Facile preparation of hierarchically porous IM-5 zeolite with enhanced catalytic performance in methane aromatization

A novel hierarchically porous IM-5-H zeolite material was prepared through one-step crystallization route by means of adjusting the synthesis parameters without introducing any secondary template. The hierarchical IM-5-H zeolite is quite different from the conventional IM-5-C in morphology, textural and acidic properties. After loading Mo, the Mo-IM-5-H catalyst exhibits high activity and stability in non-oxidative aromatization of methane, with a methane conversion of 13.1% and aromatics yield of 7.5%, owing to the mesopores in the IM-5-H zeolite crystals. This work provides a simple way to synthesize hierarchical IM-5 zeolite and expands the application of micro-mesoporous composite material in methane dehydroaromatization.