Methane aromatization in the absence of oxygen over extruded and molded MoO_3/ZSM-5 catalysts:Influences of binder and molding method  

作　　者：Dongmei Ren Xiangsheng Wang Gang Li Xiaojing Cheng Huayun Long Lidong Chen 

机构地区：[1]State Key Laboratory of Fine Chemicals, Dalian University of Technology, Department of Catalytical Chemistry and Engineering, Dalian 116012, Liaoning, China [2]Faculty of Chemistry and Chemical Engineering, Bohai University, Jinzhou 121000, Liaoning, China [3]School of Chemistry and Chemical Engineering, Xinjiang University, Urumqi 830046, Xinjiang, China

出　　处：《Journal of Natural Gas Chemistry》2010年第6期646-652,共7页天然气化学杂志（英文版）

基　　金：supported by the National Basic Research Program of China(Grant 2005CB 221405)

摘　　要：The influences of binder and molding method on the catalytic performance of methane aromatization in the absence of O2 over MoO3/ZSM-5 catalysts were investigated.SEM,NH3-TPD,FT-IR of adsorbed pyridine,N2 adsorption-desorption,cyclohexane adsorption and XPS were employed to characterize the physical and chemical properties of the catalysts.It was found that SiO2 was a suitable binder for the catalyst due to its appropriate weak acidity.The laminar catalyst comprising of an inert spherical core and a MoO3/ZSM-5 laminar shell with 0.1 0.2 mm in thickness showed a better catalytic performance than the extruded catalyst.The improved activity of the laminar catalyst could be attributed to the easy carbonization of Mo species and the quick removal of reaction products from the catalyst surface.

关 键 词：methane AROMATIZATION extruded catalyst laminar catalyst ZSM-5 molybdenum 

分 类 号：TQ174.758[化学工程—陶瓷工业] O643.36[化学工程—硅酸盐工业]