Elemental Co, Fe, Or Ni Patents (Class 585/276)
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Patent number: 7193120Abstract: The invention relates to a process for hydrogen transfer to chemical compounds, wherein hydrogen transfer is carried out in a supercritical or subcritical phase using stabilized and dispersed metal particles. The invention further provides for the use of metal colloids stabilized by organic compounds or embedded in organic compounds as catalysts in a process for hydrogen transfer to chemical compounds in a supercritical or subcritical phase so as to avoid the formation of free-radical intermediates during hydrogen transfer.Type: GrantFiled: May 25, 2002Date of Patent: March 20, 2007Assignee: BASF AktiengesellschaftInventors: Heiko G. Niessen, Klaus Woelk, Andreas Eichhorn, Joachim Bargon
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Patent number: 7078130Abstract: This invention provides novel stable metallic mesoporous transition metal oxide molecular sieves and methods for their production. The sieves have high electrical conductivity and may be used as solid electrolyte devices, e.g., in fuel cells, as sorbents, e.g. for hydrogen storage, and as catalysts. The invention also provides room temperature activation of dinitrogen, using the sieves as a catalyst, which permits ammonia production at room temperature.Type: GrantFiled: November 25, 2002Date of Patent: July 18, 2006Assignee: University of WindsorInventor: David M. Antonelli
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Patent number: 7070690Abstract: The invention relates to a process for conversion of hydrocarbons in the presence of at least one catalyst with controlled acidity, characterized in that the level of activity of said catalyst in isomerization of the cyclohexane is less than 0.10 and/or in that the ratio of toluene hydrogenation activity to the cyclohexane isomerization activity is greater than 10.Type: GrantFiled: February 24, 2003Date of Patent: July 4, 2006Assignee: Institut Francais du PetroleInventors: Virginie Harle, Stéphane Kressmann, Isabelle Guibard, Slavik Kasztelan, Frédéric Morel
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Patent number: 7067448Abstract: The invention relates to a method for the production of n-alkanes from mineral oil fractions and fractions from thermal or catalytic conversion plants, containing cyclic alkanes, alkenes, cyclic alkenes and/or aromatics. The invention further relates to a catalyst for carrying out said method.Type: GrantFiled: October 4, 2000Date of Patent: June 27, 2006Assignee: Veba Oil Refining and Petrochemicals GmbHInventors: Jens Weitkamp, Hilmar Bischof, Werner Doehler, Juergen Laege, Franz Fuder, Andreas Raichle, Yvonne Traa
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Patent number: 7025872Abstract: Process for obtaining a hydrocarbon fraction that can be used as a feedstock of an etherification unit and that contains a small amount of diene compounds, nitrogen-containing compounds and sulfur-containing compounds, starting from an initial hydrocarbon feedstock that comprises a mixture of olefins, dienes, and nitrites as well as sulfur-containing compounds, whereby said process comprises at least the following successive stages: a) a selective hydrogenation of said initial hydrocarbon feedstock in the presence of a catalyst of group VIII of the periodic table, b) a fractionation by distillation of the effluents that are obtained from stage a) under conditions that make it possible to obtain at least two fractions including said hydrocarbon fraction and that comprises a small amount of diene compounds, nitrogen-containing compounds and sulfur-containing compounds, and a heavy fraction that contains heavy hydrocarbons and the majority of the nitrogen-containing compounds and sulfur-containing compoundsType: GrantFiled: January 22, 2004Date of Patent: April 11, 2006Assignee: Institut Francais du PetroleInventors: Florent Picard, Alain Forestiere, Julia Magne-Drisch, Nathalie Marchal-George
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Patent number: 7014750Abstract: Systems and processes for the hydrotreatment of pyrolysis gasoline comprising reactors, monolithic catalyst beds and hydrogen-containing treatment gases that allow for improved efficiency and productivity over conventional trickle bed processes and systems for such hydrotreatment.Type: GrantFiled: August 5, 2004Date of Patent: March 21, 2006Assignee: Corning IncorporatedInventors: Thorsten R. Boger, Shantanu Roy, Charles M. Sorensen, Jr.
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Patent number: 7011807Abstract: Supported reactive catalysts having a controlled coordination structure and methods for their production are disclosed. The supported catalysts of the present invention are useful for the preparation of hydrogen peroxide with high selectivity in addition to other chemical conversion reactions. The supported catalyst comprises catalyst particles having top or outer layer of atoms in which at least a portion of the atoms exhibit a controlled coordination number of 2. The catalyst and methods may be used for the concurrent in situ and ex situ conversion of organic compounds. In addition, a process is provided for catalytically producing hydrogen peroxide from hydrogen and oxygen feeds by contacting them with the catalysts of the invention and a suitable organic liquid solvent having a Solvent Selection Parameter (SSP) between 0.14×10?4 and 5.0×10?4.Type: GrantFiled: July 14, 2003Date of Patent: March 14, 2006Assignee: Headwaters Nanokinetix, Inc.Inventors: Bing Zhou, Michael Rueter, Sukesh Parasher
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Patent number: 6906212Abstract: Disclosed are novel phosphine-phosphoramidite compounds which may be employed in combination with a catalytically-active metal to effect a wide variety of reactions such as asymmetric hydrogenations, asymmetric reductions, asymmetric hydroborations, asymmetric olefin isomerizations, asymmetric hydrosilations, asymmetric allylations, asymmetric conjugate additions, and asymmetric organometallic additions. Also disclosed are a process for the preparation of the phosphine-phosphoramidite compounds, metal complex compounds comprising at least one of the phosphine-phosphoramidite compounds and a catalytically-active metal and hydrogenation processes utilizing the metal complex compounds.Type: GrantFiled: June 25, 2004Date of Patent: June 14, 2005Assignee: Eastman Chemical CompanyInventor: Neil Warren Boaz
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Patent number: 6824674Abstract: A method for increasing the operational life-time of a pyrolysis gasoline hydrotreating process using a supported Group VIII metal catalyst by employing a catalyst having a significantly increased total surface area.Type: GrantFiled: May 30, 2002Date of Patent: November 30, 2004Assignee: Equistar Chemicals, LPInventor: Mark P. Kaminsky
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Publication number: 20040176653Abstract: Catalysts for the purification of ethylene comprising copper and zinc and, if desired, one or more promoters and supports are produced by precipitation, drying, calcination and pressing, with or without addition of additives, and the pressed catalyst particles are subjected to further calcination at from 300 to 700° C.Type: ApplicationFiled: November 12, 2003Publication date: September 9, 2004Inventors: Gerald Vorberg, Wolfgang Jurgen Popel, Ernest Miesen
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Patent number: 6781023Abstract: Bromine reactive hydrocarbon contaminants are removed from aromatic streams by first providing an aromatic feedstream having a negligible diene level. The feedstream is contacted with an acid active catalyst composition under conditions sufficient to remove mono-olefins. An aromatic stream may be pretreated to remove dienes by contacting the stream with clay, hydrogenation or hydrotreating catalyst under conditions sufficient to substantially remove dienes but not mono-olefins.Type: GrantFiled: June 25, 2001Date of Patent: August 24, 2004Assignee: ExxonMobil Oil CorporationInventors: Stephen H. Brown, Terry E. Helton, Arthur P. Werner
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Patent number: 6777567Abstract: Compounds of the formula (I) and (Ia) in the form of racemates, mixtures of diastereomers or in essentially enantiomerically pure form, (I), (Ia), where R is hydrogen, C1-C8alkyl, C5-C12cycloakyl, phenyl or phenyl substituted by from 1 to 3 C1-C4alky or C1-C4alkoxy groups; n is 0 or an integer from 1 to 4 and R1 are identical or different substituents selected from the group consisting of C1-C4alkyl, C1-C4fluoroalkyl and C1-C4alkoxy; X1 and X2 are each, independently of one another, secondary phosphino; T is C6-C20arylene or C3-C16heteroarylene; and X2 is bound in the ortho position relative to the T-cyclopentadienyl bond.Type: GrantFiled: December 31, 2002Date of Patent: August 17, 2004Assignee: Solvias AGInventors: Walter Weissensteiner, Thomas Sturm, Felix Spindler
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Patent number: 6747181Abstract: The invention relates to a process for the hydrogenation of phenyl acetylene in a styrene-containing medium with the aid of a supported nickel catalyst with a nickel content of 10-25 wt. %. This process is by preference used for the hydrogenation of phenyl acetylene in a styrene-containing medium which contains more that 30 wt. % of styrene.Type: GrantFiled: October 6, 2000Date of Patent: June 8, 2004Assignee: DSM N.V.Inventors: Hubertus J. M. Bosman, Edwin J. Grootendorst, Leonardus H. Postma, Theodorus M. Smeets
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Publication number: 20040015024Abstract: Essentially monounsaturated polyalkylenes having from 30 to 700 carbon atoms are continuously hydroformylated by a process in which i) a hydroformylation-active cobalt carbonyl catalyst is prepared from a catalyst precursor dissolved in an aqueous phase in the absence of the polyalkylenes, ii) the polyalkylenes are hydroformylated by means of synthesis gas in the presence of the cobalt carbonyl catalyst in a reaction zone, iii) the cobalt carbonyl catalyst is separated from the output from the reaction zone with at least partial reformation of the catalyst precursor and the catalyst precursor is recirculated to step i).Type: ApplicationFiled: March 5, 2003Publication date: January 22, 2004Inventors: Michael Roper, Heinrich-Josef Blankertz, Armin Volker Grenacher, Roland Krokoszinski, Willi Schonmann
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Patent number: 6676919Abstract: The invention relates to a method for producing catalysts by immersion coating a metallic support with at least one platinum metal. An aqueous medium which comprises at least one platinum metal complex, at least one reduction agent and at least one complexer and which has a pH value of more than 4 is brought into contact with the metallic support in order to deposit the platinum metal, the platinum metal being deposited in the form of discreet, immobilised particles. The invention also relates to the catalysts obtained using this method and to their use for producing hydrogen peroxide and for hydrogenating organic compounds.Type: GrantFiled: October 4, 2001Date of Patent: January 13, 2004Assignee: BASF AktiengesellschaftInventors: Martin Fischer, Markus Hölzle, Stefan Quaiser, Achim Stammer
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Patent number: 6670515Abstract: A material composed of ultrafine particles, comprising at least a metal element M having catalytic properties and at least a metal element M′ having a standard oxidation potential less than that of M, part at least of M′ atoms being in oxidized form, the average size of the particles being less than 50 nm, at least 80% in number of the particles having an average size less than 10 nm. One particle of the material is constituted by at least a metal element M with oxidation level 0, or by at least a metal element M′ in oxidized form, or by at least a metal element M′ with oxidation level 0, or by the combination of at least two species selected from the three previous species. The material is useful as a catalyst for hydrogenation or coupling reactions.Type: GrantFiled: August 16, 2001Date of Patent: December 30, 2003Assignee: Centre National de la Recherche ScientifiqueInventors: Jean-Marie Dubois, Yves Fort, Olivier Tillement
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Publication number: 20030220186Abstract: The hydrogenation activity of a heteroatom removal catalyst, having activity for both heteroatom removal and hydrogenation, is selectively suppressed by a treatment which comprises contacting the catalyst with (i) hydrogen, (ii) a selectively deactivating agent that suppresses the catalyst's hydrogenation activity, and (iii) a protective agent, such as CO, that preserves and protects the heteroatom removal activity during the treatment. This may be achieved in a reactor while it is on-line and removing heteroatoms from a hydrocarbon feed.Type: ApplicationFiled: February 27, 2003Publication date: November 27, 2003Inventors: Garland B. Brignac, Michele S. Touvelle, William C. Baird
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Patent number: 6632414Abstract: Three-phase chemical hydrogenation reactions involving the processing of gas-liquid reactant feed streams over “mini-structured” solid catalyst beds formed e.g., of channeled honeycomb monoliths incorporating solid catalysts achieve reaction efficiencies suitable for effective integral reactor operation by utilizing low superficial liquid linear velocities and high feedstream gas:liquid ratios; single-pass conversion efficiencies in excess of 50%, typically 80-100%, are achieved.Type: GrantFiled: March 30, 2001Date of Patent: October 14, 2003Assignee: Corning IncorporatedInventor: Wei Liu
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Patent number: 6590115Abstract: Disclosed are substantially enantiomerically pure bis-phosphine compounds comprising a substantially enantiomerically pure chiral backbone linking two phosphine residues wherein one of the phosphine residues has three phosphorus-carbon bonds and the other phosphine residue has two phosphorus-carbon bonds and one phosphorus-nitrogen bond wherein the nitrogen is part of the chiral backbone. The compounds, which have exhibited surprising air stability, are useful as ligands for metal catalysts for asymmetric reactions and have demonstrated excellent results, in particular as rhodium complexes for asymmetric hydrogenation of enamide, itaconate, and &agr;-ketoester compounds. Also disclosed are novel processes for the preparation of the bis-phosphine compounds and novel intermediate compounds useful in the preparation of the bis-phosphine compounds.Type: GrantFiled: September 20, 2001Date of Patent: July 8, 2003Assignee: Eastman Chemical CompanyInventors: Neil Warren Boaz, Sheryl Davis Debenham
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Patent number: 6569318Abstract: The invention relates to a process for conversion of hydrocarbons in the presence of at least one catalyst with controlled acidity, characterized in that the level of activity of said catalyst in isomerization of the cyclohexane is less than 0.10 and/or in that the ratio of toluene hydrogenation activity to the cyclohexane isomerization activity is greater than 10.Type: GrantFiled: February 23, 2001Date of Patent: May 27, 2003Assignee: Institut Francais du PetroleInventors: Virginie Harle, Stéphane Kressmann, Isabelle Guibard, Slavik Kasztelan, Frédéric Morel
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Patent number: 6558533Abstract: The present invention is directed to a method of desulfurization of a sulfur laden hydrocarbon liquids that comprises contacting the liquid with a sponge nickel metal alloy, removing the sulfur free liquid, regeneration of the alloy by contact with an aqueous solution of an oxidant and reusing the alloy for further desulfurization of additional sulfur laden liquid.Type: GrantFiled: April 13, 2001Date of Patent: May 6, 2003Assignee: W.R. Grace & Co.-ConnInventors: Stephen Raymond Schmidt, Richard Franklin Wormsbecher, Robert Hibbard Harding
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Publication number: 20030073874Abstract: Hydrocarbon streams are hydrogenated catalytically without using a different solvent from the hydrocarbon stream to be hydrogenated, with a basic compound being added to the starting-material stream. The formation of undesired secondary components on the catalyst is thereby effectively prevented.Type: ApplicationFiled: October 10, 2002Publication date: April 17, 2003Inventors: Michael Koch, Ekkehard Schwab, Peter Trubenbach, Harald Schafer
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Patent number: 6548721Abstract: Disclosed is a process for completely destroying oxygenates in a feed stream. The feed stream of oxygenates typically includes olefins and it is reacted with hydrogen over a catalyst comprising a top row of Group VIII metal and a Group VI-B metal. Olefins are essentially completely saturated and any sulfur compounds present in the feed are completely converted to hydrogen sulfide. A preferred catalyst includes 2 to 5 wt-% nickel, 5 to 15 wt-% molybdenum, at least 5.5 wt-% sulfur, less than 0.05 wt-% phosphorus and no more than 0.3 wt-% silicon. The catalyst has low acidity and therefore does not promote the cracking of desired oligomeric products. The deoxygenation process is preferably a saturation process that follows an oligomerization process in which light olefins are oligomerized to heavy olefins. The saturation catalyst preferably has lower acidity which causes minimal cracking of desired oligomeric products.Type: GrantFiled: May 22, 2001Date of Patent: April 15, 2003Assignee: UOP LLCInventors: Beth Mc Culloch, Jennifer L. Gordon, Peter Kokayeff, Suheil F. Abdo, Daniel H. Wei
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Patent number: 6503388Abstract: The invention is directed to a process for the hydrogenation of a hydrocarbon feed containing thiophenic sulfur contaminants, wherein the entire feed is contacted with a nickel catalyst, the improvement comprising contacting the said feed additionally with a platinum group metal prior to or simultaneously with contacting the nickel.Type: GrantFiled: May 21, 1998Date of Patent: January 7, 2003Assignee: Engelhard de Meern B.V.Inventor: Bernard Hendrik Reesink
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Patent number: 6455023Abstract: Carbon monolith-supported catalysts with high leach resistance used in catalytic applications involving strong acidic and basic conditions in a pH range of from 0 to 6.5 and from 7.5 to 14, are respectively described. The leach resistance of the catalyst system originates from strong interaction between the catalyst and the unsaturated valence of the carbon surface. In addition to surprisingly high resistance to leach out, the catalysts also have substantial differential advantages in catalyst performance: catalyst activity, selectivity, and stability.Type: GrantFiled: October 11, 2000Date of Patent: September 24, 2002Assignee: Corning IncorporatedInventors: Kishor P. Gadkaree, Tinghong Tao
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Publication number: 20020107424Abstract: A catalyst composition is provided which can be used for hydrogenating a highly unsaturated hydrocarbon such as an alkyne or a diolefin. The catalyst composition contains palladium, a catalyst component of either silver or an alkali metal compound, or both silver and an alkali metal compound, and a metal aluminate catalyst support. Such metal aluminate catalyst support is prepared by a process of incorporating alumina with a metal component, preferably impregnating alumina with a melted metal component, to thereby provide a metal-incorporated alumina followed by drying and high temperature calcining to thereby provide a metal aluminate catalyst support. The catalyst composition disclosed can be used for hydrogenating a highly unsaturated hydrocarbon to a less unsaturated hydrocarbon. The process involves contacting a highly unsaturated hydrocarbon with a catalyst composition in the presence of hydrogen under a hydrogenation condition sufficient to effect a hydrogenation of the highly unsaturated hydrocarbon.Type: ApplicationFiled: December 21, 2001Publication date: August 8, 2002Inventors: Tin-Tack Peter Cheung, Darin B. Tiedtke, Marvin M. Johnson, Gary A. Delzer
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Publication number: 20020065441Abstract: The invention pertains to a process for the hydroprocessing of a hydrocarbon feedstock wherein a catalyst composition is contacted with the feedstock. The catalyst composition comprises bulk catalyst particles comprising at least one Group VIII non-noble metal and at least two Group VIB metals made by a process comprising 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.Type: ApplicationFiled: March 1, 2001Publication date: May 30, 2002Inventors: 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: 6388149Abstract: A process for the reaction of an organic compound in the presence of a catalyst comprising, as active metal, ruthenium alone or together with at least one Group Ib, VIIb, or VIIIb metal in an amount of from 0.01 to 30 wt %, based on the total weight of the catalyst, applied to a support, wherein from 10 to 50% of the pore volume of the support comprises macropores having a pore diameter in the range of from 50 nm to 10,000 nm and from 50 to 90% of the pore volume of the support comprises mesopores having a pore diameter in the range of from 2 to 50 nm, the sum of said pore volumes being 100%, and said catalyst as such.Type: GrantFiled: November 30, 2000Date of Patent: May 14, 2002Assignee: BASF AktiengesellschaftInventors: Thomas Rühl, Boris Breitscheidel, Jochem Henkelmann, Andreas Henne, Rolf Lebkücher, Konrad Knoll, Paul Naegele, Hermann Gausepohl, Sabine Weiguny, Norbert Niessner
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Publication number: 20020016519Abstract: A particulate catalyst suitable for the hydrogenation of fats or oils containing 5 to 75% by weight of nickel may be made by slurrying a transition alumina powder having a surface-weighted mean diameter D[3,2] in the range 1 &mgr;m to 20 &mgr;m with an aqueous solution of a nickel ammine complex, followed by heating to deposit an insoluble nickel compound and then reducing the latter. Catalysts containing up to about 55% by weight of nickel have a nickel surface area above 130 m2/g of nickel. Catalysts having greater nickel contents made using alumina having an average pore diameter above 12 &mgr;m may have a lower nickel surface area but are surprisingly active and selective.Type: ApplicationFiled: August 10, 2001Publication date: February 7, 2002Inventor: Cornelis Martinus Lok
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Patent number: 6331657Abstract: A process for preparing higher oxo alcohols from mixtures of isomeric olefins having from 5 to 24 carbon atoms by two-stage hydroformylation in the presence of a cobalt catalyst or rhodium catalyst at elevated temperature and at elevated pressure, which comprises selectively hydrogenating the first hydroformylation stage reaction mixture, separating the hydrogenation mixture in a distillation into crude alcohol and low-boilers predominantly consisting of olefins, passing these low-boilers to the second hydroformylation stage, again selectively hydrogenating the second hydroformylation stage reaction mixture, separating the hydrogenation mixture in one distillation into crude alcohol and low-boilers, working up the crude alcohol by distillation to pure alcohol and taking off at least some of the low-boilers to discharge saturated hydrocarbons.Type: GrantFiled: September 15, 1999Date of Patent: December 18, 2001Assignee: Oxeno Olefinchemie GmbHInventors: Alfred Kaizik, Bernhard Scholz, Walter Toetsch, Wilfried Bueschken, Franz Nierlich
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Patent number: 6281163Abstract: The invention is directed to hydrogenation catalyst particles based on nickel or cobalt and a support, incorporated in a matrix of hardened oil or a derivative thereof, which matrix material is solid at a temperature of 25° C., said particles having an average weight of at least 120 mg and an average height of at least 2.8 mm.Type: GrantFiled: April 18, 1997Date of Patent: August 28, 2001Assignee: Engelhard de Meern B.V.Inventor: Gustaaf J. M. Van Dijk
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Patent number: 6278034Abstract: A process for hydrogenating long chain hydrocarbons includes continuously feeding a feedstock having long chain hydrocarbons into a slurry bed including a slurry of catalyst particles in a slurrying liquid. The slurry bed is contained in a reaction zone and the feedstock enters the reaction zone at a low level. A hydrogenation component is fed continuously into the slurry bed, at a low level. The hydrogenation component is allowed to react with the feedstock, to hydrogenate the feedstock, as the feedstock and hydrogenation component pass upwardly through the bed. Hydrogenated long chain hydrocarbons are withdrawn from the reaction zone at a high level, as a hydrogenation product. Any excess hydrogenation component is withdrawn from the reaction zone at a high level.Type: GrantFiled: August 11, 1999Date of Patent: August 21, 2001Assignee: Sasol Technology (Proprietary) LimitedInventors: Rafael Luis Espinoza, Andre Peter Steynberg, Samantha Harding, Johan Labuschagne
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Patent number: 6118034Abstract: In the process for the selective hydrogenation of dienes in diene-containing feed streams, a diene-containing feed stream is hydrogenated over a nickel-containing precipitated catalyst at from 40 to 100.degree. C., a pressure of from 3 to 20 bar and a WHSV (weight hourly space velocity) of from 1 to 10 kg/(l.times.h) in the presence of free hydrogen.Type: GrantFiled: September 3, 1998Date of Patent: September 12, 2000Assignee: BASF AktiengesellschaftInventors: Maximilian Vicari, Marc Walter, Ekkehard Schwab, Hans-Joachim Muller, Germain Kons, Stephan Dilling, Peter Polanek
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Patent number: 5865985Abstract: A process for the production of a diesel fuel includes contacting a feedstock comprising cracked stocks in the presence of hydrogen under conditions of elevated temperature and pressure with a first catalyst comprising a Group VI hydrogenation metal component and a Group VIII hydrogenation metal component on a substantially non-acidic carrier, and then contacting at least a portion of the effluent from the first catalyst with a second catalyst comprising a Group VI hydrogenation metal component and a Group VIII hydrogenation metal component on an acidic carrier. This process can produce diesel fuels having an improved cetane index and API gravity. The effluent from the second catalyst bed may be contacted with a third catalyst bed which contains a catalyst comprising a Group VI hydrogenation metal component and a Group VIII hydrogenation metal component on a substantially non-acidic carrier.Type: GrantFiled: February 14, 1997Date of Patent: February 2, 1999Assignee: Akzo Nobel NVInventors: Pankaj Himatlal Desai, Johannes Wilhelmus Sonnemans, Terry Allan Reid
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Patent number: 5856603Abstract: The invention is directed to a process for the production of cyclohexane by catalytic hydrogenation of benzene using hydrogen, said process comprising the hydrogenation of benzene in the presence of a supported nickel catalyst having a nickel content of at least 10 wt. %, calculated as nickel, said catalyst containing sulfur, or compounds thereof, as promotor.Type: GrantFiled: June 19, 1997Date of Patent: January 5, 1999Assignee: Engelhard CorporationInventors: Tjalling Rekker, Bernard Hendrik Reesink, Frederik Borninkhof
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Patent number: 5851383Abstract: A light hydrocarbon stream, such as a C.sub.3 -C.sub.5 stream recovered from an FCC unit, is catalytically treated for the selective hydrogenation of dienes and for the removal of mercaptans by thioetherification. The effluent of the reaction zone is fractionated to remove light ends and thioethers in a dual section fractionation zone, with the interconnection of the sections facilitating a reduction in capital and operating costs.Type: GrantFiled: December 15, 1997Date of Patent: December 22, 1998Assignee: UOP LLCInventor: Stanley J. Frey
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Patent number: 5852130Abstract: A novel catalytic composition comprises at least one quaternary ammonium and/or phosphonium salt in which the anion is selected from the group formed by tetrafluoroborate, tetrachloroborate, hexafluorophosphate, hexafluoroantimonate, hexafluoroarsenate, trifluorosulphonate, fluorosulphonate, tetrachloroaluminate, dichlorocuprate, and trichlorozincate, and at least one complex of a transition metal from groups 8, 9 and 10, i.e., iron, ruthenium, cobalt, rhodium iridium, nickel, palladium and platinum. Application to total or selective hydrogenation of unsaturated compounds such as monoolefins, diolefins, acetylenic compounds, aromatic compounds, polynuclear aromatic compounds. Hydrogenation may be accompanied by isomerisation.Type: GrantFiled: June 17, 1996Date of Patent: December 22, 1998Assignee: Institut Francais du PetroleInventors: Lothar Mussmann, Yves Chauvin, Helene Olivier
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Patent number: 5841012Abstract: High space velocity catalysts useful in the substantial elimination of chloroprene and trichloroethylene from an industrial product stream of ethane dichloride; the last is useful in the production of vinyl chloride.Type: GrantFiled: January 2, 1997Date of Patent: November 24, 1998Assignee: Saudi Basic Industries CorporationInventors: Hicham Idriss, Adbulrahman Saleh Al-Ubaid, Saeed Mohammed Al-Wahabi, Khalid El Yahyaoui
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Patent number: 5831138Abstract: The present invention is directed toward a catalyst composition comprising a catalyst prepared by a process comprising: (a) impregnating an oxide precursor selected from the group consisting of rare earth oxide precursors, yttria precursors and mixtures thereof, onto an inorganic refractory oxide support; (b) drying said support at a temperature of about 100.degree. to about 120.degree. C. followed by calcining said support at a temperature of about 400.degree. to about 600.degree. C.; and (c) compositing or depositing on said support of step (b), a catalyst precursor salt represented by (ML)(Mo.sub.y W.sub.1-y O.sub.4).sub.a wherein M comprises Cr and/or one or more divalent promoter metals selected from the group consisting of Mn, Fe, Co, Ni, Cu, Zn and mixtures thereof, wherein y is any value ranging from 0 to 1, and wherein L is one or more neutral, nitrogen-containing ligands at least one of which is a chelating polydentate ligand; a=1 when chromium is not one of the promoter metals and 0.5.ltoreq.a.Type: GrantFiled: August 15, 1997Date of Patent: November 3, 1998Assignee: Exxon Research and Engineering CompanyInventors: Teh Chung Ho, Stuart Leon Soled, Sabato Miseo, Gary Brice McVicker, Michel Daage, Viktor Buchholz
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Patent number: 5817900Abstract: The color of hydrocarbon resins having carbon-carbon double bonds and containing color bodies is lightened by a hydrotreating process consisting essentially of contacting the resin with hydrogen at a hydrogen pressure of 1 to about 20 bar (14.5 to about 290 psi) in the presence of a catalyst that promotes the hydrogenation of the color bodies without substantially changing the softening point or the content of carbon-carbon double bonds in the resin. The preferred catalyst is nickel/zinc oxide on SiO.sub.2.Type: GrantFiled: February 1, 1996Date of Patent: October 6, 1998Assignee: Hercules IncorporatedInventors: Erik Berrevoets, Jan van Drongelen
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Patent number: 5759386Abstract: A light hydrocarbon stream, such as a C.sub.3 -C.sub.5 stream recovered from an FCC unit, is catalytically treated for the selective hydrogenation of dienes and for the removal of mercaptans by thioetherification. The effluent of the reaction zone is fractionated to remove light ends and thioethers in a dual section fractionation zone, with the interconnection of the sections facilitating a reduction in capital and operating costs.Type: GrantFiled: January 9, 1997Date of Patent: June 2, 1998Assignee: UOPInventor: Stanley J. Frey
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Patent number: 5689021Abstract: Halonitroaromatic compounds, e.g., 3-chloro-4-fluoronitrobenzene, are selectively hydrogenated into the corresponding haloaromatic amines, in the essential absence of hydrodehalogenation, by reacting same with hydrogen in the presence of a catalytically effective amount of a novel Raney-type catalyst composition consisting essentially of an alloy of nickel, aluminum and molybdenum, Ni/Al/Mo, the Al/Mo ratio by weight thereof being equal to or greater than 1.Type: GrantFiled: March 26, 1996Date of Patent: November 18, 1997Assignee: Rhone-Poulenc ChimieInventors: Georges Cordier, Jean-Pierre Damon, Pierre Fouilloux, Philippe Marion
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Patent number: 5648577Abstract: The present invention is directed toward a catalyst composition prepared by a process comprising: (a) impregnating an oxide precursor selected from the group consisting of rare earth oxide precursors, yttria precursors and mixtures thereof, onto an inorganic refractory oxide support; (b) drying said support at a temperature of about 100.degree. to about 120.degree. C. followed by calcining said support at a temperature of about 400.degree. to about 600.degree. C.; and (c) compositing or depositing on said support of step (b), a catalyst precursor salt represented by (ML)(Mo.sub.y W.sub.1-y O.sub.4).sub.a wherein M comprises Cr and/or one or more divalent promoter metals selected from the group consisting of Mn, Fe, Co, Ni, Cu, Zn and mixtures thereof, wherein y is any value ranging from 0 to 1, and wherein L is one or more neutral, nitrogen-containing ligands at least one of which is a chelating polydentate ligand; a=1 when chromium is not one of the promoter metals and 0.5.ltoreq.a.ltoreq.Type: GrantFiled: June 2, 1995Date of Patent: July 15, 1997Assignee: Exxon Research and Engineering CompanyInventors: Teh Chung Ho, Stuart Leon Soled, Sabato Miseo, Gary Brice McVicker, Michel Daage, Viktor Buchholz
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Patent number: 5583240Abstract: An exothermic process for forming a product which may be in a liquid phase is disclosed wherein a first reactant, preferably a liquid reactant, is directly fed into a reaction zone containing mixing elements and which comprises a first compartment of a reactor. A second reactant, which is maintained at a higher pressure, is fed into a second compartment of the reactor separated from the first compartment by a porous wall. The second reactant passes through this porous wall into the reaction zone to react with the first reactant. The process thereby controls rates of the reactions and the exothermic heats generated by the reactions. Pulsatile flow in one or both reaction compartments improves mixing. An evaporator for a portion of the product improves product quality and permits higher reaction temperatures in the reactor.Type: GrantFiled: March 2, 1994Date of Patent: December 10, 1996Assignee: SRI InternationalInventors: William J. Asher, Daryl L. Roberts, Jerry L. Jones, Douglas E. Gottschlich
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Patent number: 5414171Abstract: This is a catalyst and a process for partially hydrogenating polycyclic and monocyclic aromatic hydrocarbons such as benzene, naphthalenes, biphenyls, and alkylbenzenes to produce the corresponding cycloolefins. The catalyst is a hydrogenation catalyst comprising ruthenium and a promoter metal, such as cobalt, on a composite support. It is a process in which the product cycloolefin is produced in high yield and with high selectivity.Type: GrantFiled: February 26, 1992Date of Patent: May 9, 1995Assignee: Catalytica, Inc.Inventors: Michael A. Richard, Jacques C. De Deken, David K. Yee
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Patent number: 5347027Abstract: The present invention provides an electroless process for making a catalyst in a liquid or gaseous medium comprising contacting a base metal with a chemical cleaning agent and simultaneously or sequentially treating said base metal under reducing conditions with a noble metal-containing material, the catalyst prepared using the process, and a method of using the catalyst.Type: GrantFiled: April 22, 1993Date of Patent: September 13, 1994Assignee: OSi Specialties, Inc.Inventors: James S. Ritscher, Wei T. Yang, George M. Omietanski, Robert L. Ocheltree, Earl E. Malson
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Patent number: 5334790Abstract: This is a catalyst and a process for partially hydrogenating polycyclic and monocyclic aromatic hydrocarbons such as benzene, naphthalenes, biphenyls, and alkylbenzenes to produce the corresponding cycloolefins. The catalyst is a hydrogenation catalyst comprising ruthenium on a composite support. It is a process in which the product cycloolefin is produced in high yield and with high selectivity.Type: GrantFiled: February 26, 1992Date of Patent: August 2, 1994Assignee: CatalyticaInventors: Michael A. Richard, Jacques De Deken, David K. Yee
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Patent number: 5334791Abstract: A process is provided for hydrogenating a non-aromatic unsaturated hydrocarbon, comprising reacting the hydrocarbon with a catalyst precursor which includes a source of a group VIIIB transition metal from the second or third rows of the periodic table and a heterobifunctional ligand constructed with a phosphine center and an imine nitrogen center, in the presence of hydrogen and a promoter selected from secondary or tertiary acyclic alkyl amines in a suitable solvent which solubilizes the hydrocarbon, the catalyst precursor, the hydrogen, and the promoter.Type: GrantFiled: May 22, 1992Date of Patent: August 2, 1994Assignee: Ligands Inc.Inventors: Ronald G. Cavell, David J. Law, Robert W. Reed
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Patent number: 5081083Abstract: Alternate, successive high temperature oxidation and reduction treatments, in either order, of intermetallic alloy hydrogenation and intermetallic alloy oxidation catalysts unexpectedly improves the impurity poisoning resistance, regeneration capacity and/or activity of the catalysts. The particular alloy, and the final high temperature treatment given alloy (oxidation or reduction) will be chosen to correspond to the function of the catalyst (oxidation or hydrogenation).Type: GrantFiled: February 12, 1990Date of Patent: January 14, 1992Assignee: The United States of America as represented by the Secretary of the Department of EnergyInventor: Randy B. Wright
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Patent number: 5043498Abstract: A process for the hydrogenation of conjugated diene polymers having alcoholic hydroxyl groups, is provided. In the process, reduced nickel is used as a catalyst and an ether or a mixture of an ether and a hydrocarbon is used as a solvent for the hydrogenation reaction whereby elimination of the group rarely occurs with a very high hydrogenation rate being attained.Type: GrantFiled: December 7, 1988Date of Patent: August 27, 1991Assignee: Kuraray Company Ltd.Inventors: Masao Ishii, Hideo Takamatsu, Kazushige Ishiura, Shobu Minatono