The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 14, 1999
Filed:
Apr. 02, 1998
Gerald J Nacamuli, Mill Valley, CA (US);
Roger F Vogel, Fairfield, CA (US);
Stacey I Zones, San Francisco, CA (US);
Chevron Chemical Co. LLC, San Francisco, CA (US);
Abstract
A gas phase, aromatics transalkylation process that comprises contacting a stream containing aromatic hydrocarbons with a catalyst comprising a zeolite selected from the group consisting of SSZ-26, Al-SSZ-33, CIT-1, SSZ-35, and SSZ-44 in the presence of added hydrogen and in the gas phase, to produce transalkylated product. The aromatics stream comprises one or more aromatic hydrocarbons, one of the hydrocarbons having at least one alkyl group attached thereto, the alkyl group comprising a C1, C2, C3 or C4 hydrocarbyl group. A preferred aromatics transalkylation process comprises contacting toluene or benzene or a mixture thereof with a stream containing trimethylbenzene in the presence of added hydrogen. The catalyst preferably contains a mild hydrogenation metal, such as nickel or palladium.