Highly selective synthesis of para-cresol by conversion of anisole on ZSM-5 zeolites

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• 作者：Kunyuan Wang ; Xinglong Dong ; Zhaoan Chen ; Yanli He ; Yunpeng Xu ; Zhongmin Liu
• 关键词：Selective catalysis ; Anisole ; Para-cresol ; Para-selectivity ; ZSM-5
• 刊名：Microporous and Mesoporous Materials
• 出版年：1 February, 2014
• 年：2014
• 卷：185
• 期：Complete
• 页码：61-65
• 全文大小：561 K

文摘

A novel route to obtain the high para-selectivity was developed by conversion of anisole on modified ZSM-5 in a continuous flowing fixed-bed reactor. It showed that the silylation and steaming treatment were significantly benificial to enhance the para-selectivity. Compared with the parent catalysts, the para-selectivity was sharply increased from 18.13% to 69.21% after the second silylation, which was further increased to 80.67% by steaming treatment. The acid sites with different strength of catalysts were studied by NH₃-TPD which had an influence on both the para-selectivity and the amount of aromatics in the products.