Catalytic dehydration of ethanol to ethylene over steam-treated ZSM-5 zeolites

Qiyan Meng; Hongchuan Xin; Yufei Zhang; Yan Huang; Xianfeng Yi; Yuanyuan Sun; Shifa Zhong; Xuebing Li

doi:10.1166/sam.2015.2388

Catalytic dehydration of ethanol to ethylene over steam-treated ZSM-5 zeolites

Qiyan Meng
, Hongchuan Xin^*
, Yufei Zhang
, Yan Huang
, Xianfeng Yi
, Yuanyuan Sun
, Shifa Zhong
, Xuebing Li

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

The steam-treated ZSM-5 zeolites are characterized by XRD, N₂ sorption, SEM, ²⁷Al MAS NMR and NH₃-TPD techniques. The steaming procedures do not alter textural structures, but generate significant variations in the acidity. The catalytic properties of steam-treated ZSM-5 catalysts in dehydration of ethanol into ethylene are investigated in a fixed bed reactor at 150-350 °C and an atmospheric pressure. The decreased total acid sites and increased ratio of weak acid to strong acid after steam treatment may suppress ethylene from secondary reactions, and therefore lead to improved ethylene selectivity at higher temperature. Compared to parent ZSM-5, ZSM-5 treated at 600 °C (ZSM-600) shows excellent stability for ethylene production. The reaction conditions (space velocity and ethanol partial pressure) have significant influences on ethanol conversion and ethylene selectivity.

Original language	English
Pages (from-to)	2343-2351
Number of pages	9
Journal	Science of Advanced Materials
Volume	7
Issue number	11
DOIs	https://doi.org/10.1166/sam.2015.2388
State	Published - 2015
Externally published	Yes

Keywords

Acidity
Ethanol dehydration
Ethylene
Steam treatment
ZSM-5

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10.1166/sam.2015.2388

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title = "Catalytic dehydration of ethanol to ethylene over steam-treated ZSM-5 zeolites",

abstract = "The steam-treated ZSM-5 zeolites are characterized by XRD, N2 sorption, SEM, 27Al MAS NMR and NH3-TPD techniques. The steaming procedures do not alter textural structures, but generate significant variations in the acidity. The catalytic properties of steam-treated ZSM-5 catalysts in dehydration of ethanol into ethylene are investigated in a fixed bed reactor at 150-350 °C and an atmospheric pressure. The decreased total acid sites and increased ratio of weak acid to strong acid after steam treatment may suppress ethylene from secondary reactions, and therefore lead to improved ethylene selectivity at higher temperature. Compared to parent ZSM-5, ZSM-5 treated at 600 °C (ZSM-600) shows excellent stability for ethylene production. The reaction conditions (space velocity and ethanol partial pressure) have significant influences on ethanol conversion and ethylene selectivity.",

keywords = "Acidity, Ethanol dehydration, Ethylene, Steam treatment, ZSM-5",

author = "Qiyan Meng and Hongchuan Xin and Yufei Zhang and Yan Huang and Xianfeng Yi and Yuanyuan Sun and Shifa Zhong and Xuebing Li",

note = "Publisher Copyright: {\textcopyright} 2015 by American Scientific Publishers.",

year = "2015",

doi = "10.1166/sam.2015.2388",

language = "英语",

volume = "7",

pages = "2343--2351",

journal = "Science of Advanced Materials",

issn = "1947-2935",

publisher = "American Scientific Publishers",

number = "11",

}

TY - JOUR

T1 - Catalytic dehydration of ethanol to ethylene over steam-treated ZSM-5 zeolites

AU - Meng, Qiyan

AU - Xin, Hongchuan

AU - Zhang, Yufei

AU - Huang, Yan

AU - Yi, Xianfeng

AU - Sun, Yuanyuan

AU - Zhong, Shifa

AU - Li, Xuebing

PY - 2015

Y1 - 2015

N2 - The steam-treated ZSM-5 zeolites are characterized by XRD, N2 sorption, SEM, 27Al MAS NMR and NH3-TPD techniques. The steaming procedures do not alter textural structures, but generate significant variations in the acidity. The catalytic properties of steam-treated ZSM-5 catalysts in dehydration of ethanol into ethylene are investigated in a fixed bed reactor at 150-350 °C and an atmospheric pressure. The decreased total acid sites and increased ratio of weak acid to strong acid after steam treatment may suppress ethylene from secondary reactions, and therefore lead to improved ethylene selectivity at higher temperature. Compared to parent ZSM-5, ZSM-5 treated at 600 °C (ZSM-600) shows excellent stability for ethylene production. The reaction conditions (space velocity and ethanol partial pressure) have significant influences on ethanol conversion and ethylene selectivity.

AB - The steam-treated ZSM-5 zeolites are characterized by XRD, N2 sorption, SEM, 27Al MAS NMR and NH3-TPD techniques. The steaming procedures do not alter textural structures, but generate significant variations in the acidity. The catalytic properties of steam-treated ZSM-5 catalysts in dehydration of ethanol into ethylene are investigated in a fixed bed reactor at 150-350 °C and an atmospheric pressure. The decreased total acid sites and increased ratio of weak acid to strong acid after steam treatment may suppress ethylene from secondary reactions, and therefore lead to improved ethylene selectivity at higher temperature. Compared to parent ZSM-5, ZSM-5 treated at 600 °C (ZSM-600) shows excellent stability for ethylene production. The reaction conditions (space velocity and ethanol partial pressure) have significant influences on ethanol conversion and ethylene selectivity.

KW - Acidity

KW - Ethanol dehydration

KW - Ethylene

KW - Steam treatment

KW - ZSM-5

UR - https://www.scopus.com/pages/publications/84947340841

U2 - 10.1166/sam.2015.2388

DO - 10.1166/sam.2015.2388

M3 - 文章

AN - SCOPUS:84947340841

SN - 1947-2935

VL - 7

SP - 2343

EP - 2351

JO - Science of Advanced Materials

JF - Science of Advanced Materials

IS - 11

ER -

Catalytic dehydration of ethanol to ethylene over steam-treated ZSM-5 zeolites

Abstract

Keywords

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