Morphology and activity relationships of macroporous CuO-ZnO-ZrO_2 catalysts for methanol synthesis from CO_2 hydrogenation

作     者：Yu-Hao Wang Wen-Gui Gao Hua Wang Yan-E Zheng Kong-Zhai Li Ru-Gui Ma 

作者机构：State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization EngineeringFaculty of Metallurgy and Energy EngineeringKunming University of Science and Technology 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2016年第35卷第10期

页      面：790-796页

核心收录：

学科分类：081702[工学-化学工艺] 081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 0806[工学-冶金工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

基　　金：financially supported by the National Key Technologies Research & Development Program of China(No.2011BAC01B03) the National Natural Science Foundation of China(No.51304099) the Applied Basic Research Program of Yunnan Province(No.2013FZ035) the Testing and Analyzing Foundation of Kunming University of Science and Technology(No. 2010213) 

主　　题：Macroporous structure CuO-ZnO-ZrO2 catalysts CO2 hydrogenation Methanol Activity 

摘      要：A series of macroporous CuO-ZnO-ZrO2 （CZZ） catalysts with different Zn/Zr ratios were successfully prepared by template method and characterized by X-ray diffraction （XRD）, N2 adsorption, reactive N2O adsorption, scanning electron microscopy （SEM）, H2 temperature-pro- grammed reduction （H2-TPR）, and transmission electron microscopy （TEM）. The activity of the catalysts was tested for methanol synthesis from CO2 hydrogenation. It is found that the increase in the Zn/Zr ratio could lead to the sintering of the catalysts, destroying the macroporous structure integrity. The macroporous CZZ catalysts own lower Zn/Zr ratio, exhibiting a better morphology and activity. For comparison, the conventional nonporous CZZ catalysts were also investigated. The results show that the CZZ catalysts with macroporous structure own smaller particles, higher CO2 conversion, and CH3OH yield. It reveals that the macroporous structure could inhibit the growth of the par- ticle size, and the special porous structure is favorable for diffusion and penetration of CO2, which could improve the catalytic activities.