One-pot Synthesis of Phosphorus-modified ZSM-5 Zeolite by Solid-state Method and its MTO Catalytic Performance

Zihan Zhou; Xingwen Wang; Junjie Li; Yu Gao; Rui Yu; Rongli Jiang

doi:10.1002/chem.202203095

One-pot Synthesis of Phosphorus-modified ZSM-5 Zeolite by Solid-state Method and its MTO Catalytic Performance

Chemistry. 2023 Mar 7;29(14):e202203095. doi: 10.1002/chem.202203095. Epub 2023 Feb 8.

Authors

Zihan Zhou¹, Xingwen Wang¹, Junjie Li¹, Yu Gao¹, Rui Yu¹, Rongli Jiang¹

Affiliation

¹ School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou, 221116 (P. R., China.

PMID: 36478597
DOI: 10.1002/chem.202203095

Abstract

The traditional hydrothermal synthesis strategy of ZSM-5 zeolite is energy-consumption accompanying by pollution issues. Herein, phosphorus-modified layered ZSM-5 zeolites (PZ) were obtained by one-pot synthesis under solvent-free conditions. The synthesized samples were fully characterized by XRD, SEM, BET, NH₃ -TPD and FTIR. The effect of phosphorus addition on the morphology and catalytic activity of ZSM-5 was investigated. The results showed that phosphorus-modified ZSM-5 zeolites exhibited higher light olefin (ethylene and propylene) selectivity (above 50 %) and longer catalytic lifetime (33 h) in methanol to olefin (MTO) reaction when the weight hourly space velocity was 4 h^-1 . Phosphorus-modified ZSM-5 zeolite synthesized by in situ solvent-free method, which not only reduced the discharge of sewage but also showed a simple method to realize the introduction of phosphorous species, which provided a new idea for phosphorus modification of ZSM-5 zeolite.

Keywords: ZSM-5; methanol to olefins; one-pot synthesis; phosphorous modification; solid-state method.