Diquaternary (CH3)2(C2H5)N+ (CH2)nN+ (C2H5)(CH3)2 and (C2H5)2-(CH3)N+ (CH2)nN+ (CH3)(C2H5)2 ions with n=4-6 as structure-directing agents in zeolite synthesis

Abstract

The use of fexible, linear diquaternary alkylammonium ions (CH3)2(C2H5)N+ (CH2)nN+-(C2H5) (CH3)2 (Me4Et2-diquat-n) and (C2H5)2(CH3)N+ (CH2)nN+(CH3)(C2H5)2 (Et4 Me2-diquat-n) with n=4–6 as structure-directing agents in zeolite syntheses is described. Among the ammonium ions studied here, the Et4Me2-diquat-4 and Et4Me2-diquat-6 ions were found to be new structure-directing agents for the crystallization of MCM-47 SSZ-16, respectively.