Nitridation: A simple way to improve the catalytic performance of hierarchical porous ZSM-5 in benzene alkylation with methanol

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• 作者：Jing-Hui Lyu^a ; ^b ; Hua-Lei Hu^a ; Jia-Yao Rui^a ; Qun-Feng Zhang^a ; Jie Cen^a ; Wen-Wen Han^a ; Qing-Tao Wang^a ; Xiao-Kun Chen^a ; Zhi-Yan Pan^b ; Xiao-Nian Li^a ; ^{xnli@zjut.edu.cn}
• 关键词：Nitridation ; Hierarchical porous ZSM-5 ; Benzene alkylation with methanol ; Ethylbenzene
• 刊名：Chinese Chemical Letters
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：28
• 期：2
• 页码：482-486
• 全文大小：1580 K
• 卷排序：28

文摘

Nitrided hierarchical porous ZSM-5 was synthesized by nitridation of hierarchical porous ZSM-5 with flowing ammonia at elevated temperature. The samples were characterized by XRD, SEM, Nitrogen sorption isotherms, NH3-TPD and Py-IR, and evaluated in alkylation of benzene and methanol. The result indicated that the high specific surface area of parent ZSM-5 was maintained, while the Brönsted acidity was effectively adjusted by nitridation. Moreover, the high suppression of ethylbenzene was observed on nitrided catalyst and this could be attributed to the decrease of Brönsted acidity which suppressed the methanol to olefins reactions.