With Other Transition Metal Patents (Class 585/631)
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Patent number: 8927674Abstract: Disclosed herein are cobalt complexes containing terdentate pyridine di-imine ligands and their use as efficient and selective dehydrogenative silylation and crosslinking catalysts.Type: GrantFiled: August 14, 2013Date of Patent: January 6, 2015Assignees: Princeton University, Momentive Performance Materials Inc.Inventors: Cristia Carmen Hojilla Atienza, Paul J. Chirik, Susan Nye, Kenrick M. Lewis, Keith J. Weller, Julie L. Boyer, Johannes G. P. Delis, Aroop Roy, Eric Pohl
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Patent number: 8546634Abstract: There is provided a method for production of a conjugated diene from a monoolefin having four or more carbon atoms by a fluidized bed reaction. The method for production of a conjugated diolefin includes bringing a catalyst in which an oxide is supported on a carrier into contact with a monoolefin having four or more carbon atoms in a fluidized bed reactor in which the catalyst and oxygen are present, wherein the method satisfies the following (1) to (3): (1) the catalyst contains Mo, Bi, and Fe; (2) a reaction temperature is in the range of 300 to 420° C.; and (3) an oxygen concentration in a reactor outlet gas is in the range of 0.05 to 3.0% by volume.Type: GrantFiled: September 29, 2010Date of Patent: October 1, 2013Assignee: Asahi Kasei Chemicals CorporationInventors: Hideo Midorikawa, Hiroyuki Yano, Takashi Kinoshita
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Patent number: 8513479Abstract: The present invention relates to a zinc ferrite catalyst, a method of producing the same, and a method of preparing 1,3-butadiene using the same. Specifically, the present invention relates to a zinc ferrite catalyst which is produced in a pH-adjusted solution using a coprecipitation method, a method of producing the same, and a method of preparing 1,3-butadiene using the same, in which the 1,3-butadiene can be prepared directly using a C4 mixture including n-butene and n-butane through an oxidative dehydrogenation reaction. The present invention is advantageous in that 1,3-butadiene can be obtained at a high yield directly using a C4 fraction without performing an additional process for separating n-butene, as a reactant, from a C4 fraction containing impurities.Type: GrantFiled: May 8, 2008Date of Patent: August 20, 2013Assignees: SK Global Chemical Co., Ltd, SK Innovation Co., Ltd.Inventors: Young Min Chung, Seong Jun Lee, Tae Jin Kim, Seung Hoon Oh, Yong Seung Kim, In Kyu Song, Hee Soo Kim, Ji Chul Jung, Ho Won Lee
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Patent number: 8420878Abstract: The present invention relates to a complex oxide catalyst of Bi/Mo/Fe and an oxidative dehydrogenation of 1-butene in the presence of a catalyst herein. A catalyst of the present invention is superior to the conventional Bi/Mo catalyst in thermal and mechanical stabilities, conversion and selectivity toward 1,3-butadiene, while showing a long-term catalytic activity.Type: GrantFiled: October 13, 2009Date of Patent: April 16, 2013Assignee: Korea Kumho Petrochemical Co., Ltd.Inventors: Chae-Ho Shin, Jung-Hyun Park, Eunae Noh, Kyoungho Row, Ji Won Park
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Patent number: 8222472Abstract: A method of producing 1,3-butadiene by the oxidative dehydrogenation of n-butene using a continuous-flow dual-bed reactor designed such that two kinds of catalysts charged in a fixed-bed reactor are not physically mixed. More particularly, a method of producing 1,3-butadiene by the oxidative dehydrogenation of n-butene using a C4 mixture including n-butene and n-butane as reactants and using a continuous-flow dual-bed reactor in which a multi-component bismuth molybdate catalyst and a zinc ferrite catalyst having different reaction activity in the oxidative dehydrogenation reaction of n-butene isomers (1-butene, trans-2-butene, cis-2-butene).Type: GrantFiled: February 9, 2009Date of Patent: July 17, 2012Assignees: SK Innovation Co., Ltd., SNU R&DB FoundationInventors: Young Min Chung, Yong Tak Kwon, Tae Jin Kim, Seong Jun Lee, Yong Seung Kim, Seung Hoon Oh, In Kyu Song, Hee Soo Kim, Ji Chul Jung, Ho Won Lee
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Patent number: 8003840Abstract: This invention relates to a bismuth molybdate catalyst, a preparation method thereof, and a method of preparing 1,3-butadiene using the same, and to a bismuth molybdate catalyst, a preparation method thereof, and a method of preparing 1,3-butadiene using the same, in which 1,3-butadiene can be prepared through oxidative dehydrogenation directly using a C4 mixture including n-butene and n-butane as a reactant in the presence of a mixed-phase bismuth molybdate catalyst including ?-bismuth molybdate (Bi2Mo3On) and ?-bismuth molybdate (Bi2MoO6). According to this invention, the C4 raffinate, containing many impurities, is used as a reactant, without an additional n-butane separation process, thus obtaining 1,3-butadiene at high yield.Type: GrantFiled: March 16, 2007Date of Patent: August 23, 2011Assignees: SK Innovation Co., Ltd., SK Global Chemical Co., Ltd.Inventors: Seung Hoon Oh, Seong Jun Lee, Tae Jin Kim, Ahn Seop Choi, Young Min Chung, In Kyu Song, Ji Chul Jung, Hee Soo Kim
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Publication number: 20100099936Abstract: The present invention relates to a complex oxide catalyst of Bi/Mo/Fe and an oxidative dehydrogenation of 1-butene in the presence of a catalyst herein. A catalyst of the present invention is superior to the conventional Bi/Mo catalyst in thermal and mechanical stabilities, conversion and selectivity toward 1,3-butadiene, while showing a long-term catalytic activity.Type: ApplicationFiled: October 13, 2009Publication date: April 22, 2010Inventors: Chae-Ho SHIN, Jung-Hyun Park, Eunae Noh, Kyoungho Row, Ji Won Park
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Patent number: 7626068Abstract: Catalysts and methods for alkane oxydehydrogenation are disclosed. The catalysts of the invention generally comprise (i) nickel or a nickel-containing compound and (ii) at least one or more of titanium (Ti), tantalum (Ta), niobium (Nb), hafnium (Hf), tungsten (W), yttrium (Y), zinc (Zn), zirconium (Zr), or aluminum (Al), or a compound containing one or more of such element(s). In preferred embodiments, the catalyst is a supported catalyst, the alkane is selected from the group consisting of ethane, propane, isobutane, n-butane and ethyl chloride, molecular oxygen is co-fed with the alkane to a reaction zone maintained at a temperature ranging from about 250° C. to about 350° C., and the ethane is oxidatively dehydrogenated to form the corresponding alkene with an alkane conversion of at least about 10% and an alkene selectivity of at least about 70%.Type: GrantFiled: April 11, 2007Date of Patent: December 1, 2009Assignee: Celanese International CorporationInventor: Yumin Liu
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Patent number: 7601881Abstract: 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 tungstated oxide or hydroxide of a Group IVB (IUPAC 4) metal, a phosphorus component, and at least one platinum-group metal component which is preferably platinum. The catalyst has a structure other than a heteropoly anion structure.Type: GrantFiled: January 30, 2008Date of Patent: October 13, 2009Assignee: UOP LLCInventors: Ralph D. Gillespie, Feng Xu
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Patent number: 7279611Abstract: One aspect of the invention relates to a dehydrogenation catalyst composite containing alumina, chromium oxide, lithium oxide, and sodium oxide. The invention also relates to methods of making the dehydrogenation catalyst composite. Another aspect of the invention relates to method of dehydrogenating a dehydrogenatable hydrocarbon involving contacting the dehydrogenatable hydrocarbon with a dehydrogenation catalyst composite containing alumina, chromium oxide, lithium oxide, and sodium oxide to provide a dehydrogenated hydrocarbon, such as an olefin.Type: GrantFiled: December 12, 2005Date of Patent: October 9, 2007Assignee: BASF Catalysts LLCInventors: Saeed Alerasool, Harold E. Manning
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Patent number: 6921831Abstract: Modified lead/bismuth/molybdate catalysts containing vanadium, copper, or gold have been prepared, and are selective to the corresponding furan compound from the gas phase oxidation of an unsaturated acyclic hydrocarbon such as butadiene.Type: GrantFiled: January 15, 2003Date of Patent: July 26, 2005Assignee: E. I. du Pont de Nemours and CompanyInventors: Kostantinos Kourtakis, Patrick Mills, Carl Z. Cao
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Patent number: 6600082Abstract: A process for dehydrogenating organic compounds, in particular paraffins and naphthenes, is carried out in the presence of a supported catalyst comprising a group VIII metal such as platinum, and tin, at least a portion of which interacts strongly with the group VIII metal in the catalyst in the reduced state. In the partially oxidised state, the catalyst contains at least 10% of tin in the form of a reduced tin species with oxidation state 0, said species having an isomer shift in the range 0.80 to 2.60 mm/s and a quadrupolar splitting in the range 0.65 to 2.00 mm/s.Type: GrantFiled: August 23, 2001Date of Patent: July 29, 2003Assignee: Institut Francais du PetroleInventors: Fabienne Le Peltier, Blaise Didillon, Jean-Claude Jumas, Josette Olivier-Fourcade
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Patent number: 5962757Abstract: Dehydrogenation catalysts are prepared by a predoping process comprising, mixing iron oxide materials with a predopant to form a blend of iron oxide and predopant and heating the blend to the predoping conditions and thereafter forming a catalyst. The catalysts so prepared are useful in the dehydrogenation of a composition having at least one carbon--carbon double bond. Such catalytic uses include the conversion of ethylbenzene to styrene.Type: GrantFiled: April 17, 1997Date of Patent: October 5, 1999Assignee: Shell Oil CompanyInventors: Stanley Nemec Milam, Brent Howard Shanks
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Patent number: 5672801Abstract: The present invention concerns a regeneration process for a catalyst containing at least one metallic element selected from the group formed by platinum, palladium, ruthenium, rhodium, osmium, iridium and nickel, preferably platinum, on a refractory oxide based support, which has been deactivated by coke deposition. The regeneration process is characterised in that said regeneration consists of treatment with a gas containing at least chlorine and molecular oxygen, at a temperature between 20.degree. C. and 800.degree. C. and a total gas flow rate, expressed in litres of gas per hour and per gram of catalyst, of between 0.05 and 20. The process at least restores the initial catalytic properties of the catalyst.Type: GrantFiled: August 6, 1996Date of Patent: September 30, 1997Assignee: Institut Francais Du PetroleInventor: Blaise Didillon
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Patent number: 5639926Abstract: A process for producing a branched chain olefin which comprises isomerising and transhydrogenating a hydrocarbon stream containing at least one straight chain paraffin of 4 or more carbon atoms by contacting the same at elevated temperature with a stream containing a hydrogen acceptor that is more highly unsaturated than a mono-olefin to produce a stream containing at least one branched chain olefin product. The product is separated to give a stream depleted of the product. The thus depleted stream is recycled to the isomerising and transhydrogenating stages. The hydrogen acceptor stream may comprise a diene and/or acetylene.Type: GrantFiled: January 4, 1995Date of Patent: June 17, 1997Assignee: Institut Francais Du PetroleInventors: Stephen Keith Turner, Arthur Gough
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Patent number: 5585530Abstract: A process for the production of olefins comprises dehydrogenating at least one hydrogen-donor hydrocarbon that is essentially free from olefinic unsaturation, e.g. a paraffin, in the presence of a dehydrogenation catalyst and in the presence of at least one hydrogen-acceptor hydrocarbon that is more highly unsaturated than a mono-olefin, e.g. a diene and/or acetylene, under conditions effective to cause at least part of said hydrogen-donor hydrocarbon to be dehydrogenated and at least part of the hydrogen-acceptor to be hydrogenated. The amount of hydrogen-acceptor is such that there are 0.5 to 20 moles of said hydrogen-donor for each mole of hydrogen-acceptor. Preferably the amount of said hydrogen-acceptor hydrocarbon hydrogenated is such that the heat of hydrogenation of said hydrogen-acceptor hydrocarbon provides at least 25% of the heat required for dehydrogenation of said hydrogen-donor hydrocarbon. In a preferred form of the invention, a hydrocarbon stream containing a hydrogen-acceptor is a C.sub.Type: GrantFiled: June 8, 1994Date of Patent: December 17, 1996Assignee: Institut Francais Du PetroleInventors: Arthur Gough, Stephen K. Turner
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Patent number: 5378350Abstract: Process and catalyst for dehydrogenation or dehydrocyclization of hydrocarbons. The catalyst consists of an aluminum oxide/chromium oxide support with promotors consisting of compounds of alkali metals and/or alkaline earth metals and compounds of metals from the third and/or fourth subgroups of the periodic table. Coke formation and side reactions can be substantially suppressed by the use of these catalysts under special operating conditions and special reactors.Type: GrantFiled: August 9, 1991Date of Patent: January 3, 1995Assignee: Linde AktiengesellschaftInventors: Heinz Zimmermann, Frederik Versluis
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Patent number: 5354935Abstract: A catalyst comprising a preshaped porous support material having applied thereto in finely divided form an active compound chosen from at least one compound of vanadium, chromium, manganese, iron, cobalt, nickel, copper and zinc, and optionally a promoter chosen from at least an alkali or alkaline earth metal compound, method for the preparation thereof and use thereof in the dehydrogenation of hydrocarbons.Type: GrantFiled: August 12, 1993Date of Patent: October 11, 1994Assignee: The Dow Chemical CompanyInventors: Frederik R. Van Buren, Dick E. Stobbe, John W. Geus, Adrianus J. Van Dillen
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Patent number: 5302773Abstract: A process for preparing olefins and diolefins in high productivity which involves contacting an aliphatic hydrocarbon, such as butane, with a heterogeneous catalyst composition containing reactive oxygen under reaction conditions sufficient to produce a more highly unsaturated aliphatic hydrocarbon, such as 1,3-butadiene. The catalyst composition contains a glassy silica matrix of specified surface area and macro-porosity into which are encapsulated domains of a catalyst component containing oxides of magnesium and molybdenum. The catalyst has high crush strength and is useful in transport reactors.Type: GrantFiled: November 26, 1991Date of Patent: April 12, 1994Assignee: The Dow Chemical CompanyInventors: G. Edwin Vrieland, Stephen J. Doktycz, Bijan Khazai
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Patent number: 5258347Abstract: A process for the production of olefins and diolefins, such as 1,3-butadiene, comprising contacting an aliphatic hydrocarbon, such as butane, with a heterogeneous catalyst composition containing reactive oxygen under reaction conditions such that a more highly unsaturated aliphatic hydrocarbon is selectively formed in a high productivity. The catalyst is a composition comprising (a) a support component of magnesia and alumina and/or magnesium aluminate spinel, and (b) a catalyst component of magnesia, an oxide of molybdenum, a Group IA metal oxide promoter, and optionally vanadium oxide. Catalysts of high surface area and high attrition resistance are claimed.Type: GrantFiled: May 29, 1992Date of Patent: November 2, 1993Assignee: The Dow Chemical CompanyInventors: Bijan Khazai, Craig B. Murchison, G. Edwin Vrieland
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Patent number: 5146031Abstract: A process for the production of olefins and diolefins, such as 1,3-butadiene, comprising contacting an aliphatic hydrocarbon, such as butane, with a heterogeneous catalyst composition containing reactive oxygen under reaction conditions such that a more highly unsaturated aliphatic hydrocarbon is selectively formed in a high productivity. The catalyst is a composition comprising (a) a support component of magnesia and alumina and/or magnesium aluminate spinel, and (b) a catalyst component of magnesia, an oxide of molybdenum, a Group IA metal oxide promoter, and optionally vanadium oxide. Catalysts of high surface area and high attrition resistance are claimed.Type: GrantFiled: April 6, 1990Date of Patent: September 8, 1992Assignee: The Dow Chemical CompanyInventors: Bijan Khazai, G. Edwin Vrieland, Craig B. Murchison, Ravi S. Dixit, Edwin D. Weihl
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Patent number: 5053580Abstract: Metal oxide powders comprised of Cr(III) oxide, Ti(IV) oxide, V(V) oxide, or mixtures of these, or metal mixed oxides comprised of Cr(III) oxide and Ti(IV) oxide and V(V) oxide, or their mixtures. They have BET surfaces of 5-50m.sup.2 /g and mean particle diameters of 25-350 nm and are useful to increase conversion and selectivity in the manufacture of mono-olefins by catalytic dehydrogenation of saturated hydrocarbons. The metal oxide powders are produced from mixtures of the vaporized metal compounds chromyl chloride, titanium tetrachloride, and vanadyl chloride, in the presence of certain gases by laser pyrolysis.Type: GrantFiled: May 7, 1990Date of Patent: October 1, 1991Assignee: Veba Oel AktiengesellschaftInventors: Bernhard Schramm, Jurgen Kern, Harald Schwahn, August-Wilhelm Preuss, Klaus Gottlieb, Hartmut Bruderreck
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Patent number: 4996387Abstract: A process for producing a dehydrogenated hydrocarbon product stream by catalytically dehydrogenating a feed stream is disclosed. The process utilizes a plurality of dehydrogenation catalyst-filled tubes in a furnace with all of the tubes connected in parallel to a common product outlet conduit, so that the effluent of all of the tubes is contained in a common product stream. Essentially continuous regeneration of the dehydrogenation catalyst, is achieved by cyclically contacting a portion of the catalyst with an admixture of oxygen-containing regeneration gas and diluent while contacting the remaining portion of the catalyst with an admixture of hydrocarbon feed material and diluent, and wherein free hydrogen is added to react with the oxygen-containing regeneration effluent gas before the oxygen-containing effluent gas enters the product stream.Type: GrantFiled: July 20, 1989Date of Patent: February 26, 1991Assignee: Phillips Petroleum CompanyInventors: Bruce W. Gerhold, Richard L. Anderson
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Patent number: 4973791Abstract: A process for the production of unsaturated aliphatic hydrocarbons, such as diolefins, comprising contacting an aliphatic hydrocarbon, such as an alkane or a monoolefin, with a solid heterogeneous catalyst containing labile oxygen under reaction conditions such that a more highly unsaturated aliphatic hydrocarbon is selectively formed in a high space-time yield. The catalyst comprises an oxide of magnesium, an oxide of molybdenum, an alkali metal promoter, and optionally an oxide of vanadium. For example, butane is oxidized in the presence of magnesium molybdate doped with alkali metal oxide to a mixture of products including predominantly butadiene and cis-2-butene and trans-2-butene.Type: GrantFiled: July 20, 1989Date of Patent: November 27, 1990Assignee: The Dow Chemical CompanyInventors: G. Edwin Vrieland, Craig B. Murchison
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Patent number: 4618593Abstract: A regeneration process for tellurium-containing metal oxide catalysts used in the process for oxidation, ammoxidation or oxidative dehydrogenation of organic compounds at a temperature of about 300.degree. C. to about 600.degree. C. The process can be effectively applied to such catalysts which have become partially deactivated during the reaction.Type: GrantFiled: May 17, 1982Date of Patent: October 21, 1986Assignee: Nitto Chemical Industry Co., Ltd.Inventors: Yutaka Sasaki, Yutaka Kiyomiya, Toshio Nakamura
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Patent number: 4536483Abstract: Iron-antimony metallic oxide catalysts which have become deactivated after being used for the production of aldehydes, acids, nitriles, or dienes through oxidation, ammoxidation, or oxidative dehydrogenation of organic compounds in fluidized-bed reactors are regenerated by adding to the catalyst a solid molybdenum component which is volatile or capable of forming a volatile compound under reaction conditions. The metallic oxide catalysts contain as essential components (I) Fe, (II) Sb, (III) at least one element selected from the group consisting of V, MO, and W, and (IV) Te.Type: GrantFiled: October 26, 1983Date of Patent: August 20, 1985Assignee: Nitto Chemical Industry Co., Ltd.Inventors: Yutaka Sasaki, Yutaka Kiyomiya, Toshio Nakamura, Yoshimi Nakamura, Masanori Yamaguchi
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Patent number: 4423281Abstract: In a process for producing a conjugated diolefin which comprises oxidatively dehydrogenating a monolefin having at least 4 carbon atoms in the vapor phase with molecular oxygen to form the corresponding conjugated diolefin; the improvement wherein the oxidative dehydrogenation is carried out in the presence of a catalyst having the general composition formulaMo.sub.a Bi.sub.b Cr.sub.c Ni.sub.d X.sub.e Y.sub.f O.sub.gwherein X represents at least one element selected from Li, Na, K, Rb, Cs, Tl and P, Y represents at least one element selected from Al, Ga, Zr, Pb, Nb, Ta, Hf and Mn, and a, b, c, d, e, f and g respectively represent the number of Mo, Bi, Cr, Ni, X, Y and O atoms, and when a=12, b=0.05-20, c=0.05-20, d=0.1-30, e=0.01-10, f=0.01-20, and g is the number of oxygen atoms which satisfies the atomic valences of the other elements.Type: GrantFiled: March 31, 1981Date of Patent: December 27, 1983Assignee: Nippon Zeon Co. Ltd.Inventors: Haruhisa Yamamoto, Nobuaki Yoneyama
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Patent number: 4413155Abstract: Oxide complex catalysts comprising Fe-Sb-Bi-O.sub.x promoted with a wide variety of different elements have been found to be especially useful in the ammoxidation of olefins to nitriles such as acrylonitrile and methacrylonitrile. Not only are the desired nitriles obtained with high yields when these catalysts are used, but also the production of unwanted liquid byproducts such as acrolein, acrylic acid and acetonitrile is significantly reduced.Type: GrantFiled: March 30, 1981Date of Patent: November 1, 1983Assignee: The Standard Oil Co.Inventors: Dev D. Suresh, Robert K. Grasselli, David A. Orndoff
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Patent number: 4395579Abstract: The preparation of a compound of formula R.sup.1 --C(R.sup.2).dbd.CH.sub.2 (R.sup.1 and R.sup.2 are a phenyl, alkyl or alkenyl group or a hydrogen atom) by contacting a mixture of steam and a compound of formula R.sup.1 --C(R.sup.2)(H)--CH.sub.3 at elevated temperature under non-oxidative dehydrogenation conditions with a catalyst having a spinel structure allows lower ratios steam to compound of formula R.sup.1 --C(R.sup.2)(H)--CH.sub.3, a higher selectivity to the compound of formula R.sup.1 --C(R.sup.2).dbd.CH.sub.2 and a lower temperature when lithium is present in the spinel structure.Type: GrantFiled: November 4, 1982Date of Patent: July 26, 1983Assignee: Shell Oil CompanyInventors: Gilbert R. Germaine, Jean P. Darnanville
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Patent number: 4336409Abstract: In a process for producing a conjugated diolefin which comprises oxidatively dehydrogenating a monolefin having at least 4 carbon atoms in the vapor phase with molecular oxygen to form the corresponding conjugated diolefin; the improvement wherein the oxidative dehydrogenation is carried out in the presence of a catalyst having the general composition formulaMo.sub.a Bi.sub.b Cr.sub.c Ni.sub.d X.sub.e Y.sub.f O.sub.gwherein X represents at least one element selected from Li, Na, K, Rb, Cs, Tl and P, Y represents at least one element selected from metal elements of Group II of the periodic table, and a, b, c, d, e, f and g respectively represent the number of Mo, Bi, Cr, Ni, X, Y and O atoms, and when a=12, b=0.05-20, c=0.05-20, d=0.1-30, e=0.01-10, f=0.01-20, and g is the number of oxygen atoms which satisfies the atomic valences of the other elements.Type: GrantFiled: April 17, 1981Date of Patent: June 22, 1982Assignee: Nippon Zeon Co. Ltd.Inventors: Haruhisa Yamamoto, Shinji Matumoto
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Patent number: 4334116Abstract: Dehydrogenatable hydrocarbons are dehydrogenated by contacting them at dehydrogenation conditions in the presence of a complex oxide catalyst comprising molybdenum, copper and tin and at least one element selected from the group consisting of Li, Na, K, Rb, Cs, Mg, Ca, Sr, Ba, La, Ce, Th and U. For example, an alkyl aromatic hydrocarbon, e.g. ethylbenzene, can be dehydrogenated to an alkenyl aromatic hydrocarbon, e.g. styrene, in the presence of an oxide complex catalyst comprising molybdenum, copper, tin and at least one element selected from the group consisting of K, Cs, Ba, Mg and Ca.Type: GrantFiled: April 27, 1981Date of Patent: June 8, 1982Assignee: Standard Oil CompanyInventors: Louis J. Velenyi, Andrew S. Krupa
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Patent number: 4327238Abstract: The catalytic dehydrogenation of at least one dehydrogenatable organic compound which has at least one ##STR1## grouping is carried out in the presence of a zinc titanate catalyst. The selectivity of the zinc titanate catalyst is improved by at least one promoter selected from the group consisting of chromium oxide, antimony oxide, bismuth oxide, oxides of the lanthanides, oxides of the actinides, oxides thereof, and compounds convertible to the oxides thereof.Type: GrantFiled: February 28, 1980Date of Patent: April 27, 1982Assignee: Phillips Petroleum CompanyInventor: Alan D. Eastman
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Patent number: 4172854Abstract: Magnesium chromite dehydrogenation catalysts are improved by incorporation therein up to about 10% of an alkali metal.Type: GrantFiled: January 9, 1975Date of Patent: October 30, 1979Assignee: Petro-Tex Chemical CorporationInventors: Michael C. Ellis, Harold E. Manning
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Patent number: 4152300Abstract: Addition of small amounts of oxidic compounds of aluminum, cadmium, magnesium, manganese, nickel, uranium, and the rare earths to iron-potassium-vanadium oxide catalysts useful in the dehydrogenation of hydrocarbons to the corresponding more unsaturated hydrocarbons results in an improved catalyst.Type: GrantFiled: April 24, 1978Date of Patent: May 1, 1979Assignee: Shell Oil CompanyInventor: Gregor H. Riesser