Method for producing isopentene
AssigneeUbe Industries, Ltd.
InventorsShunsuke Nakatomi, Takemi Yamamura, Yoshikazu Akiba
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Abstract
Isopentene is produced in a high yield by a method wherein disproportionation of a hydrocarbon mixture containing n-butene and isobutene is carried out by bringing, at 200.degree. to 350.degree.C, the hydrocarbon mixture into contact with a composite catalyst which has been prepared by depositing a barium or strontium compound and a silver compound onto a carrier material consisting of an activated high purity alumina carrier to produce a precursory composite catalyst, calcining the precursory composite catalyst at 300.degree. to 900.degree.C, and isolating the resulted isopentene from the reaction mixture.
Claims21
A method for producing isopentene comprising the steps of:
- providing a composite catalyst which has been prepared from 100 parts by weight of a carrier material consisting of an activated high purity alumina, 0.5 to 5 parts by weight of a barium or strontium compound calculated in terms of an oxide thereof and 1 to 20 parts by weight of a silver compound calculated in terms of silver metal by depositing said barium or strontium compound and said silver compound onto said alumina carrier to produce a precursory composite catalyst and calcining the precursory composite catalyst at a temperature of 300.degree. to 900.degree.C,
- bringing a hydrocarbon mixture containing isobutene and n-butene into contact with said composite catalyst at a temperature of 200.degree. to 350.degree.C, and;
- isolating the resultant isopentene from the reaction mixture.
Dependencies are inferred from the claim text.