Zeolite-type catalyst and process for preparing same

Details Zeolite-type catalyst and process for preparing same Zeolite-type catalyst and process for preparing same

1983-12-16

1985-03-05

Shine, W. J.

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Boron or compound containing same

502 60, 423277, B01J 2102, B01J 2108

Patent

active

045031649

ABSTRACT:
A zeolite catalyst having a double structure which comprises a core made of crystalline borosilicate and a shell made of crystalline silicon oxide. The zeolite catalyst is prepared by subjecting an aqueous solution containing a silicon compound to a hydrothermal reaction in the presence of borosilicate crystals. Various olefins are efficiently produced from methanol and/or dimethyl ether by using the zeolite catalyst. Paraxylene is also produced in a high selectivity by reacting toluene with methanol in the presence of the zeolite catalyst.

REFERENCES:
patent: 4088605 (1978-05-01), Rollmann
patent: 4269813 (1981-05-01), Klotz
patent: 4394362 (1983-07-01), Miller

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