浸渍方式对挤条成型Mo/ZSM-5催化剂甲烷无氧芳构化反应性能的影响  

Methane non-oxidative aromatization on extruded Mo/ZSM-5:Influence of inpregnation procedure

作　　者：任冬梅[1] 王笑雪 赵岩[1] 夏云生[1] 包德才[1] 王祥生[2] REN Dong-mei;WANG Xiao-xue;ZHAO Yan;XIA Yun-sheng;BAO De-cai;WANG Xiang-sheng(College of Chemistry and Chemical Engineering,Bohai University,Jinzhou 121013,China;School of Chemical Engineering,Dalian University of Technology,Dalian 116024,China)

机构地区：[1]渤海大学化学化工学院,辽宁锦州121013 [2]大连理工大学化工学院,辽宁大连116024

出　　处：《应用化工》2018年第3期469-473,共5页Applied Chemical Industry

基　　金：国家自然科学基金项目(21676028);渤海大学博士启动基金(BSQD201416;BSQD201417)

摘　　要：以SiO_2为粘结剂,通过不同浸渍方式制备了挤条成型的Mo/ZSM-5催化剂,考察其催化甲烷无氧芳构化的反应性能。采用扫描电镜(SEM)、紫外拉曼光谱(UV-Raman)及程序升温还原法(H_2-TPR)等对催化剂进行了表征。结果表明,碱性浸渍液有利于成型催化剂中Mo物种的分散,促进了Mo物种的还原,芳烃增加约13%,积碳量下降约8%。The extruded Mo/ZSM-5 catalysts with SiO2 with different impregnation procedures were prepared.SEM,UV-Raman and H2-TPR were employed to characterize the catalysts.The methane dehydroaromatization in the absence of oxygen over the catalysts were investigated in a fixed-bed reactor.The results showed that the catalyst prepared with basic impregnation solution possessed the optimal performance among all the catalysts tested.The aromatics selectivity enhanced by about 13%and the coke formation decreased by about 8%.The improved activity of methane dehydroaromatization was attributed to benefited the reduction of Mo6+species in high dispersion.

关 键 词：甲烷 芳构化 ZSM-5分子筛 挤条成型催化剂 浸渍方式 

分 类 号：TQ426[化学工程]