CuO-SiO_(2)@CeO_(2)核壳结构催化剂及其催化CO氧化性能  

Core Shell CuO-SiO_(2)@CeO_(2) Catalyst and Its Catalytic Performance for CO Oxidation

作　　者：徐洁书 陶艳琪 吴炳智 王琪 XU Jie-shu;TAO Yan-qi;WU Bing-zhi;WANG Qi(Tongling Nonferrous Tongguan Metallurgy-Chemical Industry Subcompany,Tongling 244000,China;School of Chemistry and Chemical Engineering,Hefei University of Technology,Hefei 230009,China)

机构地区：[1]铜陵有色金属集团股份有限公司铜冠冶化分公司,安徽铜陵244000 [2]合肥工业大学化学与化工学院,安徽合肥230009

出　　处：《安徽化工》2021年第1期43-45,48,共4页Anhui Chemical Industry

摘　　要：通过水热晶化法制备了核壳结构SiO2@CeO2载体,通过浸渍沉淀法负载铜获得CuO-SiO2@CeO2催化剂。考查其催化氧化CO性能,采用TEM、SEM、XRD、H2-TPR对催化剂进行了表征。结果表明,结晶的CeO2有利于CO氧化。1%CuO-CeO2@SiO2催化剂表面铜物种更分散,体现出最好的CO氧化能力,其T90低至135℃。The core-shell structure SiO2@CeO2 carrier was prepared by hydrothermal crystallization method. CuOSiO2@CeO2 catalyst was obtained with the copper loaded by impregnation precipitation method. The catalytic performance for CO oxidation was investigated. The catalyst was characterized by TEM, SEM, XRD and H2-TPR. The results show that crystalline CeO2 is beneficial to the oxidation of CO. The copper species are more dispersed on the surface of 1% CuO-CeO2@SiO2 catalyst, which shows the best CO oxidation ability. Its T90 is as low as 135℃.

关 键 词：铜 铈 二氧化硅 催化剂 一氧化碳 氧化 

分 类 号：TQ426.65[化学工程]