熔融盐法制备高效消除挥发性有机物催化剂的研究

项目名称： 熔融盐法制备高效消除挥发性有机物催化剂的研究

项目编号： No.21477005

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 化学工业

项目作者： 邓积光

作者单位： 北京工业大学

项目金额： 85万元

中文摘要： 大部分挥发性有机物（VOC）污染大气环境，危害人身健康。催化氧化法是消除VOC的有效途径之一，高效低廉催化剂的研发是实现该过程的关键。熔融盐法是一种制备纳米材料的新方法，具有环境友好、工艺简单和易于实现工业化生产等优点，但尚未用于制备负载型贵金属催化剂的研究。本课题拟以Ag/MnOy催化剂为研究主体，系统研究熔融盐种类及组成、前驱体、熔融盐与前驱体的质量比、焙烧温度和保温时间等制备条件对原位负载制得的Ag/MnOy催化剂物化性质（例如Ag纳米颗粒的落位、粒径和表面缺陷，MnOy的形貌、晶面和晶相，特别是Ag和MnOy界面匹配和相互作用力）的影响，评价其对VOC氧化的催化性能，揭示构效关系，探明Ag/MnOy对VOC氧化的催化作用机制，建立反应动力学模型。研究结果可为发展高效消除VOC催化剂的熔融盐制备技术奠定扎实的实验和理论基础。

中文关键词： 挥发性有机物；催化氧化；氧化锰；银；熔融盐

英文摘要： Most of volatile organic compounds (VOC) are harmful to the atmosphere and human health. The removal of VOC via heterogeneous catalytic combustion is one of the most effective pathways, and the key issue is the development of highly active and cheap catalysts. Molten salt synthesis is a novel strategy for the preparation of nanomaterials, with the environmentally friendly characteristic, simple process, and the advantage of easy industrial production. However, it is not used for the fabrication of supported noble metal catalysts. In this proposal, we take the Ag/MnOy catalysts as an example, and investigate the effects of preparation conditions (such as the type and composition of molten salt, precursor, molten salt/precursor weight ratio, calcination temperature and time, etc.) on physicochemical properties (the distribution, size and surface defect of Ag nanoparticles, morphology, crystal plane and phase of MnOy, interface matching and interaction of Ag-MnOy) of the Ag/MnOy catalysts. The catalytic performance of Ag/MnOy will be evaluated for the complete oxidation of typical VOC. Based on the results of various characterization, we will elucidate the structure-performance relationship, clarify the involved catalytic mechanisms, and establish the catalytic kinetic models. It is envisioned that the results obtained in the proposed project will provide a useful guidance on molten salt synthesis of highly efficient catalysts for the removal of VOC.

英文关键词： volatile organic compound;catalytic oxidation;manganese oxide;Ag;molten salt