Ag 修饰的氧化锰的简便合成及其在催化臭氧分解中的有效应用。
Facile synthesis of Ag-modified manganese oxide for effective catalytic ozone decomposition.
机构信息
State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing 100029, China; State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100049, China.
出版信息
J Environ Sci (China). 2019 Jun;80:159-168. doi: 10.1016/j.jes.2018.12.008. Epub 2018 Dec 27.
O decomposition catalysts with excellent performance still need to be developed. In this study, Ag-modified manganese oxides (AgMnO) were synthesized by a simple co-precipitation method. The effect of calcination temperature on the activity of MnO and AgMnO catalysts was investigated. The effect of the amount of Ag addition on the activity and structure of the catalysts was further studied by activity testing and characterization by a variety of techniques. The activity of 8%AgMnO for ozone decomposition was significantly enhanced due to the formation of the AgMnO structure, indicating that this phase has excellent performance for ozone decomposition. The weight content of AgMnO in the 8%AgMnO catalyst was only about 33.76%, which further indicates the excellent performance of the AgMnO phase for ozone decomposition. The H temperature programmed reduction (H-TPR) results indicated that the reducibility of the catalysts increased due to the formation of the AgMnO structure. This study provides guidance for a follow-up study on Ag-modified manganese oxide catalysts for ozone decomposition.
仍需要开发具有优异性能的臭氧分解催化剂。在这项研究中，通过简单的共沉淀法合成了银修饰的氧化锰（AgMnO）。考察了煅烧温度对 MnO 和 AgMnO 催化剂活性的影响。通过活性测试和多种技术的表征，进一步研究了 Ag 添加量对催化剂活性和结构的影响。由于 AgMnO 结构的形成，8%AgMnO 对臭氧分解的活性显著增强，表明该相具有优异的臭氧分解性能。8%AgMnO 催化剂中 AgMnO 的重量含量仅约为 33.76%，这进一步表明了 AgMnO 相在臭氧分解方面的优异性能。H 程序升温还原（H-TPR）结果表明，由于 AgMnO 结构的形成，催化剂的还原性增加。这项研究为后续研究用于臭氧分解的银改性氧化锰催化剂提供了指导。
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