Synthesis of hierarchical MFI zeolites with a micro-macroporous core@mesoporous shell structure.


School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, P. R. China. [Email]


Core-shell structured ZSM-5 zeolites (CSSZs) consisting of a micro-macroporous zeolite core and a mesoporous zeolite shell were synthesized by using a bifunctional surfactant containing an alkene group in the hydrophobic tail. The alkene tail and aluminum concentration are the key factors for the formation of the mesoporous shell in CSSZs.