Group Vi Metal Patents (Class 585/420)
  • Patent number: 10487026
    Abstract: Disclosed are a catalytic method and system for producing aromatic hydrocarbons from aliphatic hydrocarbons or light naphtha. In an aspect, the process comprises adding a diluent comprising a heavy aromatic hydrocarbon (for example, C7-C9+) to a reactor feedstock comprising aliphatic hydrocarbons (for example, C6-C8) or light naphtha to form a reactor feed stream, such that the heat capacity of reactor feed stream is higher than the heat capacity of feedstock. The reactor feed stream is heated and contacting with a catalyst under conditions sufficient to aromatize at least a portion of the aliphatic hydrocarbons and form a product stream comprising a primary aromatic hydrocarbon product and a heavy aromatic hydrocarbon product. In an aspect, the diluent can comprise a heavy aromatic hydrocarbon having at least one carbon atom more than the primary aromatic hydrocarbon product.
    Type: Grant
    Filed: April 13, 2018
    Date of Patent: November 26, 2019
    Assignee: Chevron Phillips Chemical Company LP
    Inventor: Eric P. Weber
  • Patent number: 10392320
    Abstract: Described herein are methods useful for preparing alkylaromatics.
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: August 27, 2019
    Assignee: Rutgers, The State University of New Jersey
    Inventors: Alan S. Goldman, Andrew M. Steffens, William Schinski
  • Patent number: 8785704
    Abstract: The present invention relates to a process for nonoxidatively dehydroaromatizing a reactant stream comprising C1-C4-aliphatics by converting the reactant stream in the presence of a catalyst in a reaction zone 1 to a product stream P comprising aromatic hydrocarbons, and regenerating the catalyst whose activity has been reduced by deposited coke with a hydrogen-comprising mixture H in a reaction zone 2, wherein at least a portion of the deposited coke is converted to methane and at least a portion of the methane formed is fed to reaction zone 1.
    Type: Grant
    Filed: May 20, 2009
    Date of Patent: July 22, 2014
    Assignee: BASF SE
    Inventors: Frank Kiesslich, Achim Gritsch, Christian Schneider, Albena Kostova
  • Publication number: 20140073828
    Abstract: A catalyst for converting methane to aromatic hydrocarbons is described herein. The catalyst comprises an active metal or a compound thereof, zinc or a compound thereof and an inorganic oxide support wherein the active metal is added to the support as a metal oxalate. A method of making the catalyst and a method of using the catalyst are also described.
    Type: Application
    Filed: January 24, 2012
    Publication date: March 13, 2014
    Inventors: Armin Lange De Oliveira, Larry Lanier Marshall, Peter Tanev Tanev
  • Patent number: 8563794
    Abstract: A method of extending the life of an aromatization catalyst comprising identifying a rapid deactivation threshold (RDT) of the catalyst, and oxidizing the catalyst prior to reaching the RDT. A method of aromatizing a hydrocarbon comprising identifying a rapid deactivation threshold (RDT) for an aromatization catalyst, and operating an aromatization reactor comprising the catalyst to extend the Time on Stream of the reactor prior to reaching the RDT. A method of extending the life of an aromatization catalyst comprising predicting a rapid deactivation threshold (RDT) for an aromatization reactor by employing the catalyst in a reactor system under an accelerated fouling condition to identify a test rapid deactivation threshold (t-RDT), predicting the RDT for the aromatization reactor based upon the t-RDT, and oxidizing the catalyst prior to the predicted RDT to extend the Time on Stream of the aromatization catalyst.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: October 22, 2013
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Scott H. Brown, Tin-Tack Peter Cheung, Daniel P. Hagewiesche, Baiyi Zhao
  • Patent number: 8558045
    Abstract: A catalyst for aromatizing a lower hydrocarbon, in order to increase the amount of production of useful aromatic compounds, such as benzene and toluene, by improving the methane conversion rate, the benzene formation rate, the naphthalene formation rate and the BTX formation rate (or a total formation rate of benzene, toluene and xylene) is such that molybdenum and silver are loaded on a metallosilicate as a substrate. It is more preferable to obtain the aromatizing catalyst by loading molybdenum and silver after modifying a zeolite formed of the metallosilicate with a silane compound that has a molecular diameter larger than a pore diameter of the zeolite and that has an amino group, which selectively reacts at a Bronsted acid point of the zeolite, and a straight-chain hydrocarbon group.
    Type: Grant
    Filed: March 28, 2008
    Date of Patent: October 15, 2013
    Assignee: Meidensha Corporation
    Inventors: Shinichi Yamada, Tomohiro Yamada, Yuji Ogawa, Takuya Hatagishi, Yo Yamamoto, Yoshio Sugiyama
  • Patent number: 8552236
    Abstract: A catalyst for the conversion of methane to higher hydrocarbons including aromatic hydrocarbons comprises particles of a porous refractory material, crystals of a zeolite material grown within the pores of the refractory material, and at least one catalytically active metal or metal compound associated with the zeolite crystals.
    Type: Grant
    Filed: September 22, 2010
    Date of Patent: October 8, 2013
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventor: Larry L. Iaccino
  • Publication number: 20130066126
    Abstract: The present invention relates to a method for producing a zeolite catalyst useful for aromatization of a lower alkane, a zeolite catalyst useful for aromatization of a lower alkane obtainable by said method and a process for aromatization of a lower alkane using the zeolite catalyst of the present invention.
    Type: Application
    Filed: May 17, 2011
    Publication date: March 14, 2013
    Applicant: SAUDI BASIC INDUSTRIES CORPORATION
    Inventor: Suman Kumar Jana
  • Patent number: 8288603
    Abstract: A method of extending the life of an aromatization catalyst comprising identifying a rapid deactivation threshold (RDT) of the catalyst, and oxidizing the catalyst prior to reaching the RDT. A method of aromatizing a hydrocarbon comprising identifying a rapid deactivation threshold (RDT) for an aromatization catalyst, and operating an aromatization reactor comprising the catalyst to extend the Time on Stream of the reactor prior to reaching the RDT. A method of characterizing an aromatization catalyst comprising identifying a rapid deactivation threshold (RDT) of the catalyst.
    Type: Grant
    Filed: December 7, 2010
    Date of Patent: October 16, 2012
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Scott H. Brown, Tin-Tack Peter Cheung, Daniel P. Hagewiesche, Baiyi Zhao
  • Patent number: 8278237
    Abstract: A catalyst for producing aromatic compounds from lower hydrocarbons while improving activity life stability of methane conversion rate; benzene formation rate; naphthalene formation rate; and total formation rate of benzene, toluene and xylene is formed by loading molybdenum and copper on metallo-silicate serving as a substrate and then calcining the metallo-silicate. When the catalyst is reacted with a reaction gas containing lower hydrocarbons and carbonic acid gas, aromatic compounds are produced. In order to obtain the catalyst, it is preferable that molybdenum and copper are loaded on zeolite formed of metallo-silicate after the zeolite is treated with a silane compound larger than a pore of the zeolite in diameter and having an amino group and a straight-chain hydrocarbon group, the amino group being able to selectively react with the zeolite at a Bronsted acid point of the zeolite. It is preferable that a loaded amount of molybdenum is within a range of from 2 to 12 wt.
    Type: Grant
    Filed: February 13, 2008
    Date of Patent: October 2, 2012
    Assignee: Meidensha Corporation
    Inventors: Shinichi Yamada, Tomohiro Yamada, Yuji Ogawa, Hirokazu Akiyama, Takuya Hatagishi
  • Patent number: 8148590
    Abstract: A process for producing aromatic hydrocarbons and hydrogen, in which a lower hydrocarbons-containing feedstock gas is reformed by being supplied to and being brought into contact with a catalyst under high temperature conditions thereby forming aromatic hydrocarbons and hydrogen. The method includes the steps of (a) supplying a hydrogen gas together with the feedstock gas during a supply of the feedstock gas; and (b) suspending the supply of the feedstock gas for a certain period of time while keeping a condition of a supply of the hydrogen gas. The catalyst is exemplified by a metallo-silicate carrying molybdenum and a metallo-silicate carrying molybdenum and rhodium. An amount of the hydrogen gas supplied together with the feedstock gas is set to be preferably larger than 2% and smaller than 10%, more preferably within a range of from 4 to 8%, much more preferably 8%.
    Type: Grant
    Filed: July 28, 2005
    Date of Patent: April 3, 2012
    Assignees: Meidensha Corporation
    Inventors: Masaru Ichikawa, Ryoichi Kojima, Yuji Ogawa, Masamichi Kuramoto
  • Patent number: 8084658
    Abstract: Process for the integrated preparation of aromatics and ammonia by reaction of a gas stream A comprising at least one C1-C6-aliphatic and nitrogen in the presence of at least one catalyst, wherein the C1-C6-aliphatics are converted nonoxidatively into aromatics in one reaction and the hydrogen liberated in this reaction is reacted with nitrogen to form ammonia in a further reaction.
    Type: Grant
    Filed: November 22, 2007
    Date of Patent: December 27, 2011
    Assignee: BASF SE
    Inventors: Ulrich Mueller, Harald Freiberger
  • Patent number: 7977519
    Abstract: In a process for converting methane to higher hydrocarbons including aromatic hydrocarbons, a feed containing methane is contacted with a dehydrocyclization catalyst in a reaction zone under conditions effective to convert said methane to aromatic hydrocarbons. A first portion of the catalyst is transferred from the reaction zone to a heating zone, where the first catalyst portion is heated by contacting the catalyst with hot combustion gases generated by burning a supplemental source of fuel. The heated first catalyst portion is then returned to the reaction zone.
    Type: Grant
    Filed: February 8, 2010
    Date of Patent: July 12, 2011
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Larry L. Iaccino, Neeraj Sangar, Elizabeth L. Stavens
  • Patent number: 7951985
    Abstract: In a process for converting methane to aromatic hydrocarbons, a feed containing methane is contacted with a dehydrocyclization catalyst in a reaction zone under conditions effective to convert the methane to aromatic hydrocarbons. The reaction zone is contained within a reactor and the reactor or an internal component of the reactor has at least one surface that is chemically exposed to the feed and is formed from a refractory material that exhibits a carbon uptake (mass of carbon absorbed per unit of exposed metal surface area) of less than 25 g/m2 when exposed to mixture of 50 vol % methane and 50 vol % H2 at 900° C. for 168 hours.
    Type: Grant
    Filed: January 6, 2011
    Date of Patent: May 31, 2011
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Neeraj Sangar, Larry L. Iaccino, Jeffrey P. Jones
  • Patent number: 7893308
    Abstract: In a process for converting methane to aromatic hydrocarbons, a feed containing methane is contacted with a dehydrocyclization catalyst in a reaction zone under conditions effective to convert the methane to aromatic hydrocarbons. The reaction zone is contained within a reactor and the reactor or an internal component of the reactor has at least one surface that is chemically exposed to the feed and is formed from a refractory material that exhibits a carbon uptake (mass of carbon absorbed per unit of exposed metal surface area) of less than 25 g/m2 when exposed to mixture of 50 vol % methane and 50 vol % H2 at 900° C. for 168 hours.
    Type: Grant
    Filed: August 13, 2007
    Date of Patent: February 22, 2011
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Neeraj Sangar, Larry L. Iaccino, Jeffrey P. Jones
  • Patent number: 7888543
    Abstract: A process for converting methane to higher hydrocarbon(s) including aromatic hydrocarbon(s) comprises providing a hydrocarbon feedstock containing methane and a catalytic particulate material to a reactor system having at least first and second reaction zones connected in series. Each of the reaction zones is operated under reaction conditions sufficient to convert at least a portion of the methane to said higher hydrocarbon(s) and is maintained in a moving bed fashion, with the bulk of the catalytic particulate material being moved from the first reaction zone to the second reaction zone and with the bulk of the hydrocarbon feedstock being moved from the second reaction zone to the first reaction zone.
    Type: Grant
    Filed: December 18, 2009
    Date of Patent: February 15, 2011
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Larry L. Iaccino, Elizabeth L. Stavens, Neeraj Sangar
  • Patent number: 7868217
    Abstract: A method of extending the life of an aromatization catalyst comprising identifying a rapid deactivation threshold (RDT) of the catalyst, and oxidizing the catalyst prior to reaching the RDT. A method of aromatizing a hydrocarbon comprising identifying a rapid deactivation threshold (RDT) for an aromatization catalyst, and operating an aromatization reactor comprising the catalyst to extend the Time on Stream of the reactor prior to reaching the RDT. A method of characterizing an aromatization catalyst comprising identifying a rapid deactivation threshold (RDT) of the catalyst.
    Type: Grant
    Filed: November 14, 2007
    Date of Patent: January 11, 2011
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Scott H. Brown, Tin-Tack Peter Cheung, Daniel P. Hagewiesche, Baiyi Zhao
  • Publication number: 20100331592
    Abstract: A catalyst for the conversion of methane to higher hydrocarbons including aromatic hydrocarbons comprises a support and molybdenum or a compound thereof dispersed on the support. The support comprises an aluminosilicate zeolite combined with a binder selected from silica, titania, zirconia and mixtures thereof. The catalyst is substantially free of aluminum external to the framework of the aluminosilicate zeolite.
    Type: Application
    Filed: December 22, 2008
    Publication date: December 30, 2010
    Inventors: Neeraj Sangar, Jocelyn A. Kowalski, Larry L. Iaccino, Kenneth R. Clem
  • Publication number: 20100185034
    Abstract: Provided is a process for producing an aromatic hydrocarbon using a molybdenum-containing solid catalyst, more specifically a process for producing an aromatic hydrocarbon efficiently from a lower hydrocarbon gas essentially containing methane by activating the molybdenum-containing solid catalyst with maintaining a high yield for a long period of time. The process comprises a pre-contacting step of allowing a molybdenum-containing solid catalyst to contact with a pre-contacting gas comprising at least one selected from a lower hydrocarbon and a hydrogen gas; and a reaction step of allowing the pre-contacted catalyst to contact with a raw material gas essentially containing methane, to generate an aromatic hydrocarbon, wherein the starting temperature in the pre-contacting step is lower than the reaction temperature, and the temperature during the pre-contacting step from the beginning to the end is not over the reaction temperature.
    Type: Application
    Filed: July 31, 2008
    Publication date: July 22, 2010
    Inventors: Toru Nishimura, Shinobu Aoki, Yan Liu
  • Patent number: 7728186
    Abstract: In a process for converting methane to aromatic hydrocarbons, a feed containing methane is contacted with a dehydrocyclization catalyst in a reaction zone under conditions including a first maximum temperature effective to convert the methane to aromatic hydrocarbons and generate coke on the catalyst. A portion of the coked catalyst is transferred from the reaction zone to a separate regeneration zone, where the catalyst portion is contacted with a regeneration gas under conditions including a second maximum temperature less than or equal to the first maximum temperature and effective to at least partially remove coke from the catalyst portion. Before being returned to the reaction zone, the regenerated catalyst portion is contacted with a carburizing gas in a catalyst treatment zone separate from the reaction zone at a third maximum temperature less than the first maximum temperature.
    Type: Grant
    Filed: April 5, 2007
    Date of Patent: June 1, 2010
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Larry L. Iaccino, Neeraj Sangar, Elizabeth L. Stavens
  • Patent number: 7683227
    Abstract: In a process for converting methane to higher hydrocarbons including aromatic hydrocarbons, a feed containing methane is contacted with a dehydrocyclization catalyst in a reaction zone under conditions effective to convert said methane to aromatic hydrocarbons. A first portion of the catalyst is transferred from the reaction zone to a heating zone, where the first catalyst portion is heated by contacting the catalyst with hot combustion gases generated by burning a supplemental source of fuel. The heated first catalyst portion is then returned to the reaction zone.
    Type: Grant
    Filed: April 21, 2006
    Date of Patent: March 23, 2010
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Larry L. Iaccino, Neeraj Sangar, Elizabeth L. Stavens
  • Patent number: 7659437
    Abstract: A process for converting methane to higher hydrocarbon(s) including aromatic hydrocarbon(s) comprises providing a hydrocarbon feedstock containing methane and a catalytic particulate material to a reactor system having at least first and second reaction zones connected in series. Each of the reaction zones is operated under reaction conditions sufficient to convert at least a portion of the methane to said higher hydrocarbon(s) and is maintained in a moving bed fashion, with the bulk of the catalytic particulate material being moved from the first reaction zone to the second reaction zone and with the bulk of the hydrocarbon feedstock being moved from the second reaction zone to the first reaction zone.
    Type: Grant
    Filed: March 29, 2007
    Date of Patent: February 9, 2010
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Larry L. Iaccino, Elizabeth L. Stavens, Neeraj Sangar
  • Publication number: 20100016647
    Abstract: A catalyst for producing aromatic compounds from lower hydrocarbons while improving activity life stability of methane conversion rate; benzene formation rate; naphthalene formation rate; and total formation rate of benzene, toluene and xylene is formed by loading molybdenum and copper on metallo-silicate serving as a substrate and then calcining the metallo-silicate. When the catalyst is reacted with a reaction gas containing lower hydrocarbons and carbonic acid gas, aromatic compounds are produced. In order to obtain the catalyst, it is preferable that molybdenum and copper are loaded on zeolite formed of metallo-silicate after the zeolite is treated with a silane compound larger than a pore of the zeolite in diameter and having an amino group and a straight-chain hydrocarbon group, the amino group being able to selectively react with the zeolite at a Bronsted acid point of the zeolite. It is preferable that a loaded amount of molybdenum is within a range of from 2 to 12 wt.
    Type: Application
    Filed: February 13, 2008
    Publication date: January 21, 2010
    Applicant: MEIDENSHA CORPORATION
    Inventors: Shinichi Yamada, Tomohiro Yamada, Yuji Ogawa, Hirokazu Akiyama, Takuya Hatagishi
  • Patent number: 7589246
    Abstract: In a process for converting methane to aromatic hydrocarbons, a feed containing methane and a particulate catalytic material are supplied to a reaction zone operating under reaction conditions effective to convert at least a portion of the methane to aromatic hydrocarbons and to deposit carbonaceous material on the particulate catalytic material causing catalyst deactivation. At least a portion of the deactivated particulate catalytic material is removed from the reaction zone and is heated to a temperature of about 700° C. to about 1200° C. by direct and/or indirect contact with combustion gases produced by combustion of a supplemental fuel. The heated particulate catalytic material is then regenerated with a hydrogen-containing gas under conditions effective to convert at least a portion of the carbonaceous material thereon to methane and the regenerated catalytic particulate material is recycled back to the reaction zone.
    Type: Grant
    Filed: March 3, 2008
    Date of Patent: September 15, 2009
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Larry L. Iaccino, Teng Xu, J. Scott Buchanan, Neeraj Sangar, Jeremy J. Patt, Mark A. Nierode, Kenneth R. Clem, Mobae Afeworki
  • Publication number: 20080177119
    Abstract: This invention is for a catalyst for conversion of a hydrocarbonaceous feed. The catalyst is a zeolite aluminosilicate with a silicon to aluminum molar ratio from about 70:1 to about 100:1 on which a noble metal has been deposited. The zeolite catalyst may contain other optional tetravalent and trivalent elements in the zeolite framework. The zeolite structure may be MFI, FAU, TON, MFL, VPI, MEL, AEL, AFI, MWW or MOR. The catalyst is synthesized by preparing a zeolite containing aluminum, silicon and, optionally, other elements, such as germanium, in the framework, depositing a noble metal, such as platinum, on the zeolite and calcining the zeolite. The catalyst may be used for aromatization of alkanes to aromatics. One embodiment is a MFI zeolite catalyst which may be used for the aromatization of alkanes having two to six carbon atoms per molecule to aromatics, such as benzene, toluene and xylenes.
    Type: Application
    Filed: January 22, 2007
    Publication date: July 24, 2008
    Inventors: Gopalakrishnan G. Juttu, Robert Scott Smith
  • Patent number: 7067708
    Abstract: The present invention relates to a process for the preparation of para-xylene from trimethylpentane.
    Type: Grant
    Filed: June 3, 2003
    Date of Patent: June 27, 2006
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Leo E. Manzer, Kostantinos Kourtakis, Norman Herron, Eugene M. McCarron, Paul D. VerNooy
  • Patent number: 7019184
    Abstract: The present invention provides a process for natural gas in the form, e.g., of stranded gas or associated gas to transportable liquids. More particularly, the present invention provides a process in which the gas is non-oxidatively converted to aromatic liquid, preferably in proximity to the welihead, which may be onshore or offshore. In one aspect, the present invention provides integration of separation of wellhead fluids into associated gas and crude with blending of the aromatic liquid derived from the gas with the crude. Alternatively, or in combination, in another aspect, the present invention provides integration of conversion of byproduct hydrogen to power with non-oxidative conversion of gas to aromatic liquid.
    Type: Grant
    Filed: May 6, 2002
    Date of Patent: March 28, 2006
    Assignee: Conocophillips Company
    Inventors: Joe D. Allison, Neil Meldrum, Doug S. Jack, Marc J. Ledoux
  • Patent number: 6797850
    Abstract: A chromium catalyst is disclosed for use in dehydrogenation and dehydrocyclization processes.
    Type: Grant
    Filed: August 23, 2002
    Date of Patent: September 28, 2004
    Assignee: Invista North America S.a.r.l.
    Inventors: Kostantinos Kourtakis, Leo E. Manzer
  • Publication number: 20040015026
    Abstract: The present invention relates to a process for the preparation of para-xylene from trimethylpentane.
    Type: Application
    Filed: June 3, 2003
    Publication date: January 22, 2004
    Inventors: Leo E. Manzer, Kostantinos Kourtakis, Norman Herron, Eugene M. McCarron, Paul D. VerNooy
  • Publication number: 20030166983
    Abstract: A catalyst composition and a process for converting a hydrocarbon stream such as, for example, gasoline to C6 to C8 aromatic hydrocarbons such as toluene and xylenes are disclosed. The catalyst composition comprises an alumina, a silica, and a metal wherein the weight ratio of aluminum to silicon is in the range of from about 0.002:1 to about 0.6:1. The process comprises contacting a hydrocarbon stream with the catalyst composition under a condition sufficient to effect the conversion of a hydrocarbon to a C6 to C8 aromatic hydrocarbon. Also disclosed is a process for producing the catalyst composition which comprises: (1) contacting a zeolite with an effective amount of an acid under a condition sufficient to effect a reduction in aluminum content of the zeolite to produce an acid-leached zeolite; and (2) impregnating the acid-leached zeolite with an effective amount of a metal compound under a condition sufficient to effect the production of a metal-promoted zeolite.
    Type: Application
    Filed: November 25, 2002
    Publication date: September 4, 2003
    Inventors: An-Hsiang Wu, Charles A. Drake, Ralph J. Melton
  • Patent number: 6600081
    Abstract: The present invention relates to a process for the preparation of para-xylene from trimethylpentane.
    Type: Grant
    Filed: March 15, 2001
    Date of Patent: July 29, 2003
    Inventors: Leo E. Manzer, Kostantinos Kourtakis, Norman Herron, Eugene M. McCarron, Paul D. Ver Nooy
  • Patent number: 6552243
    Abstract: A molybdenum-loaded crystalline aluminosilicate molecular sieve that exhibits the MFI crystal structure and has a silica-to-alumina ratio of about 50:1 is useful for aromatizing a hydrocarbon feed stream. The crystalline aluminosilicate preferably has an external surface acidity selectively passivated by means of an amorphous silica layer. A process for the aromatization of methane comprises a one- or multi-step process that contacts a feed stream comprising at least methane with a catalyst composition comprising the preferred molecular sieve, at hydrocarbon conversion conditions that include a temperature of 600-800° C., a pressure of less than 5 atmospheres absolute and a Weight Hourly Space Velocity (WHSV) of 0.1-10 h−1, with the external surface acidity of the crystalline aluminosilicate preferably selectively passivated by an amorphous silica layer. C6-plus aromatic hydrocarbons are preferably recovered from the process by means of an intermediate separation step.
    Type: Grant
    Filed: July 27, 2001
    Date of Patent: April 22, 2003
    Assignee: Conoco Phillips Company
    Inventors: Joe D. Allison, Stephan Basso, Marc LeDoux, Cuong Pham-Huu, Harold A. Wright
  • Patent number: 6514896
    Abstract: A process for making an improved zeolite catalyst composition comprising acid-treating a zeolite to provide an acid-treated zeolite, ion-exchanging the ions of such acid-treated zeolite with ions of zinc and at least one other metal in the presence of an ion-exchange medium, and then treating such acid-treated, ion-exchanged zeolite in a steam atmosphere. An improved zeolite catalyst composition made by such process is also disclosed. Processes are also disclosed for using the improved zeolite catalyst composition, made by the novel process, in the conversion of hydrocarbons, preferably non-aromatic hydrocarbons, to lower olefins (such as ethylene and propylene) and aromatic hydrocarbons (such as benzene, toluene, and xylene).
    Type: Grant
    Filed: January 6, 2000
    Date of Patent: February 4, 2003
    Assignee: Phillips Petroleum Company
    Inventors: Charles A. Drake, An-hsiang Wu
  • Publication number: 20020007100
    Abstract: The present invention relates to a process for the preparation of para-xylene from trimethylpentane.
    Type: Application
    Filed: March 15, 2001
    Publication date: January 17, 2002
    Inventors: Leo E. Manzer, Norman Herron, Kostantinos Kourtakis, Eugene M. McCarron, Paul D. Ver nooy
  • Patent number: 6300376
    Abstract: Indane dimer compounds and their pharmaceutical use particularly to achieve smooth muscle relaxing activity and/or mast cell stabilizing activity and/or anti-inflammatory activity are described.
    Type: Grant
    Filed: June 8, 1998
    Date of Patent: October 9, 2001
    Assignee: Venantius Limited
    Inventors: John Walsh, Neil Frankish, Helen Sheridan, Ronan Farrell, William Byrne
  • Publication number: 20010014645
    Abstract: There is provided a catalyst exhibiting a high activity and less catalytic deterioration, as well as a high selectivity, suitable for use in allowing aromatic hydrocarbons of 9 or more carbon atoms to react, and thereby converting them into toluene and aromatic hydrocarbons of 8 carbon atoms more useful as gasoline bases, and a conversion method using the catalyst. The catalyst is used for converting aromatic hydrocarbons of 9 or more carbon atoms in a material oil containing a component with a boiling point exceeding 210° C. into toluene and aromatic hydrocarbons of 8 carbon atoms in the presence of hydrogen, and contains a carrier containing one or more than one zeolites in which the maximum pore diameter of micropores is in a range of 0.6 to 1.0 nm; and one or more than one metals selected from the Group VIA metals of the Periodic Table or compounds thereof.
    Type: Application
    Filed: March 1, 2001
    Publication date: August 16, 2001
    Inventors: Katuhiko Ishikawa, Eiji Yasui, Fumio Haga, Toshio Waku, Toshiyuki Enomoto
  • Publication number: 20010008949
    Abstract: A catalyst composition, a process for producing the composition and a hydrocarbon conversion process for converting a saturated hydrocarbon to a C6 to C8 aromatic hydrocarbon such as a xylene are disclosed. The composition comprises a zeolite having incorporated therein a promoter comprising carbon and a metal or metal oxide. The composition can be produced by incorporating a metal compound into the zeolite followed by thermal treatment of the resulting zeolite with a hydrocarbon. The hydrocarbon conversion process comprises contacting a fluid which comprises a saturated hydrocarbon with the catalyst composition under a condition sufficient to effect the conversion of a saturated hydrocarbon to a C6 to C8 aromatic hydrocarbon.
    Type: Application
    Filed: September 30, 1997
    Publication date: July 19, 2001
    Applicant: PHILLIPS PETROLEUM COMPANY
    Inventors: AN-HSIANG WU, CHARLES A. DRAKE
  • Patent number: 6132695
    Abstract: A process of preparing a Group IV, V, or VI metal carbonitride including reacting a Group IV, V, or VI metal amide complex with ammonia to obtain an intermediate product; and, heating the intermediate product to temperatures and for times sufficient to form a Group IV, V, or VI metal carbonitride is provided together with the product of the process and a process of reforming an n-alkane by use of the product.
    Type: Grant
    Filed: May 29, 1998
    Date of Patent: October 17, 2000
    Assignee: The Regents of the University of California
    Inventors: Joseph Barrera, David C. Smith
  • Patent number: 6124515
    Abstract: A catalyst composition, a process for producing the catalyst composition, and a hydroconversion process for converting a fluid stream comprising at least one saturated hydrocarbon to C.sub.6 to C.sub.8 aromatic hydrocarbons such as benzene, toluene, and xylenes are disclosed. The catalyst composition comprises a zeolite and a promoter. The process for producing the composition comprises the steps of: (1) combining a zeolite with a complexing ligand and a promoter compound under a condition sufficient to produce a modified zeolite; and (2) heating the modified zeolite to produce a promoted zeolite. The hydroconversion process comprises contacting a fluid stream with the catalyst composition under a condition sufficient to effect the conversion of a saturated hydrocarbon to a C.sub.6 to C.sub.8 aromatic hydrocarbon.
    Type: Grant
    Filed: September 23, 1999
    Date of Patent: September 26, 2000
    Assignee: Phillips Petroleum Company
    Inventors: An-hsiang Wu, Charles A. Drake
  • Patent number: 6063975
    Abstract: A catalyst composition, a process for producing the composition, and a hydrotreating process for converting a hydrocarbon stream such as, for example, gasoline, to olefins and C.sub.6 to C.sub.8 aromatic hydrocarbons such as toluene and xylenes are disclosed. The catalyst composition comprises a zeolite, a clay, and a promoter. The process for producing the composition comprises the steps: (1) combining a zeolite with a clay and a promoter under a condition sufficient to bind the clay to the zeolite to produce a clay-bound zeolite; and (2) heating the clay-bound zeolite to produce a modified zeolite. The hydrotreating process comprises contacting a hydrocarbon stream with the catalyst composition under a condition sufficient to effect the conversion of a hydrocarbon to an olefin and a C.sub.6 to C.sub.8 aromatic hydrocarbon.
    Type: Grant
    Filed: October 14, 1998
    Date of Patent: May 16, 2000
    Assignee: Phillips Petroleum Company
    Inventors: Charles A. Drake, An-hsiang Wu
  • Patent number: 6045689
    Abstract: A process for converting hydrocarbons into aromatic compounds, which entails contacting a composition containing hydrocarbons with a catalyst under temperature and pressure conditions to produce the aromatic compounds, the catalyst containing a matrix of .eta. transition alumina and/or .gamma. transition alumina. The catalyst contains 0.001 to 2 wt % of silicon, 0.1 to 15 wt % of at least one platinum group metal, and 0.005 to 10 wt % of at least one promoter metal. The promoter metals may be tin, germanium, indium, gallium, thallium, antimony, lead, rhenium, manganese, chromium, molybdenium or tungsten. The catalyst may also contain a doping metal.
    Type: Grant
    Filed: December 15, 1997
    Date of Patent: April 4, 2000
    Assignee: Institut Francais du Petrole
    Inventors: Fabio Alario, Jean-Marie Deves, Patrick Euzen
  • Patent number: 6028027
    Abstract: Catalysts comprising iron and potassium and, if desired, further elements, which catalysts are suitable for dehydrogenating hydrocarbons to give the corresponding olefinically unsaturated hydrocarbons, are prepared by calcining a finely divided dry or aqueous mixture of an iron compound with a potassium compound and, if desired, compounds of further elements in a first step that agglomerates having a diameter of from 5 to 50 .mu.m and formed from smaller individual particles are obtained and, in a second step, preferably after shaping, calcining it at from 300 to 1000.degree. C., with the maximum calcination temperature in the second step preferably being at least 30.degree. below the calcination temperature in the first step. The catalysts thus prepared are useful, in particular, for dehydrogenating ethylbenzene to give styrene.
    Type: Grant
    Filed: March 17, 1998
    Date of Patent: February 22, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Michael Baier, Christopher William Rieker, Otto Hofstadt, Wolfgang Buchele, Wolfgang Jurgen Popel, Hermann Petersen, Norbert Neth
  • Patent number: 6007700
    Abstract: Gasolines are reformed and parafin and naphthene hydrocarbons are converted to aromatic compounds by contacting the hydrocarbons with a catalyst comprising a matrix of .eta. transition alumina and .gamma. transition alumina. The catalyst contains at least one doping metal, at least one halogen, at least one noble metal and at least one promoter metal. The doping metals are selected from titanium, zirconium, hafnium, cobalt, nickel, zinc, and the lanthanides and the promoter metals are selected from tin, germanium, indium, gallium, thallium, antimony, lead, rhenium, manganese, chromium, molybdenum and tungsten.
    Type: Grant
    Filed: December 15, 1997
    Date of Patent: December 28, 1999
    Assignee: Institut Francais Du Petrole
    Inventors: Fabio Alario, Jean-Marie Deves, Patrick Euzen
  • Patent number: 5998686
    Abstract: A dehydrocyclo-oligomerization process is provided for converting aliphatic hydrocarbons to aromatics by contacting the feedstock under conversion conditions which a zeolite bound zeolite catalyst. The zeolite bound zeolite catalyst comprises first zeolite crystals which are bound together by second zeolite crystals. If the zeolite bound zeolite catalyst is selectivated, the process can produce greater than equilibrium amounts of paraxylene.
    Type: Grant
    Filed: May 29, 1997
    Date of Patent: December 7, 1999
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Kenneth R. Clem, Gary D. Mohr, Robert Scott Smith
  • Patent number: 5968345
    Abstract: A process for the conversion of a hydrocarbon load containing paraffin, naphthene and aromatic hydrocarbons having 5 to 12 carbon atoms into aromatic compounds, which entails contacting the load with a catalyst under temperature and pressure conditions to produce the aromatic compounds, the catalyst containing:a matrix consisting of 0 to 100% by weight of .eta. transition alumina, the remaining weight percentage of the matrix, up to 100%, consisting of .gamma. transition alumina, andat least one doping metal selected from the group consisting of alkali metals and alkaline-earth metals,at least one halogen selected from the group consisting of fluorine, chlorine, bromine and iodine,at least one noble metal selected from the platinum group, andat least one promoter metal selected from the group consisting of tin, germanium, indium, gallium, thallium, antimony, lead, rhenium, manganese chromium, molybdenum and tungsten,the catalyst having previously been hydrothermally treated at a temperature of 300 to 1,000.
    Type: Grant
    Filed: December 15, 1997
    Date of Patent: October 19, 1999
    Assignee: Institut Francais du Petrole
    Inventors: Fabio Alario, Jean-Marie Deves, Patrick Euzen
  • Patent number: 5952534
    Abstract: The invention is related to a process for making 2,6-dimethylnaphthalene from p-xylene and 1- or 2-butene or butadiene via 1-(p-tolyl)-2-methylbutane or 1-(p-tolyl)-2-methylbutane. 2,6-dimethylnaphthalene can be used for making polyethylenenaphthalate.
    Type: Grant
    Filed: March 20, 1998
    Date of Patent: September 14, 1999
    Assignee: Optatech Oy
    Inventors: Kari Vahteristo, Erkki Halme, Salme Koskimies, Sigmund M. Csicsery, Markku Laatikainen, Vesa Niemi
  • Patent number: 5936135
    Abstract: The present invention describes a process for the conversion of a lower alkane or a mixture of lower alkanes or a feed containing lower alkane(s) to aromatics or higher hydrocarbons, which comprises (i) treating a bifunctional pentasil zeolite catalyst, optionally containing one or more transition elements, having strong dehydrogenation and acid sites with a mixture of H.sub.2, steam and optionally the presence of an inert gas at a gas hourly space velocity of at least about 500 cm.sup.3 g.sup.-1 h.sup.-1 at a temperature in the range of 400.degree.-800.degree. C. and pressure in the range of 1-5 atm. for a period of at least 0.5 h; (ii) treating the catalyst obtained in step (i) with air or O.sub.2 at a gas hourly space velocity of at least about 200 cm.sup.3 g.sup.-1 h.sup.-1) at a temperature in the range of 400-800.degree. C. and pressure in the range of 1-5 atm for a period of at least 0.
    Type: Grant
    Filed: August 26, 1997
    Date of Patent: August 10, 1999
    Assignee: Council of Scientific & Industrial Research
    Inventors: Vasant R. Choudhary, Anil K. Kinage, Tushar V. Choudhary
  • Patent number: 5641393
    Abstract: A crystalline zeolite high-silica SSZ-37 is prepared using a N,N-dimethyl-4-azoniatricyclo [5.2.2.0.sup.(2,6) ] undec-8-ene cation as a template wherein said zeolite is used in hydrocarbon conversion processes.
    Type: Grant
    Filed: August 8, 1995
    Date of Patent: June 24, 1997
    Assignee: Chevron U.S.A. Inc.
    Inventor: Yumi Nakagawa
  • Patent number: 5468370
    Abstract: A catalyst for chemical and petrochemical reactions and a process for its production. The catalyst comprises an oxide of one of the transition metals, rare earth elements, or actinide elements, e.g., molybdenum, having on its surface carbides and oxycarbides, the core being the metal or the metal oxide. In the process for catalyst production, the reaction gas mixture containing carbon products is passed onto the oxide, leading to a progressive carburization of the surface of the oxide and to a progressive increase in the efficiency of the catalyst.
    Type: Grant
    Filed: December 7, 1993
    Date of Patent: November 21, 1995
    Assignee: Pechiney Recherche
    Inventors: Marc-Jacques Ledoux, Jean-Louis Guille, Cuong Pham Huu, Hugh Dunlop, Marie Prin
  • Patent number: 5396009
    Abstract: Zeolite L with flat basal planes, and reduced crystallite size is prepared in a synthesis modified by the addition of small amounts of additional metal such as magnesium, calcium, barium, cobalt, zinc, chromium, manganese or nickel. The addition of these metals also suppresses unwanted zeolite W formation even when the synthesis would otherwise form this zeolite.
    Type: Grant
    Filed: July 2, 1993
    Date of Patent: March 7, 1995
    Assignee: Exxon Research & Engineering
    Inventor: Johannes P. Verduijn