分子筛核壳结构催化剂构建与催化氧化含氯VOCs的抗氯机制研究

Effective control of volatile organic pollutants (VOCs) emitted from petrochemical, pharmaceutical and other industrial processes is one of the important ways to improve the current atmospheric environmental quality. Chlorinated VOCs are highly toxic and can be detained in nature for a long time, which is especially harmful to the environment and human health. Although catalytic combustion has been extensively studied for treatment of Chlorinated VOCs, the industrial application of this technology is currently difficulty by the problems of catalyst chlorine poisoning and secondary pollution. Based on the special features of core-shell structured catalyst, a double interface reaction catalyst is proposed in this project. This double interface reaction catalyst will separate dechlorination process and deep mineralization process during catalytic oxidation of Chlorinated VOCs, which could therefore avoid catalyst deactivation by chlorine poisoning. The project will focus on exploring the catalytic reaction characteristics of Chlorinated VOCs at the core-shell double reaction interface, investigating the shielding effect of chlorine poisoning，providing an important experimental and theoretical basis for the catalysts development and toxic by-products control in Chlorinated VOCs combustion technology. The key problems to be solved include: (1) achieving the fuction of efficient dechlorination,(2) clarifying the reaction process and mechanism of this catalysts.

对石化、制药等工业生产过程中排放的挥发性有机污染物（VOCs）进行有效控制是改善当前大气环境质量的重要途径之一。其中含氯VOCs毒性强，可在自然界中长时间滞留，对环境和人类健康造成的危害尤为严重。催化燃烧法处理含氯VOCs虽然得到了大量研究，但催化剂积氯中毒与二次污染问题极大制约了该技术的工业应用。本项目基于核壳结构催化剂的构建，将含氯VOCs的脱氯与深度氧化在核壳结构的两个反应界面完成，避免了单一反应界面因脱氯不及时导致活性相被氯化以及毒副产物生成的问题。项目将着重探索含氯VOCs在核壳结构双反应界面上的催化反应特征，考察该结构对氯的屏蔽效应，为含氯VOCs催化燃烧技术的催化剂构建与毒副产物控制提供重要的实验依据与理论基础。项目拟解决的关键问题包括:(1)实现核壳结构催化剂的壳层高效脱氯;(2)明晰核壳结构催化剂的反应过程及机理

对石化、制药等工业生产过程中排放的挥发性有机污染物（VOCs）进行有效控制是改善当前大气环境质量的重要途径之一。其中含氯VOCs毒性强，可在自然界中长时间滞留，对环境和人类健康造成的危害尤为严重。催化燃烧法处理含氯VOCs虽然得到了大量研究，但催化剂积氯中毒与二次污染问题极大制约了该技术的工业应用。项目将着重探索含氯VOCs在核壳结构双反应界面上的催化反应特征，考察该结构对氯的屏蔽效应，为含氯VOCs催化燃烧技术的催化剂构建与毒副产物控制提供重要的实验依据与理论基础。