Patent ID: 6652832
Filing Date: 2003-11-25
Classification: B01J,C01B,C07C,Y10S

Abstract:
A process for synthesizing the crystalline material ZSM-12 which comprises the steps of:(i) preparing a mixture capable of forming said material, said mixture comprising sources of alkali or alkaline earth metal (M), an oxide of trivalent element (X), an oxide of tetravalent element (Y), hydroxyl (OHâˆ’) ions, water and N,N-dimethylhexamethyleneimine cations (R), wherein said mixture has a composition, in terms of mole ratios, within the following ranges: YO2/X2O3 =at least 30H2O/YO2 =â€‚â€‰30-70OHâˆ’/YO2 =0.15-0.45M/YO2 =0.15-0.45R/YO2 =0.20-0.55,(ii) maintaining said mixture under sufficient conditions until crystals of said material are formed; and (iii) recovering said crystalline material from step (ii).