Patents Examined by Thuan Dinh Dang
  • Patent number: 8227652
    Abstract: Methods are provided for producing alkylbenzenes, such as propylbenzene, from aromatics, such as toluene, and alkenes, such as ethylene. Such methods comprise combining the toluene with about 100 ppm to about 350 ppm water and alkali metal catalyst, activating the catalyst at about 180° C. to about 220° C., adding the ethylene and conducting the synthesis reaction at about 130° C. to about 150° C.
    Type: Grant
    Filed: March 27, 2008
    Date of Patent: July 24, 2012
    Assignee: Albemarle Corporation
    Inventors: Robert W. Nelson, Christopher A. Curtis, Stephen E. Belmont
  • Patent number: 8222468
    Abstract: The present invention provides a process for conversion of feedstock comprising organic compounds to desirable conversion product at organic compound conversion conditions in the presence of catalyst comprising an acidic, porous crystalline material and having a Proton Density Index of greater than 1.0, for example, from greater than 1.0 to about 2.0, e.g. from about 1.01 to about 1.85. The acidic, porous crystalline material of the catalyst may comprise a porous, crystalline material or molecular sieve having the structure of zeolite Beta, an MWW structure type material, e.g. MCM-22, MCM-36, MCM-49, MCM-56, or a mixture thereof.
    Type: Grant
    Filed: May 8, 2006
    Date of Patent: July 17, 2012
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Michael C. Clark, Teng Xu, Matthew J. Vincent
  • Patent number: 8222473
    Abstract: A process for isomerizing light paraffins using a catalyst comprising an STI-type zeolite and at least one Group VIII metal. It has been found that the catalyst can selectively convert C6 paraffins into the more favorable higher octane C6 isomer, namely 2,3-dimethylbutane (RON=105), over the less favorable C6 isomer, namely octane 2,2-dimethylbutane (RON=94).
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: July 17, 2012
    Assignee: Chevron U.S.A. Inc.
    Inventors: Cong-Yan Chen, Xiaoying Ouyang, Tracy M. Davis, Stacey I. Zones
  • Patent number: 8217214
    Abstract: Disclosed are ethylbenzene processes in which a series-arranged or combined vapor phase alkylation/transalkylation reaction zone is retrofitted to have a vapor phase alkylation reactor and a liquid phase transalkylation reactor, and in which a parallel-arranged vapor phase alkylation reactor and vapor phase transalkylation reactor is retrofitted to have a vapor phase alkylation reactor and liquid phase transalkylation reactor, wherein the xylenes content of the ethylbenzene product is less than 700 wppm.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: July 10, 2012
    Assignees: ExxonMobil Chemical Patents Inc., Stone & Weber, Inc.
    Inventors: Michael C. Clark, Vijay Nanda, Carlos N. Lopez, Brian Maerz, Maruti Bhandarkar
  • Patent number: 8217213
    Abstract: This disclosure relates to a process for manufacturing a mono-cycloalkyl-substituted aromatic compound, said process comprising contacting a feedstock comprising an aromatic compound and hydrogen under hydroalkylation reaction conditions with a catalyst system comprising a molecular sieve and at least one metal with hydrogenation activity, wherein said molecular sieve has, in its as-synthesized form and in calcined form, an X-ray diffraction pattern including peaks having a d-spacing maximum in the range of 14.17 to 12.57 Angstroms, a d-spacing maximum in the range of 12.1 to 12.56 Angstroms.
    Type: Grant
    Filed: July 15, 2009
    Date of Patent: July 10, 2012
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Wieslaw J. Roth, Terry E. Helton, Jane C. Cheng, Michael J. Brennan
  • Patent number: 8212097
    Abstract: A process for alkylating aromatic compounds using a family of zeolites, examples of which have been designated UZM-5, UZM-5P and UZM-6, and are represented by the empirical formula: Mmn+Cgh+Rrp+Al(1-x)ExSiyOz where M is an alkali or alkaline earth metal, E is an optional framework element, C organic nitrogen containing cation template, and R is an organic cation crystallization template. The zeolites have at least two x-ray diffraction peaks, one at a d-spacing of 3.9±0.12 ? and one at a d-spacing 8.6±0.20 ?; a tetragonal unit cell; and a micropore volume ranging from about 0.10 cc/g to about 0.18 cc/g.
    Type: Grant
    Filed: June 29, 2011
    Date of Patent: July 3, 2012
    Assignee: UOP LLC
    Inventors: Deng-Yang Jan, Jaime G. Moscoso, Raelynn M. Miller, Susan C. Koster, Julio C. Marte
  • Patent number: 8212095
    Abstract: A method for the production of styrene comprising reacting toluene and syngas in one or more reactors is disclosed.
    Type: Grant
    Filed: August 22, 2011
    Date of Patent: July 3, 2012
    Assignee: Fina Technology, Inc.
    Inventors: Joseph E. Pelati, James R. Butler
  • Patent number: 8212096
    Abstract: This disclosure relates to a process for manufacturing a mono-cycloalkyl-substituted aromatic compound, said process comprising contacting a feedstock comprising an aromatic compound and hydrogen under hydroalkylation reaction conditions with a catalyst system comprising a molecular sieve, wherein said molecular sieve comprises a framework of tetrahedral atoms bridged by oxygen atoms, the tetrahedral atom framework being defined by a unit cell with atomic coordinates in nanometers shown in Table 2.
    Type: Grant
    Filed: July 15, 2009
    Date of Patent: July 3, 2012
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Wieslaw J. Roth, Terry E. Helton, Jane C. Cheng, Michael J. Brennan
  • Patent number: 8212099
    Abstract: The present invention is directed to processes using a borosilicate ZSM-48 as a catalyst for the selective hydroconversion of heavy normal paraffins into lighter normal paraffin products, with minimal formation of isoparaffins. The borosilicate ZSM-48 molecular sieve has a mole ratio of between 40 and 400 of silicon oxide to boron oxide, synthesized using novel structure directing agents.
    Type: Grant
    Filed: November 5, 2009
    Date of Patent: July 3, 2012
    Assignee: Chevron U.S.A. Inc.
    Inventor: Allen W. Burton, Jr.
  • Patent number: 8207387
    Abstract: Provided is a method of producing polypropylene comprising contacting an oxygenate stream with a molecular sieve to form an olefin stream comprising propane, propylene and dimethylether; introducing the olefin stream into a propylene rectification tower possessing from less than 200 theoretical stages; withdrawing from the propylene rectification tower a bottom stream comprising dimethylether, a sidestream comprising propane, and an overhead stream comprising propane and propylene; introducing the overhead to a condenser to accumulate a propylene-rich stream; passing the propylene-rich stream to a splitter to produce (i) a first propylene stream that is introduced into a polypropylene reactor to contact a polyolefin catalyst, and (ii) a second propylene stream that is re-introduced into the rectification tower, the first and second propylene streams introduced at a desirable ratio; and recirculating the dimethylether stream to contact the molecular sieve.
    Type: Grant
    Filed: May 3, 2010
    Date of Patent: June 26, 2012
    Assignee: Exxonmobil Chemical Patents Inc.
    Inventors: Gerald G. McGlamery, Jr., Lawrence C. Smith, Jennifer L. Bancroft
  • Patent number: 8207389
    Abstract: We provide a process for making a base oil, comprising: oligomerizing an olefin feed comprising propylene and propane with an ionic liquid catalyst at a temperature from 0° C. to 150° C. to make a base oil having: i. from 45 to 70 wt % hydrocarbons boiling at 482° C. (900° F.) or higher, ii. a viscosity index from 25 to 90, and iii. a cloud point less than ?25° C.
    Type: Grant
    Filed: November 14, 2011
    Date of Patent: June 26, 2012
    Assignee: Chevron U.S.A. Inc.
    Inventors: Saleh Elomari, Stephen Joseph Miller
  • Patent number: 8203026
    Abstract: We provide a process for making a base oil, comprising: mixing one or more longer chain alpha olefins comprising C6+ olefins with an olefin feed comprising propylene to make a mixed olefin feed; and oligomerizing the mixed olefin feed using an acidic chloroaluminate ionic liquid catalyst to form an oligomer; wherein the oligomer is a base oil that has: i. a kinematic viscosity at 100° C. greater than 10 mm2/s; ii. a viscosity index from 50 to 90; iii. a pour point less than ?19° C.; and iv. a cloud point less than ?50° C.
    Type: Grant
    Filed: November 14, 2011
    Date of Patent: June 19, 2012
    Assignee: Chevron U.S.A. Inc.
    Inventors: Saleh Elomari, Stephen Joseph Miller
  • Patent number: 8198496
    Abstract: This disclosure relates to a process for manufacturing a mono-alkylaromatic aromatic compound, said process comprising contacting a feedstock comprising an alkylatable aromatic compound and an alkylating agent under alkylation reaction conditions with a catalyst comprising EMM-13, wherein said EMM-13 is a molecular sieve comprising a framework of tetrahedral atoms bridged by oxygen atoms, the tetrahedral atom framework being defined by a unit cell with atomic coordinates in nanometers shown in Table 3.
    Type: Grant
    Filed: July 15, 2009
    Date of Patent: June 12, 2012
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Terry E. Helton, Matthew J. Vincent
  • Patent number: 8198494
    Abstract: A process for producing alkylate comprising contacting a first hydrocarbon stream comprising at least one olefin having from 2 to 6 carbon atoms which contains 1-butene with an isomerization catalyst under conditions favoring the isomerization of 1-butene to 2-butene so the isomerized stream contains a greater concentration of 2-butene than the first hydrocarbon stream and contacting the isomerized stream and a second hydrocarbon stream comprising at least one isoparaffin having from 4 to 6 carbon atoms with an acidic ionic liquid catalyst under alkylation conditions to produce an alkylate stream, wherein the alkylate stream has a RON that is increased from 5 to 32 numbers compared to a comparison alkylate stream made from the first hydrocarbon stream without the step of contacting with the isomerization catalyst.
    Type: Grant
    Filed: February 21, 2011
    Date of Patent: June 12, 2012
    Assignee: Chevron U.S.A. Inc.
    Inventors: Saleh Elomari, Hye Kyung C. Tlmken
  • Patent number: 8198500
    Abstract: A process comprising contacting an olefin feed from a Fischer-Tropsch condensate with an isoparaffin, an acidic chloroaluminate ionic liquid catalyst, and a Brönsted acid; whereby a base oil is produced by concurrent oligomerization and alkylation.
    Type: Grant
    Filed: November 4, 2011
    Date of Patent: June 12, 2012
    Assignee: Chevron U.S.A. Inc.
    Inventors: Saleh Elomari, Russell Roland Krug, Stephen Joseph Miller
  • Patent number: 8198501
    Abstract: The present invention is directed to a process for isomerizing light paraffins by using a catalyst containing a zeolite selected from the group consisting of CON- and TUN-type zeolites, and at least one Group VIII metal. It has been found that the CON- and TUN-type zeolite catalysts of the present invention selectively convert C6 paraffins into the more favorable higher octane C6 isomer, namely 2,3-dimethylbetane (RON 101.0), over the less favorable C6 isomer, namely octane 2,2-dimethylbutane (RON 91.8).
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: June 12, 2012
    Assignee: Chevron U.S.A. Inc.
    Inventors: Cong-Yan Chen, Stacey I. Zones
  • Patent number: 8193404
    Abstract: Methods and processes for increasing the efficiency and/or expanding the capacity of a dehydrogenation unit by use of at least one direct heating unit are described.
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: June 5, 2012
    Assignee: Fina Technology, Inc.
    Inventors: Vincent A. Welch, Slawomir A. Oleksy
  • Patent number: 8188326
    Abstract: A method for producing adamantane by performing an isomerization reaction in two stages using endo-tetrahydrodicyclopentadiene and/or exo-tetrahydrodicyclopentadiene as a starting material, wherein in a first-stage isomerization reaction from endo-tetrahydrodicyclopentadiene (tricyclo[5.2.1.02,6]decane) to exo-tetrahydrodicyclopentadiene (tricyclo[5.2.1.02,6]decane), an HF catalyst alone or two catalysts of an HF catalyst and a BF3 catalyst are used in the absence of a solvent; and in a second-stage isomerization reaction from exo-tetrahydrodicyclopentadiene (tricyclo[5.2.1.02,6]decane) to adamantane (tricyclo[3.3.1.13,7]decane), an HF catalyst and a BF3 catalyst are used in the absence of a solvent.
    Type: Grant
    Filed: May 7, 2009
    Date of Patent: May 29, 2012
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Takeshi Kawai, Mitsuharu Kitamura
  • Patent number: 8183424
    Abstract: In a process for producing xylene by transalkylation of a C9+ aromatic hydrocarbon feedstock with a C6 and/or C7 aromatic hydrocarbon, the C9+ aromatic hydrocarbon feedstock, at least one C6 and/or C7 aromatic hydrocarbon and hydrogen are contacted with a first catalyst comprising (i) a first molecular sieve having a Constraint Index in the range of about 3 to about 12 and (ii) at least first and second different metals or compounds thereof of Groups 6 to 12 of the Periodic Table of the Elements. Contacting with the first catalyst is conducted under conditions effective to dealkylate aromatic hydrocarbons in the feedstock containing C2+ alkyl groups and to saturate C2+ olefins formed so as to produce a first effluent.
    Type: Grant
    Filed: December 20, 2010
    Date of Patent: May 22, 2012
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Doron Levin, April D. Ross, James H. Beech, Jr.
  • Patent number: 8178738
    Abstract: Methods and systems for extending the life of a dehydrogenation catalyst are described herein. For example, one embodiment includes providing an alkyl aromatic hydrocarbon feed stream to a reaction chamber, contacting the feed stream with a dehydrogenation catalyst to form a vinyl aromatic hydrocarbon, the dehydrogenation catalyst including iron oxide and an alkali metal catalysis promoter and supplying a catalyst life extender to at least one reaction chamber, the reaction chamber loaded with the dehydrogenation catalyst, wherein the catalyst life extender includes a potassium salt of a carboxylic acid.
    Type: Grant
    Filed: February 23, 2009
    Date of Patent: May 15, 2012
    Assignee: Fina Technology, Inc.
    Inventor: James Butler