STABILIZED APMS-54 COMPOSITION AND ITS PRODUCTION

摘要

Aluminophosphate-based molecular sieve compositions having the crystal structure of AlPO4-54 are stabilized against framework collapse or conversion to other crystal structures by treatment in their hydrated state with boric acid or salts thereof. The stabiized products are characterized, in addition to their essential AlPO4-54 structure, by the presence of at least 6 ppm of extraneous boron.