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:
May. 13, 1986
Filed:
Jan. 03, 1985
Julius Scherzer, Anaheim, CA (US);
Union Oil Company of California, Los Angeles, CA (US);
Abstract
Hydrocarbon feedstocks containing relatively high levels of metal contaminants, such as nickel and vanadium, are converted via catalytic cracking into products of lower average molecular weight by contacting the feedstock with a catalyst comprising a (1) porous, inorganic refractory oxide component and (2) a dealuminated Y zeolite having a silica-to-alumina mole ratio above about 6.0. The dealuminated Y zeolite is preferably prepared by contacting an ammonium-exchanged Y zeolite having a silica-to-alumina mole ratio below about 6.0 with an aqueous solution of ammonium hexafluorosilicate. The refractory oxide component will preferably contain alumina and a clay such as kaolin. The catalyst may also contain a nondealuminated Y zeolite, preferably one that has been ion exchanged with rare earth cations. Typically, the hydrocarbon feedstock will contain contaminant metals in sufficient quantities such that their concentration exceeds about 4.0 ppmw Nickel Equivalents.