Patent ID: 7754187

Claim:
A method of synthesizing a crystalline material comprising a CHA framework type molecular sieve and having a composition involving the molar relationship: ( n )X 2 O 3 :YO 2 wherein X is a trivalent element; Y is a tetravalent element; and n is from 0 to less than 0.01, the method comprising: (a) preparing a reaction mixture capable of forming the crystalline material, the reaction mixture comprising a source of water, a source of an oxide of a tetravalent element Y and optionally a source of an oxide of a trivalent element X, wherein the reaction mixture is substantially free of fluoride ions added as HF and further comprises an organic directing agent for directing the formation of a CHA framework type molecular sieve and having the formula: [R 1 R 2 R 3 N—R 4 ] + Q − wherein R l and R 2 are joined to form a substituted or unsubstituted five-membered nitrogen-containing heterocyclic ring, and wherein R 3 and R 4 are hydrocarbyl groups joined to form a substituted or unsubstituted six-membered nitrogen-containing heterocyclic ring; and Q − is an anion; (b) maintaining the reaction mixture under conditions sufficient to form crystals of the crystalline material; and (c) recovering the crystalline material from (b).