Cr, Mo, Or W Patents (Class 585/662)
  • Patent number: 8846996
    Abstract: The present invention provides a process for the manufacture of an efficient and robust catalyst for the oxidative dehydrogenation of paraffins to olefins, preferably lower C2-4 paraffins. The present invention provides a process for the preparation of an oxidative dehydrogenation catalyst of C2-4 paraffins to olefins comprising comminuting: from 10 to 99 weight % of a mixed oxide catalyst of the formula VxMoyNbzTemMenOp, wherein Me is a metal selected from the group consisting of Ta, Ti, W, Hf, Zr, Sb and mixtures thereof; with from 90 to 1 weight % of an inert matrix selected from oxides of titanium, zirconia, aluminum, magnesium, yttria, lantana, silica and their mixed compositions or a carbon matrix to produce particles having a size from 1 to 100 microns and forming the resulting particles into pellets having a size from 0.1 to 2 mm.
    Type: Grant
    Filed: February 22, 2010
    Date of Patent: September 30, 2014
    Assignee: Nova Chemicals (International) S.A.
    Inventors: Leonid Modestovich Kustov, Aleksey Victorovich Kucherov, Elena Dmitrievna Finashina, Tatyana Nikolaevna Kucherova, Vera Ilynichna Isaeva, Andrzej Krzywicki, Haiyong Cai
  • Patent number: 8642825
    Abstract: The present invention provides a continuous process for the oxidative dehydrogenation of ethane to ethylene using a mixed oxide catalyst supported onto a ceramic membrane by supplying an oxygen containing gas (air or pure oxygen) and pure ethane to the opposite sides of the membrane, so that the paraffin and the oxygen do not directly mix in the reactor.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: February 4, 2014
    Assignee: Nova Chemicals (International) S.A.
    Inventors: Leonid Modestovich Kustov, Aleksey Victorovich Kucherov, Elena Dmitrievna Finashina, Vasily Simanzhenkov, Andrzej Krzywicki
  • Patent number: 8624074
    Abstract: A process for the dehydrogenation of paraffins is presented. The process utilizes a rapid recycling of dehydrogenation catalyst between the dehydrogenation reactor and the catalyst regeneration unit. The process comprises preheating a combined hydrogen and paraffin hydrocarbon feedstream and passing the combined stream to a dehydrogenation reactor. The hydrocarbon feedstream and the catalyst pass through the reactor at a rate to limit the average residence time of the catalyst in the reactor. The catalyst is cycled to a regeneration unit, and passed through the regeneration unit to limit the average residence time of the catalyst in the regeneration unit.
    Type: Grant
    Filed: March 22, 2010
    Date of Patent: January 7, 2014
    Assignee: UOP LLC
    Inventors: Gavin P. Towler, Cynthia K. Zimmerman
  • Patent number: 8552237
    Abstract: A dehydrogenation catalyst is described that comprises an iron oxide, an alkali metal or compound thereof, and rhenium or a compound thereof. A process for preparing a dehydrogenation catalyst comprising preparing a mixture of iron oxide, an alkali metal or compound thereof, and rhenium or a compound thereof is also described. Additionally, a dehydrogenation process using the catalyst and a process for preparing polymers are described.
    Type: Grant
    Filed: March 19, 2012
    Date of Patent: October 8, 2013
    Assignee: BASF Corporation
    Inventor: Ruth Mary Kowaleski
  • Patent number: 8519210
    Abstract: A process for the oxidative dehydrogenation of ethane is disclosed. The process may include: contacting an ethane feed and an oxygen-containing gas in the presence of an oxidative dehydrogenation catalyst in an oxidative dehydrogenation reaction zone under conditions to oxidatively dehydrogenate at least a portion of the ethane to produce a product stream comprising ethylene, carbon oxides, water, and unreacted oxygen and ethane, wherein an oxygen concentration in the product stream is at least 0.1 mol %; contacting the product stream with an oxygen elimination catalyst in an oxygen elimination reaction zone to combust at least a portion of the oxygen; recovering from the oxygen elimination reaction zone an effluent having a reduced oxygen content; separating water from the effluent; separating carbon oxides and any non-condensable gas(es) from the ethylene and the unreacted ethane; and separating the ethylene from the unreacted ethane.
    Type: Grant
    Filed: April 2, 2009
    Date of Patent: August 27, 2013
    Assignee: Lummus Technology Inc.
    Inventors: Stephen Craig Arnold, Anne Mae Gaffney, Ruozhi Song, Chuen Yuan Yeh
  • Publication number: 20130158322
    Abstract: Nanowires useful as heterogeneous catalysts are provided. The nanowire catalysts are prepared by polymer templated methods and are useful in a variety of catalytic reactions, for example, the oxidative coupling of methane to ethane and/or ethylene. Related methods for use and manufacture of the same are also disclosed.
    Type: Application
    Filed: November 29, 2012
    Publication date: June 20, 2013
    Applicant: SILURIA TECHNOLOGIES, INC.
    Inventor: Siluria Technologies, Inc.
  • Publication number: 20130072739
    Abstract: Provided are methods of making dehydrogenation catalyst supports containing bayerite and silica. Silica-stabilized alumina powder, prepared by spray drying of bayerite powder, precipitating silica in a bayerite slurry with an acid, or impregnation or co-extrusion of bayerite with sodium silicate solution was found to be a superior catalyst support precursor. Catalysts prepared with these silica containing support materials have higher hydrothermal stability than current CATOFIN® catalysts. Also provided is a dehydrogenation catalyst comprising Cr2O3, an alkali metal oxide, SiO2 and Al2O3, and methods of using said catalyst to make an olefin and/or dehydrogenate a dehydrogenatable hydrocarbon.
    Type: Application
    Filed: September 20, 2011
    Publication date: March 21, 2013
    Applicant: BASF Corporation
    Inventors: Wolfgang Ruettinger, Richard Jacubinas
  • Patent number: 8252956
    Abstract: A new P-N-P ligand in which each phosphorus atom is bonded to two ortho-fluorine substituted phenyl groups is useful in ethylene oligomerizations. In combination with i) a source of chromium and ii) an activator such as methalumoxane; the ligand of this invention may be used to prepare an oligomer product that contains a mixture of hexenes and octenes. The hexenes and octenes produced with this ligand contain very low levels of internal olefins when produced under preferred reaction conditions.
    Type: Grant
    Filed: June 24, 2011
    Date of Patent: August 28, 2012
    Assignee: Nova Chemicals (International) S.A.
    Inventors: Xiaoliang Gao, Charles Ashton Garret Carter, Liangyou Fan, Lee Douglas Henderson
  • Patent number: 8252955
    Abstract: A new P—N—P ligand is useful in ethylene oligomerizations. In combination with i) a source of chromium and ii) an activator such as methylalumoxane; the ligand of this invention may be used to prepare an oligomer product that contains a mixture of hexenes and octenes. The hexenes and octenes produced with this ligand contain very low levels of internal olefins when produced under preferred reaction conditions.
    Type: Grant
    Filed: September 1, 2009
    Date of Patent: August 28, 2012
    Assignee: NOVA Chemicals (International) S.A.
    Inventors: Xiaoliang Gao, Charles Ashton Garret Carter, Lee Douglas Henderson
  • Publication number: 20120136191
    Abstract: The invention is a method of dehydrogenating a hydrocarbon, especially an alkane, to form an unsaturated compound, especially an alkene, by contacting the alkane with a catalyst comprising a form of carbon which is catalytically active for the dehydrogenation reaction. The catalyst may be formed by passing a hydrocarbon over a metal compound at a temperature greater than 650° C.
    Type: Application
    Filed: June 4, 2010
    Publication date: May 31, 2012
    Applicants: CAMBRIDGE ENTERPRISE LTD., JOHNSON MATTHEY PLC
    Inventors: Edmund Hugh Stitt, Michael John Watson, Lynn Gladden, James McGregor
  • Publication number: 20120016171
    Abstract: The present invention provides a process for the manufacture of an efficient and robust catalyst for the oxidative dehydrogenation of paraffins to olefins, preferably lower C2-4 paraffins. The present invention provides a process for the preparation of an oxidative dehydrogenation catalyst of C2-4 paraffins to olefins comprising comminuting: from 10 to 99 weight % of a mixed oxide catalyst of the formula VxMoyNbzTemMenOp, wherein Me is a metal selected from the group consisting of Ta, Ti, W, Hf, Zr, Sb and mixtures thereof; with from 90 to 1 weight % of an inert matrix selected from oxides of titanium, zirconia, aluminum, magnesium, yttria, lantana, silica and their mixed compositions or a carbon matrix to produce particles having a size from 1 to 100 microns and forming the resulting particles into pellets having a size from 0.1 to 2 mm.
    Type: Application
    Filed: February 22, 2010
    Publication date: January 19, 2012
    Applicant: Nova Chemicals (International) S.A.
    Inventors: Leonid Modestovich Kustov, Aleksey Victorovich Kucherov, Elena Dmitrievna Finashina, Tatyana Nikolaevna Kucherova, Vera Ilynichna Isaeva, Andrzej Krzywicki, Haiyong Cai
  • Publication number: 20100312035
    Abstract: Disclosed are dehydrogenation catalyst composites and methods of making the dehydrogenation catalyst composites. The dehydrogenation catalyst composites contain alumina, lithium oxide, alkaline earth metal oxide, chromium oxide, and sodium oxide. Also disclosed are methods of dehydrogenating a dehydrogenatable hydrocarbon involving contacting the dehydrogenatable hydrocarbon with a dehydrogenation catalyst composite containing alumina, lithium oxide, alkaline earth metal oxide, chromium oxide, and sodium oxide to provide a dehydrogenated hydrocarbon, such as an olefin.
    Type: Application
    Filed: June 5, 2009
    Publication date: December 9, 2010
    Applicant: BASF CATALYSTS LLC
    Inventors: Wolfgang Ruettinger, Michael Joseph Breen, Richard Jacubinas, Saeed Alerasool
  • Publication number: 20100249482
    Abstract: This invention relates to a method of preparing multicomponent bismuth molybdate catalysts composed of four metal components and a method of preparing 1,3-butadiene using the catalyst, and particularly, to multicomponent bismuth molybdate catalysts composed of a divalent cationic metal, a trivalent cationic metal, bismuth and molybdenum, a preparation method thereof, and a method of preparing 1,3-butadiene from a C4 mixture including n-butene and n-butane using oxidative dehydrogenation. According to this invention, it is possible to prepare catalysts having high activity for the preparation process of 1,3-butadiene only using four metal components as shown through systematic investigation of types and ratios of metal components, unlike conventional multicomponent metal oxide catalysts having a complicated composition of metal components.
    Type: Application
    Filed: August 24, 2008
    Publication date: September 30, 2010
    Inventors: Young Min Chung, Tac Jin Kim, Seong Jun Lee, Yong Seung Kim, Seung Hoon Oh, In Kyu Song, Hee soo Kim, Ji Chul Jung, Ho Won Lee
  • Patent number: 7754935
    Abstract: Methods of dehydrogenating hydrocarbons to yield unsaturated compounds are described. Reactor configurations useful for dehydrogenation are also described. Hydrocarbons can be dehydrogenated, for relatively long periods of time-on-stream, in a reaction chamber having a dimension of 2 mm or less to produce H2 and an olefin. Techniques have been developed that reduce coke and allow stable, relatively long-term operation in small reactors.
    Type: Grant
    Filed: July 8, 2008
    Date of Patent: July 13, 2010
    Assignee: Velocys
    Inventors: John H. Brophy, Gary Roberts, G. Bradley Chadwell, Matthew B. Schmidt, Anna Lee Tonkovich
  • Patent number: 7678956
    Abstract: The invention relates to a method for producing propylene during which a first gas mixture, which is technically free of oxygen but contains propane, water vapor and hydrogen, and which has a temperature of at least 400° C., is led into a reaction device having at least one catalyst bed as well as usual dehydration conditions. Another gas mixture, which contains propane and oxygen and which can also contain ammonia, the propane content exceeding the oxygen content, is led into the same reaction device in which it reacts with the first gas mixture while forming propylene, water vapor and hydrogen, and the formed gas mixture containing propylene, water vapor and hydrogen is drawn out of the reaction device.
    Type: Grant
    Filed: November 10, 2005
    Date of Patent: March 16, 2010
    Assignee: Uhde GmbH
    Inventor: Max Heinritz-Adrian
  • Publication number: 20100010280
    Abstract: A stationary or fluid bed dehydrogenation catalyst containing an alumina carrier, with chromium and alkali metals consisting of only sodium and potassium, added as promoters. The resultant catalyst demonstrates greater selectivity and olefin yield than prior art dehydrogenation catalysts, especially after aging.
    Type: Application
    Filed: July 14, 2008
    Publication date: January 14, 2010
    Applicant: SUD-CHEMIE INC.
    Inventor: Vladimir Fridman
  • Patent number: 7601881
    Abstract: 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: Grant
    Filed: January 30, 2008
    Date of Patent: October 13, 2009
    Assignee: UOP LLC
    Inventors: Ralph D. Gillespie, Feng Xu
  • Patent number: 7518027
    Abstract: A process for the production of a mono-olefin from a feedstock comprising a paraffinic hydrocabon which process comprises a) partially combusting at a pressure of at least (15) barg a mixture of the hydrocarbon feed and a molecular oxygen-containing gas in contact with a catalyst capable of supporting combustion beyond the normal fuel rich limit of flammability where they are reacted to form a product comprising one or more mono-olefin(s), carbon monoxide and hydrogen and b) recovering the one or more olefin(s).
    Type: Grant
    Filed: February 6, 2003
    Date of Patent: April 14, 2009
    Assignee: Innovene Europe Limited
    Inventors: Andrew Lindsay Burns, David Charles Griffiths, William Terence Woodfin
  • Patent number: 7491860
    Abstract: A process for adiabatic, non-oxidative dehydrogenation of hydrocarbons including passing a hydrocarbon feed stream through a catalyst bed, wherein the catalyst bed includes a first layer of a catalyst and second layer of a catalyst, wherein the catalyst of the first layer has high activity but a higher capacity for producing coke than the catalyst of the second layer and the second catalyst also has high activity but a lower capacity for producing coke than the catalyst of the first layer.
    Type: Grant
    Filed: August 3, 2005
    Date of Patent: February 17, 2009
    Assignee: Süd-Chemie Inc.
    Inventors: Vladimir Fridman, Michael Urbancic, Andrzej Rokicki
  • Patent number: 7402719
    Abstract: The invention provides methods of oxidative dehydrogenation (ODH). Conducting ODH in microchannels has unexpectedly been found to yield superior performance when compared to the same reactions at the same conditions in larger reactors. ODH methods employing a Mo—V—Mg—O catalyst is also described. Microchannel apparatus for conducting ODH is also disclosed.
    Type: Grant
    Filed: May 19, 2003
    Date of Patent: July 22, 2008
    Assignee: Velocys
    Inventors: John H. Brophy, Kai Jarosch, Terry J. Mazanec, Matthew B. Schmidt, Laura J. Silva, Anna Lee Tonkovich, Fred Pesa, David J. Hesse
  • Patent number: 7319179
    Abstract: The invention relates to a method for the oxidative dehydrogenation of ethane. The inventive method is characterized in that it consists of bringing the ethane into contact with the catalyst containing Mo, Te, V, Nb and at least a fifth element A which is selected from Cu, Ta, Sn, Se, W, Ti, Fe, Co, Ni, Cr, Zr, Sb, Bi, an alkali metal, an alkaline-earth metal and a rare earth, in which at least Mo, Te, V and Nb are present in the form of at least one oxide, said catalyst presenting, in calcined form, an X-ray diffractogram with more than ten intense diffraction lines, typically, the most intense lines corresponding to diffraction angles 2? of 7.7°±0.4, 8.9°±0.4, 22.1°+0.4, 26.6°±0.4, 26.9°±0.4, 27.1°±0.4, 28.1°±0.4, 31.2°±0.4, 35.0°±0.4 and 45.06°±0.
    Type: Grant
    Filed: July 30, 2004
    Date of Patent: January 15, 2008
    Assignees: Consejo Superior de Investigaciones Cientificas, Universidad Politecnica de Valencia
    Inventors: José Manuel López Nieto, Pablo Botella Asunción, Maria Isabel Vazquez Navarro, Ana Dejoz García
  • Patent number: 7291761
    Abstract: A process for the continuous heterogeneously catalyzed partial dehydrogenation of a hydrocarbon in the gas phase and in the presence of molecular oxygen, in which part of the product gas is recirculated to the reaction zone, and a reactor for carrying out such a process.
    Type: Grant
    Filed: March 4, 2003
    Date of Patent: November 6, 2007
    Assignee: BASF Aktiengesellschaft
    Inventors: Otto Machhammer, Goetz-Peter Schindler, Klaus Harth, Peter Zehner
  • Patent number: 7279611
    Abstract: 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: Grant
    Filed: December 12, 2005
    Date of Patent: October 9, 2007
    Assignee: BASF Catalysts LLC
    Inventors: Saeed Alerasool, Harold E. Manning
  • Patent number: 7256319
    Abstract: The present invention provides a catalyst composition for the production of olefins by oxidative dehydrogenation of hydrocarbons, and of using such catalyst compositions. The catalysts of the present invention include compositions of the formula: XxYyWOz wherein X is at least one element selected from the group consisting of Li, Na, K, Rb, Cs, and Fr; Y is at least one element selected from the group consisting of B, Al, Ga, In, Ti, C, Si, Ge, Sn, and Pb; x is 0.5-2.5; y is 0.05-5; and z is the number of oxygen atoms required to satisfy the valancy of X, Y, and W in said composition. The methods and catalysts of the present invention are specifically useful for the combined production of propene and isobutene at relatively high conversion, selectivity, and productivity, and with minimal side products.
    Type: Grant
    Filed: March 7, 2003
    Date of Patent: August 14, 2007
    Assignee: Saudi Basic Industries Corporation
    Inventors: Saeed M. Al-Zahrani, Ahmad E. Abasaeed, Nimir O. Elbashir, Mazhar A. Abdulwahed
  • Patent number: 7223897
    Abstract: A process for the production of an olefin from a hydrocarbon by autothermal cracking, which process comprises: partially combusting the hydrocarbon and an oxygen-containing gas in the presence of a catalyst, wherein the stoichiometric ratio of hydrocarbon to oxygen is 5 to 16 times the stoichiometric ratio of hydrocarbon to oxygen required for complete combustion of the hydrocarbon to carbon dioxide and water, characterised in that the catalyst comprises palladium and at least one further metal being a Group IIIA, Group IVA, VA, a transition metal or a lanthanide.
    Type: Grant
    Filed: October 24, 2005
    Date of Patent: May 29, 2007
    Assignee: Ineos Europe Limited
    Inventors: John William Couves, David Charles Griffiths, Brian Edward Messenger, Ian Allan Beattie Reid
  • Patent number: 7164053
    Abstract: Process for the production of an olefin from a hydrocarbon, which process comprises contacting the hydrocarbon and a molecular oxygen-containing gas with a catalyst under auto-thermal conditions sufficient to produce the olefin. The catalyst comprises a component (a) and a component (b), wherein component (a) is at least one metal selected from Group IIIA, Group IVA, Group VA and the transition metals and component (b) is at least one transition metal. The catalyst does not comprise either palladium or platinum.
    Type: Grant
    Filed: February 22, 2001
    Date of Patent: January 16, 2007
    Assignee: Ineos Europe Limited
    Inventors: Gavin Thomas Binmore, David Charles Griffiths, Brian Edward Messenger, Ian Allan Beattie Reid
  • Patent number: 7094942
    Abstract: A process for the dehydrogenation of alkane hydrocarbons is disclosed. The process comprises contacting the alkane with a chromium-based dehydrogenation catalyst in the presence of carbon dioxide at a temperature of from about 400° C. to about 700° C., a pressure of from about 0.1 to about 10 atmospheres, wherein the alkane to carbon dioxide molar ratio is about 1:0.0001 to 1:0.045.
    Type: Grant
    Filed: March 7, 2003
    Date of Patent: August 22, 2006
    Assignee: Saudi Basic Industries Corporation
    Inventors: Mazhar Abdulwahed, Leal G. Canelon, Adel Alshafai
  • Patent number: 7091392
    Abstract: A process for the dehydrogenation of alkane hydrocarbons is disclosed. The process comprises contacting an alkane with a chromium-based dehydrogenation catalyst in the presence of molecular oxygen at a temperature of from about 400° C. to about 700° C., a pressure of from about 0.1 to about 10 atmospheres, wherein the alkane to oxygen molar ratio is between about 1:0.0001 to 1:0.04.
    Type: Grant
    Filed: March 7, 2003
    Date of Patent: August 15, 2006
    Assignee: Saudi Basic Industries Corporation
    Inventors: Mazhar Abdulwahed, Saeed M. Al-Zahrani
  • Patent number: 7071371
    Abstract: A gel composition substantially contained within the pores of a solid material is disclosed for use as a catalyst or as a catalyst support in dehydrogenation and dehydrocyclization processes.
    Type: Grant
    Filed: November 21, 2003
    Date of Patent: July 4, 2006
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Kostantinos Kourtakis, Leo E. Manzer
  • Patent number: 7045671
    Abstract: A process for catalytic dehydrogenation of a dehydrogenatable hydrocarbon process stream to the corresponding olefin or olefins, the process comprising contacting the dehydrogenatable hydrocarbon process stream under dehydrogenation conditions with a mesoporous zeotype catalyst having an intra-crystalline, non-crystallographic mesopore system and a mesopore volume of the zeotype crystals above 0.25 ml/g and comprising at least one element belonging to Groups 5–14 in the Periodic Table of the Elements (new notation). The invention also comprises a catalyst for use in the above process.
    Type: Grant
    Filed: November 21, 2003
    Date of Patent: May 16, 2006
    Assignee: Haldor Topsoe A/S
    Inventors: Iver Schmidt, Anne Krogh, Claus Hviid Christensen
  • Patent number: 7041866
    Abstract: A catalyst and process is disclosed to selectively upgrade a paraffinic feedstock to obtain an isoparaffin-rich product for blending into gasoline. The catalyst comprises a support of a sulfated oxide or hydroxide of a Group IVB (IUPAC 4) metal, a first component comprising at least one Group III A (IUPAC 13) component, and at least one platinum-group metal component which is preferably platinum.
    Type: Grant
    Filed: October 8, 2002
    Date of Patent: May 9, 2006
    Assignee: UOP LLC
    Inventor: Ralph D. Gillespie
  • Patent number: 6977322
    Abstract: 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 first component of at least one lanthanide element, yttrium or mixtures thereof, which is preferably ytterbium or holmium, and at least one platinum-group metal component which is preferably platinum.
    Type: Grant
    Filed: July 19, 2004
    Date of Patent: December 20, 2005
    Assignee: UOP LLC
    Inventor: Ralph D. Gillespie
  • Patent number: 6891075
    Abstract: Processes for oxidative dehydrogenation of alkane to one or more olefins, exemplified by ethane to ethylene, are disclosed using novel catalysts. The catalysts comprise a mixture of metal oxides having as an important component nickel oxide (NiO), which give high conversion and selectivity in the process. For example, the catalyst can be used to make ethylene by contacting it with a gas mixture containing ethane and oxygen. The gas mixture may optionally contain ethylene, an inert diluent such as nitrogen, or both ethylene and an inert diluent.
    Type: Grant
    Filed: March 22, 2001
    Date of Patent: May 10, 2005
    Assignee: Symyx Technologies, Inc.
    Inventor: Yumin Liu
  • Patent number: 6831204
    Abstract: A new family of oxidative dehydrogenation catalysts having MCrAlY supports can be used in the production of olefins. Olefins are produced by heating a feed stream comprising at least an alkane and an oxidant to a temperature between 25° C. and 800° C.; contacting the feed stream with a catalyst comprising an MCrAlY structure and, optionally, a Group VIII promoter metal coating, wherein M is a base metal, or combination of base metals; and maintaining a contact time of the alkane with the catalyst of less than 200 milliseconds under conditions sufficient to achieve oxidative dehydrogenation of the alkane. M may comprise a metal selected from the group consisting of Group IB-VIIB metals, Group IIIA-VA metals, lanthanide metals, iron, cobalt, nickel, and combinations thereof. More particularly, M may comprise a metal selected from the group consisting Tb, Sm, Pr, Fe, Ni, Co, and combinations thereof.
    Type: Grant
    Filed: October 11, 2002
    Date of Patent: December 14, 2004
    Assignee: ConocoPhillips Company
    Inventors: Zhen Chen, Sriram Ramani, Lisa M. Carmichael, Joe D. Allison
  • Publication number: 20040181107
    Abstract: A process for the dehydrogenation of alkane hydrocarbons is disclosed. The process comprises contacting the alkane with a chromium-based dehydrogenation catalyst in the presence of carbon dioxide at a temperature of from about 400° C. to about 700° C., a pressure of from about 0.1 to about 10 atmospheres, wherein the alkane to carbon dioxide molar ratio is about 1:0.0001 to 1:0.045.
    Type: Application
    Filed: March 7, 2003
    Publication date: September 16, 2004
    Applicant: Saudi Basic Industries Corporation
    Inventors: Mazhar Abdulwahed, Leal G. Canelon, Adel Alshafai
  • Publication number: 20040176657
    Abstract: A process for the dehydrogenation of alkane hydrocarbons is disclosed. The process comprises contacting an alkane with a chromium-based dehydrogenation catalyst in the presence of molecular oxygen at a temperature of from about 400° C. to about 700° C., a pressure of from about 0.1 to about 10 atmospheres, wherein the alkane to oxygen molar ratio is between about 1:0.0001 to 1:0.04.
    Type: Application
    Filed: March 7, 2003
    Publication date: September 9, 2004
    Applicant: Saudi Basic Industries Corporation
    Inventors: Mazhar Abdulwahed, Saeed M. Al-Zahrani
  • Patent number: 6781022
    Abstract: The objective of the present invention is a polyvalent bifunctional catalyst and the process of its realization. A catalyst characterized by the fact that it contains, over a TiO2 support, an oxide or a mixture of metallic oxides of MC2 type obtained by reduction of the corresponding MC3 oxides, the metal(s) forming the MO2 oxides are chosen from the group formed by W and Mo.
    Type: Grant
    Filed: May 8, 2001
    Date of Patent: August 24, 2004
    Assignee: Boubyan Petrochemical Company (K.S.C.)
    Inventors: Ali Katrib, Damien Mey, Gilbert Maire
  • Patent number: 6756517
    Abstract: Lower alkenes of from 2 to 5 carbon atoms, such as propene, are produced by the vapor phase catalytic oxidative dehydrogenation of lower alkane, such as propane, using a mixed metal oxide catalyst of formula (1) as decribed, containing manganese and at least one additional metal as essential elements, e.g., Mn1Sb0.15Ox, Mn1P0.2Ox, Mn1S0.15W0.05Cr0.1Ox. The lower alkene may be further oxidatively dehydrogenated using a mixed metal oxide catalyst of formula (1), especially formula (2), as described, to produce a mixture of unsaturated aldehyde and unsaturated acid. The unsaturated aldehyde may be further oxidatively dehydrogenated in the vapor phase in the presence of mixed metal oxide catalyst of formula (1), especially formula (3).
    Type: Grant
    Filed: July 2, 2001
    Date of Patent: June 29, 2004
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Nobuji Kishimoto, Etsushige Matsunami
  • Patent number: 6700028
    Abstract: Provided herein are processes for the dehydrogenation of hydrocarbons using new supported catalysts. A process according to the invention employs new catalysts that possess a unique pore size distribution which provides a favorable balance of selectivity, activity, and thermal stability. A process according to the invention includes regeneration of the new catalysts. Detergent range paraffins may be converted to monoolefins using the new catalysts with fewer unwanted by-products being formed during the dehydrogenation.
    Type: Grant
    Filed: May 7, 2002
    Date of Patent: March 2, 2004
    Assignee: Huntsman Petrochemical Corporation
    Inventor: David R. Dyroff
  • Publication number: 20040015031
    Abstract: A process for the production of olefins such as ethylene from a hydrocarbon such as ethane. The process involves passing a mixture of the hydrocarbon and an oxagen-containing gas through a catalyst zone which is capable of supporting combustion beyond the fuel rich limit of flammability to produce the olefin. The catalyst zone comprises at least a first catalyst bed and a second catalyst bed. The second catalyst bed is located downstream of the first catalyst bed, is of a different composition to the first catalyst bed and comprises at least one metal selected from the group consisting of Mo, W, and Groups IB, IIB, IIIB, IVB, VB, VIIB and VIII of the Periodic Table. Suitably, the first catalyst bed comprises platinum and the second catalyst bed comprises tin- or copper-promoted nickel, cobalt or iridium catalyst or a copper-only catalyst.
    Type: Application
    Filed: January 13, 2003
    Publication date: January 22, 2004
    Inventor: Brian Edward Messenger
  • Publication number: 20030232720
    Abstract: 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: Application
    Filed: June 12, 2002
    Publication date: December 18, 2003
    Inventors: Saeed Alerasool, Harold E. Manning
  • Patent number: 6635793
    Abstract: A process is provided for use in the conversion of alkanes into alkylene oxides, having particular utility in the conversion of propane to form propylene oxide, using a lanthanide-promoted, supported, silver catalyst prepared via precipitation. A preferred embodiment uses silver nitrate and lanthanum nitrate to form the catalyst on a BaCO3 support.
    Type: Grant
    Filed: January 15, 2003
    Date of Patent: October 21, 2003
    Assignee: SRI International
    Inventors: Guido Mul, Marianna F. Asaro, Albert S. Hirschon, Robert B. Wilson, Jr.
  • Publication number: 20030191351
    Abstract: A novel catalyst composite is disclosed. Also disclosed is a use for the novel composite. The catalyst composite comprises a Group VIII noble metal component, a Group IA or IIA metal component, and a component selected from the group consisting of tin, germanium, lead, indium, gallium, thallium, or mixtures thereof, all on an alumina support comprising essentially theta-alumina, having a surface area from about 50 to about 120 m2/g, an apparent bulk density of at 0.5 g/cm3 and a mole ratio of the Group VIII noble metal component to the component selected from the group consisting of tin, germanium, lead, indium, gallium, thallium or mixtures thereof in the range from about 1.5 to about 1.7.
    Type: Application
    Filed: April 8, 2002
    Publication date: October 9, 2003
    Inventors: Timur V. Voskoboynikov, Daniel H. Wei, J. W. Adriaan Sachtler, Bipin V. Vora
  • Publication number: 20030163012
    Abstract: Olefinically unsaturated hydrocarbons are prepared from corresponding paraffinic hydrocarbons, in particular propylene is prepared from propane, by dehydrogenation over a catalyst comprising an oxide of a transition metal of group IV B of the Periodic Table, eg. TiO2 or ZrO2, and possibly at least one element selected from among elements of transition group VIII, eg. palladium, platinum or rhodium, and/or an element of transition group VI, eg. chromium, molybdenum or tungsten, and/or rhenium and/or tin and possibly a compound of an alkali metal or alkaline earth metal, a compound of main group III or transition group III or zinc.
    Type: Application
    Filed: January 13, 2003
    Publication date: August 28, 2003
    Inventors: Daniel Heineke, Michael Baier, Dirk Demuth, Klaus Harth
  • Publication number: 20030149323
    Abstract: The present invention provides a catalyst composition for the production of olefins by oxidative dehydrogenation of hydrocarbons, and of using such catalyst compositions.
    Type: Application
    Filed: March 7, 2003
    Publication date: August 7, 2003
    Applicant: Saudi Basic Industries Corporation.
    Inventors: Saeed M. Al-Zahrani, Ahmed E. Abasaeed, Nimir O. Elbashir, Mazhar A. Abdulwahed
  • Patent number: 6600082
    Abstract: 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: Grant
    Filed: August 23, 2001
    Date of Patent: July 29, 2003
    Assignee: Institut Francais du Petrole
    Inventors: Fabienne Le Peltier, Blaise Didillon, Jean-Claude Jumas, Josette Olivier-Fourcade
  • Patent number: 6576804
    Abstract: Olefinically unsaturated hydrocarbons are prepared from corresponding paraffinic hydrocarbons, in particular propylene is prepared from propane, by dehydrogenation over a catalyst comprising an oxide of a transition metal of group IV B of the Periodic Table, eg. TiO2 or ZrO2, and possibly at least one element selected from among elements of transition group VIII, eg. palladium, platinum or rhodium, and/or an element of transition group VI, eg. chromium, molybdenum or tungsten, and/or rhenium and/or tin and possibly a compound of an alkali metal or alkaline earth metal, a compound of main group III or transition group III or zinc.
    Type: Grant
    Filed: June 16, 1999
    Date of Patent: June 10, 2003
    Assignee: BASF Aktiengesellshaft
    Inventors: Daniel Heineke, Michael Baier, Dirk Demuth, Klaus Harth
  • Patent number: 6555724
    Abstract: A catalyst and a process employing such catalyst for the dehydrogenation of paraffinic hydrocarbons are disclosed, wherein the catalyst comprises a platinum group metal component, a zinc component and a magnesium component on a support comprising ZSM or borosilicate.
    Type: Grant
    Filed: January 16, 2001
    Date of Patent: April 29, 2003
    Assignee: BP Corporation North America Inc.
    Inventors: Bruce D. Alexander, George A. Huff, Jr.
  • Patent number: 6531631
    Abstract: A process for producing olefins and carboxylic acids from lower alkanes using a mixed metal oxide catalytic system comprising a catalyst having the formula MoaVbAlcXdYeOz wherein: X is at least one element selected from the group consisting of W and Mn; Y is at least one element selected from the group consisting of Pd, Sb, Ca, P, Ga, Ge, Si, Mg, Nb, and K; a is 1; b is 0.01 to 0.9; c is >0 to 0.2; d is >0 to 0.5; e is >0 to 0.5; and z is an integer representing the number of oxygen atoms required to satisfy the valency of Mo, V, Al, X, and Y.
    Type: Grant
    Filed: April 28, 2000
    Date of Patent: March 11, 2003
    Assignee: Saudi Basic Industries Corporation
    Inventors: Khalid Karim, Mohammad H. Al-Hazmi, Asad Ahmad Khan, Syed Irshad Zaheer
  • Patent number: 6521808
    Abstract: The present invention includes a sol-gel supported catalyst for the dehydrogenation of lower alkanes, the catalyst comprising at least one active metal and at least one promoter metal attached to a sol-gel mixed oxide support. The sol-gel mixed oxide support arises from the polymerization of at least one precursor. The active metal and the promoter metal have been attached to the sol-gel mixed oxide support by the active metal and the promoter metal having been co-precipitated with the precursor of the sol-gel mixed oxide support. The invention also includes a method of making the above mentioned catalyst and a method of using the catalyst to dehydrogenate lower alkanes to produce lower alkenes.
    Type: Grant
    Filed: February 17, 2000
    Date of Patent: February 18, 2003
    Assignee: The Ohio State University
    Inventors: Umit S. Ozkan, Rick B. Watson