Patent ID: 8048402
Filing Date: 2011-11-01
Classification: B01J,C01B,C10G,Y02P

Abstract:
1. A method of synthesizing a crystalline aluminophosphate or silicoaluminophosphate molecular sieve having a CHA framework-type, the method comprising: a) providing a synthesis mixture comprising a source of aluminum, a source of phosphorus, optionally a source of silicon and at least one organic template, and seeds comprising a crystalline material having a CHA framework-type, wherein the at least one organic template is selected from salts of trimethylcyclohexylammonium, phenyltrimethylammonium, and mixtures thereof; and b) inducing crystallization of the synthesis mixture to form a crystalline molecular sieve having a CHA framework type and a Si/Al ratio of less than 0.167; and