Hierarchically Structured Monolithic ZSM-5 through Macroporous Silica Gel Zeolitization

摘要

The hierarchically structured ZSM-5 monolith was prepared through transforming the skeletons of the macroporous silica gel into ZSM-5 by the steam-assisted conversion method.The morphology and monolithic shapes of macroporous silica gel were well preserved.The hierarchically structured ZSM-5 monolith exhibited the hierarchical porosity,with mesopores and macropores existing inside the macroporous silica gel,and micropores formed by the ZSM-5.The products have been characterized properly by using the XRD,SEM and N_2 adsorption-desorption methods.