Two stage process for improving the catalyst life of zeolites in

Details Two stage process for improving the catalyst life of zeolites in Two stage process for improving the catalyst life of zeolites in

1984-07-13

1985-11-19

Dees, Carl F.

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

Zeolite or clay, including gallium analogs

Gallium containing

502 77, 502 85, B01J 2928

Patent

active

045542600

ABSTRACT:
A process for improving the catalyst life of zeolites employed in the conversion of alcohols (e.g. methanol) and/or their ether derivatives (e.g., dimethyl ether) wherein a suitable zeolite is modified in a 2-stage procedure by providing a controlled low amount of a coke precursor deposit on the external surface of the zeolite, and then heating this treated zeolite in an inert gas at specifically controlled temperatures for a minimum time is disclosed. A process of employing this modified zeolite to produce lower olefins is also disclosed.

REFERENCES:
patent: 4477585 (1984-10-01), Kaeding

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