金属氧化物低温催化氧化VOCs的研究进展  

Research progress of low temperature catalytic oxidation of VOCs by metal oxides

作　　者：王科菊 赵成 胡晓玫 云军阁 魏凝涵 姜雪迎 邹昀[1] 陈志航 WANG Keju;ZHAO Cheng;HU Xiaomei;YUN Junge;WEI Ninghan;JIANG Xueying;ZOU Yun;CHEN Zhihang(College of Chemistry and Chemical Engineering,Guangxi University,Nanning 530004,Guangxi,China;Guangdong Province Engineering Laboratory for Air Pollution Control,Guangdong Key Lab of Water&Air Pollution Control,South China Institute of Environmental Sciences,Ministry of Ecology and Environment,Guangzhou 510655,Guangdong,China;College of Resources and Environment,Xiangtan University,Xiangtan 411105,Hunan,China)

机构地区：[1]广西大学化学化工学院,广西南宁530004 [2]生态环境部华南环境科学研究所,广东省水与大气污染防治重点实验室,广东省大气污染控制工程实验室,广东广州510655 [3]湘潭大学资源与环境学院,湖南湘潭411105

出　　处：《化工进展》2023年第5期2402-2412,共11页Chemical Industry and Engineering Progress

基　　金：国家自然科学基金(21978174);广州市科技计划(201904020038)。

摘　　要：一直以来,开发强氧化活性和高抗性的金属氧化物催化剂都是催化脱除挥发性有机化合物(VOCs)领域的研究热点。本文从氧空位、活性氧物种、结构和晶面等角度,比较分析了催化剂的组成比例、形貌、焙烧温度、制备方法和载体等制备因素对增强催化氧化VOCs活性和二氧化碳选择性的影响。阐述了实际工况中的水蒸气、氮氧化物和二氧化硫在氧化反应过程中的中毒机制。展望了利用DFT计算,深入探索氧空位、晶格氧和表面吸附氧在VOCs催化氧化过程中的作用机理,并从活性组分分散度、高活性晶面占比、氧空位强度等关键方面来指导优化催化剂,为相关催化体系的研发提供了科学参考。Metal oxide catalysts with strong oxidation activity and high resistance are hot research topics in catalytic removal of volatile organic compounds(VOCs).In this paper,the effects of preparation factors such as composition ratio,morphology,calcination temperature,preparation method and carrier on catalytic VOCs oxidation activity and carbon dioxide selectivity was compared and analyzed from the perspectives of oxygen vacancies,active oxygen species,structure and crystalline surface.The poisoning mechanism of water vapor,nitrogen oxides and sulfur dioxide during the oxidation reactions in the actual working conditions was elaborated.The action mechanism of oxygen vacancies,lattice oxygen and surface adsorbed oxygen explored in depth by DFT calculations was prospected,and some key factors such as active component dispersion,high active crystalline surface ratio and oxygen vacancy strength can be considered in the optimization of catalysts.This review has provided scientific reference for the research and development of related catalytic systems.

关 键 词：活性 抗性 金属氧化物 挥发性有机化合物 催化氧化 二氧化碳 选择性 

分 类 号：X511[环境科学与工程—环境工程]