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无机材料学报

无机材料学报

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CuO+ZnO/CeO2/Al2O3水煤气变换活性及其表面形貌网络特征分析

张兆春， 张毅超， 章启贤   

  1. 上海大学材料科学与工程学院，上海 200072
  • 收稿日期:2008-03-13 修回日期:2008-07-03 出版日期:2009-01-20 网络出版日期:2009-01-20

Catalytic Activity of Water Gas Shift and Characteristic Analysis of Complex Network from Surface Morphology of CuO+ZnO/CeO2/Al2O3

ZHANG Zhao-Chun, ZHANG Yi-Chao, ZHANG Qi-Xian   

  1. School of Materials Science and Technology, Shanghai University, Shanghai 200072, China
  • Received:2008-03-13 Revised:2008-07-03 Published:2009-01-20 Online:2009-01-20

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1943

被引次数

1

摘要： 以φ3mm Al2O3作为主载体，采用浸渍与焙烧工艺，制备水煤气低温变换催化剂：CuO+ZnO/CeO2/Al2O3.利用X射线衍射（XRD）、扫描电子显微镜（SEM）、Raman散射光谱分别对催化剂的化学组成、表面形貌以及表面元素键合状态进行表征；对催化剂的水煤气变换反应(WGSR)活性进行测试.在对催化剂表面形貌进行数据挖掘的基础上，利用复杂网络方法对催化剂的表面形貌进行网络建模，并对其网络拓扑参数和同步性进行了计算.计算结果表明，CuO+ZnO/CeO2/Al2O3表面形貌网络度分布具有幂律分布特征；在催化WGSR以后，催化剂表面形貌网络同步性有所增强.

关键词: 氧化铜, 氧化锌, 二氧化铈, 三氧化二铝, 复杂网络

Abstract: The supported catalyst of water gas shift reaction (WGSR) at low temperature, CuO+ZnO/CeO2/ Al2O3, was prepared using spherical alumina (φ3mm) and the incipient wetness technique for impregnation. The X-ray diffraction (XRD), Raman scattering spectroscope and scanning electron microscope (SEM) were employed to characterize the chemical composition, bonded state of surface elements and surface morphology of CuO+ZnO/CeO2/Al2O3. The catalytic activity of CuO+ZnO/CeO2/Al2O3 in WGSR at low temperature was measured. On the basis of the network constructed from the surface morphology of CuO+ZnO/CeO2/Al2O3, the topological structure parameters and network synchronism were calculated. Results of the calculations show that the node connectivity of the surface morphology network follow a power-law distribution, and that the network synchronism is increased after CuO+ZnO/CeO2/Al2O3 catalyzes WGSR at low temperature. 

Key words: CuO, ZnO, CeO2, Al2O3, complex network

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