Patent ID: 6835363
Filing Date: 2004-12-28
Classification: B01J,C01B,C07C,C10G,Y02P,Y10S

Abstract:
A process for preparing microporous crystalline silicoaluminophosphate molecular sieves of CHA framework type, the process comprising:(a) providing a reaction mixture comprising a source of alumina, a source of phosphate, a source of silica, hydrogen fluoride and an organic template comprising one or more compounds of formula (I): (CH3)2Nâ€”Râ€”N(CH3)2â€ƒâ€ƒ(I) â€ƒwherein R is an alkyl radical of from 1 to 12 carbon atoms; (b) inducing crystallization of silicoaluminophosphate from the reaction mixture; and (c) recovering silicoaluminophosphate molecular sieve.