Sapo catalysts and use thereof in methanol conversion processes

Details Sapo catalysts and use thereof in methanol conversion processes Sapo catalysts and use thereof in methanol conversion processes

1991-12-23

1993-09-28

Dees, Carl F.

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

Catalyst or precursor therefor

Phosphorus or compound containing same

B01J 2904, B01J 27182

Patent

active

052486478

ABSTRACT:
Hydrothermal treatment of silicoaluminophosphate molecular sieves at temperatures in excess of about 700.degree. C. for periods sufficient to destroy a large proportion of their acid sites while retaining at least 80 percent of their crystallinity is found to result in a catalyst for converting methanol to lower olefins having increased catalyst life, increased selectivity for C.sub.2 -C.sub.3 olefins and decreased selectivity for paraffin production than the untreated SAPO-n starting composition.

REFERENCES:
patent: 4681864 (1987-07-01), Edwards et al.
patent: 4803185 (1989-02-01), Miller et al.
patent: 4814316 (1989-03-01), Pellet et al.

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