the carrier oxide material is selected from the group consisting of aluminum oxide claim 1 , doped aluminum oxide claim 1 , zirconium oxide claim 1 , doped zirconia claim 1 , titanium oxide claim 1 , tin oxide claim 1 , silicon dioxide claim 1 , zeolite claim 1 , and mixtures thereof.4. The SPGM catalyst system of claim 1 , wherein the carrier material oxide is aluminum oxide.5. The SPGM catalyst system of claim 1 , wherein the Cu—Mn spinel is according to the formula CuMnO.6. The SPGM catalyst system of claim 1 , wherein the Cu—Mn spinel is CuMnO.7. The SPGM catalyst system of claim 1 , wherein the support oxide is a doped ZrOsupport oxide.8. The SPGM catalyst system of claim 1 , wherein the doped ZrOsupport oxide is a Niobium-zirconia support oxide.9. The SPGM catalyst system of ...

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Номер записи: 91
16-06-2016 дата публикации

CATALYST FOR CONVERSION OF SYNTHESIS GAS

Номер: US20160167025A1
Автор: Al-Semahi Mohammed, Karim Khalid, Khan Asad Ahmad, Rakib Mahammad Abdur
Принадлежит:

The disclosed subject matter presents a catalyst or catalyst composition as well as the methods of making and using the catalyst or catalyst composition. In one aspect, the disclosed subject matter relates to a catalyst comprising CoMnSiXYOwherein in X comprises an element from Group 11; Y comprises an element from Group 12; a ranges from 0.8 to 1.2; b ranges from 0.1 to 1; c ranges from 0.01 to 0.05; d ranges from 0.01 to 0.05; x is a number determined by the valency requirements of the other elements present; and wherein the catalyst converts synthesis gas to at least one olefin. 1. A catalyst comprising{'br': None, 'sub': a', 'b', 'c', 'd', 'x, 'CoMnSiXYO'} a ranges from 0.8 to 1.2;', 'b ranges from 0.1 to 1;', 'c ranges from 0.001 to 0.05;', 'd ranges from 0.001 to 0.05;', 'x is a number determined by the valency requirements of the other elements present; and', 'wherein the catalyst converts synthesis gas to at least one olefin., 'wherein X comprises an element from Group 11; Y comprises an element from Group 12;'}2. (canceled)3. (canceled)4. (canceled)5. (canceled)6. The catalyst of claim 1 , wherein the catalyst does not comprise a carbonate group.7. The catalyst of claim 1 , wherein X is copper and wherein Y is zinc.8. (canceled)9. The catalyst of claim 1 , wherein the Si is an amorphous silica and wherein the amorphous silica has a pH in the range from 3 to 5.10. (canceled)11. The catalyst of claim 9 , wherein the specific surface area of the amorphous silica ranges from 100 m/g to 800 m/g.12. A catalyst composition comprising the catalyst of and a catalyst support comprising magnesia claim 1 , alumina claim 1 , silica claim 1 , zirconia claim 1 , titania claim 1 , carbon claim 1 , or zeolite claim 1 , or a combination thereof.13. The catalyst composition of claim 12 , wherein the catalyst composition comprises carbon comprising activated carbon or nonactivated carbon claim 12 , or a combination thereof.14. The catalyst composition of claim 12 , wherein the ...

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Номер записи: 92
16-06-2016 дата публикации

HYDROCARBON-DECOMPOSING CATALYST, METHOD FOR DECOMPOSING HYDROCARBONS USING THE CATALYST, PROCESS FOR PRODUCING HYDROGEN USING THE CATALYST, AND POWER GENERATION SYSTEM

Номер: US20160167963A1
Автор: Kobayashi Naoya, Takahashi Shinji
Принадлежит:

The present invention relates to a hydrocarbon-decomposing catalyst comprising magnesium, aluminum and nickel as constitutional elements, containing silicon in an amount of 0.001 to 20% by weight (calculated as Si) based on the weight of the catalyst, and having a nickel content of 0.1 to 40% by weight (calculated as metallic nickel) based on the weight of the catalyst; and a hydrocarbon-decomposing catalyst comprising a porous carrier and a catalytically active metal carried on the carrier, said porous carrier comprising magnesium and aluminum as constitutional elements and containing silicon in an amount of 0.001 to 20% by weight (calculated as Si) based on the weight of the catalyst, and said catalytically active metal comprising fine metallic nickel particles, a content of said fine metallic nickel particles being 0.1 to 40% by weight (calculated as metallic nickel) based on the weight of the catalyst. The hydrocarbon-decomposing catalyst of the present invention is less expensive, and can exhibit an excellent catalytic activity capable of decomposing Cor more hydrocarbons, a good anti-coking property even under a less steam condition, a good effect of reducing an amount of ammonia by-produced even upon using nitrogen-containing hydrocarbon fuels, and a sufficient strength capable of preventing the catalyst from being crushed and broken even upon occurrence of coking inside thereof, and an excellent durability. 1. A process for producing hydrogen comprising adding steam to a hydrocarbon-containing gas and contacting the hydrocarbon-containing gas with a hydrocarbon-decomposing catalyst ,the hydrocarbon-containing catalyst comprising magnesium, aluminum and nickel as constitutional elements, and silicon contained therein, wherein a content of the said nickel is 0.1 to 40% by weight, calculated as metallic nickel, based on the weight of the catalyst, and a content of said silicon is 0.001 to 20% by weight, calculated as Si, based on the weight of the catalyst.2. ...

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Номер записи: 93
15-06-2017 дата публикации

A CATALYST RECOVERY AND RECYCLING PROCESS DURING AROMATIC CARBOXYLIC ACID PRODUCTION

Номер: US20170166508A1
Автор: Aduri Pavankumar, Jain Suresh Shantilal, Shankaranarayanan Vivek, Uppara Parasuveera
Принадлежит: RELIANCE INDUSTRIES LIMITED

The present disclosure provides a process for recovering and recycling a catalyst from the mother liquor generated during the production of aromatic carboxylic acids. The process comprises treating the mother liquor with an alkyl aromatic compound and further treating the first aqueous layer obtained with an ionic liquid to obtain a catalyst rich aqueous mixture. The catalyst rich aqueous mixture is recycled to the oxidation reactor. 1. A process for recovering and recycling a catalyst from a portion of the mother liquor containing said catalyst generated during the production of aromatic carboxylic acids by the oxidation of alkyl aromatics , said process comprising the following steps:a. mixing said mother liquor with an alkyl aromatic compound in the temperature range from 20 to 80° C. in a reactor to obtain a first mixture;b. allowing said first mixture to stand to obtain a first biphasic mixture having a first aqueous layer and a first organic layer;c. separating said first aqueous layer from said first biphasic mixture;d. treating said first aqueous layer with an ionic liquid in the temperature range from 20 to 60° C. under stirring to obtain a second mixture;e. allowing said second mixture to stand to obtain a second biphasic mixture having a second aqueous layer and a second organic layer;f. separating said second aqueous layer from said second biphasic mixture to recover a catalyst rich aqueous mixture; andg. recycling said catalyst rich aqueous mixture to the oxidation reactor.2. The process as claimed in claim 1 , wherein said catalyst is an organic or an inorganic salt of at least one transition metal selected from the group consisting of cobalt claim 1 , manganese claim 1 , chromium claim 1 , copper claim 1 , nickel claim 1 , vanadium claim 1 , iron claim 1 , molybdenum claim 1 , tin claim 1 , cerium claim 1 , zirconium claim 1 , cesium and titanium and a combination thereof.3. The process as claimed in claim 1 , wherein said alkyl aromatic compound is ...

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Номер записи: 94
21-05-2020 дата публикации

Process for Producing a Fischer-Tropsch Synthesis Catalyst

Номер: US20200156049A1
Автор: OJEDA PINEDA Manuel, Paterson Alexander James
Принадлежит:

The present invention relates to a process for conveniently preparing a supported cobalt-containing Fischer-Tropsch synthesis catalyst having improved activity and selectivity for C hydrocarbons. In one aspect, the present invention provides a process for preparing a supported cobalt-containing Fischer-Tropsch synthesis catalyst, said process comprising the steps of: (a) impregnating a support material with: i) a cobalt-containing compound and ii) acetic acid, or a manganese salt of acetic acid, in a single impregnation step to form an impregnated support material; and (b) drying and calcining the impregnated support material; wherein the support material impregnated in step (a) has not previously been modified with a source of metal other than cobalt; and wherein when the cobalt-containing compound is cobalt hydroxide, a manganese salt of acetic acid is not used in step (a) of the process. 1. A process for preparing a supported cobalt-containing Fischer-Tropsch synthesis catalyst , said process comprising the steps of:(a) impregnating a support material with: i) a cobalt-containing compound and ii) acetic acid, or a manganese salt of acetic acid, in a single impregnation step to form an impregnated support material; and(b) drying and calcining the impregnated support material;wherein the support material impregnated in step (a) has not previously been modified with a source of metal other than cobalt; andwherein when the cobalt containing-compound is cobalt hydroxide, a manganese salt of acetic acid is not used in step (a) of the process.2. A process according to claim 1 , wherein the support material is in the form of a powder or granulate and impregnation step (a) forms an impregnated support powder or granulate claim 1 , the process further comprising extruding the impregnated support powder or granulate to form an extrudate prior to step (b).3. A process according to claim 1 , wherein the support material is in the form of a powder or granulate and impregnation ...

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Номер записи: 95
21-05-2020 дата публикации

SEMICONDUCTOR PHOTOCATALYST AND PREPARATION METHOD THEREOF

Номер: US20200156053A1
Автор: Mollasaraei Maryam Shabani, Parapari Amir Haghighi, Parapari Mohammad Haghighi
Принадлежит:

The present invention discloses a novel magnetic BiOCl—BiOCl/MnFeO—FeOsemiconductor photocatalyst as a staggered multi-heterojunction nano-photocatalyst for pharmaceutical effluents remediation, and preparation method and use thereof. The semiconductor photocatalysts are at weighted ratios 9:1 4:1, 7:3 and 3:2 of BiOCl—BiOCland MnFeO—FeOsemiconductor. The BiOCl—BiOCl/MnFeO—FeOsemiconductor photocatalyst with 10% MnFeO—FeOis a solar light activated photocatalyst for pharmaceutical effluents remediation. The pharmaceutical effluents include ofloxacin antibiotic. The mentioned semiconductor photocatalyst effectively removes the ofloxacin (OFL) antibiotic from polluted aqueous solution under simulated solar light, facilitates separation of photocatalyst from treated aqueous solution using magnetic property, enhances light absorption edge, improves intra-particle mass transfer, increases adsorption capacity and promotes efficient surface reactions, which includes: increasing the light absorption range, increasing quantum efficiency and reducing the recombination phenomenon. 1. A method of preparing a semiconductor photocatalyst , comprising:{'sub': 2', '4', '2', '3, 'preparing a mixed phase of MnFeO—FeO; and'}{'sub': 24', '31', '10', '24', '31', '10', '2', '4', '2', '3, 'reacting said mixed phase with a BiOCl—BiOClprecursor phase, to form a staggered multi-heterojunction structure of BiOCl—BiOCl/MnFeO—FeO(BOC-MFO) semiconductor photocatalyst.'}2. The semiconductor photocatalyst of claim 1 , is a solar light activated photocatalyst for pharmaceutical effluents remediation.3. The semiconductor photocatalyst of claim 2 , wherein the pharmaceutical effluents include ofloxacin antibiotic.4. The semiconductor photocatalyst of claim 1 , is in a form of composite nanosheets.5. The semiconductor photocatalyst of claim 1 , is of at least one of the weight ratios of 9:14:1 claim 1 , 7:3 or 3:2.6. The semiconductor photocatalyst of claim 1 , is synthesized through sono-solvothermal ...

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Номер записи: 96
25-06-2015 дата публикации

METHOD FOR THE SELECTIVE PRODUCTION OF N-METHYL-PARA-ANISIDINE

Номер: US20150175525A1
Автор: Beliakov Nikolay Grigorievich, Frolov Alexander Yurievich, Ivanov Yuriy Alexandrovich
Принадлежит: ZAKRITOYE AKTSIONERNOE OBSHESTVO "IFOHIM"

The invention “Method for selective synthesis of N-methyl-para-anisidine” relates to chemical technology processes, namely to catalytic alkylation of aromatic amines and nitro compounds. 1. The process for synthesis of N-methyl-para-anisidine , consist in that N-alkylation of para-nitroanisole and/or para-anisidine is performed in vapor phase on dehydrogenating catalyst at a temperature 180-260° C. and atmospheric pressure with subsequent product isolation using rectification.2. The process of wherein N-methyl-para-anisidine is produced claim 1 , correspondingly claim 1 , from para-nitroanisole.3. The process of wherein N-methyl-para-anisidine is produced claim 1 , correspondingly claim 1 , from para-anisidine.4. The process of wherein N-alkylation is performed in nitrogen stream.5. The process of wherein N-alkylation is performed in hydrogen stream.6. The process of wherein the catalyst has the following composition: CuO—55%; ZnO—10.5%; CrO—13.5%; AlO0 the rest.7. The process of wherein the catalyst has the following composition CuO—25%; ZnO—25%; CaO—5%; AlO—the rest.8. The process of wherein the catalyst has the following composition: CuO—25-45%; BaO—2-10%; TiO—15-35%; CrO—the rest.9. The process of wherein the catalyst has the following composition: CuO—35-45%; ZnO—25-35%; NiO—3-8%; AlO—the rest.10. The process of wherein the catalyst has the following composition: CuO—12-19% MnO—2-3%; CrO—1.0-1.4%; FeO—1.0-1.4%; CoO—0.5-0.8%; AlO—the rest.11. The process of wherein Raney nickel catalyst is used.12. The process of wherein BASF Cu-E403TR catalyst is used with the following composition: copper chromite—67-71% claim 6 , copper—11-15% claim 6 , copper oxide—8-21% claim 6 , graphite—0-4% claim 6 , chromium (3+) oxide—0-3%.13. The process of wherein BASF Cu-0203T 1/8 catalyst is used with the following composition: copper oxide—75-100% claim 6 , chromium (3+) oxide—0.1-1%.14. The process of wherein BASF Cu-E406 TR catalyst is used with the following composition: Cu—36% ...

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Номер записи: 97
11-09-2014 дата публикации

Base Metal Catalyst And Method Of Using Same

Номер: US20140255284A1
Автор: Alden Laif R., Buelow Mark T., Furbeck Howard, Lapadula Gerard D., Pham Tiep, Romanski Francis S., Tran Pascaline Harrison
Принадлежит: BASF CORPORATION

A catalyst for oxidizing carbon monoxide (CO), volatile organic compounds (VOCs), and methyl bromide (CHBr) is provided. The catalyst comprises a first base metal catalyst supported on an oxygen donating support that is substantially free of alumina, and at least one second base metal catalyst. Also provided is a method for treating the waste stream from a purified terephthalic acid (PTA) process, the method comprising contacting a waste stream containing carbon monoxide (CO), volatile organic compounds (VOCs), and methyl bromide with a catalyst comprising a first base metal catalyst supported on an oxygen donating support that is substantially free of alumina, and at least one second base metal catalyst.

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Номер записи: 98
11-09-2014 дата публикации

COBALT-BASED NANO CATALYST AND PREPARATION METHOD THEREOF

Номер: US20140256535A1
Автор: CHEN Yilong, FANG Zhangjian, TAO Leiming, XUE Yongjie, ZHAN Xiaodong, ZHANG Yanfeng
Принадлежит: WUHAN KAIDI ENGINEERING TECHNOLOGY RESEARCH NSTITUTE CO., LTD.

A cobalt-based nano catalyst including a metal combination as a core and a porous material as a shell. The metal combination includes a first metal component Co, a second metal component selected from Ce, La, and Zr, and a third metal component selected from Pt, Ru, Rh, and Re. The catalyst includes between 10 and 35 wt. % of the first metal component, between 0.5 and 10 wt. % of the second metal component, between 0.02 and 2 wt. % of the third metal component, and a carrier. The carrier is a porous material such as nano silica or alumina. The carrier is in the shape of a spheroid, has a pore size of between 1 and 20 nm and a specific area of between 300 and 500 m/g. The active component of the catalyst has a particle size of between 0.5 and 20 nm.

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Номер записи: 99
23-06-2016 дата публикации

HIGH PERFORMANCE POLYOXOMETAL CATALYST AND METHOD FOR PRODUCING THE SAME

Номер: US20160175818A1
Автор: CHOI Byung Yul, CHOI Young Hyun, KIM Duk Ki, LIM Hyun Sub, PARK Ju Yeon, SHIN Hyun Jong
Принадлежит:

Disclosed are a high-performance polyoxometalate catalyst and a method of preparing the same. More particularly, disclosed are a high-performance polyoxometalate catalyst which may enhance activity and selectivity by controlling the content of vanadium, etc. exhibits superior reproducibility, and may produce unsaturated carboxylic acid with high yield and long lifespan from unsaturated aldehyde, and a method of preparing the same. 1. A polyoxometalate catalyst comprising a metal oxide represented by Formula 1 below:{'br': None, 'sub': a', 'b', 'c', 'd', 'e', 'f', 'g, 'MoAVBCDO\u2003\u2003[Formula 1]'}wherein A is at least one element selected from W and Cr, B is at least one element selected from the group consisting of P, As, B, Sb, Ce, Pb, Mn, Nb and Te, C is at least one element selected from the group consisting of Si, Al, Zr, Rh, Cu, Ni, Ti, Ag, Fe, Co and Sn, D is at least one element selected from the group consisting of Na, K, Li, Rb, Cs, Ta, Ca, Mg, Sr and Ba, and a, b, c, d, e, f and g denote an atomic ratio of each element, but, when a=12, b is 0.01 to 15, c is 0.01 to 15, d is 0 to 20, e is 0 to 20, f is 0 to 20, and g is determined according to an oxidation state of each of the ingredients,{'sup': 4+', '4+', '5+, 'wherein, in the vanadium (V), a mole ratio of V relative to a sum of V and V is 0.47 to 1.'}2. The polyoxometalate catalyst according to claim 1 , wherein each of d claim 1 , e and f is 0.01 to 20.3. The polyoxometalate catalyst according to claim 1 , wherein a mole ratio of V to A (V/A) is 0.01 to 10.4. The polyoxometalate catalyst according to claim 1 , wherein the polyoxometalate catalyst comprises an inactive carrier as a support of the metal oxide.5. The polyoxometalate catalyst according to claim 4 , wherein a coating amount of the metal oxide coated on the inactive carrier is 30 to 80% by weight.6. The polyoxometalate catalyst according to claim 1 , wherein the polyoxometalate catalyst is a partial vapor-phase oxidation catalyst ...

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Номер записи: 100