Crystalline intergrowth material of silicoaluminophosphate...

Chemistry of inorganic compounds – Phosphorus or compound thereof – Oxygen containing

Reexamination Certificate

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C423S328100, C423S328200, C423S306000, C423S600000, C502S214000, C502S238000

Reexamination Certificate

active

07914760

ABSTRACT:
A silicoaluminophosphate molecular sieve is disclosed that comprises first and second intergrown phases of a CHA framework type and an AEI framework type, wherein said first intergrown phase has an AEI/CHA ratio of from about 5/95 to about 40/60 as determined by DIFFaX analysis, the second intergrown phase has an AEI/CHA ratio of about 30/70 to about as determined by DIFFaX analysis and said molecular sieve has a silica to alumina molar ratio (Si/Al2) from about 0.13 to about 0.24.

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