Platinum Group (i.e., Ru, Rh, Pd, Os, Ir, Pt) Patents (Class 502/223)
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Patent number: 7473665Abstract: An exhaust gas-purifying catalyst system is provided with a plurality of catalyst layers including a first and a second catalyst layers, supported on a support structure. The first catalyst layer comes into contact with an exhaust gas stream firstly among the plurality of catalyst layers. The second catalyst layer is provided adjacent to the first catalyst layer. The first catalyst layer contains a first noble metal active component including rhodium, together with a powder of a barely soluble barium compound in an amount of 0.05 mol to 0.2 mol per volume in liter of the support structure. The second catalyst layer contains a second noble metal active component.Type: GrantFiled: September 17, 2004Date of Patent: January 6, 2009Assignee: Cataler CorporationInventors: Masaaki Kawai, Tomohito Mizukami, Yasunori Sato
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Publication number: 20080318106Abstract: The cathode catalyst for a mixed reactant fuel cell includes a mixed catalyst that includes a first catalyst including a Ru—Ch1 compound where Ch1 is a chalcogens selected from the group consisting of S, Se, Te, and combinations thereof, and a second catalyst including a Pt—Ch2 compound where Ch2 is a chalcogens selected from the group consisting of S, Se, Te, and combinations thereof. The cathode catalyst can improve excellent power characteristics of a fuel cell due to excellent catalyst activity and selectivity.Type: ApplicationFiled: March 19, 2008Publication date: December 25, 2008Inventors: Chan Kwak, Alexey Alexandrovichserov, Geun-Seok Chai, Soon-Ki Kang
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Patent number: 7453003Abstract: A catalyst comprising a transition metal zeolite, a noble metal, and a thiol is disclosed. The catalyst is used in an epoxidation process comprising reacting an olefin, hydrogen, and oxygen. The presence of a thiol in the catalyst reduces the formation of alkanes from the hydrogenation of olefins, and/or improves hydrogen and oxygen selectivities to epoxides.Type: GrantFiled: August 29, 2007Date of Patent: November 18, 2008Assignee: Lyondell Chemical Technology, L.P.Inventor: Bi Le-Khac
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Patent number: 7439206Abstract: A method of making a composition, said method comprising, spraying a substance comprising platinum and iron into or onto an alumina-containing compound is disclosed. The resulting composition can then be used in a process for oxidizing carbon monoxide with free oxygen.Type: GrantFiled: July 18, 2006Date of Patent: October 21, 2008Inventors: M. Bruce Welch, Roland Schmidt, Jianhua Yao, Glenn W. Dodwell, Robert W. Morton, Jason J. Gislason, James B. Kimble, David E. Simon, Marvin M. Johnson
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Patent number: 7420058Abstract: Provided are a compound for a molecular electronic device which includes a terpyridine-ruthenium organic metal compound including a thiol anchoring group of the formula below, a method of synthesizing the compound and a molecular electronic device including a molecular active layer obtained from the compound. In the formula, R1 and R2 are each a thioacetyl group or a hydrogen atom, at least one of R1 and R2 is a thioacetyl group, and m and n are each integers from 0 to 20. The molecular active layer, which is formed by self-assembling the compound on an electrode surface, composes a switching element and a memory element.Type: GrantFiled: November 22, 2006Date of Patent: September 2, 2008Assignee: Electronics and Telecommunications Research InstituteInventors: Hyo Young Lee, Jung Hyun Lee, Gyeong Sook Bang, Nak Jin Choi, Jong Hyurk Park
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Publication number: 20080194400Abstract: The invention relates to a multi-layer catalyst made from niobium for the catalytic conversion of hydrocarbons, comprising a) a support component made from a doped or undoped oxide or hydroxide of an element of the V sub-group of the periodic table, or mixtures thereof, b) a layer of a promoter compound, selected from oxygen, sulphur or phosphorus compounds of an element of the VI, VII and VIII sub-group or a phosphoxy compound and mixtures thereof and c) a layer comprising a compound of platinum metal. The invention further relates to a method for production of the catalyst and the use thereof.Type: ApplicationFiled: July 12, 2006Publication date: August 14, 2008Inventor: Friedrich Schmidt
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Patent number: 7410928Abstract: The instant invention is directed to the preparation of a catalyst composition suitable for the hydroconversion of heavy oils. The catalyst composition is prepared by a series of steps, involving mixing a Group VIB metal oxide particularly molybdenum oxide and aqueous ammonia to form an aqueous mixture, and sulfiding the mixture to form a slurry. The slurry is then promoted with a Group VIII metal. Subsequent steps involve mixing the slurry with a hydrocarbon oil and combining the resulting mixture with hydrogen gas and a second hydrocarbon oil having a lower viscosity than the first oil. An active catalyst composition is thereby formed.Type: GrantFiled: January 26, 2007Date of Patent: August 12, 2008Assignee: Chevron U.S.A. Inc.Inventors: Kaidong Chen, Pak C. Leung, Bruce E. Reynolds
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Patent number: 7396799Abstract: The instant invention is directed to the preparation of a slurry catalyst composition. The slurry catalyst composition is prepared in a series of steps, involving mixing a Group VIB metal oxide, particularly molybdenum and aqueous ammonia to form an aqueous mixture and sulfiding the mixture to form a slurry. The slurry is then promoted with a Group VIII metal. Subsequent steps involve mixing the slurry with a hydrocarbon oil, and combining the resulting mixture with hydrogen gas (under conditions which maintain the water in a liquid phase) to produce the active slurry catalyst.Type: GrantFiled: January 26, 2007Date of Patent: July 8, 2008Assignee: Chevron U.S.A. Inc.Inventors: Kaidong Chen, Bruce E. Reynolds
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Patent number: 7393809Abstract: This invention provides a new catalyst for purification of diesel engine exhaust gas comprising a carrier of at least one sulfur-resistant refractory oxide and at least one catalytic metal, wherein at least one solid acid and/or sulfuric acid is carried on the carrier by adding at least one precursor of said solid acid and/or sulfuric acid during the preparation of the carrier, and preparation thereof. The catalyst of this invention is thermally and chemically durable and can effectively remove particulate matters, hydrocarbons and nitrogen oxides contained in the diesel engine exhaust gas at low temperatures.Type: GrantFiled: September 7, 2004Date of Patent: July 1, 2008Assignee: KH Chemicals Co., Ltd.Inventor: Young-Nam Kim
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Patent number: 7347931Abstract: The invention relates to a catalyst for the selective hydrodesulfurization of hydrocarbon-containing feedstocks that comprise sulfur-containing compounds and olefins. This catalyst comes in a sulfurized form and comprises a substrate that is selected from among the refractory oxides, at least one metal that is selected from the group that consists of the metals of groups VI and VII of the periodic table and carbon, whereby the carbon content is less than or equal to 2.8% by weight. The invention also relates to a method for the production of the catalyst that is described above, as well as a process that uses this catalyst for the selective hydrodesulfurization of hydrocarbon-containing feedstocks that contain sulfur-containing compounds and olefins.Type: GrantFiled: January 29, 2004Date of Patent: March 25, 2008Assignee: Institut Francais du PetroleInventors: Denis Uzio, Nathalie Marchal-George, Christophe Bouchy, Florent Picard
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Patent number: 7138357Abstract: The invention relates to a photocatalyst containing titanium dioxide, to a method for using it and to its application. A sulphurous titanium dioxide hydrate precipitate is precipitated from an acid titanium oxysulphate solution at a temperature below the boiling point of the solution, e.g. in the range from 70 to 100° C., using crystal nuclei and without addition of base. The precipitate is separated, washed and calcinated. The photocatalytic titanium dioxide thus obtained has a specific area in the range from 100 to 250 m2/g and a 0.3 to 5% sulphur concentration. Catalytic activity has been confirmed in asetal dehyde decomposition and in anionic (SNC?)2 radical formation.Type: GrantFiled: April 1, 2003Date of Patent: November 21, 2006Assignee: Kemira Pigments OyInventors: Saila Marjatta Karvinen, Ralf-Johan Lamminmäki
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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: 7041866Abstract: A catalyst and process is disclosed to selectively upgrade a paraffinic feedstock to obtain an isoparaffin-rich product for blending into gasoline. The catalyst comprises a support of a sulfated oxide or hydroxide of a Group IVB (IUPAC 4) metal, a first component comprising at least one Group III A (IUPAC 13) component, and at least one platinum-group metal component which is preferably platinum.Type: GrantFiled: October 8, 2002Date of Patent: May 9, 2006Assignee: UOP LLCInventor: Ralph D. Gillespie
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Patent number: 7026268Abstract: The present invention provides a concentration distribution for a platinum group metal component in a catalyst with which catalyst activity can be increased, and to provide a method for supporting a platinum group metal with which this concentration distribution can be achieved. The present invention is a solid acid catalyst that is made up of porous catalyst pellets exhibiting solid acid characteristics, and a platinum group metal component supported by these catalyst pellets, and that is used in an acid-catalyzed reaction, in which a quotient of dividing the standard deviation of the concentration in a platinum group metal component concentration distribution in the catalyst by an average concentration is 0.4 or less. The method for preparing this catalyst involves a step of preparing a support solution containing a platinum group metal as a cation, and a step of impregnating crystalline, porous catalyst pellets exhibiting solid acid characteristics with this support solution.Type: GrantFiled: February 28, 2002Date of Patent: April 11, 2006Assignee: Japan Energy CorporationInventors: Satoshi Furuta, Minoru Ogawa
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Patent number: 6967185Abstract: A noble metal sulfide catalyst obtained by reaction of a precursor of at least one noble metal with a thionic species in an aqueous environment essentially free of sulfide ions useful as an electrocatalyst in the depolarized electrolysis of hydrochloric acid.Type: GrantFiled: June 24, 2004Date of Patent: November 22, 2005Assignee: De Nora Elettrodi S.p.A.Inventors: Robert J. Allen, Andrea F. Gulla
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Patent number: 6921604Abstract: A device and a method for simply and accurately evaluating-performance of fuel cells have been provided. Hydrogen gas and carbon monoxide gas are caused to flow into a sample holder where an electrode catalyst sample is laid, and the amount of carbon monoxide gas discharged therefrom is detected. The amount of carbon monoxide gas adsorbed by the electrode catalyst sample is calculated based on the amount of supplied carbon monoxide gas and the amount of detected carbon monoxide gas. The output voltage of a fuel cell is calculated based on a correlation between calculated amounts of carbon monoxide gas adsorbed by the electrode catalyst and output voltages of the fuel cell.Type: GrantFiled: February 17, 2004Date of Patent: July 26, 2005Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hisao Kato, Tatsuya Kawahara, Toshiaki Ozaki
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Patent number: 6872678Abstract: The present invention pertains to a process for activating a catalyst composition comprising at least one hydrogenation metal component of Group VI and/or Group VIII of the Periodic Table, and an S-containing organic additive, wherein the catalyst is contacted with hydrogen at a temperature between room temperature and about 600° C., preferably about 100-450° C., and prior to or during the contacting with hydrogen the catalyst is contacted with an organic liquid. Preferably, the contacting with the organic liquid is carried out prior to the contacting with hydrogen. The organic liquid may be a hydrocarbon with a boiling range of 150-500° C., preferably white oil, gasoline, diesel, or gas oil or mineral lube oil. It was found that the application of an organic liquid prior to or during the hydrogen treatment results in catalysts with an increased activity. The invention also comprises catalyst made by the above process and the use of such catalyst in hydrotreating.Type: GrantFiled: April 10, 2001Date of Patent: March 29, 2005Assignee: Akzo Nobel N.V.Inventor: Sonja Eijsbouts
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Patent number: 6855661Abstract: This invention provides a new catalyst for purification of diesel engine exhaust gas comprising a carrier of at least one sulfur-resistant refractory oxide and at least one catalytic metal, wherein at least one solid acid and/or sulfuric acid is carried on the carrier by adding at least one precursor of said solid acid and/or sulfuric acid during the preparation of the carrier, and preparation thereof. The catalyst of this invention is thermally and chemically durable and can effectively remove particulate matters, hydrocarbons and nitrogen oxides contained in the diesel engine exhaust gas at low temperatures.Type: GrantFiled: May 22, 2001Date of Patent: February 15, 2005Assignee: KH Chemicals Co., LTDInventor: Young-Nam Kim
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Patent number: 6855660Abstract: A rhodium sulfide electrocatalyst formed by heating an aqueous solution of rhodium salt until a steady state distribution of isomers is obtained and then sparging hydrogen sulfide into the solution to form the rhodium sulfide and a membrane electrode assembly with the said electrode and a process for electrolyzing hydrochloric acid.Type: GrantFiled: May 8, 2002Date of Patent: February 15, 2005Assignee: De Nora Elettrodi S.p.A.Inventors: Yu-Min Tsou, Hua Deng, Gian Nicola Martelli, Robert J. Allen, Emory S. De Castro
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Patent number: 6838413Abstract: A photocatalyst which comprises an oxysulfide containing at least one transition metal; a preferable photocatalyst which also comprises a rare earth element such as Sm in addition to the above and wherein the transition metal is at least one selected from the group consisting of Ti and Nb; a more preferable photocatalyst which further comprises a promoter comprising a transition metal such as Pt loaded on each of the above photocatalyst; and a catalyst for use in the decomposition of water by a light which comprises one of the above oxysulfide photocatalysts.Type: GrantFiled: January 23, 2002Date of Patent: January 4, 2005Assignee: Japan Science and Technology AgencyInventors: Kazunari Domen, Michikazu Hara, Tsuyoshi Takata, Akio Ishikawa
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Publication number: 20040254318Abstract: The present invention relates to a method for preparing a cyclic olefin polymer by addition polymerization, and more particularly to a method for preparing a norbornene-based addition polymer, which comprises a step of contacting a norbornene-based monomer having an ester or acctyl group with a catalyst system comprising: a Group X transition metal compound; a compound comprising a neutral Group XV electron donor ligand having a cone angle of at least 160°; and a salt capable of offering an anion that can be weakly coordinated to the transition metal, in solvent. The norbornene-based addition polymer having an ester or acetyl group according to the present invention is transparent, has superior adhesivity and a low dielectric constant, and it generates no byproducts when attached to metal. Therefore, it can be used as an optical film, a retardation film, a protection film for a polarizer POFs (plastic optical fiber), PCBs (printed circuit board), or insulators of electronic devices.Type: ApplicationFiled: May 7, 2004Publication date: December 16, 2004Inventors: Sung-Ho Chun, Won-Kook Kim, Sung-Cheol Yoon, Tae-Sun Lim, Heon Kim, Kyoung-Hoon Kim
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Publication number: 20040242412Abstract: Ruthenium sulfide catalyst and gas diffusion electrodes incorporating the same for reduction of oxygen in industrial electrolyzers which catalyst is highly resistant to corrosion making it useful for oxygen-depolarized aqueous hydrochloric acid electrolysis.Type: ApplicationFiled: April 22, 2004Publication date: December 2, 2004Inventors: Andrea F. Gulla, Robert J. Allen, Emory S. De Castro
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Publication number: 20040226863Abstract: The invention relates to a catalyst for the selective hydrodesulfurization of hydrocarbon-containing feedstocks that comprise sulfur-containing compounds and olefins. This catalyst comes in a sulfurized form and comprises a substrate that is selected from among the refractory oxides, at least one metal that is selected from the group that consists of the metals of groups VI and VII of the periodic table and carbon, whereby the carbon content is less than or equal to 2.8% by weight. The invention also relates to a method for the production of the catalyst that is described above, as well as a process that uses this catalyst for the selective hydrodesulfurization of hydrocarbon-containing feedstocks that contain sulfur-containing compounds and olefins.Type: ApplicationFiled: January 29, 2004Publication date: November 18, 2004Inventors: Denis Uzio, Nathalie Marchal-George, Christophe Bouchy, Florent Picard
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Patent number: 6743749Abstract: A Ti—O—N film is formed on an SiO2 substrate by sputtering. For example, TiO2 is used as a target and nitrogen gas is introduced into the atmosphere. Crystallization is carried out by a post-sputtering heat treatment. Then a charge separation material such as Pt is supported on the Ti—O—N film. With the fabricated TiO2 crystals, the Ti—O—N film containing nitrogen exhibits a good catalytic reaction by using visible light as acting light. Since the charge separation material captures electrons or positive holes, recombination of electrons and positive holes is effectively prevented, and consequently more efficient photocatalytic reaction is performed. It is preferable to form a photocatalyst material film (Ti—Cr—O—N film) by sputtering the SiO2 substrate by use of TiO2 and Cr as the target in a nitrogen atmosphere. Crystallization is performed by a post-sputtering heat treatment.Type: GrantFiled: July 26, 2002Date of Patent: June 1, 2004Assignee: Kabushiki Kaisha Toyota Chuo KenkyushoInventors: Takeshi Morikawa, Takahiro Shiga, Ryoji Asahi, Takeshi Ohwaki, Yasunori Taga
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Patent number: 6737380Abstract: A process for producing a solid acid catalyst, which comprises: adding a pseudoboehmite as a binder to a sulfated zirconium hydroxide, followed by kneading with an aqueous solution containing at least one metal of the Group VIII, or loading at least one metal of the Group VIII on a sulfated zirconium hydroxide, and then adding a pseudoboehmite as a binder thereto, followed by kneading with water, further followed by molding and calcining at a temperature of from 550 to 800° C.; a solid acid catalyst produced by the production process; and a method for hydrodesulfurizing and isomerizing a light hydrocarbon oil using the catalyst.Type: GrantFiled: January 30, 2002Date of Patent: May 18, 2004Assignees: Petroleum Energy Center, Cosmo Oil Co., Ltd.Inventors: Katsuya Watanabe, Takahito Kawakami, Koji Baba, Takao Kimura
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Patent number: 6696386Abstract: The present invention provides the exhaust gas purification catalysts containing a first catalyst component comprising an inorganic oxide having heat resistance and a transition metal oxide supported on the surface of the inorganic oxide and a second catalyst comprising at least one alkali metal sulfate, which have a high catalytic activity for the burning of particulates.Type: GrantFiled: May 6, 2002Date of Patent: February 24, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Masahiro Inoue, Tatsuro Miyazaki, Nobuyuki Tokubuchi, Masaaki Arita, Yota Hashimoto
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Patent number: 6696388Abstract: A gel composition substantially contained within the pores of a solid material for use as a catalyst or as a catalyst support in dehydrogenation and dehydrocyclization processes.Type: GrantFiled: January 10, 2001Date of Patent: February 24, 2004Assignee: E. I. du Pont de Nemours and CompanyInventors: Kostantinos Kourtakis, Leo E. Manzer
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Publication number: 20040013601Abstract: The invention relates to a supported platinum group metal catalyst obtainable by controlled electroless deposition of at least one platinum group metal from a deposition solution which comprisesType: ApplicationFiled: April 2, 2003Publication date: January 22, 2004Inventors: Thomas Butz, Henrik Junicke
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Publication number: 20030216246Abstract: A metal complex comprising a transition metal complex of a bidentate or tridentate, dithioether ligand having utility as a catalyst component of an olefin polymerization catalyst composition in combination with an activating co-catalyst.Type: ApplicationFiled: March 17, 2003Publication date: November 20, 2003Inventors: Jessica A Cook, John Joseph Bielak
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Publication number: 20030211936Abstract: Disclosed is an NOx storage catalyst in honeycomb form wherein the honeycomb is formed from at least one alkaline earth metal sulfate as precursor compound of the storage material, optionally in combination with the customary concomitant and assistant materials and/or optionally at least one stabilizer.Type: ApplicationFiled: June 19, 2003Publication date: November 13, 2003Applicant: BASF AkiengesellschaftInventors: Michael Bender, Michael Hesse
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Patent number: 6635599Abstract: The present invention relates to a process for the preparation of a hydroprocessing catalyst, to the catalyst composition obtainable by said process, and to the use of said catalyst composition in hydroprocessing applications. The process comprises the steps of combining and reacting at least one Group VIII non-noble metal component in solution and at least two Group VIB metal components in solution in a reaction mixture to obtain an oxygen-stable precipitate, and sulfiding the precipitate.Type: GrantFiled: January 13, 2000Date of Patent: October 21, 2003Assignee: Exxonmobil Research & Engineering CompanyInventors: Sonja Eijsbouts, Bob Gerardus Oogjen, Hermannus Willem Homan Free, Marinus Bruce Cerfontain, Kenneth Lloyd Riley, Stuart Leon Soled, Sabato Miseo
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Patent number: 6635600Abstract: A supported hydrogenation catalyst composition is disclosed which comprises palladium, an inorganic support such as alumina, and a selectivity enhancer selected from the group consisting of silver, phosphorus, sulfur, and combinations of two or more thereof. Also disclosed is a selective hydrogenation process in which highly unsaturated hydrocarbons such as diolefins and/or alkynes are hydrogenated with hydrogen to less unsaturated hydrocarbons such as monoolefins.Type: GrantFiled: August 15, 2000Date of Patent: October 21, 2003Assignee: Phillips Petroleum CompanyInventors: James B. Kimble, Joseph J. Bergmeister
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Publication number: 20030104932Abstract: This invention provides a new catalyst for purification of diesel engine exhaust gas comprising a carrier of at least one sulfur-resistant refractory oxide and at least one catalytic metal, wherein at least one solid acid and/or sulfuric acid is carried on the carrier by adding at least one precursor of said solid acid and/or sulfuric acid during the preparation of the carrier, and preparation thereof. The catalyst of this invention is thermally and chemically durable and can effectively remove particulate matters, hydrocarbons and nitrogen oxides contained in the diesel engine exhaust gas at low temperatures.Type: ApplicationFiled: July 16, 2002Publication date: June 5, 2003Inventor: Young-Nam Kim
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Patent number: 6562749Abstract: A process for the preparation of a ceramic foam supporting one or more catalytically active components or precursors thereof, which component is active in a form other than an inorganic oxide, the process comprising impregnation of the foam with an impregnating phase comprising the catalytically active component or a precursor thereof and drying, wherein the impregnating phase has a viscosity greater than 1 cps, wherein drying is performed without substantial prior draining of impregnating phase from the ceramic foam, and wherein the catalytically active component or precursor thereof is present throughout the process in one or more forms other than the inorganic oxide thereof. The ceramic foams prepared by this process find use in catalytic conversion processes, in particular the catalytic partial oxidation of a hydrocarbon feed.Type: GrantFiled: November 26, 1996Date of Patent: May 13, 2003Assignee: Shell Oil CompanyInventors: Peter William Lednor, Katherine Searcy-Roberts
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Patent number: 6562752Abstract: A catalyst containing a sulfide phase comprising (a) sulfur (b) and at least one element A selected form group IIIB, including the lanthanides and actinides, group IVB and group VB, and optionally (c) at least one element B selected from group VIIB and group VIII and mixtures thereof, is suitable for use in, for example, hydrorefining or hydroconversion. Sulfur is present in the catalyst at a quantity higher than the quantity corresponding to 40% of the stoichiometric quantity of sulfur in the sulfide compounds of elements from groups MB, IVB, VB, VIIB and VIII. The catalyst also, optionally, comprises at least one porous amorphous or low crystallinity type matrix.Type: GrantFiled: December 22, 2000Date of Patent: May 13, 2003Assignee: Institut Francais du PetroleInventor: Slavik Kasztelan
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Publication number: 20030069131Abstract: One aspect of the present invention relates to a catalytic compound of anion-modified metal oxides doped with metal ions. Another aspect of the present invention relates to a method of isomerizing an alkane or alkyl moiety.Type: ApplicationFiled: August 7, 2002Publication date: April 10, 2003Inventors: Jackie Y. Ying, Jinsuo Xu
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Patent number: 6511934Abstract: A catalyst composition for the polymerization of olefins is provided, comprising a transition metal precursor containing sulfur ligands and an activating co-catalyst.Type: GrantFiled: October 17, 2000Date of Patent: January 28, 2003Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Jessica Ann Cook, John Joseph Bielak
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Patent number: 6509289Abstract: A catalyst composition and a process for hydrodealkylating a C9+ aromatic compound such as, for example, 1,2,4-trimethylbenzene to a C6 to C8 aromatic hydrocarbon such as a xylene are disclosed. The composition comprises an alumina, a metal oxide, a phosphorus oxide and optionally, an acid site modifier selected from the group consisting of silicon oxides, sulfur oxides, boron oxides, magnesium oxides, tin oxides, titanium oxides, zirconium oxides, molybdenum oxides, germanium oxides, indium oxides, lanthanum oxides, cesium oxides, and combinations of any two or more thereof. The process comprises contacting a fluid which comprises a C9+ aromatic compound with the catalyst composition under a condition sufficient to effect the conversion of a C9+ aromatic compound to a C6 to C8 aromatic hydrocarbon.Type: GrantFiled: January 20, 2000Date of Patent: January 21, 2003Assignee: Phillips Petroleum CompanyInventors: An-hsiang Wu, Charles A. Drake
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Patent number: 6509291Abstract: The present invention pertains to a process for sulfiding a catalyst composition comprising at least one hydrogenation metal component of Group VI and/or Group VIII of the Periodic Table, and an S-containing organic additive wherein the catalyst composition is first contacted with an organic liquid, followed by the catalyst being contacted with hydrogen and a sulfur-containing compound in the gaseous phase. The invention also pertains to the sulfided catalyst composition and its use in hydrotreating. Catalysts sulfided by the process according to the invention show a higher activity than the same catalysts which have not been sulfided. It is preferred to carry out the process according to the invention ex situ, where it solves the problem of difficult start-up and the formation of undesirable side products in the hydrotreating unit. The organic liquid may be a hydrocarbon with a boiling range of about 150-500° C., preferably white oil, gasoline, diesel, gas oil, or mineral lube oil.Type: GrantFiled: April 10, 2001Date of Patent: January 21, 2003Assignee: Akzo Nobel N.V.Inventor: Sonja Eijsbouts
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Patent number: 6503864Abstract: A process for the sulfiding of a hydrodesulfurization catalyst for example in a distillation column reactor. The catalyst in the distillation column reactor is first dried using nitrogen and the reactor is filled with a sulfiding solvent and circulation begun. The reactor is heated to a temperature above the decomposition temperature of the sulfiding agent to be used and the sulfiding agent charged to the reactor. When sulfiding agent breakthrough is noted in the overheads the temperature is raised and held until sulfiding is complete.Type: GrantFiled: February 8, 2001Date of Patent: January 7, 2003Assignee: Catalytic Distillation TechnologiesInventors: Mitchell E. Loescher, Gary G. Podrebarac, Purvis K. Ho
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Patent number: 6495733Abstract: A superacid catalyst comprising: zirconium oxide on whose surface sulfate groups are present, in a quality corresponding to total coverage of the surface of the zirconium oxide by means of a monolayer of these sulfate groups, optionally containing a noble metal in a quantity ranging from 0.1 to 3% by weight, with a porosity ranging from 0.1 to 0.30 cm3/g, consisting of at least 70% of pores with a diameter ranging from 1 to 4 nm, prepared by a process which comprises: (a) hydrolyzing derivate of zirconium in a basic medium in the presence of a tetra-alkylammonium hydroxide (TAA), sulfuric acid and acetylacetone (AcAc); (b) drying the product of step (a) and calcining the dried material at a temperature ranging from 250 to 650° C. (c) optionally treating the product resulting from step (b) with an aqueous solution of a compound of a noble metal, and drying and calcining the treated product.Type: GrantFiled: October 31, 2000Date of Patent: December 17, 2002Assignees: AGIP Petroli S.p.A., Enitecnologie S.p.A.Inventors: Stefano Peratello, Angela Carati
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Patent number: 6492570Abstract: The invention provides a polynuclear compound comprising two or more metal-hapto-3-capped nidocarborane groups. Also provided is the use of such a compound as a catalyst in a chemical reaction such as a hydrogenation or oxidation reaction.Type: GrantFiled: December 13, 1999Date of Patent: December 10, 2002Assignee: British Nuclear Fuels PLCInventors: Nigel Dennis Tinker, Kenneth Wade, Thomas Gibson Hibbert
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Patent number: 6492296Abstract: The present invention pertains to a process for sulfiding a catalyst composition comprising at least one hydrogenation metal component of Group VI and/or Group VIII of the Periodic Table, and an S-containing organic additive wherein the catalyst composition is contacted in two steps with hydrogen and a sulfur-containing compound in the gaseous phase, with the first step being performed at a temperature which is lower than that of the second step. Catalysts sulfided by the process according to the invention show a higher activity than the same catalysts which have been sulfided in a one-step process. It is preferred to carry out the process according to the invention ex situ, where it solves the problem of difficult start-up and the formation of undesirable side products in the hydrotreating unit.Type: GrantFiled: April 10, 2001Date of Patent: December 10, 2002Assignee: Akzo Nobel NVInventor: Sonja Eijsbouts
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Publication number: 20020151435Abstract: A practical catalyst exhibiting especially high CO shift reaction activity in a low temperature region where CO is favorably converted to H2 in equilibrium includes a carrier which is composed of titania as a main component, a noble metal which is supported on the carrier, and a sulfur-containing material which adheres to the carrier. The titania carrier to which the sulfur-containing material adheres exhibits high solid acid strength, and accordingly acts to absorb electrons from noble metal so that noble metal becomes partially oxidized. This results in the CO adsorbing ability decreasing to restrain poisoning of noble metal due to CO, whereby the CO shift reaction activity in a low temperature region is improved.Type: ApplicationFiled: February 4, 2002Publication date: October 17, 2002Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHOInventors: Kiyoshi Yamazaki, Akihiko Suda
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Patent number: 6448198Abstract: The invention relates to an acid catalyst containing a substantial quantity of supported or mass sulfated zirconia and at least one hydrogenating transition metal. This catalyst is characterized by the fact that the sulfated zirconia is in crystallized form and that it shows a specific surface area greater than or equal to 135 m2/g, a pore volume greater than or equal to 0.16 cm3/g and an average pore diameter greater than or equal to 20 Angstroms (20×10−10 m). The invention also relates to methods of making this catalyst and to the uses of this catalyst in hydrocarbon transformation chemical reactions requiring the use of an acid type catalyst, such as for example, isomerization, alkylation, oligomerization reactions or even light hydrocarbon dehydration reactions, and also heavier hydrocarbon hydrocracking and hydroisomerization reactions. In a preferred embodiment of the method of the present invention, a hydrated zirconia gel is washed with a soluble polar organic solvent (other than water).Type: GrantFiled: July 10, 2000Date of Patent: September 10, 2002Assignee: Total Raffinage Distribution S.A.Inventors: Georges Szabo, Pedro Nascimento, Alain Milan, Sebastien Decker, Joeri Denayer, Jean-Pierre Dath
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Publication number: 20020107139Abstract: The present invention is a coated hydrogenation catalyst that includes a porous support material, an active metal component and a silica precursor, wherein the support material is impregnated with the active metal component and then contacted with the silica precursor. After impregnation, the support material is calcined to form a SiO2 layer. The active metal component can be one or more Group VIII metals, metal oxides, metal sulfides or metal carbides. The support material for the coated catalyst is kieselguhr, alumina, silica or silica-alumina. In a preferred embodiment, the active metal component is platinum, palladium, rhodium, rhenium or iridium and the catalyst includes a zeolite component. The coated catalyst is prepared by first impregnating the support material with the active metal component and then contacting the silica precursor to form an impregnated catalyst. The impregnated catalyst is then calcined to form the coated catalyst having a SiO2 layer.Type: ApplicationFiled: December 5, 2000Publication date: August 8, 2002Inventors: Thomas F. Degnan, Ivy Dawn Johnson
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Publication number: 20020103079Abstract: A process for the preparation of a catalyst is described, said catalyst comprising at least one inorganic refractory support, at least one halogen or halogenated compound at a content greater than 0.1% by weight, at least one metal from group VIII of the periodic classification (platinum, palladium, nickel and ruthenium) and at least one additional metal M selected from germanium, tin, lead, iron, titanium and chromium. The process is characterised in that said metal M is introduced in the form of at least one orqanometallic complex. The catalyst prepared in accordance with the invention may be used for dehydrogenation reactions, particularly of paraffinic hydrocarbons and olefinic hydrocarbons.Type: ApplicationFiled: August 23, 1996Publication date: August 1, 2002Inventors: FABIENNE LEPELTIER, SYLVIE ROBERT, JEAN-PAUL BOITIAUX, BLAISE DIDILLON, OLIVER CLAUSE
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Patent number: 6417134Abstract: The invention relates to a process for the ex-situ presulfuration of a catalyst for the hydroconversion of hydrocarbons in the presence of hydrogen and of at least one sulfurated compound. It is characterized in that the catalyst is also brought into contact with at least one hydrocarbon compound.Type: GrantFiled: October 12, 1999Date of Patent: July 9, 2002Assignee: Europeenne de Retraitement de Catalyseurs EurecatInventors: Pierre Dufresne, Franck Labruyere
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Publication number: 20020045539Abstract: A catalyst containing a sulfide phase comprising (a) sulfur (b) and at least one element A selected form group IIIB, including the lanthanides and actinides, group IVB and group VB, and optionally (c) at least one element B selected from group VIIB and group VIII and mixtures thereof, is suitable for use in, for example, hydrorefining or hydroconversion. Sulfur is present in the catalyst at a quantity higher than the quantity corresponding to 40% of the stoichiometric quantity of sulfur in the sulfide compounds of elements from groups MB, IVB, VB, VIIB and VIII. The catalyst also, optionally, comprises at least one porous amorphous or low crystallinity type matrix.Type: ApplicationFiled: December 22, 2000Publication date: April 18, 2002Applicant: Institut Francais du PetroleInventor: Slavik Kasztelan
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Publication number: 20020045538Abstract: Present invention relates to a CdZnMS photocatalyst for producing hydrogen from water and a method for preparing thereof and a method for producing hydrogen by using said photocatalyst.Type: ApplicationFiled: December 14, 2000Publication date: April 18, 2002Inventors: Dae-Chul Park, Jin-ook Baeg