Catalyst – solid sorbent – or support therefor: product or process – Zeolite or clay – including gallium analogs – Gallium containing
Patent
1982-07-08
1984-06-05
Dees, Carl F.
Catalyst, solid sorbent, or support therefor: product or process
Zeolite or clay, including gallium analogs
Gallium containing
502 64, B01J 2904, B01J 2906
Patent
active
044529082
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.
REFERENCES:
patent: 3213013 (1965-10-01), Arey, Jr.
patent: 3264208 (1966-08-01), Plank et al.
patent: 3360484 (1967-12-01), Laurent
patent: 3509042 (1970-04-01), Miale
Ball William J.
Stewart David G.
Dees Carl F.
The British Petroleum Company p.l.c.
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