一步法制备过渡金属掺杂钴铈催化剂在CO氧化反应中的研究  

Research on Preparation of Transition Metal Doped Cobalt-Cerium Catalyst by One Step Method for CO Oxidation

作　　者：王晶 黄斌艳 罗远来 邓景衡 Wang Jing;Huang Binyan;Luo Yuanlai;Deng Jingheng(College of Life,Hengyang Normal University,Hengyang 421008,China)

机构地区：[1]衡阳师范学院生命科学学院,湖南衡阳421008

出　　处：《广东化工》2022年第24期12-14,17,共4页Guangdong Chemical Industry

基　　金：湖南省自然科学基金资助项目(2019JJ50010);湖南省教育厅资助青年项目(21B0628)。

摘　　要：随着环境污染和资源短缺各种问题的挑战,CO催化氧化技术在多个领域备受关注。与贵金属催化剂相比,过渡金属氧化物或复合过渡金属氧化物因为其成本低廉一直作为CO氧化催化剂研究的焦点。本文采用一步法无溶剂添加的改良尿素燃烧法进行材料制备,探讨不同过渡金属(Fe、Zn、Mn、Cu、Ni)掺杂对CoCe催化剂在CO氧化反应中的影响以及不同掺杂量的影响。结果发现Cu掺杂的复合催化剂CO氧化活性效果最好,Mn次之,最差的是Ni和Zn。不同掺杂量实验中,Cu和Co的最佳掺杂量分别为10%和2%。但是,2%Mn掺杂量的Mn-CoCe催化剂效果比10%Cu掺杂量的Cu-CoCe催化剂效果差。With the challenges of environmental pollution and resource shortage, CO catalytic oxidation technology has attracted much attention in many fields.Compared with precious metal catalysts, transition metal oxides or composite transition metal oxides have been the focus of CO oxidation catalyst because of their low cost. In this paper, a modified urea combustion method, whichis one-stepand solvent-free, was used to prepare the materials. The effects of different transition metals(Fe, Zn, Mn, Cu, Ni) doping on CoCe catalyst for CO oxidation and the effects of different doping amounts were investigated. The results show that theCO oxidation activity of the composite catalyst with the Cu-doped is the best, followed by the Mn-doped. Ni-doped and Zn-doped are the worst. In the experiment of different doping amount, the optimal doping amounts of Cu and Co are 10 % and 2 %, respectively.However, Mn-CoCe catalyst with 2 % Mn doping is less effective than Cu-CoCe catalyst with 10 % Cu doping.

关 键 词：CO氧化 过渡金属 钴 铈 

分 类 号：TQ[化学工程]