超临界水氧化技术在杂环类农药废水的无害化处理方面具有光明的应用前景，但是苛刻的反应条件限制了该技术的发展。本项目提出使用Ce-Mn复合氧化物催化剂以降低反应条件。拟针对Ce-Mn复合氧化物在杂环类农药废水超临界水氧化中的催化特性展开研究，内容包括：①以废水中最主要的含碳和含氮有机物作为处理对象，通过产物分析判断催化剂对模型化合物的断键规律及氧化反应的路径；②利用软件模拟与实验验证，建立催化反应的动力学模型，预测中间产物的浓度变化规律；③结合催化剂的表征分析，揭示无机盐及积碳在催化剂表面的产生与存在形态及其对催化剂活性的影响；④通过长周期连续式实验筛选出Ce-Mn复合氧化物催化剂的载体，获得催化剂的活性、稳定性等数据。本项目意在为复合氧化物催化剂的选择拓展新的思路，研究成果对丰富催化剂的催化理论、促进高浓度难降解有机废水的无害化处理具有重要的学术意义和现实意义。

Although supercrtical water oxidation (SCWO) shows a promising prospect for the innocent treatment of heterocyclic pesticides wastewater, strict operation conditions prevent the development of this technology. A Ce-Mn composite oxides catalyst is proposed to decrease reaction conditions and increase the removal rate of pollutants. In this project, we focus on the catalytic mechanism of Ce-Mn composite oxides in supercritical water oxidation of heterocyclic pesticide wastewater. It includes that: ① with the results of products analysis, analyze the influence of catalysts on bond breaking of compounds and the pathways of oxidation reaction in the treatment of typical carbon-containing and nitrogen-containing organics from wastewater; ② on the basis of software simulation and experimental verification, develop a catalytic reaction kinetic model and predict the change rule of the concentration of intermediates; ③ combining the characterization analysis of new and used catalysts, reveal the production and exiting form of salts and carbon deposits on the catalyst surface and its influence on catalyst activity; ④ screen out the catalyst carrier of Ce-Mn composite oxides in supercritical water oxidation of pesticide wastewater and obtain the data on catalyst activity and stability. This project is intended to develop a novel idea for selection of new mixed metal oxides catalysts. The research achievements will be of improtant theoretical value and potential application prospect for the catalytic theory of mixed metal oxides catalysts and innocent treatment of high-concentration refractory wastewater.