Molybdenum Containing Patents (Class 502/220)
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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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Publication number: 20040209769Abstract: The invention provides a redox catalyst for the selective reduction of the nitrogen oxides present in exhaust gas from diesel engines using ammonia. The reduction catalyst contains a catalytically active material which is based on the solid acid system TiO2/WO3/MoO3V2O5/SiO2/SO3 and an oxidation catalyst based on the platinum group metals platinum and palladium. The reduction catalyst is present in the form of a cylindrical honeycomb catalyst with an inlet and an outlet end face. The oxidation catalyst is applied to a section of the reduction catalyst adjacent to the outlet end face. The redox catalyst is characterised in that the catalytically active material in the reduction catalyst is used as support material for the platinum group metals in the oxidation catalyst.Type: ApplicationFiled: June 14, 2004Publication date: October 21, 2004Inventors: Yvonne Demel, Thomas Kreuzer, Egbert Lox, Adolf Schafer-Sindlinger, Paul Spurk, Hans Van Den Tillaart
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Patent number: 6800585Abstract: Disclosed are a catalyst for selective catalytic reduction of nitrogen oxides and a method for preparing the same. Useful for the removal of nitrogen oxides is a catalyst prepared using spent catalysts having been absorbed with vanadium, nickel and sulfur in the hydro-desulfurization line of an oil refinery in which a catalyst for the hydro-desulfurization contains molybdenum, iron, cobalt and silicon on the alumina support in accordance with the present invention. The present catalyst can remove nitrogen oxides at a level of 90% or higher, exhibiting a 10% or more increase in efficiency of the catalyst performance. Additionally, the catalyst can increase the efficiency of spent catalyst reclamation by 250%.Type: GrantFiled: July 31, 2003Date of Patent: October 5, 2004Assignee: SK CorporationInventors: Kyung-Ii Choi, Sang-Ho Lee, Choul-Woo Shin, Jun-Seong Ahn, Bong-Jea Kim
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Publication number: 20040141910Abstract: The reactor is comprised of a body, a tubular ceramic porous membrane element placed coaxially inside it to remove the hydrogen, and a catalyst for the thermal breakdown of the hydrogen sulfide into sulfur and hydrogen, wherein said catalyst has been deposited directly on the tubular ceramic porous membrane element in the form of a layer. The reactor is applicable for treating gases containing hydrogen sulfide.Type: ApplicationFiled: December 15, 2003Publication date: July 22, 2004Inventor: Ricardo Blach Vizoso
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Patent number: 6753291Abstract: 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 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, wherein less than about 40%, preferably less than about 35%, more preferably less than about 25%, most preferably less than about 15%, of the sulfur present in the sulfided catalyst is added with the organic liquid. The process of the present invention makes it possible to use additive-containing catalysts without loss of activity in units which cannot effect gas phase start-up or are required to carry out a pressure test. The organic liquid may be a hydrocarbon with a boiling range of about 150-500° C., preferably gasoline, white spirit, diesel, gas oil, mineral lube oil, or white oil.Type: GrantFiled: April 10, 2001Date of Patent: June 22, 2004Assignees: Akzo Nobel N.V., Eurecat Europeenne de Retraltement de Catalysateur S.A.Inventors: Sonja Eijsbouts, Frans Lodewijk Plantenga, Pierre Dufresne, Franck Labruyere, Leendert Arie Gerritsen
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Publication number: 20040112795Abstract: The invention concerns a method for sulphurizing catalysts for hydrotreating of hydrocarbon feedstocks. The invention is characterised in that it consists in sulphurizing the catalyst in two steps: the first step consisting in sulphurization with tertiary mercaptan in the absence of hydrogen, and the second step, carried out consecutively in the same reactor, consisting of sulphurization with another sulphurizing agent in the presence of hydrogen. The catalysts thus sulphurized prove to be more active than those sulphurized by only the second step.Type: ApplicationFiled: January 13, 2004Publication date: June 17, 2004Inventors: Claude Brun, Georges Fremy
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Publication number: 20040096728Abstract: Non-noble metal transition metal catalysts can replace platinum in the oxidation reduction reaction (ORR) used in electrochemical fuel cells. A RuxSe catalyst is prepared with comparable catalytic activity to platinum. An environmentally friendly aqueous synthetic pathway to this catalyst is also presented. Using the same aqueous methodology, ORR catalysts can be prepared where Ru is replaced by Mo, Fe, Co, Cr, Ni and/or W. Similarly Se can be replaced by S.Type: ApplicationFiled: July 29, 2003Publication date: May 20, 2004Applicant: Ballard Power Systems Inc.Inventor: Stephen A. Campbell
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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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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: 6602818Abstract: Disclosed are a catalyst for selective catalytic reduction of nitrogen oxides and a method for preparing the same. The catalyst is prepared using a spent catalyst discharged from a hydro-desulfurization process of an oil refinery in which the spent catalyst comprises vanadium, nickel, molybdenum and sulfur component on alumina, and a tungsten-impregnated support. The catalyst prepared in accordance with the present invention is very advantageous in terms of excellent selective removal effect of nitrogen oxides as well as better poisoning resistance to sulfur oxides.Type: GrantFiled: September 25, 2001Date of Patent: August 5, 2003Assignee: SK CorporationInventors: Kyung-Il Choi, Sang-Ho Lee, Choul-Woo Shin, Jun-Seong Ahn
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Publication number: 20030130115Abstract: Highly active supported catalyst compositions and methods for producing more active supported catalyst compositions are disclosed. Said methods comprise steps for applying an adhesive coating of a catalytically active exfoliated transition metal dichalcogenide and promoters to the surface of a support medium prior to filling the pores of the support medium with catalytically active metals and/or promoters. A new method for applying a surface coating to a support is also disclosed.Type: ApplicationFiled: January 4, 2003Publication date: July 10, 2003Inventor: David Deck Rendina
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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: 6540908Abstract: The invention pertains to a process for preparing a sulfided hydrotreating catalyst in which a hydrotreating catalyst is subjected to a sulfidation step, wherein the hydrotreating catalyst comprises a carrier comprising at least 50 wt % of alumina, the catalyst comprising at least one hydrogenation metal component and an organic compound comprising at least one covalently bonded nitrogen atom and at least one carbonyl moiety, the molar ratio between the organic compound and the total hydrogenation metal content being at least 0.01:1. The invention further pertains to the use of said hydrotreating catalyst in hydrotreating a hydrocarbon feed, in particular to achieve hydrodenitrogenation, (deep) hydrodesulfurization, or hydrodearomatization.Type: GrantFiled: March 31, 2000Date of Patent: April 1, 2003Assignee: Akzo Nobel N.V.Inventors: Sonja Eijsbouts, Marcel Adriaan Jansen
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Patent number: 6534437Abstract: The invention pertains to a process for preparing a catalyst composition comprising bulk catalyst particles comprising at least one Group VIII non-noble metal and at least two Group VIB metals. The process comprises combining and reacting at least one Group VIII non-noble metal component with at least two Group VIB metal components in the presence of a protic liquid, with at least one of the metal components remaining at least partly in the solid state during the entire process. The Group VIII and Group VIB metals comprise from about 50 wt. % to about 100 wt. %, calculated as oxides, of the total weight of said bulk catalyst particles, with the solubility of those of the metal components which are at least partly in the solid state during the reaction being less than 0.05 mol/100 ml water at 18° C.Type: GrantFiled: April 17, 2001Date of Patent: March 18, 2003Assignee: Akzo Nobel N.V.Inventors: Sonja Eijsbouts, Bob Gerardus Oogjen, Harmannus Willem Homan Free, Marinus Bruce Cerfontain, Kenneth Lloyd Riley, Stuart Leon Soled, Sabato Miseo
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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: 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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Patent number: 6451729Abstract: The present invention is a new and simple method of decomposing ammonium tetrathiomolybdate (ATTM) in an organic solvent with added water under H2 pressure. Model compound reactions of 4-(1-naphthylmethyl)bibenzyl (NMBB) were carried out at 350-425° C. under H2 pressure in order to examine the activity of the Mo sulfide catalysts generated from ATTM with and without added water for C—C bond cleavage and hydrogenation of aromatic ring. The Mo sulfide catalysts generated from ATTM with added water were much more effective for C—C bond cleavage and hydrogenation of aromatic moieties at 350-425° C. than those from ATTM alone. Two-step tests revealed that the addition of water is effective for generating highly active Mo sulfide catalyst from ATTM, but water itself does not promote catalytic conversion. Removal of water after the decomposition of ATTM with added water at 350-400° C. under H2 pressure by hot purging gives highly active Mo sulfide catalyst.Type: GrantFiled: October 13, 2000Date of Patent: September 17, 2002Assignee: The Penn State Research FoundationInventors: Chunshan Song, Yoshiharu Yoneyama, Madhusudan Reddy Kondam
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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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Patent number: 6429332Abstract: A catalyst for the production of acrylic acid by the vapor-phase catalytic oxidation of acrolein or acrolein-containing gas and a method for the production of acrylic acid by the use of this catalyst are provided. The catalyst of this invention comprises (A) a catalyst having Mo and V as essential components and used for the production of acrylic acid by vapor-phase catalytic oxidation of acrolein and (B) a solid acid having acid strength (Ho) of not more than −11.93. Since this catalyst excels in catalytic activity and service life, it allows acrylic acid to be produced stably at a high yield for a long time.Type: GrantFiled: May 31, 1995Date of Patent: August 6, 2002Assignee: Nippon Shokubai Co., Ltd.Inventors: Michio Tanimoto, Tatsuya Kawajiri, Hiromi Yunoki, Yukio Aoki
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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: 20020061817Abstract: Disclosed is a method for preparing a catalyst for selective catalytic reduction of nitrogen oxides at high temperature window. The catalyst is prepared by recycling a spent catalyst discharged from a hydro-desulfurization process of an oil refinery in which the spent catalyst comprises an alumina support with a large specific surface area impregnated with low contents of vanadium and high contents of molybdenum. The thus prepared catalyst has more excellent selective removal activity of nitrogen oxides at a high temperature window by containing suitable amounts of metal components therein as well as a better poisoning resistance to sulfur oxides, compared with the conventional catalysts.Type: ApplicationFiled: September 25, 2001Publication date: May 23, 2002Inventors: Kyung-Il Choi, Sang-Ho Lee, Choul-Woo Shin, Jun-Seong Ahn, Jong-Hyun Kim, Bong-Jea Kim
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Publication number: 20020058586Abstract: Disclosed are a catalyst for selective catalytic reduction of nitrogen oxides and a method for preparing the same. The catalyst is prepared using a spent catalyst discharged from a hydro-desulfurization process of an oil refinery in which the spent catalyst comprises vanadium, nickel, molybdenum and sulfur component on alumina, and a tungsten-impregnated support. The catalyst prepared in accordance with the present invention is very advantageous in terms of excellent selective removal effect of nitrogen oxides as well as better poisoning resistance to sulfur oxides.Type: ApplicationFiled: September 25, 2001Publication date: May 16, 2002Inventors: Kyung-Il Choi, Sang-Ho Lee, Choul-Woo Shin, Jun-Seong Ahn
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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
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Publication number: 20020045540Abstract: Hydrotreating catalyst containing one or more metal oxides and/or sulphides selected from Group VI-B and Group VIII of the Periodic Table supported on a porous refractory carrier, wherein the catalyst being in form of an angular extrudate with rounded edges.Type: ApplicationFiled: August 23, 2001Publication date: April 18, 2002Applicant: Haldor Topsoe A/SInventor: Jesper Bartholdy
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Patent number: 6365542Abstract: A presulfurization method of hydrogenation catalyst comprises mixing an olefin-containing component, elemental sulfur and a promoter, heating the resultant mixture at 100-120° C. for more than 0.5 hours, wherein the mole number of elemental sulfur is at least not less than that of double bonds of the olefin, and the amount of the promoter used is 10-80% weight of the amount used of elemental sulfur, and said promoter is selected from an organic promoter used usually in rubber curing; the elemental sulfur-incorporated catalyst is impregnated with the product obtained, and heated at 100-300° C. in an inert atmosphere for more than 1 hour; wherein the volume amount of said product used is at least 60% of the pore volume of the catalyst. In the case of a little amount of the promoter being used, the presulfurization method can improve greatly the sulfur retention degree of the catalyst.Type: GrantFiled: January 24, 2000Date of Patent: April 2, 2002Assignee: China Petrochemical Corporation and Research Institute of Petroleum ProcessingInventors: Shouzhi Yu, Xiaodong Gao, Ruolei Chen
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Publication number: 20020000394Abstract: 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: ApplicationFiled: April 10, 2001Publication date: January 3, 2002Inventor: Sonja Eijsbouts
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Publication number: 20020000395Abstract: 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 with hydrogen and a sulfur-containing compound in the gaseous phase, characterized in that the process is carried out ex situ. By carrying out the process ex situ, the formation of undesirable side compounds in the hydrotreating unit is prevented. Additionally, the reactor suffers less downtime, and the start-up of the reactor may be simplified. The S-containing organic additive preferably is a mercapto-compound, more preferably a mercaptocarboxylic acid represented by the general formula HS—R1-COOR, wherein R1 stands for a divalent hydrocarbon group with 1-about 10 carbon atoms and R stands for a hydrogen atom, an alkali metal, an alkaline earth metal, ammonium, or a linear or branched alkyl group having 1 to about 10 carbon atoms.Type: ApplicationFiled: April 10, 2001Publication date: January 3, 2002Inventor: Sonja Eijsbouts
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Patent number: 6325920Abstract: The invention relates to a process for the sulphurization of catalysts for the hydrotreating of hydrocarbon feedstocks. According to the invention, a small amount of at least one orthophthalic acid ester is added to the sulphurization agent used to sulphurize the catalyst. The catalysts thus sulphurized prove to be more active than conventionally sulphurized catalysts.Type: GrantFiled: April 20, 2000Date of Patent: December 4, 2001Assignee: AtofinaInventors: Claude Brun, Thierry Cholley, Geoges Fremy
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Publication number: 20010046939Abstract: 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: ApplicationFiled: April 10, 2001Publication date: November 29, 2001Inventor: Sonja Eijsbouts
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Publication number: 20010044376Abstract: A catalyst body comprising a carrier and a catalyst layer containing an alkali metal and/or an alkaline earth metal, loaded on the carrier, which catalyst further contains a substance capable of reacting with the alkali metal and/or the alkaline earth metal, dominating over the reaction between the main components of the carrier and the alkali metal and/or the alkaline earth metal. With this catalyst body, the deterioration of the carrier by the alkali metal and/or the alkaline earth metal is prevented; therefore, the catalyst body can be used over a long period of time.Type: ApplicationFiled: December 14, 2000Publication date: November 22, 2001Inventors: Naomi Noda, Junichi Suzuki, Takashi Harada
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Patent number: 6316382Abstract: The invention concerns a process for sulphurizing supported catalysts containing at least one element selected from group IIIB, including the lanthanides and actinides, group IVB, group VB and group VIB, said process being characterized in that said catalyst is pre-reduced with at least one reducing gas other than hydrogen before sulphurizing said catalyst. The invention also concerns the sulfide catalysts obtained by the process of the present invention as well as the use of the sulfide catalyst in a process for hydrocracking and hydrotreatment of hydrocarbon-containing feeds.Type: GrantFiled: June 25, 1999Date of Patent: November 13, 2001Assignee: Institut Francais du PetroleInventor: Slavik Kasztelan
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Patent number: 6297189Abstract: A highly efficient sulfide catalyst for reducing sulfur dioxide to elemental sulfur, which maximizes the selectivity of elemental sulfur over byproducts and has a high conversion efficiency. Various feed stream contaminants, such as water vapor are well tolerated. Additionally, hydrogen, carbon monoxide, or hydrogen sulfides can be employed as the reducing gases while maintaining high conversion efficiency. This allows a much wider range of uses and higher level of feed stream contaminants than prior art catalysts.Type: GrantFiled: January 14, 1998Date of Patent: October 2, 2001Assignee: The Regents of the University of CaliforniaInventors: Yun Jin, Qiquan Yu, Shih-Ger Chang
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Patent number: 6291391Abstract: An improved method is described for presulfiding and preconditioning a residuum hydrotreating or hydrocracking catalyst as an integrated part of the hydroconversion process in which catalyst is added on-stream intermittently or continuously without interruption of the hydroconversion process. The method is used to condition, activate, or presulfide fresh or regenerated catalyst prior to its addition to the hydroconversion reactor utilizing product streams from the hydroconversion process.Type: GrantFiled: November 12, 1998Date of Patent: September 18, 2001Assignee: IFP North America, Inc.Inventor: James B. MacArthur
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Patent number: 6288006Abstract: For the presulphurization of catalysts based on metal oxides, intended especially for the hydrotreating of hydrocarbon feedstocks, at least one tertiary mercaptan (for example tert-dodecyl mercaptan) is employed as sulphurizing agent. This tertiary mercaptan can be employed alone or combined with another sulphur-donor compound. The presulphurization according to the invention may be carried out in situ or ex situ.Type: GrantFiled: September 22, 1999Date of Patent: September 11, 2001Assignee: Elf Aquitaine Exploration Production FranceInventor: Emmanuel Arretz
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Patent number: 6281158Abstract: This invention provides a cobalt-containing catalyst precursor for the preparation of a catalyst for catalytic hydrotreatment of hydrocarbonaceous feedstocks, and for a method of making same.Type: GrantFiled: October 19, 2000Date of Patent: August 28, 2001Assignee: Shell Oil CompanyInventors: Alexei Grigorievich Gabrielov, Patrick Minter Killough
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Patent number: 6248687Abstract: Presulfurizing process and presulfurization promoter for a desulfurization catalyst to be used in a hydrodesulfurization unit of petroleum refinery of high molecular hydrocarbons, in which fresh metal oxide in said desulfurization catalyst is sulfurized with hydrogen sulfide produced from sulfur-containing compounds in a feed stream. In the invention, a compound having mercapto alkylthio group: HS—CmH2m—S— (in which “m” is an integer of 2 to 4) is added as promoter at a proportion of 10 ppm to 0.5% by weight and presulfurization is promoted at 180 to 260° C.Type: GrantFiled: June 30, 1999Date of Patent: June 19, 2001Assignees: Nippon Shokubai Co., LTD, Elf Atochem S.A.Inventors: Hirokazu Itoh, Kazuaki Abe, Yoshihiro Arita, Einosuke Jodo, Kazuya Hata, Tetsushi Kawamura
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Patent number: 6242378Abstract: The invention concerns a process for sulphurising supported catalysts containing at least one element selected from group IIIB, including the lanthanides and actinides, group IVB and group VB, said process being characterized in that said catalyst is sulphurised using a mixture containing at least one source of elemental sulphur and at least one source of carbon in an autogenous or inert atmosphere. Also disclosed are sulphurised catalysts obtained by the process of the invention, the use of the catalysts in processes for hydrocracking and hydrotreatment of hydrocarbon-containing feeds.Type: GrantFiled: June 25, 1999Date of Patent: June 5, 2001Assignee: Institut Francais du PetroleInventor: Slavik Kasztelan
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Patent number: 6231750Abstract: The invention provides a hydrocracking catalyst comprising at least one mineral matrix, at least one beta zeolite, at least one group VB element or at least one mixed sulphide phase comprising sulphur, optionally at least one group VIB or group VIII element, optionally at least one element selected from the group formed by silicon, boron or phosphorous, and optionally at least one group VIIA element.Type: GrantFiled: June 25, 1999Date of Patent: May 15, 2001Assignee: Institut Francais du PetroleInventors: Slavik Kasztelan, Eric Benazzi, Nathalie Marchal-George
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Patent number: 6218333Abstract: There is provided a process for preparing a catalyst wherein the volatile content of an impregnated support is reduced in one or more steps, wherein at least one volatile content reduction step is performed in the presence of a sulfur containing compound.Type: GrantFiled: February 15, 1999Date of Patent: April 17, 2001Assignee: Shell Oil CompanyInventors: Alexei Grigorievich Gabrielov, Opinder Kishan Bhan
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Patent number: 6197718Abstract: An improved catalyst activation process for olefinic naphtha hydrodesulfurization. This process maintains the sulfur removal activity of the catalyst while reducing the olefin saturation activity.Type: GrantFiled: March 3, 1999Date of Patent: March 6, 2001Assignee: Exxon Research and Engineering CompanyInventors: Garland B. Brignac, Joseph J. Kociscin, Craig A. McKnight
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Patent number: 6180555Abstract: 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 150 m2/g, a pore volume greater than or equal to 0.20 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.Type: GrantFiled: October 9, 1998Date of Patent: January 30, 2001Assignee: Total Raffinage Distribution S.A.Inventors: Georges Szabo, Pedro Nascimento, Alain Milan, Sebsastien Decker
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Patent number: 6156693Abstract: The present invention is a new and simple method of decomposing ammonium tetrathiomolybdate (ATTM) in an organic solvent with added water under H.sub.2 pressure. Model compound reactions of 4-(1-naphthylmethyl)bibenzyl (NMBB) were carried out at 350-425.degree. C. under H.sub.2 pressure in order to examine the activity of the Mo sulfide catalysts generated from ATTM with and without added water for C--C bond cleavage and hydrogenation of aromatic ring. The Mo sulfide catalysts generated from ATTM with added water were much more effective for C--C bond cleavage and hydrogenation of aromatic moieties at 350-425.degree. C. than those from ATTM alone. Two-step tests revealed that the addition of water is effective for generating highly active Mo sulfide catalyst from ATTM, but water itself does not promote catalytic conversion. Removal of water after the decomposition of ATTM with added water at 350-400.degree. C. under H.sub.2 pressure by hot purging gives highly active Mo sulfide catalyst.Type: GrantFiled: October 6, 1999Date of Patent: December 5, 2000Assignee: Penn State Research FoundationInventors: Chunshan Song, Yoshiharu Yoneyama, Madhusudan Reddy Kondam
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Patent number: 6110860Abstract: A catalyst for exhaust gas purification characterized by high catalytic activity, heat resistance, and toxin resistance includes a metal oxide and at least one alkali metal sulfate or at least one alkaline earth metal sulfate. The process for producing the catalyst includes mixing the metal oxide with an aqueous solution of the sulfate, evaporating the mixture to dryness, and heat-treating the resultant mixed powder. An exhaust gas purifying apparatus includes an exhaust gas purifying filter having a high exhaust gas purification rate and an excellent durability. The filter includes a ceramic filter with a heat-resistant coating layer thereon for support of the catalyst.Type: GrantFiled: August 28, 1997Date of Patent: August 29, 2000Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Masahiro Inoue, Tatsuro Miyazaki, Nobuyuki Tokubuchi, Masaaki Arita
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Patent number: 6100216Abstract: A process for presulfurizing a hydrocarbon treatment catalyst and/or for preconditioning a catalyst, comprising one or two stages of incorporating sulfur into the pores of a hydrocarbon conversion catalyst conducted off-site in at least one zone that contains a catalyst, preferably in motion, and with either suilirated hydrogen (H.sub.2 S), sulfur, or a sulfur compound capable of evolving nascent suilirated hydrogen.Type: GrantFiled: January 16, 1997Date of Patent: August 8, 2000Assignee: Europeenne de Retraitement de Catalyseurs EurecatInventors: Pierre Dufresne, Nilanjan Brahma, Jean Darcissac, Franck Labruyere