Combining hierarchization and Mg2+ ions insertion in ZSM-5: acidity-modulation effect on MTO reaction

Francesco Dalena,Andreas Puškarić,Ivana Landripet,Tatjana Antonić Jelić,Sanja Bosnar,Glorija Medak,Alessia Marino,Girolamo Giordano,Josip Bronić,Massimo Migliori

Molecular Catalysis（2023）

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摘要

•ZSM-5 zeolites, either after hierarchization, where wet impregnated with Mg2+.•Mg2+ impregnation promoted a “healing” effect of the structure after desilication.•The insertion of metal ions significantly modified the catalyst acid sites distribution, with a decrease of the LAS/BAS ratio.•Mg2+ impregnation suppressed side-reactions, extending lifetime and selectivity toward propylene in MTO.

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关键词

Hierarchical zeolites,Mg insertion in zeolites,Acidity tuning,MTO reaction

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