Stabilized aluminophosphate compositions and process for prepari

Details Stabilized aluminophosphate compositions and process for prepari Stabilized aluminophosphate compositions and process for prepari

1989-04-20

1991-05-07

Sneed, H. M. S.

Chemistry of inorganic compounds

Boron or compound thereof

Oxygen containing

423305, 423306, 423328, 502 85, C01B 3334, C01B 3500

Patent

active

050135350

ABSTRACT:
Aluminophosphate-based molecular sieve compositions having the crystal structure of AlPO.sub.4 -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 AlPO.sub.4 -54 structure, by the presence of at least 6 ppm of extraneous boron.

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patent: 4569833 (1986-02-01), Gortsema et al.
patent: 4684511 (1987-08-01), Gortsema et al.
patent: 4880611 (1989-11-01), von Ballmoos et al.

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