Enhancement of molecular sieve performance

Details Enhancement of molecular sieve performance Enhancement of molecular sieve performance

2011-07-05

2011-07-05

Wood, Elizabeth D (Department: 1732)

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

Catalyst or precursor therefor

Phosphorus or compound containing same

C423S700000, C423S701000, C423S702000, C423S703000, C423S704000, C423S705000, C423S706000, C423S709000

Reexamination Certificate

active

07972989

ABSTRACT:
A catalyst for converting methanol to light olefins and the process for making and using the catalyst are disclosed and claimed. SAPO-34 is a specific catalyst that benefits from its preparation in accordance with this invention. A seed material is used in making the catalyst that has a higher content of the EL metal than is found in the principal part of the catalyst. The molecular sieve has predominantly a roughly rectangular parallelepiped morphology crystal structure with a lower fault density and a better selectivity for light olefins.

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