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Vol. 27 No. 1 (2015): Vol 27 Issue 1

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Phosphorus and Boron Co-Modified HZSM-5 Catalyst for Methanol to Conversion of Propylene

https://doi.org/10.14233/ajchem.2015.17624
Aina Xu
School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, P.R. China
Hongfang Ma
School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, P.R. China
Haitao Zhang
School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, P.R. China
Weiyong Ying
School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, P.R. China
Dingye Fang
School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, P.R. China

Corresponding Author(s) : Weiyong Ying

wying@ecust.edu.cn

Asian Journal of Chemistry, Vol. 27 No. 1 (2015): Vol 27 Issue 1

Abstract

PB-HZSM-5 zeolite was prepared by B-ZSM-5 direct synthesis followed by phosphorus impregnation. The structure and properties of PB-HZSM-5 were characterized by XRD, N2 adsorption, solid state NMR NH3-TPD, XRF, ICP-AES, TGA and Py-IR. After modification, the weak acidity on the catalyst increased obviously while the strong acidity decreased to a certain level. In comparison with the conventional HZSM-5, the PB-HZSM-5 catalyst expressed a much higher propylene selectivity and longer catalyst life in the conversion of methanol to propylene reaction. The improved catalyst performance could mostly be attributed to the change in the zeolite structure and the acid sites.

Keywords

HZSM-5 Methanol Boron Phosphorus Methanol to propylene
Xu, A., Ma, H., Zhang, H., Ying, W., & Fang, D. (2014). Phosphorus and Boron Co-Modified HZSM-5 Catalyst for Methanol to Conversion of Propylene. Asian Journal of Chemistry, 27(1), 301–306. https://doi.org/10.14233/ajchem.2015.17624
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