Shock calcined aluminosilicate zeolites

Details Shock calcined aluminosilicate zeolites Shock calcined aluminosilicate zeolites

C - Chemistry, Metallurgy

07

C

252/11, 260/622.

C07C 15/08 (2006.01) B01J 37/08 (2006.01) C01B 33/28 (1985.01)

Patent

CA 1256844

SHOCK CALCINED ALUMINOSILICATE ZEOLITES ABSTRACT OF THE DISCLOSURE A process for producing a thermally shock calcined aluminosilicate zeolite comprising (A) precalcining an aluminosilicate zeolite at a relatively low temperature, (B) very rapidly increasing the temperature of the aluminosilicate zeolite to a relatively high temperature for a short period of time, and (C) rapidly cooling the aluminosilicate zeolite. The resulting zeolite is catalytically active for hydrocarbon conversion reactions and is particularly selective for the production of para-xylene from a reaction mix of toluene and a methylating agent.

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