Direct synthetic strategy of mesoporous ZSM-5 zeolites by using conventional block copolymer templates and the improved catalytic properties

Employing conventional block copolymers as scaffold, a direct synthetic route of mesoporous zeolites has been developed with the assistance of post-steaming treatment. Such hierarchical micro/mesostructure demonstrated the greatly enhanced catalytic activity for probe reactions, such as cracking of triisopropylbenzene and esterification reactions involving bulky molecules, because of the increased external surface, and the diminished coke formation by the greatly shortened diffusion length in microporous networks.