Synthesis of a crystalline silicoaluminophosphate

Details Synthesis of a crystalline silicoaluminophosphate Synthesis of a crystalline silicoaluminophosphate

1988-02-12

1990-07-24

Stoll, Robert L.

Chemistry of inorganic compounds

Silicon or compound thereof

Oxygen containing

423306, C01B 3326

Patent

active

049434241

ABSTRACT:
A silicoaluminophosphate molecular sieve is disclosed and is characterized in that the P.sub.2 O.sub.5 to alumina mole ratio at the surface is about 0.80 or less, the P.sub.2 O.sub.5 to alumina mole ratio of the bulk is 0.96 or greater and the silicon content at the surface is greater than that of the bulk.

REFERENCES:
patent: 4394362 (1983-07-01), Miller
patent: 4440871 (1984-03-01), Lok et al.

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