化工进展2009，Vol.28Issue(8)：1360-1364,1381,6.
Fe/ZSM-5的制备及其催化甲苯/甲醇烷基化反应行为
Preparation of Fe/ZSM-5 and catalytic behavior for toluene alkylation with methanol
张立东 1高俊华 2胡津仙 1李文怀 2王建国1
作者信息
- 1. 中国科学院山西煤炭化学研究所煤转化国家重点实验室,山西,太原,030001
- 2. 中国科学院研究生院,北京,100049
- 折叠
摘要
Abstract
A series of Fe/ZSM-5 zeolites with different contents of Fe were hydrothermally synthesized by changing the Si/Fe ratio (the same gel of SiO2/Al2O3=100) and their catalytic performance for toluene alkylation with methanol was investigated in a continuous fluid fixed bed reactor at normal atmosphere. The structure, pore properties and acidity of Fe/ZSM-5 zeolites were characterized by X-ray diffraction,electronic paramagnet resonance, low temperature N2 adsorption, NH3-TPD and Py-IR. The results indicate that the partial introduction of Fe atoms into the zeolite frameworks in the synthetic process does not destroy the ZSM-5 framework structure, while it leads to the decrease in crystallization capacity, the change in acidity and the lowering in the acid strength. As a result, the coke formation during the alkylation reaction process is suppressed. Hence, the stability of zeolite and the utilization ratio of methanol are improved.关键词
Fe/ZSM-5/甲苯/甲醇/烷基化/积炭Key words
Fe/ZSM-5/toluene/methanol/alkylation/coke分类
化学化工引用本文复制引用
张立东,高俊华,胡津仙,李文怀,王建国..Fe/ZSM-5的制备及其催化甲苯/甲醇烷基化反应行为[J].化工进展,2009,28(8):1360-1364,1381,6.
