Seed crystal/MgCl₂‐assisting synthesis hierarchical zeolite ZSM‐5 in the absence of organic templates

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.