And Group Iii Metal Containing (i.e., Sc, Y, Al, Ga, In Or Tl) Patents (Class 502/320)
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Patent number: 7638455Abstract: A process for the preparation of a catalyst, which process comprises the steps of: i) mixing an alumina precursor with combustible carbon-containing fibers with a diameter in the range of from 0.5 to 5 ?m and a length of no greater than 100 ?m in an amount in the range of from 20 to 40 wt % based on the total dry mixture; ii) adding nitric acid and water to form an extrudable mass; iii) extruding the mixture to form shaped particles; iv) drying the shaped particles; v) heating the particles in an atmosphere comprising no more than 5 vol % oxygen at a temperature in the range of from 350 to 600° C.; and vi) then heating the particles in a gas mixture comprising at least 12 vol % oxygen at a temperature in the range of from 450 to 600° C.Type: GrantFiled: March 8, 2007Date of Patent: December 29, 2009Assignee: Shell Oil CompanyInventors: Peter Birke, Frank Heinz Goerlitz, Wigbert Gerhard Himmel, Jürgen Hunold, Hans-Heino John
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Publication number: 20090305872Abstract: Fluid catalytic cracking process comprising the steps of (a) preparing a physical 5 mixture comprising (i) aluminium trihydrate and/or flash-calcined aluminium trihydrate and (ii) a divalent metal oxide, hydroxide, carbonate, or hydroxycarbonate, (b) shaping the physical mixture of step a) to form fluidisable particles, and (c) adding the fluidisable particles obtained from step b) or step c) to a fluid catalytic cracking unit. In this FCC process, active sites of the catalyst composition are formed in-situ, i.e. in the FCC unit, without requiring peptisation, aging, or calcination steps prior to the addition of the composition to the hydrocarbon conversion unit.Type: ApplicationFiled: November 19, 2005Publication date: December 10, 2009Applicant: ALBEMARLE NETHERLANDS BVInventors: Dennis Stamires, Paul O'Connor
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Patent number: 7628968Abstract: The present invention is directed to high activity titanium oxide DeNOx catalysts. In preferred embodinents, by depositing vanadium oxide on a titania supported metal oxide such as tungsten oxide, an improved catalyst may be generated. This catalyst may be used in the treatment of exhaust from sources such as automobiles and industrial plants.Type: GrantFiled: May 23, 2008Date of Patent: December 8, 2009Assignee: Millenium Inorganic Chemicals, Inc.Inventors: Steven M Augustine, Guoyi Fu
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Patent number: 7598203Abstract: Provided are a hydrogenation catalyst for hydrocarbon oil, having markedly improved desulfurization activity, denitrogenation activity, and dearomatization activity; a carrier for the catalyst and its production; and a method of hydrogenation of hydrocarbon oil with the catalyst.Type: GrantFiled: January 17, 2007Date of Patent: October 6, 2009Assignee: Idemitsu Kosan Co., Ltd.Inventors: Narinobu Kagami, Ryuichiro Iwamoto
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Patent number: 7598204Abstract: A reagent suitable for use as a catalyst comprises a first metal species substrate having a second reduced metal species coated thereon, the second reduced metal species being less electropositive than the first metal. Methods of manufacture are also provided.Type: GrantFiled: September 19, 2005Date of Patent: October 6, 2009Assignee: General Motors CorporationInventors: Andrew M. Mance, Tao Xie, Belabbes Merzougui
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Patent number: 7592290Abstract: The invention relates to supported catalysts and a process for the production of these catalysts. These supported catalysts may be used in various reactions such as reforming reactions (e.g. steam methane reforming (SMR) reactions and autothermal reforming (ATR) reactions). In one aspect of the invention, the supported catalyst comprises a transition metal oxide; optionally a rare-earth metal oxide; and a transition metal aluminate.Type: GrantFiled: April 7, 2005Date of Patent: September 22, 2009Assignee: Sulzer Metco(Canada) Inc.Inventors: Syed Tajammul Hussain, Eugene Stelmack
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Publication number: 20090232728Abstract: A water gas shift catalyst for use at temperatures above about 450° C. up to about 900° C. or so comprising rhenium deposited on a support, preferably without a precious metal, wherein the support is prepared from a high surface area material, such as a mixed metal oxide, particularly a mixture of zirconia and ceria, to which may be added one or more of a high surface area transitional alumina, an alkali or alkaline earth metal dopant and/or an additional dopant selected from Ga, Nd, Pr, W, Ge, Fe, oxides thereof and mixtures thereof.Type: ApplicationFiled: March 14, 2008Publication date: September 17, 2009Applicant: Sud-Chemie Inc.Inventors: Jon P. Wagner, Michael W. Balakos, Chandra Ratnasamy
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Patent number: 7589044Abstract: A method comprising contacting a donor support with a recipient support to generate a mixture, and heating the mixture to produce a polymerization catalyst, wherein a metal or a metal-containing compound migrates from the donor support to the recipient support. A method comprising contacting a donor support comprising inactive metal species with a recipient support, and mobilizing the inactive metal species from the donor support to form an active metal species on the recipient support.Type: GrantFiled: October 2, 2007Date of Patent: September 15, 2009Assignee: Chevron Phillips Chemical Company LPInventors: Max P. McDaniel, Kathy S. Collins, Elizabeth A. Benham, William B. Beaulieu
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Patent number: 7585812Abstract: A catalyst for use in the Fischer-Tropsch process, and a method to prepare the catalyst is disclosed. The catalyst of the present invention has a higher surface area, more uniform metal distribution, and smaller metal crystallite size than Fischer-Tropsch catalysts of the prior art.Type: GrantFiled: June 20, 2008Date of Patent: September 8, 2009Assignee: Sud-Chemie Inc.Inventors: X. D. Hu, Patrick J. Loi, Robert J. O'Brien
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Publication number: 20090215613Abstract: The present invention is directed to yttrium compositions and methods for making such metal oxide compositions, specifically, metal oxide compositions having high surface area, high metal/metal oxide content, and/or thermal stability with inexpensive and easy to handle materials.Type: ApplicationFiled: November 1, 2007Publication date: August 27, 2009Applicant: Symyx Technologies, Inc.Inventor: Alfred Hagemeyer
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Publication number: 20090185968Abstract: The present invention is directed to a catalytic member, and a method of use for the treatment of pollutants in a gaseous stream. More specifically, the present invention is directed to a catalyst member comprising a substrate coated with a metallic anchor layer to enhance the adherence of a catalytic washcoat layer.Type: ApplicationFiled: January 18, 2008Publication date: July 23, 2009Inventors: Michael Galligan, Young Kim
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Patent number: 7563743Abstract: This invention relates to doped catalysts on an aluminosilicate substrate with a low content of macropores and the hydrocracking/hydroconversion and hydrotreatment processes that use them. The catalyst comprises at least one hydro-dehydrogenating element that is selected from the group that is formed by the elements of group VIB and group VIII of the periodic table and a dopant in a controlled quantity that is selected from among phosphorus, boron, and silicon and a non-zeolitic substrate with a silica-alumina base that contains a quantity of more than 15% by weight and of less than or equal to 95% by weight of silica (SiO2).Type: GrantFiled: September 8, 2005Date of Patent: July 21, 2009Assignee: Institute Francais du PetroleInventors: Patrick Euzen, Alexandra Chaumonnot, Carole Bobin, Patrick Bourges, Christophe Gueret, Hugues Dulot
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Patent number: 7560047Abstract: The present invention relates to a structured catalyst for reforming of gasoline and a method of preparing the same, more particularly to a structured catalyst for reforming of gasoline for fuel-cell powered vehicles prepared by wash-coating the transition metal based reforming catalyst on the surface of the ceramic honeycomb support wash-coated with sub-micron sized alumina or its precursor to sufficiently increase the effective surface area and the performance of the catalyst and a method of preparing the same.Type: GrantFiled: July 28, 2008Date of Patent: July 14, 2009Assignee: Korea Institute of Science and TechnologyInventors: Dong Ju Moon, Jong Woo Ryu, Dong Min Kang, Byung Gwon Lee, Byoung Sung Ahn, Sang Deuk Lee
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Patent number: 7557062Abstract: An unsupported catalyst composition which comprises one or more Group VIb metals, one or more Group VIII metals, and a refractory oxide material which comprises 50 wt % or more titania, on oxide basis, which is prepared by precipitation techniques, finds use in the hydroprocessing of hydrocarbonaceous feedstocks.Type: GrantFiled: February 20, 2004Date of Patent: July 7, 2009Assignee: Shell Oil CompanyInventors: Laszlo Domokos, Hermanus Jongkind, Willem Hartman Jurriaan Stork, Johanna Maria Helena Van den Tol-Kershof
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Patent number: 7541012Abstract: The present invention features a catalytic material which includes a metal catalyst anchored to a nano-sized crystal containing a metal oxide. Furthermore, the present invention features a method of producing the catalytic material described herein. Finally, the present invention features using the catalytic material for removing contaminants and for getting the desired products.Type: GrantFiled: July 7, 2004Date of Patent: June 2, 2009Assignee: The Hong Kong University of Science and TechnologyInventors: King Lun Yeung, Nan Yao, Ka Yee Ho
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Publication number: 20090092534Abstract: Processes for purifying silicon tetrafluoride source gas by subjecting the source gas to one or more purification processes including: contacting the silicon tetrafluoride source gas with an ion exchange resin to remove acidic contaminants, contacting the silicon tetrafluoride source gas with a catalyst to remove carbon monoxide, by removal of carbon dioxide by use of an absorption liquid, and by removal of inert compounds by cryogenic distillation; catalysts suitable for removal of carbon monoxide from silicon tetrafluoride source gas and processes for producing such catalysts.Type: ApplicationFiled: September 11, 2008Publication date: April 9, 2009Applicant: MEMC Electronic Materials, Inc.Inventors: Vithal Revankar, Jameel Ibrahim
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Publication number: 20090054224Abstract: A method of preparing a catalyst support is described comprising washing a precipitated metal oxide material with water and/or an aqueous solution of acid and/or base such that contaminant levels in said precipitated metal oxide are reduced. The method may be applied to precipitated alumina materials to reduce contaminants selected from sulphur, chlorine, Group 1 A and Group 2A metals. The catalyst supports may be used to prepare catalysts for the Fischer-Tropsch synthesis of hydrocarbons.Type: ApplicationFiled: March 21, 2006Publication date: February 26, 2009Applicant: Johnson Matthey PicInventors: John L. Casci, Elizabeth M. Holt, Adel F. Neale
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Patent number: 7491860Abstract: A process for adiabatic, non-oxidative dehydrogenation of hydrocarbons including passing a hydrocarbon feed stream through a catalyst bed, wherein the catalyst bed includes a first layer of a catalyst and second layer of a catalyst, wherein the catalyst of the first layer has high activity but a higher capacity for producing coke than the catalyst of the second layer and the second catalyst also has high activity but a lower capacity for producing coke than the catalyst of the first layer.Type: GrantFiled: August 3, 2005Date of Patent: February 17, 2009Assignee: Süd-Chemie Inc.Inventors: Vladimir Fridman, Michael Urbancic, Andrzej Rokicki
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Patent number: 7491676Abstract: The present invention is directed to high activity titanium oxide DeNOx catalysts. In preferred embodiments, by depositing vanadium oxide on a titania supported metal oxide such as tungsten oxide, an improved catalyst may be generated. This catalyst may be used in the treatment of exhaust from sources such as automobiles and industrial plants.Type: GrantFiled: October 19, 2004Date of Patent: February 17, 2009Assignee: Millennium Inorganic ChemicalsInventors: Steven M. Augustine, Guoyi Fu
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Patent number: 7485597Abstract: A method for improving the selectivity of a supported highly selective epoxidation catalyst comprising silver in a quantity of at most 0.17 g per m2 surface area of the support, which method comprises contacting the catalyst, or a precursor of the catalyst comprising the silver in cationic form, with a feed comprising oxygen at a catalyst temperature above 250° C. for a duration of up to 150 hours, and subsequently decreasing the catalyst temperature to a value of at most 250° C.; and a process for the epoxidation of an olefin, which process comprises contacting a supported highly selective epoxidation catalyst comprising silver in a quantity of at most 0.17 g per m2 surface area of the support, or a precursor of the catalyst comprising the silver in cationic form, with a feed comprising oxygen at a catalyst temperature above 250° C. for a duration of up to 150 hours, and subsequently decreasing the catalyst temperature to a value of at most 250° C.Type: GrantFiled: June 26, 2003Date of Patent: February 3, 2009Assignee: Shell Oil CompanyInventors: John Robert Lockemeyer, Randall Clayton Yeates, Donald Reinalda
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Patent number: 7452844Abstract: The Fischer-Tropsch catalyst of the present invention is a transition metal-based catalyst having a high surface area, a smooth, homogeneous surface morphology, an essentially uniform distribution of cobalt throughout the support, and a small metal crystallite size. In a first embodiment, the catalyst has a surface area of from about 100 m2/g to about 250 m2/g; an essentially smooth, homogeneous surface morphology; an essentially uniform distribution of metal throughout an essentially inert support; and a metal oxide crystallite size of from about 40 ? to about 200 ?. In a second embodiment, the Fischer-Tropsch catalyst is a cobalt-based catalyst with a first precious metal promoter and a second metal promoter on an aluminum oxide support, the catalyst having from about 5 wt % to about 60 wt % cobalt; from about 0.0001 wt % to about 1 wt % of the first promoter, and from about 0.01 wt % to about 5 wt % of the second promoter.Type: GrantFiled: May 8, 2001Date of Patent: November 18, 2008Assignee: Süd-Chemie IncInventors: X. D. Hu, Patrick J. Loi, Robert J. O'Brien
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Patent number: 7429682Abstract: A catalyst for gas phase oxidation of methylbenzenes in the presence of molecular oxygen to produce corresponding aromatic aldehydes, a method for preparing the catalyst, and a method for producing aromatic aldehydes from methylbenzenes by using the catalyst. The catalyst comprises a compound represented by the following formula (1): WaXbYcOx ??(1) wherein W represents a tungsten atom, X represents one or more alkali metals selected from the group consisting of Li, Na, K, Rb, and Cs, Y represents one or more elements selected from the group consisting of Fe, Co, Ni, Cu, Mn, Re, Cr, V, Nb, Ti, Zr, Zn, Cd, Y, La, Ce, B, Al, Sn, Mg, Ca, Sr, and Ba, O stands for an oxygen atom, and the ratio of a:b:c is 12:0.001˜1:0˜5.Type: GrantFiled: November 22, 2006Date of Patent: September 30, 2008Assignee: LG Chem, Ltd.Inventors: Won Ho Lee, Hyun Kyung Yoon, Dong Il Lee, Jong Hyun Chae, Ji Hyang Son, In Kyu Park, Won Jae Lee
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Patent number: 7429366Abstract: A solution of a chromium compound is impregnated into a silica-alumina carrier made of alumina and containing 1 to 5 weight % of silica relative to the weight of the carrier, thereby to obtain a decomposing catalyst carrying 10 to 15 weight % of chromium oxide relative to the weight of the catalyst in terms of Cr2O3. By contacting mixed gas obtained through partial oxidation of heavy oil and/or coal with the decomposing catalyst, COS and HCN contained in the mixed gas are decomposed/removed. In this case, transition of alumina into boehmite can be suppressed owing to coexistence of silica and chromium oxide, so that COS and HCN can be decomposed by highly active catalytic reactions over a long time.Type: GrantFiled: October 30, 2002Date of Patent: September 30, 2008Assignees: JGC Corporation, Catalysts & Chemicals Industries Co., Ltd, Sud-Chemie Catalysts Japan, Inc.Inventors: Satomi Ishigaki, legal representative, Aya Ishigaki, legal representative, Akane Ishigaki, legal representative, Tatsuya Ishigaki, legal representative, Eiichi Hosoya, Kazutaka Egami, Shinya Ishigaki
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Patent number: 7427580Abstract: A method is described for producing a high temperature shift catalyst, not requiring a reduction step prior to use, by precipitating a composition containing divalent and trivalent iron compounds and a modifier metal selected from trivalent chromium and/or manganese compounds from an aqueous solution containing iron and modifier metal salts with a base, and forming the resultant precipitate into shaped catalyst units, without exposing said precipitate to an oxidizing atmosphere at temperatures above 200° C.Type: GrantFiled: August 22, 2002Date of Patent: September 23, 2008Assignee: Johnson Matthey PLCInventors: Andrew Mark Ward, Sean Alexander Axon, Paul John Murray
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Patent number: 7402612Abstract: This invention relates to methods for making a stabilized transition alumina of enhanced hydrothermal stability, which include the introduction of at least one structural stabilizer; a steaming step before or after the introduction step, wherein steaming is effective in transforming a transition alumina at least partially to boehmite and/or pseudoboehmite; and a calcining step to create a stabilized transition alumina. The combination of the structural stabilizer and the steaming step is believed to impart high hydrothermal stability to the alumina crystal lattice. Particularly preferred structural stabilizers include boron, cobalt, and zirconium. The stabilized transition alumina is useful as a catalyst support for high water partial pressure environments, and is particularly useful for making a catalyst having improved hydrothermal stability. The invention more specifically discloses Fischer-Tropsch catalysts and processes for the production of hydrocarbons from synthesis gas.Type: GrantFiled: October 16, 2003Date of Patent: July 22, 2008Assignee: ConocoPhillips CompanyInventors: Yaming Jin, Rafael L. Espinoza, Nithya Srinivasan, Olga P. Ionkina
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Publication number: 20080153998Abstract: Chromium catalysts may be prepared using a process including contacting a chromium catalyst precursor with a treatment agent. This catalyst may be used for polymerization of a variety of monomers, particularly olefins, to form polymers for a wide variety of applications. The catalyst exhibits desirable activity rates and polymers produced therewith may exhibit improved melt flow, polydisperity values, and changes in shear thinning as compared to those prepared under similar conditions but using the same treatment agent as a cocatalyst instead.Type: ApplicationFiled: December 20, 2006Publication date: June 26, 2008Applicant: FINA TECHNOLOGY, INC.Inventors: Ricky McCormick, David W. Knoeppel, Steven D. Gray, Tim J. Coffy
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Publication number: 20080112870Abstract: Catalysts, catalyst systems, and methods for removing ammonia and/or carbon monoxide in flue gases are provided where ammonia is used with a selective catalytic reduction catalyst for reducing oxides of nitrogen. A dual oxidation catalyst generally comprises an alkali component, a transition metal, and a metal oxide support. This catalyst is also substantially free from precious metal components and effective for substantially simultaneously oxidizing ammonia (NH3) and carbon monoxide (CO) when placed in an exhaust gas stream. The catalyst is effective to provide low ammonia to nitrogen oxides selectivity.Type: ApplicationFiled: November 15, 2006Publication date: May 15, 2008Inventors: Ahmad Moini, Gerald S. Koermer, Pascaline Harrison Tran, Jacqueline S. Curran
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Patent number: 7285514Abstract: The present invention relates to a method for preparing a catalyst for partial oxidation of acrolein, particularly to a method for preparing a catalyst for partial oxidation of acrolein that has a superior acrolein conversion rate, acrylic acid activity, selectivity, and yield, by introducing a base solution and an acid solution into a catalyst suspension prepared by dissolving salts of metal ingredients of the catalyst in water to control the acidity of the catalyst suspension, contacting the catalyst suspension of which acidity is controlled with an inert support to support the catalyst thereon, and then drying and firing the supported catalyst.Type: GrantFiled: October 24, 2003Date of Patent: October 23, 2007Assignee: LG Chem, Ltd.Inventors: Jung-Hwa Kang, Won-Ho Lee, Min-Ho Kil, Hyun-Jong Shin, Byung-Yul Choi, Yeon-Shick Yoo, Young-Hyun Choe, Ju-Yeon Park
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Patent number: 7270738Abstract: This invention relates to silico-aluminum substrates, catalysts, and the hydrocracking and hydrotreatment processes that use them. The catalyst comprises at least one hydro-dehydrogenating element that is selected from the group that is formed by elements of group VIB and group VIII of the periodic table and a non-zeolitic silica-alumina-based substrate that contains an amount of more than 5% by weight and less than or equal to 95% by weight of silica (SiO2) and has the following characteristics: A mean pore diameter, measured by mercury porosimetry, encompassed between 20 and 140 ?, a total pore volume, measured by mercury porosimetry, encompassed between 0.1 ml/g and 0.6 ml/g, a total pore volume, measured by nitrogen porosimetry, encompassed between 0.1 ml/g and 0.6 ml/g, a BET specific surface area encompassed between 100 and 550 m2/g, a pore volume, measured by mercury porosimetry, encompassed in the pores with diameters of more than 140 ?, of less than 0.Type: GrantFiled: October 30, 2003Date of Patent: September 18, 2007Assignee: Institut Francais du PetroleInventors: Patrick Euzen, Carole Bobin, Magalie Roy-Auberger, Eric Benazzi, Patrick Bourges, Christophe Gueret
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Patent number: 7271126Abstract: A method for producing a catalyst for use in the dehydrogenation of ethylbenzene to styrene is disclosed. The catalyst of the present invention comprises a high purity metal and at least one promoter in the form of solid oxides, oxide hydrates, hydroxides, hydroxycarbonates or metals. The catalyst is prepared via a method which comprises the preparation of at least one high purity iron precursor with or without an additional support material and which uses a nominal amount of water in the catalyst production. The catalyst pellets prepared with the high purity metal precursor are essentially free of sulfur and chloride contaminants.Type: GrantFiled: June 24, 2004Date of Patent: September 18, 2007Assignee: Sud-Chemie Inc.Inventors: Dennis J. Smith, Robert J. O'Brien, X. D. Hu
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Patent number: 7256154Abstract: The present invention relates to a structured catalyst for reforming of gasoline and a method of preparing the same, more particularly to a structured catalyst for reforming of gasoline for fuel-cell powered vehicles prepared by wash-coating the transition metal based reforming catalyst on the surface of the ceramic honeycomb support wash-coated with sub-micron sized alumina or its precursor to sufficiently increase the effective surface area and the performance of the catalyst and a method of preparing the same.Type: GrantFiled: April 23, 2004Date of Patent: August 14, 2007Assignee: Korea Institute of Science and TechnologyInventors: Dong Ju Moon, Jong Woo Ryu, Dong Min Kang, Byung Gwon Lee, Byoung Sung Ahn, Sang Deuk Lee
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Patent number: 7232789Abstract: The method of preparing a chromium oxide catalyst for preparation of pentafluoroethane using a chloroethane compound includes heat treating chromium hydroxide powder at a temperature not higher than 300° C. to obtain chromium oxide powder, heat treating metal hydroxide, at a temperature not higher than 300° C. to obtain metal oxide powder, mixing 85˜99.5 wt % of the chromium oxide powder with 0.5˜15 wt % of the metal oxide powder to obtain a mixture, forming the mixture into a pellet, calcining the pellet at 200-300° C. using nitrogen gas, and fluorinating the pellet at 300-320° C. using a gas mixture including N2 and HF, and then at 320-380° C. using HF gas. The fluorination catalyst prepared using the method of this invention can be effectively used to prepare pentafluoroethane at a high yield using a chloroethane compound.Type: GrantFiled: November 30, 2005Date of Patent: June 19, 2007Assignee: Ulsan Chemical Co., Ltd.Inventors: Hyang Ja Jang, Dae Hyun Kim, Cheol Ho Kim, Young Gu Cho, Jung Eun Lee, Young Su Kim, Yuichi Iikubo
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Patent number: 7229945Abstract: The present invention is for a process for making a catalyst for production of unsaturated aldehydes, such as methacrolein, by gas phase catalytic oxidation of olefins, such as isobutylene, said catalyst containing oxides of molybdenum, bismuth, iron, cesium, tungsten, cobalt, nickel, antimony, magnesium and zinc. The process is a two-part synthesis of the catalyst with the water insoluble components in one part and the water soluble components in the other part. The water insoluble components are co-precipitated to form an intermediate catalyst precursor of a precipitated support incorporating oxides of the metal components. The intermediate catalyst precursor is filtered and washed to remove nitrates. The intermediate catalyst precursor is slurried with the remaining water soluble components. A final catalyst precursor is formed by removing the water and incorporating the water soluble components. This two-part process reduces the amount of nitrates in the final catalyst precursor.Type: GrantFiled: December 19, 2003Date of Patent: June 12, 2007Assignee: Saudi Basic Industrics CorporationInventor: James W. Kauffman
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Patent number: 7214642Abstract: Methods of preparing a polymerization catalyst are provided that include contacting a support comprising alumina with a sulfating agent and with chromium. In an embodiment in which the chromium is provided from a chromium compound such as chromium oxide, the support may be calcined after loading the sulfating agent and the chromium on the support. Alternatively, the sulfating agent can be loaded on the support while calcining it. In another embodiment in which the chromium is provided from an organochromium compound, the support may be calcined after contacting it with the sulfating agent and before contacting it with the organochromium compound. Catalysts compositions formed by the foregoing method are provided. In an embodiment, catalyst compositions comprise chromium and a sulfate treated alumina support. The catalyst compositions have an activity for ethylene polymerization that is at least about 25% greater than an activity of the same catalyst without sulfate.Type: GrantFiled: April 22, 2004Date of Patent: May 8, 2007Assignee: Chevron Phillips Chemical Company LPInventors: Max P. McDaniel, Kathy S. Collins, Elizabeth A. Benham, Paul J. DesLauriers
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Patent number: 7176159Abstract: A catalyst and sorbent is disclosed which comprises pellets with an absorbent core and a protective shell with a catalyst in the shell. Such material is especially well suited for steam reforming of hydrocarbons to produce hydrogen since a reforming catalyst can be incorporated in the shell and a sorbent for the by-product carbon dioxide can be used for the core. It is also well suited for producing hydrogen from carbon monoxide by means of the water gas shift reaction. The shell can be made sufficiently strong and durable for moving bed applications as well as fixed bed applications.Type: GrantFiled: August 14, 2002Date of Patent: February 13, 2007Assignee: Iowa State University Research Foundation, Inc.Inventors: Thomas D. Wheelock, Brent H. Shanks
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Patent number: 7071371Abstract: A gel composition substantially contained within the pores of a solid material is disclosed for use as a catalyst or as a catalyst support in dehydrogenation and dehydrocyclization processes.Type: GrantFiled: November 21, 2003Date of Patent: July 4, 2006Assignee: E. I. du Pont de Nemours and CompanyInventors: Kostantinos Kourtakis, Leo E. Manzer
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Patent number: 7067454Abstract: A catalyst system for removing one or more components from a fluid stream includes a binder layer and a plurality of catalyst structures affixed to, and protruding from, the binder layer such that the catalyst structure surface is directly exposed to the fluid stream. Methods for preparing a catalyst system, and for selectively removing components from a fluid stream via a catalyst system are also disclosed.Type: GrantFiled: April 9, 2003Date of Patent: June 27, 2006Assignee: Honeywell International Inc.Inventor: Derek Raybould
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Patent number: 7060651Abstract: A silica-rich support and a catalyst containing the silica-rich support and a catalytic component. The support has a specific structure characterized by a set of claimed physicochemical properties: in the 29Si MAS NMR spectrum the state of silicon is characterized by the presence of lines with chemical shifts ?100±3 ppm (line Q3) and ?110±3 ppm (line Q4), with the ratio of the integral intensities of the lines Q3/Q4 of from 0.7 to 1.2 (FIG. 1); in the IR spectrum there is an absorption band of hydroxyl groups with the wave number 3620–3650 cm?1 and half-width 65–75 cm?1 (FIG. 2); the carrier has a specific surface area, as measured by the BET techniques from the thermal desorption of argon, SAR=0.5–30 m2/g and the surface, as measured by alkali titration techniques, SNa=10–250 m2/g, with SNa/SAr=5–30.Type: GrantFiled: December 4, 2000Date of Patent: June 13, 2006Assignee: Zakrytoe Aktsionernoe Obschestvo “Kholdingovaya Katalizatornaya Kompania”Inventors: Viktor Vladimirovich Barelko, Bair Sydypovich Balzhinimaev, Sergei Petrovich Kildyashev, Mikhail Grigorievich Makarenko, Anatoly Nikolaevich Parfenov, Ljudmila Grigorievna Simonova, Alexandr Viktorovich Toktarev
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Patent number: 7037877Abstract: The present invention provides a process for the preparation of an improved copper chromite catalyst for the hydrogenation of diethyl maleate to tetrahydrofuran with very high selectivity. This invention particularly relates to a process for the preparation of an improved copper chromite catalyst with specific composition and physical properties containing copper, chromium, zinc and aluminium as catalyst components in order to achieve selective production of tetrahydrofuran via single step hydrogenation of diethyl maleate. The calcination procedure has also been described to achieve the best activity. The catalyst has a life of more than 630 hours with constant activity. The used catalyst can also be regenerated to match the original hydrogenation activity.Type: GrantFiled: February 24, 1999Date of Patent: May 2, 2006Assignee: Council of Scientific and Industrial ResearchInventors: Raghunath Vitthal Chaudhari, Rengaswamy Jaganathan, Sopan Tukaram Chaudhari, Chandrashekhar Vasant Rode
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Patent number: 7033972Abstract: A catalyst for producing dimethyl ether which comprises alumina particles having an average size of 200 ?m or less and a methanol synthesis catalyst layer formed around the alumina particles. The methanol synthesis catalyst is in an amount of 0.05 to 5 parts by weight to 1 part by weight of the alumina particles. Dimethyl ether is produced by the method of forming a slurry by introducing the catalyst into a solvent and introducing a mixed gas comprising carbon monoxide and hydrogen into the slurry.Type: GrantFiled: September 9, 2004Date of Patent: April 25, 2006Assignee: JFE Holdings, Inc.Inventors: Tsutomu Shikada, Yotaro Ohno, Takashi Ogawa, Masatsugu Mizuguchi, Masami Ono, Kaoru Fujimoto
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Patent number: 7012038Abstract: One aspect of the invention relates to a dehydrogenation catalyst composite containing alumina, chromium oxide, lithium oxide, and sodium oxide. The invention also relates to methods of making the dehydrogenation catalyst composite. Another aspect of the invention relates to method of dehydrogenating a dehydrogenatable hydrocarbon involving contacting the dehydrogenatable hydrocarbon with a dehydrogenation catalyst composite containing alumina, chromium oxide, lithium oxide, and sodium oxide to provide a dehydrogenated hydrocarbon, such as an olefin.Type: GrantFiled: June 12, 2002Date of Patent: March 14, 2006Assignee: Engelhard CorporationInventors: Saeed Alerasool, Harold E. Manning
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Patent number: 6998366Abstract: Raney alloy catalysts applied to a support are described, said catalysts having an extremely thin layer of Raney alloy with a thickness of 0.01 to 100 ?m. These catalysts are prepared by vapor deposition of the appropriate metals under reduced pressure. They are generally suitable for all known hydrogenation and dehydrogenation reactions and are extremely abrasion-resistant.Type: GrantFiled: December 21, 2000Date of Patent: February 14, 2006Assignee: BASF AktiengesellschaftInventors: Mathias Haake, Gerhard Dörsam, Helmut Boos
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Patent number: 6984310Abstract: Alumina having a pore structure characterized by the absence of macropores, no more than 5% of the total pore volume in pores greater than 350 ?, a high pore volume (greater than 0.8 cc/g measured by mercury intrusion) and a bi-modal pore volume distribution character, where the two modes are separated by 10 to 200 ?, and the primary pore mode is larger than the median pore diameter (MPD), calculated either by volume or by surface area, the MPD by volume being itself larger than the MPD by surface area. Also provided are catalysts made from and processes using such alumina.Type: GrantFiled: December 17, 2002Date of Patent: January 10, 2006Assignee: Shell Oil CompanyInventors: Josiane M. Ginestra, Russell C. Ackerman, Christian G. Michel
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Patent number: 6919294Abstract: A method for producing a hydrorefining catalyst is used to produce the hydrorefining catalyst which contains an inorganic oxide carrier and a hydrogenation-active metal and which has such a bimodal pore characteristic that pores having pore diameters of not more than 50 nm have a pore volume of not less than 0.4 cm3/g, pores having pore diameters of not less than 50 nm have a pore volume of not less than 0.2 cm3/g, and pores having pore diameters of not less than 1000 nm have a pore volume of not more than 0.1 cm3/g. The method comprises the steps of mixing and forming a pseudo-boehmite powder having a dispersibility index of 0.13 to 0.28, and calcinating the formed pseudo-boehmite under a condition in which the pseudo-boehmite is converted into ?-alumina. The hydrorefining catalyst, which has the bimodal pore characteristic, can be produced easily at low cost.Type: GrantFiled: February 5, 2003Date of Patent: July 19, 2005Assignee: Japan Energy CorporationInventors: Toru Saito, Chikanori Nakaoka
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Patent number: 6858132Abstract: A heavy oil hydrorefining catalyst of the present invention is such that the total volume of pores with a diameter of 60 nm or less is at least 0.5 mL/g, and the pore diameter distribution has a broad band over a pore diameter range of 8 to 30 nm. The hydrorefining catalyst has excellent desulfurization characteristics and excellent demetalization characteristics, and its performance can be maintained over an extended period. When this catalyst is used in a hydrorefining apparatus equipped with a plurality of catalyst layers, the apparatus can be operated stably at a higher temperature than in the past without decreasing the desulfurization performance, and this also enhances the demetalization characteristics.Type: GrantFiled: June 7, 2001Date of Patent: February 22, 2005Assignee: Japan Energy CorporationInventors: Hideaki Kumagai, Hiroki Koyama, Kenji Nakamura, Naoharu Igarashi, Masayuki Mori, Takayuki Tsukada
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Patent number: 6825145Abstract: The present invention provides an exhaust gas purifying catalyst that is capable of substantially reducing the degree of deterioration in an exhaust gas purifying capability, which results from dissipation of an absorbent agent. Accordingly, an exhaust gas purifying catalyst, which includes a carrier and a catalyst layer, and to which at least one material selected from a group of alkali metals and alkali earth metals is added as an absorbent agent, is characterized in that acid material with a high affinity with respect to the absorbent agent is mixed in the catalyst layer so as to fix the absorbent agent, and an inhibiting layer is formed between the catalyst layer and the carrier so as to inhibit the movement of the absorbent agent toward the carrier.Type: GrantFiled: June 2, 2003Date of Patent: November 30, 2004Assignee: Mitsubishi Jidosha Kogyo Kabushiki KaishaInventors: Hiroshi Tanada, Osamu Nakayama, Keisuke Tashiro, Kinichi Iwachido, Tetsuya Watanabe, Kazuo Koga
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Patent number: 6802958Abstract: The invention pertains to a process for preparing spherical oxide particles comprising the steps of shaping a starting material comprising an oxide hydrate into particles of substantially constant length by leading the material to a set of two rolls rotating towards each other followed by leading the material to a roll equipped with grooves to form rod-type shapes, cutting the rod-type shapes into particles of substantially constant length, converting the thus formed particles into spheres, and heating the particles to convert the oxide hydrate into an oxide. The process results in particles in which there is substantially no difference in density between the core portion and the shell portion of the particles, which results in a high abrasion resistance. The particles prepared by the claimed process are particularly suitable for the preparation of hydroprocessing catalysts, more in particular for the preparation of hydroprocessing catalysts suitable for the hydroprocessing of heavy hydrocarbon feeds.Type: GrantFiled: November 13, 2000Date of Patent: October 12, 2004Assignees: Nippon Ketjen Co., Ltd., Akzo Nobel NVInventors: Nobuhito Matsumoto, Eiichi Yano, Masafumi Shimowake, Tetsuro Kamo
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Patent number: 6797850Abstract: A chromium catalyst is disclosed for use in dehydrogenation and dehydrocyclization processes.Type: GrantFiled: August 23, 2002Date of Patent: September 28, 2004Assignee: Invista North America S.a.r.l.Inventors: Kostantinos Kourtakis, Leo E. Manzer
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Publication number: 20040116760Abstract: A gel composition substantially contained within the pores of a solid material is disclosed for use as a catalyst or as a catalyst support in dehydrogenation and dehydrocyclization processes.Type: ApplicationFiled: November 21, 2003Publication date: June 17, 2004Inventors: Kostantinos Kourtakis, Leo Ernest Manzer
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Patent number: 6706660Abstract: A lean NOx catalyst and method of preparing the same is disclosed. The lean NOx catalyst includes a ceramic substrate, an oxide support material, preferably &ggr;-alumina, deposited on the substrate and a metal promoter or dopant introduced into the oxide support material. The metal promoters or dopants are selected from the group consisting of indium, gallium, tin, silver, germanium, gold, nickel, cobalt, copper, iron, manganese, molybdenum, chromium, cerium, vanadium, oxides thereof, and combinations thereof. The &ggr;-alumina preferably has a pore volume of from about 0.5 to about 2.0 cc/g; a surface area of between about 80 to 350 m2/g; an average pore size diameter of between about 3 to 30 nm; and an impurity level of less than or equal to 0.2 weight percent. In a preferred embodiment the &ggr;-alumina is prepared by a sol-gel method, with the metal doping of the &ggr;-alumina preferably accomplished using an incipient wetness impregnation technique.Type: GrantFiled: December 18, 2001Date of Patent: March 16, 2004Assignee: Caterpillar IncInventor: Paul W. Park