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:
Jun. 05, 1984
Filed:
Jul. 08, 1982
William J Ball, Capel, GB;
David G Stewart, Epsom, GB;
The British Petroleum Company p.l.c., London, GB;
Abstract
A process for the production of a catalyst based on a crystalline aluminosilicate having a silica to alumina molar ratio greater than 12:1 which is obtained by mixing a source of silica, a source of alumina, a source of alkali metal, water and a source of ammonium ions in defined proportions, crystallizing the mixture, recovering the crystalline aluminosilicate so-formed, cation-exchanging and/or impregnating the recovered crystalline aluminosilicate and finally calcining, wherein either the recovered crystalline aluminosilicate or the cation-exchanged aluminosilicate or the impregnated aluminosilicate is washed with a solution containing either an organic base, a carboxylic acid, an alcohol, a glycol, a phenol or an ester. The washing treatment results in a reduction in the rate of decline in catalytic activity in reactions such as the conversion of aliphatic to aromatic hydrocarbons.