Patents Represented by Attorney Kenneth H. Johson

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  • Al.sub.2 O.sub.3 alkene isomerization process and catalyst
    Patent number: 5043523
    Abstract: Gamma alumina having a sodium content of less than 0.01 weight percent sodium calculated as Na.sub.2 O and said alumina modified with silicon were found to be superior catalysts for the isomerization of alkenes having at least four carbon atoms, preferably with 0.01 to 1 mole of water per mole of alkene present during the isomerization. Both skeletal isomerization (e.g. n-butene to isobutene) and position isomerization (e.g. butene-2 to butene-1) are obtained.
    Type: Grant
    Filed: December 7, 1990
    Date of Patent: August 27, 1991
    Assignee: Texas Petrochemicals Corporation
    Inventor: Hsu-Hui Hsing