Patents Represented by Attorney Karl K. Brandes

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  • Hydrogenation catalyst composition and a hydrogenation process
    Patent number: 5705723
    Abstract: A composition comprises nickel and a support material which comprises aluminum borate and zirconium borate. In one embodiment, this composition additionally comprises rhenium. Preferably, the catalyst support material is a coprecipitate of aluminum borate and zirconium borate.The above-described composition is employed as a catalyst for hydrogenating aromatic hydrocarbons to saturated hydrocarbons.
    Type: Grant
    Filed: October 24, 1995
    Date of Patent: January 6, 1998
    Assignee: Phillips Petroleum Company
    Inventors: Lyle R. Kallenbach, Marvin M. Johnson
  • Selective hydrogenation process
    Patent number: 5698752
    Abstract: A selective hydrogenation of an alkyne in an olefin-containing fluid is provided which comprises contacting the fluid and hydrogen gas with a catalyst in the presence of at least one sulfur compound, under reaction conditions effective to produce at least one alkene wherein the catalyst comprises at least one alkali metal, fluorine and an inorganic support material.
    Type: Grant
    Filed: July 23, 1996
    Date of Patent: December 16, 1997
    Assignee: Phillips Petroleum Company
    Inventors: Scott H. Brown, James B. Kimble, Stan A. Zisman
  • Hydrodealkylation process
    Patent number: 5689026
    Abstract: A process for hydrodealkylating C.sub.9 -C.sub.12 alkyl-substituted benzenes (preferably trimethylbenzenes) to C.sub.6 -C.sub.8 aromatic hydrocarbons (in particular, toluene and xylenes) and C.sub.1 -C.sub.5 alkanes employs a catalyst containing zeolite Beta, nickel, molybdenum and sulfur (preferably as sulfides of nickel and of molybdenum).
    Type: Grant
    Filed: April 24, 1996
    Date of Patent: November 18, 1997
    Assignee: Phillips Petroleum Company
    Inventors: An-hsiang Wu, Charles A. Drake, Ralph J. Melton
  • Separation of cyclopentadiene from dicyclopentadiene
    Patent number: 5659107
    Abstract: Cyclopentadiene is separated from dicyclopentadiene by means of a sorbent material which contains (i) alkali metal oxide(s) and/or hydroxide(s) and (ii) an inorganic support material. The more preferred sorbent material is Na.sub.2 O and/or NaOH on alumina.
    Type: Grant
    Filed: May 7, 1996
    Date of Patent: August 19, 1997
    Assignee: Phillips Petroleum Company
    Inventors: Tin-Tack Peter Cheung, Marvin M. Johnson
  • Method of preparing transalkylation catalyst
    Patent number: 5612274
    Abstract: A Group VIII metal-promoted zeolite (preferably Pt-promoted H-mordenite) is contacted with ammonium hexafluorosilicate and hydrogen gas at a temperature of about 100.degree.-450.degree. C. The obtained material is an effective catalyst for the transalkylation of aromatic hydrocarbons.
    Type: Grant
    Filed: April 4, 1995
    Date of Patent: March 18, 1997
    Assignee: Phillips Petroleum Company
    Inventors: An-hsiang Wu, Charles A. Drake
  • Alkyne hydrogenation process
    Patent number: 5585318
    Abstract: C.sub.2 -C.sub.6 alkynes (preferably acetylene) contained in feeds which also contain sulfur impurities are hydrogenated to the corresponding alkenes in the presence of a supported palladium catalyst which has been promoted with alkali metal fluoride (preferably potassium fluoride). A specific cataylst consists essentially of a palladium component, at least one alkali metal fluoride (preferably KF) and an inorganic support material (preferably alumina).
    Type: Grant
    Filed: November 20, 1995
    Date of Patent: December 17, 1996
    Assignee: Phillips Petroleum Company
    Inventors: Marvin M. Johnson, Tin-Tack P. Cheung