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Effect of Mo loading on 2-naphthaldehyde formation from vapor phase oxidation of 2-methylnaphthalene with V2O5/TiO2 catalysts
Catalysis Communications ( IF 3.7 ) Pub Date : 2018-12-29 , DOI: 10.1016/j.catcom.2018.12.019
Xiaoqiang Gao , Fang Zhang , Yi Yu , Yonghui Dou , Li Xu , Guoji Liu

Mo-modified V2O5/TiO2 catalysts were prepared by wetness impregnation method and investigated for the selective oxidation of 2-methylnaphthalene to 2-naphthaldehyde. The catalysts were characterized by XRD, BET, XPS, and Raman to investigate the promotional effect of Mo on catalyst structure, surface property, and catalytic performance. The introduction of molybdenum decreases the amount of KVO3 phase and enhances the dispersion of the vanadium phase. XPS and Raman results indicate that Mo prevents Sn and K to interact with V species and bonds with Ti or V through bridge oxygen. V1Mo1 sample demonstrates a remarkable improvement in conversion and selectivity compared with others.



中文翻译:

Mo负载对V 2 O 5 / TiO 2催化2-甲基萘气相氧化生成2-萘醛的影响

采用湿法浸渍法制备了Mo改性的V 2 O 5 / TiO 2催化剂,研究了该催化剂对2-甲基萘选择性氧化为2-萘醛的作用。通过XRD,BET,XPS和Raman对催化剂进行了表征,以研究Mo对催化剂结构,表面性质和催化性能的促进作用。钼的引入减少了KVO 3相的量并增强了钒相的分散性。XPS和拉曼结果表明,Mo阻止Sn和K与V物种相互作用,并通过桥氧与Ti或V键合。与其他样品相比,V1Mo1样品显示出转化率和选择性的显着提高。

更新日期:2018-12-29
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