CuO+ZnO/CeO_2/Al_2O_3水煤气变换活性及其表面形貌网络特征分析  

Catalytic Activity of Water Gas Shift and Characteristic Analysis of Complex Network from Surface Morphology of CuO+ZnO/CeO_2/Al_2O_3

作　　者：张兆春[1] 张毅超[1] 章启贤[1] 

机构地区：[1]上海大学材料科学与工程学院,上海200072

出　　处：《无机材料学报》2009年第1期182-186,共5页Journal of Inorganic Materials

基　　金：上海市高等学校科学技术发展基金(A10-0110-06-015)

摘　　要：以φ3 mm 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.The supported catalyst of water gas shift reaction （WGSR） at low temperature, CuO ＋ ZnO/ CeO2/Al2O3, was prepared using spherical alumina （Ф3mm） 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/Al2O3, 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.

关 键 词：氧化铜 氧化锌 二氧化铈 三氧化二铝 复杂网络 

分 类 号：O643[理学—物理化学]