Structure and reactivity of phosphorous modified H-ZSM-5 catalysts for ethanol dehydration

被引：101
作者：
Ramesh, Kanaparthi [1 ]
Hui, Lau Mei [1 ]
Han, Yi-Fan [1 ]
Borgna, Armando [1 ]
机构：
[1] ICES, Dept Appl Catalysis, Singapore 627833, Singapore
来源：
CATALYSIS COMMUNICATIONS | 2009年 / 10卷 / 05期
关键词：
H(3)PO(4) modified ZSM-5; Ethanol dehydration; Ethylene; Solid-state NMR; ZEOLITE H-ZSM-5; CONVERSION; ETHYLENE; HYDROCARBONS; METHANOL; CRACKING; ACID; NMR;
D O I：
10.1016/j.catcom.2008.10.034
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
H(3)PO(4)/H-ZSM-5 catalysts were prepared by impregnation method with varying H(3)PO(4) loadings from 5 to 20 wt%. The H(3)PO(4) modified catalysts were found to be highly active and selective towards ethylene during ethanol dehydration at 673 K. However, the selectivity was found to strongly depend on the content of H3PO4, reaction temperature and WHSV. The catalysts were characterized using X-ray diffraction, NH(3)-TPD, N(2) physisorption, (27)Al, and (31)P MAS NMR techniques. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：567 / 571
页数：5
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