Metal aluminophosphate catalyst for converting methanol to light

Details Metal aluminophosphate catalyst for converting methanol to light Metal aluminophosphate catalyst for converting methanol to light

1991-11-13

1992-06-30

McFarlane, Anthony

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

Catalyst or precursor therefor

Phosphorus or compound containing same

502208, 502238, 585640, B01J 27182

Patent

active

051263084

ABSTRACT:
This invention relates to an improved process for converting methanol to light olefins and to a catalyst for carrying out the process. The catalyst comprises a metal aluminophosphate molecular sieve having the empirical formula (EL.sub.x Al.sub.y P.sub.z)O.sub.2 where EL is a metal and x, y and z are mole fractions of EL, Al and P respectively. Preferred metals are silicon, magnesium and cobalt, with silicon especially preferred. The molecular sieve catalyst is composed of particles at least 50% of which have a particle size less than 1.0 .mu.m and no more than 10% of the particles have a particle size greater than 2.0 .mu.m. It is also preferred that the metal content (x) be from about 0.005 and 0.05 mole fraction.

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