Process for the production of catalysts based on crystalline alu

Details Process for the production of catalysts based on crystalline alu Process for the production of catalysts based on crystalline alu

1984-03-27

1985-02-05

Gantz, Delbert E.

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

By ring formation from nonring moiety, e.g., aromatization,...

585533, C07C 310

Patent

active

044979690

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.
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patent: 3360484 (1967-12-01), Laurent
patent: 3509042 (1970-04-01), Miale
patent: 4341748 (1982-07-01), Plank et al.
patent: 4452907 (1984-06-01), Ball et al.
patent: 4452908 (1984-06-01), Ball et al.

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