Patent ID: 8057782
Filing Date: 2011-11-15
Classification: C01B

Abstract:
1. A method for preparing a crystalline small pore molecular sieve, said method comprising: a. preparing a reaction mixture comprising dissolving alumina in an aqueous solution containing an active alkali metal source; and combining the solution with (1) at least one active source of an oxide of a tetravalent element or mixture of tetravalent elements, (2) seed crystals capable of forming the small pore molecular sieve, (3) a structure directing agent capable of forming the small pore molecular sieve, and (4) an amount of water that is not substantially in excess of the amount required to cause and maintain crystallization of the small pore molecular sieve; and b. heating said reaction mixture at crystallization conditions for sufficient time to form a crystallized material containing crystals of the small pore molecular sieve, wherein said reaction mixture during crystallization has a water to (1) molar ratio between about 1 and about 5.