Catalytic cracking of VGO by hierarchical ZSM-5 zeolite containing mesoporous silica–aluminas using a Curie point pyrolyzer

Hierarchical ZSM-5 containing mesoporous silica–aluminas were prepared by one pot sol–gel method using malic acid. Their properties for the catalytic cracking of vacuum gas oil (VGO) were estimated using a Curie point pyrolyzer, where the novel and very simple estimation method for the catalytic cracking of VGO was proposed. Prepared catalysts showed the higher activity than single ZSM-5. When the content of aluminum species increased in the catalysts, not only the conversion of VGO but also yields of gasoline increased compared with that of single ZSM-5. Prepared catalysts with mesopore formed larger amounts of multi-branched products with high octane numbers.

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► Hierarchical ZSM-5 containing mesoporous silica–aluminas were prepared.
► The pore size of catalysts could be controlled with the amount of malic acid added.
► The catalytic cracking of VGO was estimated using a Curie point pyrolyzer.
► ZSM-5 containing catalysts showed the higher activity than single ZSM-5.
► ZSM-5 containing catalysts formed larger amounts of multi-branched products.