Stabilization of acid catalysts

Details Stabilization of acid catalysts Stabilization of acid catalysts

2005-05-24

2005-05-24

Johnson, Christina (Department: 1725)

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

Catalyst or precursor therefor

Phosphorus or compound containing same

C502S208000

Reexamination Certificate

active

06897180

ABSTRACT:
The invention is directed to a method of stabilizing metalloaluminophosphate molecular sieves and catalysts derived therefrom. In particular, the invention is directed to a method of treating such molecular sieves with chemisorbed ammonia, which may be easily desorbed before or during use and after storage. The invention is also directed to formulating the molecular sieve into a catalyst useful in a process for producing olefin(s), preferably ethylene and/or propylene, from a feedstock, preferably an oxygenate containing feedstock.

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