Production of propylene from ethanol over ZSM-5 co-modified with zirconium and phosphorus

Reaction Kinetics, Mechanisms and Catalysis, June 2013, Volume 109, Issue 1, pp 221-231
Production of propylene from ethanol over ZSM-5 co-modified with zirconium and phosphorus
Zhaoxia Song, Wei Liu, Cheng Chen, Atsushi Takahashi, Tadahiro Fujitani
1. Research Institute for Innovation in Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology (AIST), 16-1, Onogawa, Ibaraki, Tsukuba, 305-8569, Japan
2. College of Life Science, Dalian Nationalities University, Dalian, 116600, China
3. School of Chemical Engineering, Dalian University of Technology (DLUT), Dalian, 116024, China
Abstract
Reports a study of the production of propylene from ethanol over ZSM-5 co-modified with zirconium and phosphorus (P/Zr/ZSM-5). Characterization results revealed that the concentration of strong acid sites on P/Zr/ZSM-5 was significantly reduced by the impregnation of phosphorus into Zr/ZSM-5.
P/Zr/ZSM-5 exhibited a better catalytic performance than H-ZSM-5 and Zr/ZSM-5 in the ethanol-to-propylene reaction. The in situ UV–Vis spectrum of the ethanol adsorbed P/Zr/ZSM-5 revealed that production of the species of non-desorbed aromatics was minimal. Consequently, the formation of carbonaceous deposits was inhibited by the phosphorus modification.
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