Patent ID: 6616911
Filing Date: 2003-09-09
Classification: B01D,B01J,C01B,C07C,C10G,Y02P,Y10S

Abstract:
A process for preparing a medium pore size zeolite which comprises:(a) preparing an aqueous solution from (1) sources of an alkali metal oxide, alkaline earth metal oxide or mixtures thereof; (2) sources of an oxide selected from the oxides of aluminum, iron, gallium, indium, titanium, vanadium or mixtures thereof; (3) sources of an oxide selected from oxides of silicon, germanium or mixtures thereof; and (4) at least one pyrrolidinium cation capable of forming the zeolite and having the following formula: â€ƒwhere R1 is C1-C4 alkyl or benzyl, and R2is C5-C8 cycloalkyl, or alkylated C5-C8 cycloalkyl; (b) maintaining the aqueous solution under conditions sufficient to form crystals of the zeolite; and (c) recovering the crystals of the zeolite.