Chemistry of inorganic compounds – Silicon or compound thereof – Oxygen containing
Patent
1984-12-19
1990-02-06
Doll, John
Chemistry of inorganic compounds
Silicon or compound thereof
Oxygen containing
423305, C01B 3328
Patent
active
048987220
ABSTRACT:
An improved method for synthesis of improved silicoaluminophosphate SAPO-37 is provided. The method comprises (1) preparing a two-phase reaction mixture containing particular components and comprising both a liquid organic phase and a liquid aqueous phase; (2) heating the reaction mixture at a rate of from 5.degree. C. to 200.degree. C. per hour to a temperature of from 80.degree. C. to 200.degree. C.; agitating the reaction mixture in a manner sufficient to intimately admix said liquid organic and aqueous phases with each other; (4) once nucleation of the silicoaluminophosphate occurs, heating the agitated reaction mixture at rate of from 5.degree. C. to 200.degree. C. per hour to a temperature of from 100.degree. C. to 300.degree. C.; (5) maintaining the agitated reaction mixture at a temperature of from 100.degree. C. to 300.degree. C. and a pH of from 2 to 9 until crystals of the desired silicoaluminophosphate are formed; and (6) recovering silicoaluminophosphate material from the reaction mixture.
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Derouane Eric G.
von Ballmoos Roland
Breneman Bruce
Doll John
McKillop Alexander J.
Mobil Oil Corp.
Santini Dennis P.
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