Synthesis of ZSM-5 with hierarchical porosity: In-situ conversion of the mesoporous silica-alumina species to hierarchical zeolite

Hierarchical ZSM-5 with large external surface area, secondary pore volume and regular mesopore size distribution was fabricated through the in-situ conversion of the order mesoporous silica-alumina species, exhibiting the excellent performance when LDPE catalytic cracking was used as the probe reaction.491