Ethylene production via ethanol dehydration over desilicated ZSM-5 catalyst

Bui Tan Loc; Le Nguyen Quang Tu; Nguyen Quang Long

doi:10.51316/jca.2021.072

Authors

Bui Tan Loc Faculty of Chemical Engineering, Ho Chi Minh City University of Technology (HCMUT), Ho Chi Minh City, Vietnam
Le Nguyen Quang Tu Faculty of Chemical Engineering, Ho Chi Minh City University of Technology (HCMUT), Ho Chi Minh City, Vietnam
Nguyen Quang Long Faculty of Chemical Engineering, Ho Chi Minh City University of Technology (HCMUT), Ho Chi Minh City, Vietnam. Vietnam National University, Ho Chi Minh City, Vietnam

DOI:

https://doi.org/10.51316/jca.2021.072

Keywords:

Mesoporous zeolite, MFI zeolite, dehydration reaction, ethylene

Abstract

The catalytic dehydration of ethanol is a potential alternative route to synthesize ethylene apart from the traditional method which depends on fossil fuels. This report successfully prepared modified ZSM-5 with mesopores using desilication methods to enhance ethanol catalytic dehydration performance and ethylene production at lower temperature. The modified zeolite have the external surface area increased by 3.5 times and a higher dehydration efficiency compared with the original sample especially at temperatures below 220°C. Increasing reaction temperatures and gas houly space velocity (GHSV) increased the dehydration efficiency while increasing the inlet ethanol concentration had opposite effect. Significantly, the ethanol conversion over modified zeolite remained above 90 % when the GHSV increased to 36000 h^‑1 after the time-on-stream of 24 h.

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