Acidity plays a vital role in methane conversion by co-feeding method,which is one of the best strategies to improve the utilization and gentle the reaction conditions of methane.In this work,Zn,Ni,Mo,La,Ga,Fe and Co-impregnated ZSM-5 zeolites have been prepared with the same substitutions to variate the acidities and tested in co-aromatization of methanol with methane.It is demonstrated that the new medium-strong acid sites formed by metal and strong acid sites are the key role to activate methane in co-reaction.Zn-modified ZSM-5 catalyst is preferred to exhibit the best methane conversion of 12％,whose aromatic selectivity increases from 27.2％to 52.2％compared with that of HZSM-5.Besides,the addition of methane further improves the production of high-valued aromatics compared with methanol to aromatics(MTA)reaction.

Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology,College of Chemical and Biological Engineering,Zhejiang University,Hangzhou 310027,P.R.China

[1]YU Yue;XI Zhixiang;ZHOU Bingjie;JIANG Binbo;LIAO Zuwei;YANG Yao;WANG Jingdai;HUANG Zhengliang;SUN Jingyuan;YANG Yongrong-.Acidity Modification of ZSM-5 for Methane Conversion in Co-feeding Method with MTA Reaction)[J].高等学校化学研究（英文版）,2022(04):1012-1017

Acidity,acidities

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