Seed crystal/ <scp>MgCl</scp> ₂ ‐assisting synthesis hierarchical zeolite <scp>ZSM</scp> ‐5 in the absence of organic templates

Abstract Hierarchical zeolite ZSM‐5 has attracted enormous attention due to its shape selectivity in catalytic process. However, sustainably obtaining zeolite ZSM‐5 in a completely inorganic synthesis system is still a great challenge. In this study, a facile and inorganic strategy to manipulate the mesopore structure was reported. Taking advantage of grafted Mg species as the source of defect sites, the resultant ZSM‐5 was demonstrated to have a total BET surface area of 363.6 m 2 · g −1 , and a mesoporous surface area of 156.2 m 2 · g −1 . Moreover, the hierarchical material showed much enhanced catalytic cracking activity for heavy oil due to its micro‐mesoporosity structure. This strategy opens a novel way for the green obtaining of zeolites with hierarchical structure.