氯代挥发性有机物CVOCs催化氧化的研究进展

氯代挥发性有机物(CVOCs)因其性质稳定、反应性差且毒性高,成为目前大气污染物净化技术中的难点。催化氧化法是去除CVOCs最有效的方法之一。对CVOCs催化氧化的研究进行综述,列举实例介绍了各类催化剂对常见CVOCs的催化研究现状,对催化性能、催化剂失活、反应机理等方面进行了详细分析,总结出积碳和氯中毒是催化剂失活的两大主要因素,而载体性质、活性组分分散度、水等对催化性能产生很大影响。最后,展望了未来催化剂的研究重点。

RESEARCH PROGRESS OF CATALYTIC OXIDATION OF CVOCs

Chlorinated volatile organic compounds (CVOCs) are difficult to be removed due to their strong stability,poor reactivity and high toxicity.Catalytic oxidation is one of the most effective methods to remove CVOCs.In this paper,the study of the catalytic oxidation of CVOCs was demonstrated,and the research progress of various catalysts on common CVOCs was introduced.Catalytic performance,catalytic deactivation,reaction mechanism and other aspects were discussed in details.It was concluded that carbon deposition and chlorine poisoning were the two main factors in catalyst deactivation.The carrier properties,active components dispersion and water had great influences on the catalytic performance.Finally,the future research focus of catalyst was prospected.