And Rare Earth Metal (sc, Y Or Lanthanide)containing Patents (Class 502/65)
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Patent number: 7455718Abstract: The present invention relates generally to zeolites having a silica/alumina ratio of less than or equal to 10 (Si/Al?10) that are exchanged with Ag+ and thermally treated in such a way to favor adsorption over alternative catalytic and chemically reactive functionalities. The adsorbents of the present invention and the method of producing such adsorbents maximize the working adsorption capacity through ?-complexation. Applications for such adsorbents include any process in which contaminants from gas streams can form ?-complexes with the Ag in the zeolite, particularly the removal of CO, ethylene, propylene and the like from air and CO/H2 from air in prepurifier adsorbers in the production of ultra high purity (UHP) N2.Type: GrantFiled: June 30, 2005Date of Patent: November 25, 2008Assignee: Praxair Technology, Inc.Inventors: Mark William Ackley, Philip A. Barrett
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Patent number: 7452839Abstract: The sulfur content of liquid cracking products, especially the cracked gasoline, of the catalytic cracking process is reduced by the use of a sulfur reduction catalyst composition comprising a porous molecular sieve which contains a metal in an oxidation state above zero within the interior of the pore structure of the sieve as well as a rare earth component which enhances the cracking activity of the cracking catalyst. The molecular sieve is normally a faujasite such as USY. The primary sulfur reduction component is normally a metal of Period 3 of the Periodic Table, preferably vanadium. The rare earth component preferably includes cerium which enhances the sulfur reduction activity of the catalyst. The sulfur reduction catalyst may be used in the form of a separate particle additive or as a component of an integrated cracking/sulfur reduction catalyst.Type: GrantFiled: December 16, 2004Date of Patent: November 18, 2008Assignee: W. R. Grace & Co.-Conn.Inventors: Wu-Cheng Cheng, Terry G. Roberie, Hye Kyung Cho Timken, Scott Kevin Purnell, Xinjin Zhao
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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: 7449169Abstract: The present invention refers to a microporous crystalline material of zeolitic nature (ITQ-22) which, in the calcined state, has the empirical formula x(M1/nX02):yYO2:zR:wH20 wherein M is H+ or at least one inorganic cation of charge +n; X is at least one chemical element of oxidation state +3, preferably selected from the group consisting of Al, Ga, B, Fe and Cr; Y is at least one chemical element with oxidation state +4 other than Si and Ge, preferably selected from the group consisting of Ti, Sn and V; x has a value less than 0.2, preferably less than 0.1 and can take the value zero, y has a value less than 0.1, preferably less than 0.05 and can take the value zero, z has a value less than 0.8, preferably between 0.005 and 0.5 and can take the value zero, with a characteristic X-ray diffraction pattern, to the method of preparation and to the use of the material in separation and transformation processes of organic compounds.Type: GrantFiled: November 23, 2004Date of Patent: November 11, 2008Assignees: Consejo Superior de Investigaciones Cientificas, Universidad Politecnica de ValenciaInventors: Avelino Corma Canós, Fernando Rey García, Susana Valencia Valencia, Luis Joaquín Martinez Triguero
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Publication number: 20080274876Abstract: A Selective Catalytic Reduction (SCR) catalyst was prepared by slurry coating ZSM-5 zeolite onto a cordierite monolith, then subliming an iron salt onto the zeolite, calcining the monolith, and then dipping the monolith either into an aqueous solution of manganese nitrate and cerium nitrate and then calcining, or by similar treatment with separate solutions of manganese nitrate and cerium nitrate. The supported catalyst containing iron, manganese, and cerium showed 80 percent conversion at 113 degrees Celsius of a feed gas containing nitrogen oxides having 4 parts NO to one part NO2, about one equivalent ammonia, and excess oxygen; conversion improved to 94 percent at 147 degrees Celsius. N2O was not detected (detection limit: 0.6 percent N2O).Type: ApplicationFiled: April 7, 2008Publication date: November 6, 2008Inventor: Kevin C. Ott
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Patent number: 7446070Abstract: An exhaust gas-purifying catalyst includes a zeolite and a perovskite composite oxide containing palladium placed at its B site.Type: GrantFiled: September 27, 2006Date of Patent: November 4, 2008Assignees: Cataler Corporation, Daihatsu Motor Co., Ltd.Inventors: Asuka Hori, Keiichi Narita, Yasunori Sato, Hirohisa Tanaka, Ichiro Takahashi, Nobuhiko Kajita
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Publication number: 20080261802Abstract: The present invention provides a cracking catalyst, containing a rare-earth Y-zeolite and a support, which is characterized in that the rare-earth content in crystal lattice of the rare-earth Y-zeolite is 4-15 wt % of RE2O3; the original unit cell size is 2.440-2.465 nm; the equilibrium unit cell size of the catalyst after 100% stream-aging at 800° C. for 17 hours is larger than 2.435 nm; the rare-earth atom content in the support is 1.0-8.0 wt % of the support. The present invention also relates to a preparation process for the same catalyst.Type: ApplicationFiled: March 31, 2006Publication date: October 23, 2008Applicants: China Petroleum & Chemical Corporation, Research Institute of Petroleum Processing SinopecInventors: Jun Du, Zheng Li, Jun Long, Mingde Xu, Zhijian Da, Huiping Tian, Mingyuan He
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Catalysts For Co Oxidation,Voc Combustion And Nox Reduction And Methods Of Making And Using The Same
Publication number: 20080233039Abstract: The present invention is directed to carbon monoxide oxidation reactions in the presence of an O2 containing gas, nitrogen oxide conversion reactions, volatile organic compound conversion reactions in the presence of an O2 containing gas, and combinations thereof, and catalysts for use in those reactions. The catalyst comprises cobalt, its oxides or mixtures thereof and ruthenium, its oxides or mixtures thereof.Type: ApplicationFiled: June 1, 2006Publication date: September 25, 2008Applicant: SYMYX TECHNOLOGIES, INC.Inventors: Alfred Hagemeyer, Anthony F. Volpe, Valery Sokolovskii, Andreas Lesik, Guido Streukens -
Publication number: 20080227628Abstract: Disclosed herein are mesoporous material derived from a parent zeolite. In an embodiment of the invention, the mesoporous material derived from a parent zeolite, has an internal volume greater than about 0.35 cc/g and a surface area greater than about 250 m2/g, the mesoporous material comprises micropores having a surface area and mesopores, wherein the surface area of the micropores in the mesoporous material is less than about 25% of that in the parent zeolite, wherein less than about 3% of the internal volume of the mesoporous material is provided by micropores and wherein the mesopores are essentially homogeneously distributed and form an essentially interconnected network. In another embodiment of the invention, the mesoporous material derived from an alumina-rich parent zeolite has an internal volume greater than about 0.Type: ApplicationFiled: October 12, 2006Publication date: September 18, 2008Inventor: Raymond Le Van Mao
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Patent number: 7419930Abstract: The present invention regards a catalytic composition comprising gallium, at least one element chosen in the group of the lanthanides, and a zeolite belonging to the MFI, MEL or MFI/MEL families, the crystal lattice of which is made up of silicon oxide and at least one metal oxide chosen from among aluminum oxide, boron oxide and gallium oxide. Preferably, in the catalytic compositions of the present invention a zeolite is used belonging to the MFI family characterized by crystallites which for at least 90% have diameters smaller than 500 ? and which can form agglomerates of submicron dimensions characterized by possessing at least 30% of the extrazeolitic porosity in the region of the mesopores. The catalytic compositions of the present invention can, in addition, contain rhenium. These catalytic compositions are useful in processes of aromatization of hydrocarbons containing from 3 to 6 carbon atoms, preferably, hydrocarbon mixtures containing olefins.Type: GrantFiled: October 24, 2006Date of Patent: September 2, 2008Assignees: Eni S.p.A., Enichem S.p.A., Enitecnologie S.p.A.Inventors: Angela Carati, Marco Tagliabue, Carlo Perego, Roberto Millini, Stefano Amarilli, Giuseppe Terzoni
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Patent number: 7407907Abstract: A catalyst for selectively opening cyclic paraffins has been developed. The catalyst comprises a Group VIII metal, such as platinum, a modifier component, such as niobium or ytterbium, a molecular sieve, such as UZM-16 and a refractory inorganic oxide such as alumina. The Group VIII metal and modifier component are preferably deposited on the refractory inorganic oxide. A process for using the catalyst is also disclosed.Type: GrantFiled: August 25, 2006Date of Patent: August 5, 2008Assignee: UOP LLCInventors: Leonid B. Galperin, Irina Galperin, legal representative, Michael J. McCall, Joseph A. Kocal
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Patent number: 7405177Abstract: A catalyst and process for opening aliphatic cyclic hydrocarbons have been developed. The catalyst comprises a catalytic metal component, a molecular sieve and refractory inorganic oxide component. The molecular sieve is selected from the group consisting of MAPSOs, SAPOs, UZM-8, UZM-8HS, UZM-15, UZM-15HS, UZM-16, UZM-16HS and mixtures thereof. Preferred catalytic metals include platinum, palladium and rhodium. The catalyst may also contain a modifier such as niobium, titanium, or rare earth metals.Type: GrantFiled: November 8, 2005Date of Patent: July 29, 2008Assignee: UOP LLCInventors: Irina Galperin, legal representative, Deng-Yang Jan, Michael J. McCall, Joseph A. Kocal, Leonid B. Galperin
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Publication number: 20080166282Abstract: A catalyst and a method for selectively reducing nitrogen oxides with ammonia are provided. The catalyst includes a first component of copper, chromium, cobalt, nickel, manganese, iron, niobium, or mixtures thereof, a second component of cerium, a lanthanide, a mixture of lanthanides, or mixtures thereof, and a zeolite. The catalyst may also include strontium as an additional second component. The catalyst selectively reduces nitrogen oxides to nitrogen with ammonia at low temperatures. The catalyst has high hydrothermal stability. The catalyst has high activity for conversion of nitrogen oxides in exhaust streams, and are not significantly influenced by the NO/NO2 ratio. The catalyst and the method may have special application to selective reduction of nitrogen oxides in exhaust gas from diesel vehicles, although the catalyst and the method have broad application to a wide range of gas streams that contain nitrogen oxides.Type: ApplicationFiled: January 9, 2007Publication date: July 10, 2008Inventors: Stephen J. Golden, Svetlana Iretskaya
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Publication number: 20080156698Abstract: The invention is a composition that is suitable for reducing sulfur species from products produced by petroleum refining processes, especially gasoline products produced by fluidized catalytic cracking (FCC) processes. The composition comprises zeolite, yttrium, and at least one element selected from the group consisting of zinc, magnesium and manganese, wherein the yttrium and element are present as cations. The yttrium and zinc are preferably present as cations that have been exchanged onto the zeolite. The zeolite is preferably a zeolite Y.Type: ApplicationFiled: February 24, 2006Publication date: July 3, 2008Inventors: Ruizhong Hu, Richard Franklin Wormsbecher
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Patent number: 7390763Abstract: The invention is directed to a method of making a small crystal SSZ-32 zeolite, known as SSZ-32X. The catalyst is suitable for use in a process whereby a feed including straight chain and slightly branched paraffins having 10 or more carbon atoms is dewaxed to produce an isomerized product, with increased yield of isomerized material and decreased production of light ends.Type: GrantFiled: October 31, 2003Date of Patent: June 24, 2008Assignee: Chevron U.S.A. Inc.Inventors: Stacey I. Zones, Guang Zhang, Kamala R. Krishna, Joseph A. Biscardi, Paul Marcantonio, Euthimios Vittoratos
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Patent number: 7381675Abstract: A catalyst comprising a noble metal supported on a diatomaceous earth and a transition metal zeolite is disclosed. The catalyst is used in an epoxidation process comprising reacting an olefin, hydrogen, and oxygen. The diatomaceous earth is readily available and may be used in a slurry process without further particle size enlargement.Type: GrantFiled: December 19, 2006Date of Patent: June 3, 2008Assignee: Lyondell Chemical Technology, L.P.Inventors: Jude T. Ruszkay, Roger A. Grey
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Patent number: 7329624Abstract: An adsorbent for removal of impurities from silicone based solvents is presented. The adsorbent is regenerable for repeated use in cleaning silicone based solvents.Type: GrantFiled: May 17, 2005Date of Patent: February 12, 2008Assignee: UOP LLCInventors: Laszlo T. Nemeth, Anil R. Oroskar, Santi Kulprathipanja, Rusty M. Pittman
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Process for the preparation of molecular sieve adsorbent for selective adsorption of oxygen from air
Patent number: 7319082Abstract: The invention relates to the manufacture of molecular sieve adsorbents, which are selective towards oxygen from its gaseous mixture with argon and/or nitrogen. More particularly, this invention relates to the manufacture of molecular sieve adsorbents useful for the separation of oxygen-argon gaseous mixture. More specifically, the invention relates to the manufacture and use of a molecular sieve adsorbent by cation exchange in zeolites by rare earth cations to obtain oxygen selective adsorbent from its gaseous mixture with nitrogen and argon at ambient conditions of temperature and pressure. Thus prepared adsorbent is useful for the separation and purification of nitrogen and argon from its mixture with oxygen.Type: GrantFiled: October 27, 2003Date of Patent: January 15, 2008Assignee: Council of Scientific and Industrial ResearchInventors: Raksh Vir Jasra, Chintansinh Dharmendrasinh Chudasama -
Patent number: 7304011Abstract: Compositions for reduction of NOx generated during a catalytic cracking process, preferably, a fluid catalytic cracking process, are disclosed. The compositions comprise a fluid catalytic cracking catalyst composition, preferably containing a Y-type zeolite, and a particulate NOx composition containing particles of a zeolite having a pore size ranging from about 3 to about 7.2 Angstoms and a SiO2 to Al2O3 molar ratio of less than about 500. Preferably, the NOx reduction composition contains NOx reduction zeolite particles bound with an inorganic binder. In the alternative, the NOx reduction zeolite particles are incorporated into the cracking catalyst as an integral component of the catalyst. Compositions in accordance with the invention are very effective for the reduction of NOx emissions released from the regenerator of a fluid catalytic cracking unit operating under FCC process conditions without a substantial change in conversion or yield of cracked products, e.g., gasoline and light olefins.Type: GrantFiled: April 15, 2004Date of Patent: December 4, 2007Assignee: W.R. Grace & Co. -Conn.Inventors: George Yaluris, Michael Scott Ziebarth, Xinjin Zhao
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Publication number: 20070238606Abstract: Disclosed herein is an exhaust gas purifying catalyst composition for reducing hydrogen sulfide, including active alumina, supporting platinum and/or palladium, along with rhodium; a metal selected from the group consisting of Ba, La, Pr and Zr; cerium oxides; and zeolite.Type: ApplicationFiled: March 9, 2007Publication date: October 11, 2007Inventors: Hyun-Sik Han, Jin-Woo Song, Jae-Au Ha
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Patent number: 7279036Abstract: The present invention provides a novel process for preparation of inorganic colourants from mixed rare earth compounds, which are directly obtained from the ore industry, without undergoing any separation, thereby enabling a cost reduction to the extend of 10-100 times. Colors ranging from brown, blue and green can be obtained by suitable doping with other metal ions.Type: GrantFiled: December 23, 2004Date of Patent: October 9, 2007Assignee: Council of Scientific and Industrial ResearchInventors: Janardhanan Sreeram Kalarical, Balachandran Unni Nair, Ramasami Thirumalachari
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Patent number: 7265073Abstract: An exhaust gas purifying catalyst formed by having a first rhodium-containing catalyst layer, a second zeolite-containing catalyst layer, and a third palladium-containing catalyst layer superposed sequentially on a carrier, and a process for purifying the exhaust gas from an internal combustion engine by using the catalyst. A catalyst possessing durability and excelling in the ability to adsorb hydrocarbon, the ability to purify, and the three-way performance is provided.Type: GrantFiled: April 15, 2004Date of Patent: September 4, 2007Assignees: ICT Co., Ltd., International Catalyst Technology, Inc.Inventor: Tatsuya Yoshikawa
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Patent number: 7220692Abstract: A two phase catalyst is disclosed with one or more transition metals such as Cu, Co, Fe, Ag and Mo supported on a molecular sieve having a pore size not greater than 8 ? along with a stabilizing oxide of one or more of the oxides of Zr, Mo, V, Nb or the rare earths coating the molecular sieve. A method of preparing the two phase catalyst and using same to remediate NOx in combustion gases is also described.Type: GrantFiled: March 7, 2003Date of Patent: May 22, 2007Assignee: UChicago Argonne, LLCInventors: Christopher L. Marshall, Michael K. Neylon
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Patent number: 7208442Abstract: The invention relates to a catalyst composition, a method of making the same and its use in the conversion of a feedstock, preferably an oxygenated feedstock, into one or more olefin(s), preferably ethylene and/or propylene The catalyst composition comprises a molecular sieve and at least one metal oxide, such as a magnesium oxide that, when saturated with acetone and contacted with said acetone for 1 hour at 25° C., converts more than 80% of the acetone.Type: GrantFiled: February 10, 2003Date of Patent: April 24, 2007Assignee: ExxonMobil Chemical Patents Inc.Inventors: Teng Xu, Stephen N. Vaughn, Richard B. Hall, Doron Levin, James Clark Vartuli
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Patent number: 7183236Abstract: An object of the present invention is to realize low pressure loss and high purification performance in a constitution in which a primary catalyst component and co-catalyst component are loaded onto a ceramic support that allows catalyst components to be loaded directly. According to the present invention, a primary catalyst component in the form of a catalyst precious metal and a co-catalyst component in the form of an oxygen occluding component are loaded on the surface of a honeycomb-shaped ceramic support, including the inner surfaces of pores. As a result of the large loaded amount of co-catalyst component entering inside the pores, the loaded amount of co-catalyst component on the cell wall surfaces is reduced, thereby making it possible to inhibit increases in pressure loss. In addition, since the primary catalyst component and co-catalyst component are in close proximity to each other, catalyst performance is improved.Type: GrantFiled: August 5, 2003Date of Patent: February 27, 2007Assignee: Denso CorporationInventors: Tomomi Hase, Tomohiko Nakanishi, Hideaki Ueno, Takatoshi Shinyoshi
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Patent number: 7119042Abstract: Provided is a catalyst composition for the isomerization of n-paraffin which comprises a ?-zeolite having been synthesized according to a dry gel process and contains cerium, the ?-zeolite being characterized in that it has an average particle diameter of 0.01˜0.1 ?m and the proportion of the cerium in the ?-zeolite is within the range of 0.001˜0.2 in terms of the atomic ratio of the silicon atom in the ?-zeolite to the cerium atom, i.e. [Ce]/[Si] as well as a process for isomerizing n-paraffin which comprises bringing n-paraffin into contact with the catalyst composition as set forth above.Type: GrantFiled: March 10, 2004Date of Patent: October 10, 2006Assignee: Gifu UniversityInventors: Yoshihiro Sugi, Yoshihiro Kubota, Yoichi Nishimura, Puspa Ratu
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Patent number: 7094722Abstract: The activity and durability of a zeolite lean-bum NOx catalyst can be increased by loading metal cations on the outer surface of the zeolite. However, the metal loadings can also oxidize sulfur dioxide to cause sulfate formation in the exhaust. The present invention is a method of suppressing sulfate formation in an exhaust purification system including a NOx catalyst. The NOx catalyst includes a zeolite loaded with at least one metal. The metal is selected from among an alkali metal, an alkaline earth metal, a lanthanide metal, a noble metal, and a transition metal. In order to suppress sulfate formation, at least a portion of the loaded metal is complexed with at least one of sulfate, phosphate, and carbonate.Type: GrantFiled: December 20, 2002Date of Patent: August 22, 2006Assignee: Caterpillar Inc.Inventors: Mari Lou Balmer-Millar, Paul W. Park, Alexander G. Panov
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Patent number: 7084086Abstract: A catalyst for purifying exhaust gases exhibits not only effective purifying characteristics even in a low temperature range such as immediately after an engine starts but also high exhaust gas purifying ability. In the catalyst for purifying exhaust gases of a first aspect of the invention, HC adsorbed at low temperature are released at high temperature and the released HC are purified by a catalyst metal. This catalyst for purifying exhaust gases has an excellent advantage in purifying HC at low temperature as well as excellent exhaust gas purifying ability.Type: GrantFiled: August 21, 2003Date of Patent: August 1, 2006Assignee: Cataler CorporationInventors: Koichi Kasahara, Yasunori Sato, Kenichi Taki
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Patent number: 7074739Abstract: The invention relates to a process for producing alkylated aromatic hydrocarbons, preferably with an oxygen or sulfur containing alkylating agent, in the presence of a multi-component molecular sieve catalyst composition that includes a molecular sieve and an active metal oxide. The invention is also directed to methods of making and formulating the multi-component molecular sieve catalyst composition useful in producing alkylated aromatics.Type: GrantFiled: November 19, 2002Date of Patent: July 11, 2006Assignee: ExxonMobil Chemical Patents Inc.Inventors: Jihad Mohammed Dakka, James Clarke Vartuli, John Scott Buchanan, Jose G. Santiesteban, Doron Levin
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Patent number: 7067449Abstract: A Y-zeolite-containing composite material made from materials comprising kaolin by in-situ crystallization, said composite material comprises nest-like structure. Content of Y-zeolite is in the range of 30–85% by weight of said composite material. The nest-like structure is essentially comprised of rodlike crystal, further comprises flaky crystal or blocky crystal. Y-zeolite in the composite material may be HY, REY, or REHY. Said composite material is suitable to be used as catalysts for catalytic cracking of heavy oil or resid. The invention further relates to a process for preparing the composite material.Type: GrantFiled: March 26, 2004Date of Patent: June 27, 2006Assignee: China Petroleum & Chemical CorporationInventors: Jihong Zhou, Enze Min, Haiying Yang, Baoning Zong
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Patent number: 7026263Abstract: Provided herein are hybrid catalysts that are used in the deep catalytic cracking of petroleum naphthas or other hydrocarbon feedstocks, for the selective production of light olefins, in particular ethylene and propylene and BTX aromatics. The hybrid catalysts of this invention contain a chemically treated microporous crystalline silicate such as the pentasil-type silicalite, a mesoporous silica-alumina or zirconium oxide co-catalyst, into which may be incorporated aluminum oxide, molybdenum oxide, lanthanum oxide, cerium oxide or a mixture of aluminum and molybdenum oxides, and an inorganic binder such as bentonite clay.Type: GrantFiled: January 28, 2003Date of Patent: April 11, 2006Assignee: Valorbec, Société en commanditeInventor: Raymond Le Van Mao
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Patent number: 6991774Abstract: The present invention discloses a high stability rare earth zeolite Y with high rare earth and the preparation process thereof, which zeolite has a content of rare earth of 4–15 wt %, a unit cell constant of 2.450–2.458 nm, a differential thermal collapsed temperature of 1000–1056° C., a silica to alumina ratio of 8.3–8.8, and a content of sodium oxide less than 1.0 wt %. Said zeolite is prepared by drying a rare earth-containing zeolite Y, introducing gaseous silicon tetrachloride carried by dry air and reacting at a temperature of 150–600° C. for 10 min to 6 h, then purging with dry air and washing with de-cationized water to remove the soluble by-products. The rare earth zeolite Y possesses high activity and selectivity for cracking the heavy oils, high activity for hydrogen transfer, has good coke selectivity, can effectively increase the yield of light oils, and improve the quality of gasoline and thus can directly serve as an active component for preparing various hydrocarbon cracking catalysts.Type: GrantFiled: March 30, 2004Date of Patent: January 31, 2006Assignees: China Petroleum & Chemical Corporation, Research Institute of Petroleum ProcessingInventors: Jun Du, Zheng Li, Zhijian Da, Mingyuan He
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Patent number: 6974787Abstract: The sulfur content of liquid cracking products, especially the cracked gasoline, of the catalytic cracking process is reduced by the use of a sulfur reduction catalyst composition comprising a porous molecular sieve which contains a metal in an oxidation state above zero within the interior of the pore structure of the sieve as well as a cerium component which enhances the stability and sulfur reduction activity of the catalyst. The molecular sieve is normally a faujasite such as USY. The primary sulfur reduction component is normally a metal of Period 3 of the Periodic Table, preferably vanadium. The sulfur reduction catalyst may be used in the form of a separate particle additive or as a component of an integrated cracking/sulfur reduction catalyst.Type: GrantFiled: December 21, 1999Date of Patent: December 13, 2005Assignees: ExxonMobil Corporation, W. R. Grace & Co.-Conn.Inventors: Arthur W. Chester, Terry G. Roberie, Hye Kyung C. Timken, Michael S. Ziebarth
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Patent number: 6953769Abstract: A catalyst comprises an HC trapping material that is capable of trapping HC in an exhaust gas under low temperatures and releasing HC with a raise in temperature and catalytic material containing a Ce—Pr double oxide capable of oxidizing and purifying HC from the HC trapping material with a high efficiency.Type: GrantFiled: March 25, 2002Date of Patent: October 11, 2005Assignee: Mazda Motor CorporationInventors: Hiroshi Yamada, Seiji Miyoshi, Akihide Takami, Kenji Okamoto, Masahiko Shigetsu, Hisaya Kawabata
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Patent number: 6943132Abstract: Zeolite microsphere FCC catalysts having a novel morphology comprising a macroporous matrix and crystallized zeolite freely coating the walls of the pores of the matrix. The catalysts are formed from microspheres containing a metakaolin and kaolin calcined through its exotherm, the latter calcined kaolin being derived from a kaolin having a high pore volume. Kaolin having a high pore volume can be a pulverized ultrafine kaolin or a kaolin which has been pulverized to have an incipient slurry point less than 57% solids.Type: GrantFiled: May 27, 2003Date of Patent: September 13, 2005Assignee: Engelhard CorporationInventors: David M. Stockwell, Randall P. Brown, Stephen H. Brown
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Patent number: 6942783Abstract: A fluid catalytic cracking catalyst is provided with a high porosity by in-situ crystallizing an aluminosilicate zeolite from a reactive microsphere comprising metakaolin and hydrous kaolin. Any calcination of the reactive microsphere before reaction with a zeolite-forming solution is done at low temperatures so as to ensure the hydrous kaolin is not converted to metakaolin.Type: GrantFiled: May 19, 2003Date of Patent: September 13, 2005Assignee: Engelhard CorporationInventors: Mingting Xu, David Matheson Stockwell
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Patent number: 6942784Abstract: Zeolite microsphere FCC catalysts having a novel morphology comprising a porous matrix and crystallized zeolite freely coating the walls of the pores of the matrix. The catalysts are formed from microspheres containing a metakaolin and an alumina source other than kaolin having a high pore volume.Type: GrantFiled: February 3, 2004Date of Patent: September 13, 2005Assignee: Engelhard CorporationInventors: David M. Stockwell, Stephen H. Brown, Ji-Yong Ryu
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Patent number: 6914026Abstract: The present invention is directed to an iron-promoted zeolite beta catalyst useful in the selective catalytic reduction of nitrogen oxides with ammonia in which the iron-promoted zeolite beta is treated so as to provide increased amounts of the iron promoter in the form of Fe(OH). The stabilized zeolite is formed by cation exchange of an iron salt into a zeolite beta which has a reduced sodium content such as by exchanging a sodium beta with ammonium or hydrogen cations. A zeolite beta having a reduced carbon content and a Si/Al ratio of no more than 10 also increases the Fe(OH) content of the iron-promoted catalyst. The iron-promoted catalyst which has the iron in the form of Fe(OH) is characterized by a peak at 3680±5 cm?1 in the IR spectra.Type: GrantFiled: September 7, 2001Date of Patent: July 5, 2005Assignee: Engelhard CorporationInventors: Pascaline H. Tran, Xinsheng Liu, James M. Chen
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Patent number: 6908874Abstract: A process for making a catalytic rare earth metal oxide-coated microporous particulate material that has the rare earth metal oxide coated on outer surfaces of the microporous particulate material. The process comprises the steps of: i) combining an amount of a colloidal dispersion of rare earth metal oxide hydrate with a compatible microporous particulate material to form a slurry, the microporous particulate material having an average pore size less than the particle size of the colloidal dispersion, to position thereby, the colloidal dispersion on the outer surfaces of the microporous particulate material; and ii) heat treating the slurry to fix the rare earth metal oxide to the outer surfaces of the microporous particulate material.Type: GrantFiled: September 13, 2002Date of Patent: June 21, 2005Assignees: Rothmans, Benson & Hedges Inc., AMR International Corp.Inventors: James L. Woodhead, Stanislav M. Snaidr
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Patent number: 6887444Abstract: An exhaust gas purifying catalyst for purifying exhaust gas discharged from an automotive internal combustion engine. The exhaust gas purifying catalyst comprises a monolithic substrate. A HC adsorbing layer for adsorbing hydrocarbons (HC) is formed on the monolithic substrate. The HC absorbing layer contains zeolite. A catalytic layer for producing hydrogen (H2) and reducing NOx is formed on the HC adsorbing layer. The catalytic layer functions to produce hydrogen (H2) from at least one of hydrocarbons and carbon monoxide (CO) and to reduce nitrogen oxides (NOx) with the produced hydrogen and at least one of hydrocarbons and carbon monoxide in exhaust gas.Type: GrantFiled: November 21, 2000Date of Patent: May 3, 2005Assignee: Nissan Motor Co., Ltd.Inventor: Shinji Yamamoto
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Patent number: 6884744Abstract: A catalyst useful in cracking of hydrocarbon feedstock comprising particulate material composed of at least 70 weight percent zeolite and the remainder substantially composed of silica sol, alumina sol or mixtures thereof; wherein the particulate material has a kinetic conversion activity of at least about 3; and compositions for fluid catalytic cracking of petroleum feedstock comprising said catalyst and a second particulate material having a kinetic conversion activity of less than 3 wherein said catalyst composition having a kinetic conversion activity of at least about 2.Type: GrantFiled: April 13, 2001Date of Patent: April 26, 2005Assignee: W. R. Grace & Co.-Conn.Inventors: Wu-Cheng Cheng, Philip S. Deitz, Xinjin Zhao
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Process for preparing sodium silicate alkali solution depleted of sodium salt and enriched in silica
Patent number: 6864202Abstract: The present invention relates to an improved process for obtaining sodium silicate alkali solution depleted of sodium salt and enriched in silica from a mother liquor recovered after isolation of molecular sieves and more particularly, the present invention relates to a process for recycling mother liquor obtained after the isolation of molecular sieves for the preparation of fresh molecular sieves or as a binder for producing Fluid Catalytic Cracking (FCC) catalyst.Type: GrantFiled: October 29, 2002Date of Patent: March 8, 2005Assignee: Indian Oil Corporation LimitedInventors: Biswanath Sarkar, Ram Mohan Thakur, Nagesh Samant, Mohan Kuvettu Prabhu, Ravichandran Gopal, Mitra Bhanu Patel, Sanjay Kumar Ray, Krishnan Venkatachalam, Satish Makhija, Sobhan Ghosh -
Patent number: 6858556Abstract: A process for the preparation of a stabilized dual zeolite catalyst-comprising two types of zeolites, a low silica molecular sieve and a stabilized high silica zeolite is disclosed. The catalyst is useful for cracking heavier hydrocarbons into lighter useful products.Type: GrantFiled: February 25, 2002Date of Patent: February 22, 2005Assignee: Indian Oil Corporation LimitedInventors: Mohan Prabhu Kuvettu, Sanjay Kumar Ray, Gopal Ravichandran, Venkatchalam Krishnan, Satyen Kumar Das, Satish Makhija, Sobhan Ghosh
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Publication number: 20040236165Abstract: The present invention regards a catalytic composition comprising gallium, at least one element chosen in the group of the lanthanides, and a zeolite belonging to the MFI, MEL or MFI/MEL families, the crystal lattice of which is made up of silicon oxide and at least one metal oxide chosen from among aluminium oxide, boron oxide and gallium oxide. Preferably, in the catalytic compositions of the present invention a zeolite is used belonging to the MFI family characterized by crystallites which for at least 90% have diameters smaller than 500 Å and which can form agglomerates of submicron dimensions characterized by possessing at least 30% of the extrazeolitic porosity in the region of the mesopores.Type: ApplicationFiled: February 13, 2004Publication date: November 25, 2004Applicants: ENI S.p.A., ENICHEM S.p.A, ENITECHNOLOGIE S.p.A.Inventors: Angela Carati, Marco Tagliabue, Carlo Perego, Roberto Millini, Stefano Amarilli, Giuseppe Terzoni
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Publication number: 20040209760Abstract: An exhaust gas purifying catalyst characterized by having zeolite subjected to ion exchange with cerium and deposited on cerium oxide as well and containing platinum and/or palladium, and a process for purifying the exhaust gas using the catalyst. The catalyst, by using zeolite and a noble metal, is enabled to acquire improved durability.Type: ApplicationFiled: April 15, 2004Publication date: October 21, 2004Applicants: ICT CO., LTD., INTERNATIONAL CATALYST TECHNOLOGY, INC.Inventor: Tatsuya Yoshikawa
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Patent number: 6767855Abstract: A catalyst for purifying exhaust gases, which enables the HC-purification performance to be further improved by suitably arranging an HC-adsorbent. The catalyst includes a coating layer which is composed of alumina and zeolite, and carries a noble metal. The weight ratio of alumina and zeolite in the coating layer ranges from 5:1 to 1:1. Zeolite adsorbs HC when exhaust gases are in a low temperature region, and HC desorbed from zeolite is oxidized and purified with the noble metal.Type: GrantFiled: January 31, 2002Date of Patent: July 27, 2004Assignee: Cataler CorporationInventors: Koichi Kasahara, Yasunori Sato, Kenichi Taki
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Patent number: 6756337Abstract: A purification catalyst for exhaust gas has high purification performance for the exhaust gas even under a high oxygen concentration atmosphere. The purification catalyst for exhaust gas contains cerium oxide, zeolite carrying Pt, and tin or a tin oxide.Type: GrantFiled: November 6, 2002Date of Patent: June 29, 2004Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Yoshiyuki Nakanishi, Yuichi Matsuo, Kazuhide Terada
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Patent number: 6756336Abstract: A catalyst for purifying exhaust gases exhibits not only effective purifying characteristics even in a low temperature range such as immediately after an engine starts but also high exhaust gas purifying ability. In the catalyst for purifying exhaust gases of a first aspect of the invention, HC adsorbed at low temperature are released at high temperature and the released HC are purified by a catalyst metal. This catalyst for purifying exhaust gases has an excellent advantage in purifying HC at low temperature as well as excellent exhaust gas purifying ability.Type: GrantFiled: February 1, 2002Date of Patent: June 29, 2004Assignee: Cataler CorporationInventors: Koichi Kasahara, Yasunori Sato, Kenichi Taki
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Patent number: 6716338Abstract: A fluid catalytic cracking catalyst made from microspheres that initially contain kaolin, a dispersible boehmite alumina and a sodium silicate or silica sol binder. The kaolin portion contains hydrous kaolin and optionally spinel, or mullite, or both spinel and mullite made via kaolin which has been calcined through its characteristic exotherm. Calcination of the hydrous clay to metakaolin and formation of in-situ zeolite by treatment with sodium silicate yields a catalyst containing Y-faujasite and transforms the dispersible boehmite into a transitional alumina. The catalyst can be used to crack resid or resid-containing feeds as the alumina phase formed from the dispersible boehmite passivates nickel and vanadium contaminants.Type: GrantFiled: July 8, 2002Date of Patent: April 6, 2004Assignee: Engelhard CorporationInventors: Rostam Madon, David H. Harris, Mingting Xu, David Stockwell, Bruce Lerner, Glenn W. Dodwell
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Patent number: 6716784Abstract: Catalytic compositions are described for hydrocarbons cracking containing at least two zeolitic components of which at least one zeolitic component containing aluminium in its structure is selected from among ITQ-7 zeolites, intergrowths of ITQ-7 zeolites, ITQ-7 zeolites exchanged with rare earths, intergrowths of ITQ-7 zeolites exchanged with rare earths, and combinations of them. These combinations are of utility as catalysts for cracking in FCC units and permit C3 and C4 olefins to be efficiently obtained along with high yields of gasoline. Also described is the use of a zeolitic material containing aluminium in its structure and selected from among ITQ-7 zeolites, intergrowths of ITQ-7 zeolites, ITQ-7 zeolites exchanged with rare earths, intergrowths of ITQ-7 zeolites exchanged with rare earths, and combinations of them, as a catalytic material in hydrocarbon catalytic cracking processes.Type: GrantFiled: September 23, 2002Date of Patent: April 6, 2004Assignees: Consejo Superior de Investigaciones Cientificas, Universidad Politecnica de ValenciaInventors: Avelino Corma Canós, María Diaz Caba{overscore (n)}as, Joaquín Martinez Triguero