By Dehydrogenation Patents (Class 585/379)
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Patent number: 10518249Abstract: According to one or more embodiments presently disclosed, one or more reactant hydrocarbons may be dehydrogenated by a method that includes contacting the one or more reactant hydrocarbons with a catalyst system to dehydrogenate at least a portion of the reactant hydrocarbons. The catalyst system may include a zincosilicate support material that includes an MFI framework type structure incorporating at least silicon and zinc. The catalyst system may further include one or more alkali or alkaline earth metals, and one or more platinum group metals.Type: GrantFiled: September 24, 2018Date of Patent: December 31, 2019Assignee: Saudi Arabian Oil CompanyInventor: Mohammed Abdulmajeed Al-Daous
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Patent number: 10363547Abstract: According to one or more embodiments presently disclosed, a catalyst system may be made by a method that includes introducing one or more alkali or alkaline earth metals to a zincosilicate support material, and introducing one or more platinum group metals to the zincosilicate support material. The zincosilicate support material may include an MFI framework type structure incorporating at least silicon and zinc.Type: GrantFiled: September 24, 2018Date of Patent: July 30, 2019Assignee: Saudi Arabian Oil CompanyInventor: Mohammed Abdulmajeed Al-Daous
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Patent number: 9024078Abstract: A dehydrogenation process for the dehydrogenation of at least one dehydrogenatable hydrocarbon, the process comprising contacting a feed comprising the at least one dehydrogenatable hydrocarbon under dehydrogenation conditions with a catalyst composition comprising a support and at least one dehydrogenation component wherein said conditions include a temperature of from 400° C. to 750° C. and a pressure of at least 50 psig (345 kPag).Type: GrantFiled: December 17, 2010Date of Patent: May 5, 2015Assignee: ExxonMobil Chemical Patents Inc.Inventors: Jihad M. Dakka, Lorenzo C. Decaul, Sabato Miseo, James R. Lattner, Tan-Jen Chen, Terry E. Helton, Teng Xu
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Patent number: 9012707Abstract: The invention relates to a process for the autothermal gas-phase dehydrogenation of a hydrocarbon-comprising gas stream by means of an oxygen-comprising gas stream over a heterogeneous catalyst configured as a monolith to give a reaction gas mixture and regeneration of the catalyst in a reactor in the form of a cylinder or prism, wherein the reactor is operated alternately in the production mode of the autothermal gas-phase dehydrogenation and in the regeneration mode.Type: GrantFiled: August 1, 2012Date of Patent: April 21, 2015Assignee: BASF SEInventors: Gerhard Olbert, Ulrike Wegerle, Grigorios Kolios, Albena Kostova
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Patent number: 8889935Abstract: A process for preparing 1-butene and a 1,3-butadiene derivative, containing the steps of a) non-oxidatively catalytically dehydrogenating a feedstock gas stream containing n-butane, hydrogen, other low-boiling secondary constituents and high boilers, to form a product mixture containing unreacted n-butane, 1-butene, 2-butenes, 1,3-butadiene, hydrogen, other low-boiling secondary constituents and high boilers; b) removing hydrogen, other low boilers and high boilers, to give a product mixture containing n-butane, 1-butene, two 2-butenes and 1,3-butadiene; c) reacting some of the 1,3-butadiene obtained in the removing b), to form a derivative; d) removing the 1,3-butadiene derivative obtained in the reacting c); e) selectively hydrogenating the 1,3-butadiene not derivatized in the reacting c), to form 1-butene; and f) distillatively removing 1-butene from the hydrocarbon stream obtained in the hydrogenating e), to leave a residual stream.Type: GrantFiled: March 21, 2012Date of Patent: November 18, 2014Assignee: Evonik Degussa GmbHInventor: Dietrich Maschmeyer
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Patent number: 8802019Abstract: A reactor includes an essentially horizontal cylinder for carrying out an autothermal gas-phase dehydrogenation of a hydrocarbon-comprising gas stream using an oxygen-comprising gas stream to give a reaction gas mixture over a heterogeneous catalyst configured as monolith. The interior of the reactor is divided by a detachable, cylindrical or prismatic housing, which is arranged in the longitudinal direction of the reactor and is gastight in the circumferential direction, into an inner region having one or more catalytically active zones, each having a packing composed of monoliths stacked on top of one another, next to one another and behind one another and before each catalytically active zone in each case a mixing zone having solid internals are provided and into an outer region, which is supplied with an inert gas, arranged coaxially to the inner region. A heat exchanger is connected to the housing at one end of the reactor.Type: GrantFiled: December 20, 2011Date of Patent: August 12, 2014Assignee: BASF SEInventors: Gerhard Olbert, Ulrike Wegerle, Grigorios Kolios, Albena Kostova, Jasmina Kessel, Alexander Weck, Alireza Rezai
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Patent number: 8691069Abstract: The present disclosure is a system and method for producing a first product from a first region of an electrochemical cell having a cathode and a second product from a second region of the electrochemical cell having an anode. The method may include a step of contacting the first region with a catholyte including carbon dioxide and contacting the second region with an anolyte including a recycled reactant. The method may further include applying an electrical potential between the anode and the cathode sufficient to produce carbon monoxide recoverable from the first region and a halogen recoverable from the second region.Type: GrantFiled: December 21, 2012Date of Patent: April 8, 2014Assignee: Liquid Light, Inc.Inventors: Kyle Teamey, Jerry J. Kaczur, Robert Page Shirtum
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Patent number: 8691728Abstract: Provided is a composition comprising (a) at least one cyclopropene molecular encapsulating agent complex, and (b) at least one salt other than calcium chloride, wherein the ratio of dry weight of said salt to dry weight of said cyclopropene molecular encapsulating agent complex is from 0.03 to 500, and wherein said composition either (i) has 30% or less water by weight, based on the weight of said composition, and has at least one said salt that is non-deliquescent, or (ii) has more than 30% water by weight, based on the weight of said composition, and has a ratio of dry weight of said salt to weight of said water of 0.05 or higher. Also provided are methods of storing and using such compositions.Type: GrantFiled: October 18, 2007Date of Patent: April 8, 2014Assignee: Rohm and Haas CompanyInventors: Edward Charles Kostansek, Bridget Marie Stevens
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Patent number: 8636976Abstract: This invention relates to a crystalline molecular sieve having, in its as-synthesized form, an X-ray diffraction pattern including d-spacing maxima at 13.18±0.25 and 12.33±0.23 Angstroms, wherein the peak intensity of the d-spacing maximum at 13.18±0.25 Angstroms is at least as great as 90% of the peak intensity of the d-spacing maximum at 12.33±0.23 Angstroms. This invention also relates to a method of making thereof.Type: GrantFiled: June 28, 2012Date of Patent: January 28, 2014Assignee: ExxonMobil Chemical Patents Inc.Inventors: Wieslaw J. Roth, Thomas Yorke, Michael C. Kerby, Simon C. Weston
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Patent number: 8529752Abstract: This invention relates to a process for hydrocarbon conversion comprising contacting a hydrocarbon feedstock with a crystalline molecular sieve, in its ammonium exchanged form or in its calcined form, under conversion conditions to form a conversion product, said crystalline molecular sieve comprising unit cells with MWW topology and is characterized by diffraction streaking from the unit cell arrangement in the c direction as evidenced by the arced hk0 patterns of electron diffraction pattern.Type: GrantFiled: December 15, 2011Date of Patent: September 10, 2013Assignee: ExxonMobil Chemical Patents Inc.Inventors: Wieslaw J. Roth, Thomas Yorke, Douglas Lewis Dorset, Mohan Kalyanaraman, Michael Charles Kerby, Simon Christopher Weston
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Patent number: 8450543Abstract: Isobutene, isoprene, and butadiene are obtained from mixtures of C4 and/or C5 olefins by dehydrogenation. The C4 and/or C5 olefins can be obtained by dehydration of C4 and C5 alcohols, for example, renewable C4 and C5 alcohols prepared from biomass by thermochemical or fermentation processes. Isoprene or butadiene can be polymerized to form polymers such as polyisoprene, polybutadiene, synthetic rubbers such as butyl rubber, etc. in addition, butadiene can be converted to monomers such as methyl methacrylate, adipic acid, adiponitrile, 1,4-butadiene, etc. which can then be polymerized to form nylons, polyesters, polymethylmethacrylate etc.Type: GrantFiled: January 7, 2011Date of Patent: May 28, 2013Assignee: Gevo, Inc.Inventors: Matthew W. Peters, Joshua D. Taylor, David E. Henton, Leo E. Manzer, Patrick R. Gruber, Josefa M. Griffith, Yassin Al Obaidi
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Publication number: 20120302798Abstract: A dehydrogenation process for the dehydrogenation of at least one dehydrogenatable hydrocarbon, the process comprising contacting a feed comprising the at least one dehydrogenatable hydrocarbon under dehydrogenation conditions with a catalyst composition comprising a support and at least one dehydrogenation component wherein said conditions include a temperature of from 400° C. to 750° C. and a pressure of at least 50 psig (345 kPag).Type: ApplicationFiled: December 17, 2010Publication date: November 29, 2012Inventors: Jihad M. Dakka, Lorenzo C. Decaul, Sabato Miseo, James R. Lattner, Tan-Jen Chen, Terry E. Helton, Teng Xu
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Patent number: 7968759Abstract: In a process for converting methane to aromatic hydrocarbons, a feed containing methane is supplied to one or more reaction zone(s) containing catalytic material operating under reaction conditions effective to convert at least a portion of the methane to aromatic hydrocarbons; the reaction zone(s) being operated with an inverse temperature profile.Type: GrantFiled: August 5, 2010Date of Patent: June 28, 2011Assignee: ExxonMobil Chemical Patents Inc.Inventors: Larry L. Iaccino, Elizabeth L. Stavens, Neeraj Sangar, Jeremy J. Patt
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Patent number: 7795490Abstract: In a process for converting methane to aromatic hydrocarbons, a feed containing methane is supplied to one or more reaction zone(s) containing catalytic material operating under reaction conditions effective to convert at least a portion of the methane to aromatic hydrocarbons; the reaction zone(s) being operated with an inverse temperature profile.Type: GrantFiled: April 18, 2007Date of Patent: September 14, 2010Assignee: ExxonMobil Chemical Patents Inc.Inventors: Larry L. Iaccino, Elizabeth L. Stavens, Neeraj Sangar, Jeremy J. Patt
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Patent number: 7781636Abstract: A process for converting methane to higher hydrocarbon(s) including aromatic hydrocarbon(s) in a reaction zone comprises providing to a hydrocarbon feedstock containing methane and a catalytic particulate material to the reaction zone and contacting the catalytic particulate material and the hydrocarbon feedstock in a substantially countercurrent fashion in the reaction zone, while operating the reaction zone under reaction conditions sufficient to convert at least a portion of said methane to a first effluent having said higher hydrocarbon(s).Type: GrantFiled: April 2, 2007Date of Patent: August 24, 2010Assignee: ExxonMobil Chemical Patents Inc.Inventors: Larry L. Iaccino, Neeraj Sangar, Elizabeth L. Stavens, Matthew J. Vincent
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Patent number: 7772450Abstract: In a process for converting methane to syngas and aromatic hydrocarbons, a feed containing methane is contacted with a dehydrocyclization catalyst under conditions effective to convert said methane to aromatic hydrocarbons and produce a first effluent comprising aromatic hydrocarbons and H2, wherein said first effluent comprises at least 5 wt % more aromatic hydrocarbons than said feed. At least part of the H2 from said first effluent is then reacted with an oxygen-containing species, such as carbon dioxide, to produce a second effluent having an increased H2 and CO content compared with said first effluent.Type: GrantFiled: April 26, 2007Date of Patent: August 10, 2010Assignee: ExxonMobil Chemical Patents Inc.Inventors: Larry L. Iaccino, James R. Lattner
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Patent number: 7759535Abstract: In a process for converting methane to higher hydrocarbons including aromatic hydrocarbons, a feed containing methane is contacted with a dehydrocyclization catalyst under conditions effective to convert said methane to aromatic hydrocarbons and produce a first effluent stream comprising aromatic hydrocarbons and hydrogen, wherein said first effluent stream comprises at least 5 wt % more aromatic hydrocarbons than said feed. At least part of the hydrogen from said first effluent stream is then reacted with an oxygen-containing species, such as carbon dioxide, to produce a second effluent stream having a reduced hydrogen content compared with said first effluent stream.Type: GrantFiled: December 2, 2005Date of Patent: July 20, 2010Assignee: ExxonMobil Chemical Patents Inc.Inventors: Larry L. Iaccino, Xiaobing Feng, Matthew J. Vincent, Elizabeth L. Stavens
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Patent number: 7732653Abstract: High temperature treatment of graphite nanofibers to increase their catalytic activity. The heat treated graphite nanofiber catalysts are suitable for catalyzing chemical reactions such as oxidation, hydrogenation, oxidative-dehydrogenation, and dehydrogenation.Type: GrantFiled: July 25, 2008Date of Patent: June 8, 2010Assignee: Catalytic Materials, LLCInventors: Xuejun Xu, R. Terry K. Baker
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Publication number: 20090118551Abstract: Integrated separation and preparation process comprising a gas separation process wherein a first component is separated from a mixture of components by diffusion of the first component through a porous partition into a stream of sweeping component; and a preparation process wherein the sweeping component is used as feed. Separation unit and device for use in such a process and industrial set-up for use in such a process.Type: ApplicationFiled: December 27, 2005Publication date: May 7, 2009Inventors: Andre Buijs, Leslie Andrew Chewter, Gerrit Jan Harmsen, Evert Van Der Heide, Jean-Francois Menard, Dominicus Fredericus Mulder, Wouter Spiering
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Patent number: 7388119Abstract: The present invention relates to a process for the hydrogenation of substituted or unsubstituted, monocyclic or polycyclicaromatics to form the corresponding cycloaliphatics, in particular of benzene to cyclohexane, by bringing the aromatic into contact with a hydrogen-containing gas in the presence of a catalyst, where hydrogen in which residual gases are present is used.Type: GrantFiled: July 18, 2002Date of Patent: June 17, 2008Assignee: BASF AktiengesellschaftInventors: Arnd Böttcher, Ekkehard Schwab, Ralf Kästner, Jochem Henkelmann, Gerd Kaibel, Heinrich Laib
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Patent number: 7151199Abstract: Hydrocarbon or oxygenate conversion process in which a feedstock is contacted with a non zeolitic molecular sieve which has been treated to remove most, if not all, of the halogen contained in the catalyst. The halogen may be removed by one of several methods. One method includes heating the catalyst in a low moisture environment, followed by contacting the heated catalyst with air and/or steam. Another method includes steam-treating the catalyst at a temperature from 400° C. to 1000° C. The hydrocarbon or oxygenate conversion processes include the conversion of oxygenates to olefins, the conversion of oxygenates and ammonia to alkylamines, the conversion of oxygenates and aromatic compounds to alkylated aromatic compounds, cracking and dewaxing.Type: GrantFiled: June 10, 2002Date of Patent: December 19, 2006Assignee: ExxonMobil Chemical Patents Inc.Inventors: Luc Roger Marc Martens, Stephen N. Vaughn, Albert Edward Schweizer, John K. Pierce, Shun Chong Fung
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Patent number: 6582589Abstract: The present invention relates to a new catalyst support material comprising a mixed oxide consisting essentially of a divalent metal and a trivalent metal in a substantially homogeneous phase, the mixed oxide being a calcination product of a hydrotalcite-like phase calcinated at a temperature of about 700-1200° C., wherein the divalent metal/trivalent metal molar ratio is greater than or equal to 2. The invention also relates to a process of preparing the support. The invention further provides a catalyst for dehydrogenation which includes a transition metal selected from the first row of transition metals of the periodic table and/or a Group VIII metal impregnated on the new catalyst support material. The invention also provides a process for dehydrogenation of light alkanes using the catalyst.Type: GrantFiled: November 6, 2001Date of Patent: June 24, 2003Assignee: Oen Norske Stats Oljeselskap A.S.Inventors: Erling Rytter, Duncan Akporiaye, Unni Olsbye
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Publication number: 20020183571Abstract: A radial reactor for utilization for catalytic reactions of gaseous or liquid feed streams including an annular catalyst bed, wherein the material contained within the catalyst bed includes an active catalyst material, contained within an outer ring-shaped layer of the catalyst bed, and a generally inert material, contained within an inner ring-shaped layer of the catalyst bed, wherein the generally inert material includes a potassium-containing compound, such as potassium oxide, hydroxide, carbonate or bicarbonate.Type: ApplicationFiled: January 8, 2002Publication date: December 5, 2002Applicant: Sud-Chemie Inc.Inventors: David L. Williams, Andrzej Rokicki, Dennis J. Smith, Kyle Mankin
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Publication number: 20020151757Abstract: This invention relates to a process for reactivating a dehydrocyclodimerization catalyst. Dehydrocyclodimerization catalysts which contain an aluminum phosphate binder can be deactivated when they are exposed to hydrogen at temperatures above 500° C. The instant process restores substantially all of the catalyst's lost activity. The process involves treating the catalyst with a fluid comprising water and drying the catalyst. The process is employed particularly advantageously in combination with coke removal for reactivating catalysts that contain coke deposits and that have also been hydrogen deactivated. This invention also relates to a method of producing a dehydrocyclodimerization catalyst that is resistant to hydrogen deactivation.Type: ApplicationFiled: March 29, 2002Publication date: October 17, 2002Inventors: Kerry O. Boehner, Karl Z. Steigleder, Veronica Marie Godfrey, Paul R. Cottrell, Earl S. Lemberger
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Patent number: 6380450Abstract: Tetrahydroindene is dehydrogenated in a vapor phase in the presence of a metallic catalyst, e.g., a nickel-molybdenum catalyst, to produce indene, which is industrially useful in high yield while inhibiting the catalyst from suffering a decrease in activity. In particular, a higher yield can be attained by a method in which tetrahydroindene is dehydrogenated to first convert it into indane, which is further dehydrogenated to obtain indene.Type: GrantFiled: April 15, 2000Date of Patent: April 30, 2002Assignee: Nippon Petrochemicals Company, LimitedInventor: Yasuo Matsumura
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Patent number: 6313068Abstract: The present invention generally relates to the regulation of plant physiology, in particular to methods for inhibiting the ethylene response in plants or plant products, and has three embodiments. The first embodiment relates to methods of minimizing impurities capable of reversibly binding to plant ethylene receptor sites during the synthesis of cyclopropene and its derivatives such as methylcyclopropene, thereby avoiding the negative effects these impurities have on plants treated with cyclopropene and its derivatives. The second embodiment relates to complexes formed from molecular encapsulation agents such as cyclodextrin, and cyclopropene and its derivatives such as methylcyclopropene, in addition to cyclopentadiene and diazocyclopentadiene and their derivatives, thereby providing a convenient means for storing and transporting these compounds capable of inhibiting the ethylene response in plants, which are reactive gases and highly unstable because of oxidation and other potential reactions.Type: GrantFiled: August 20, 1999Date of Patent: November 6, 2001Assignee: AgroFresh, Inc.Inventors: James Daly, Bob Kourelis
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Patent number: 6162758Abstract: In the dehydrogenation of secondary alcohols in the presence of a catalyst comprising zinc oxide and calcium carbonate at elevated temperature in the gas phase, secondary cyclic alcohols are used and the dehydrogenation is carried out in the presence of hydrogen and a catalyst whose active components comprise from 30 to 60% by weight of zinc oxide and from 40 to 70% by weight of calcium carbonate in the calcite modification.Type: GrantFiled: September 3, 1998Date of Patent: December 19, 2000Assignee: BASF AktiengesellschaftInventors: Franz Josef Brocker, Michael Hesse, Robert Markl
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Patent number: 6017849Abstract: The present invention generally relates to the regulation of plant physiology, in particular to methods for inhibiting the ethylene response in plants or plant products, and has three embodiments. The first embodiment relates to methods of minimizing impurities capable of reversibly binding to plant ethylene receptor sites during the synthesis of cyclopropene and its derivatives such as methylcyclopropene, thereby avoiding the negative effects these impurities have on plants treated with cyclopropene and its derivatives. The second embodiment relates to complexes formed from molecular encapsulation agents such as cyclodextrin, and cyclopropene and its derivatives such as methylcyclopropene, in addition to cyclopentadiene and diazocyclopentadiene and their derivatives, thereby providing a convenient means for storing and transporting these compounds capable of inhibiting the ethylene response in plants, which are reactive gases and highly unstable because of oxidation and other potential reactions.Type: GrantFiled: August 20, 1998Date of Patent: January 25, 2000Assignee: Biotechnologies for Horticulture, Inc.Inventors: James Daly, Bob Kourelis
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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: 5856541Abstract: The invention relates to an improved process which, starting from 2-cyclopenten-1-ones substituted in the 3-position, gives a high yields of 1,3-dialkylcyclopentadienes which can be directly metallated and reacted to give the corresponding 1,3-dialkylcyclopentadienyl-transition metal complexes.Type: GrantFiled: January 22, 1996Date of Patent: January 5, 1999Assignee: Witco GmbHInventor: Richard Lisowsky
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Patent number: 5414181Abstract: Disclosed is a method which combines catalytic cracking and olefin production using a coked catalytic cracking catalyst to dehydrogenate an alkane feed stream and form an olefin rich product stream. Preferably, the coked catalytic cracking catalyst has a carbon content of about 0.2-10 wt. %. The catalyst preferably comprises a crystalline tetrahedral framework oxide component.Type: GrantFiled: November 19, 1993Date of Patent: May 9, 1995Assignee: Exxon Research and Engineering CompanyInventors: Roby Bearden, Jr., Michael C. Kerby, Stephen M. Davis
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Patent number: 5365001Abstract: A method for preparing a dialkylnaphthalene in one step by contacting an dialkylbenzene compound with a solid catalyst in a gas or liquid phase in the presence of hydrogen, using a catalyst having composition (I) or (II) below:(1)(M.sup.1).sub.a.(M.sup.2).sub.b.(SiO.sub.2.XAl.sub.2 O.sub.3).(Al.sub.2 O.sub.3).sub.c (I)(2) Mixture of II-(i) and II-(ii):(M.sup.3).sub.d.(Al.sub.2 O.sub.3) II-(i)(M.sup.4).sub.e.(SiO.sub.2.XAl.sub.2 O.sub.3) II-(ii)wherein M.sup.1 is a metal selected from the group consisting of metals belonging to group VIII of a periodic table and rhenium;M.sup.2 is a member selected from the group consisting of zinc, gallium, and oxides thereof;M.sup.3 is a metal belonging to group VIII of a periodic table;M.sup.4 is at least one alkali metal; anda, b, c, d, e, and X represent proportions, respectively.Type: GrantFiled: April 8, 1993Date of Patent: November 15, 1994Assignee: Teijin LimitedInventors: Koji Sumitani, Keizo Shimada, Seiji Itoh, Kimihiko Sato, Risuke Suzuki, Akio Namatame
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Patent number: 5284986Abstract: This invention is a process of converting n-pentane to cyclopentene. In accordance with a preferred embodiment n-pentane feed is converted in a dual temperature stage-dual catalyst process without interstage processing of the first-stage product mixture.Type: GrantFiled: October 26, 1992Date of Patent: February 8, 1994Assignee: Mobil Oil CorporationInventor: Ralph M. Dessau
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Patent number: 5283385Abstract: This invention is a process of converting n-pentane to cyclopentane. In accordance with a preferred embodiment of the invention, n-pentane feed is converted in dual temperature stage process without interstage processing of the first stage product mixture.Type: GrantFiled: May 4, 1992Date of Patent: February 1, 1994Assignee: Mobil Oil CorporationInventor: Ralph M. Dessau
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Patent number: 5097086Abstract: A liquid catalyst composition for the oxidative coupling of methane and other hydrocarbon compounds to produce higher hydrocarbons and for the oxidative dehydrogenation of aliphatic and alicyclic hydrocarbon compounds, aliphatic and alicyclic substituted aromatic hydrocarbons, and mixtures thereof is disclosed.Type: GrantFiled: May 31, 1991Date of Patent: March 17, 1992Assignee: Institute of Gas TechnologyInventors: Anthony L. Lee, Robert F. Zabransky, Erek J. Erekson, S. Peter Barone, Irvine J. Solomon
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Patent number: 4922050Abstract: A catalytic dehydrogenation to produce the unsaturated analogs of aliphatic compounds with high process selectivity for the unsaturated analog production. The catalytic dehydrogenation comprises contacting the aliphatic compound, under dehydrogenation conditions, with a catalyst composition comprising a dehydrogenation metal and indium containing non-acidic crystalline microporous material.Type: GrantFiled: May 18, 1989Date of Patent: May 1, 1990Assignee: Mobil Oil CorporationInventors: Ralph M. Dessau, Randall D. Partridge, Ernest W. Valyocsik
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Patent number: 4863623Abstract: An additive composition comprising a graft and amine-derivatized copolymer prepared from ethylene and at least one C.sub.3 -C.sub.10 alpha-monoolefin and, optionally, a polyene selected from non-conjugated dienes and trienes comprising from about 15 to 80 mole percent of ethylene, from about 20 to 85 mole percent of said C.sub.3 -C.sub.Type: GrantFiled: March 24, 1988Date of Patent: September 5, 1989Assignee: Texaco Inc.Inventor: Theodore E. Nalesnik
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Patent number: 4849567Abstract: A catalytic dehydrogenation to produce the unsaturated analogs of aliphatic compounds with high process selectivity for the unsaturated analog production. The catalytic dehydrogenation comprises contacting the aliphatic compound, under dehydrogenation conditions, with a catalyst composition comprising a dehydrogenation metal and indium containing non-acidic crystalline microporous material.Type: GrantFiled: December 28, 1987Date of Patent: July 18, 1989Assignee: Mobil Oil CorporationInventors: Ralph M. Dessau, Randall D. Partridge, Ernest W. Valyocsik
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Patent number: 4676885Abstract: The invention disclosed herein comprises a process for the selective upgrading of combustion quality of a distillate transportation fuel by careful selective dehydrogenation, disproportionation and hydrogenation to convert cycloparaffinic materials contained in the distillate transportation fuel to acyclic paraffinic hydrocarbons, wherein said conversion is undertaken by first forming cyclomonoolefinic hydrocarbons from cycloparaffinic hydrocarbons via dehydrogenation, disproportionating the cyclomonoolefinic hydrocarbons to acyclic di-.alpha.-olefin hydrocarbons and then selectively hydrogenating said di-.alpha.-olefin hydrocarbons in the presence of hydrogen to saturate the double bonds of the di-.alpha.-olefin to form acyclic paraffinic hydrocarbons. The selective disproportionation reaction includes the addition of ethylene or an ethylene acting material to ring open the cyclomonoolefinic material.Type: GrantFiled: May 28, 1986Date of Patent: June 30, 1987Assignee: Shell Oil CompanyInventor: Warren V. Bush
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Patent number: 4644089Abstract: A process is provided for converting alkanes and cycloalkanes having up to 20 carbon atoms per molecule to a product comprising hydrogen gas and dehydrogenated and/or dehydrocyclized hydrocarbons, in the presence of a catalyst composition comprising vanadium oxide and aluminum phosphate. The preferred product components are aromatics such as ethylbenzene and xylenes. In one embodiment, a substantially deactivated catalyst composition is regenerated by contacting it with a free oxygen containing gas under suitable regeneration conditions.Type: GrantFiled: July 10, 1986Date of Patent: February 17, 1987Assignee: Phillips Petroleum CompanyInventor: Fu Ming Lee
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Patent number: 4607129Abstract: A process is provided for converting alkanes and cycloalkanes having up to 20 carbon atoms per molecule to a product comprising hydrogen gas and dehydrogenated and/or dehydrocyclized hydrocarbons, in the presence of a catalyst composition comprising divanadium pentoxide and silica. In one embodiment, a substantially deactivated catalyst composition is regenerated by contacting it with a free oxygen containing gas under suitable regeneration conditions. In another embodiment, a catalyst composition comprising divanadium pentoxide and silica is provided.Type: GrantFiled: June 10, 1985Date of Patent: August 19, 1986Assignee: Phillips Petroleum CompanyInventor: Fu M. Lee
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Patent number: 4568783Abstract: Disclosed is the vapor phase catalytic dehydrogenation of indanes to indenes over a Co--Mo oxide on alumina catalyst and in the presence of sulfur.Type: GrantFiled: June 24, 1985Date of Patent: February 4, 1986Assignee: The Standard Oil CompanyInventors: S. Erik Pedersen, Diane G. Farrington
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Patent number: 4476339Abstract: Steam dehydrocyclization of paraffinic hydrocarbons to aromatic hydrocarbons is effected in the presence of supported catalyst, typically bearing rhodium and preferably chromium and potassium, and characterized by a pH less than about 8.Type: GrantFiled: February 5, 1981Date of Patent: October 9, 1984Assignee: Texaco Inc.Inventors: Russell R. Reinhard, Tansukhial G. Dorawala, Edwin R. Kerr
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Patent number: 4447665Abstract: A method is disclosed for dehydrogenating a parafinic or naphthenic compound and for dehydrocyclizing a paraffinic compound comprising a straight chain of at least 5 carbon atoms, comprising: contacting an aforesaid compound under dehydrogenation conditions comprising a temperature in the range of from about 465.degree. C. to about 650.degree. C. with an active carbon catalyst having a cage-like structure and a BET surface area of at least 800 square meters per gram and a bulk density of at least 0.1 gram per cubic centimeter and comprising a substantially uniform dispersion of a metal, metal-containing material, or both in a porous carbon matrix, wherein the dispersed metal and metal in the dispersed metal-containing material are each a transition metal and wherein the total concentration of dispersed metal and dispersed metal-containing material is from about 0.001 to about 30 weight percent, calculated as the elemental metal and based on the weight of the catalyst.Type: GrantFiled: March 30, 1983Date of Patent: May 8, 1984Assignee: Standard Oil Company (Indiana)Inventor: Arnold N. Wennerberg
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Patent number: 4438288Abstract: This invention relates to a new process for dehydrogenating hydrocarbons utilizing a catalyst comprising a platinum group component, an alkali or alkaline earth component and a porous support material. After the catalyst is used to dehydrogenate hydrocarbons it is contacted in a catalyst regeneration zone with a halogen component to produce a regenerated catalyst containing added halogen component, which regenerated catalyst can then be reused to dehydrogenate hydrocarbons. The added halogen component increases the catalyst's activity and stability in the dehydrogenation process.Type: GrantFiled: May 19, 1983Date of Patent: March 20, 1984Assignee: UOP Inc.Inventors: Tamotsu Imai, Chi-Wen Hung
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Patent number: 4430517Abstract: This invention relates to a new catalyst for converting hydrocarbons. The catalyst comprises a platinum group component, a Group IVA component, especially tin, an alkali or alkaline earth component, more than 0.2 weight %, calculated on an elemental basis, of a halogen component and a porous carrier material, wherein the atomic ratio of the alkali or alkaline earth component to the platinum group component is more than 10. The catalyst is particularly useful for dehydrogenating paraffins having from 2 to 5 or more carbon atoms to the corresponding mono-olefins, or for dehydrogenating mono-olefins having from 3 to 5 or more carbon atoms to the corresponding di-olefins.Type: GrantFiled: March 22, 1983Date of Patent: February 7, 1984Assignee: UOP Inc.Inventors: Tamotsu Imai, Chi-Wen Hung
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Patent number: 4374046Abstract: Dehydrogenatable hydrocarbons are dehydrogenated by contacting them, at dehydrogenation conditions, with a catalytic composite comprising a combination of catalytically effective amounts of a platinum group component, a nickel component, and a zinc component with a porous carrier material. A specific example of the nonacidic catalytic composite disclosed herein is a combination of a platinum group component, a nickel component, a zinc component, and an alkali or alkaline earth component with a porous carrier material in amounts sufficient to result in a composite containing about 0.01 to about 2 wt. % platinum group metal, about 0.05 to about 5 wt. % nickel, about 0.01 to about 5 wt. % zinc, and about 0.1 to about 5 wt. % alkali metal or alkaline earth metal.Type: GrantFiled: November 17, 1980Date of Patent: February 15, 1983Assignee: UOP Inc.Inventor: George J. Antos
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Patent number: 4371730Abstract: 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 silicate catalyst and in the substantial absence of free oxygen.Type: GrantFiled: June 5, 1981Date of Patent: February 1, 1983Assignee: Phillips Petroleum CompanyInventor: Alan D. Eastman
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Patent number: 4366091Abstract: Dehydrogenatable hydrocarbons are dehydrogenated by contacting them, at hydrocarbon dehydrogenation conditions, with a novel attenuated superactive multimetallic catalytic composite comprising a combination of a catalytically effective amount of a pyrolyzed rhenium carbonyl component with a porous carrier material containing a uniform dispersion of catalytically effective amounts of a platinum group component maintained in the elemental metallic state, and of a tin component. An example of the attenuated superactive nonacidic multimetallic catalytic composite disclosed herein is a combination of a catalytically effective amount of a pyrolyzed rhenium carbonyl component with a porous carrier material containing a uniform dispersion of catalytically effective amounts of an alkali or alkaline earth component, a tin component, and of a platinum group component which is maintained in the elemental metallic state during the incorporation of the rhenium carbonyl component.Type: GrantFiled: December 12, 1980Date of Patent: December 28, 1982Assignee: UOP Inc.Inventor: George J. Antos
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Patent number: 4353815Abstract: Dehydrogenatable hydrocarbons are dehydrogenated by contacting them, at hydrocarbon dehydrogenation conditions, with a novel attenuated superactive multimetallic catalytic composite comprising a combination of a catalytically effective amount of a pyrolyzed rhenium carbonyl component with a porous carrier material containing a uniform dispersion of catalytically effective amounts of a platinum group component maintained in the elemental metallic state, and of a manganese component. An example of the attenuated superactive nonacidic multimetallic catalytic composite disclosed herein is a combination of a catalytically effective amount of a pyrolyzed rhenium carbonyl component with a porous carrier material containing a uniform dispersion of catalytically effective amounts of an alkali or alkaline earth component, a manganese component, and of a platinum group component which is maintained in the elemental metallic state during the incorporation of a rhenium carbonyl component.Type: GrantFiled: November 3, 1980Date of Patent: October 12, 1982Assignee: UOP Inc.Inventor: George J. Antos