项目名称： 熔融盐法制备消除挥发性有机物的氧化铁担载铂纳米催化剂的研究

项目编号： No.U1507108

项目类型： 联合基金项目

立项/批准年度： 2016

项目学科： 数理科学和化学

项目作者： 邓积光

作者单位： 北京工业大学

项目金额： 50万元

中文摘要： 基于控制挥发性有机物（VOC）排放的重大需求，开发盐湖资源高效利用新途径的迫切需要，铁矿的丰富储存量和低毒性，以及熔融盐法环境友好、工艺简单和易于实现工业化生产等优点，我们创新性地提出以锂、钠、钾和镁等无机盐为媒介，采用熔融盐法，原位制备FeOy担载Pt纳米颗粒催化剂。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担载制得的Pt/FeOy纳米催化剂物化性质（例如Pt纳米颗粒的落位、粒径和表面缺陷，FeOy的形貌、晶面和晶相，特别是Pt和FeOy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Pt/FeOy纳米催化剂对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，为盐湖资源高效利用提供新的途径。

中文关键词： 挥发性有机物；催化氧化；氧化铁；Pt纳米粒子；熔融盐

英文摘要： Based on the following reasons: (i) the significant demand of controlling volatile organic compounds (VOC) emissions, (ii) the urgent need of developing the novel pathways for the efficient use of Saline Lake resources, (iii) rich reserves and low toxicity of iron ore, and (iv) molten salt synthesis with the environmentally friendly characteristic, simple process, and the advantage of easy industrial production, we herein take the inorganic salts of lithium, sodium, potassium and magnesium as reaction medium, and try to fabricate FeOy supported Pt nanoparticles catalysts via the in situ molten salt method. We will investigate the effects of preparation conditions (such as the type and composition of molten salt, precursor, molten salt/precursor weight ratio, calcination temperature and keeping time, etc.) on physicochemical properties (the distribution, size and surface defect of Pt nanoparticles, morphology, crystal plane and phase of FeOy, interface matching and interaction of Pt-FeOy) of the Pt/FeOy nanocatalysts. The catalytic performance of Pt/FeOy 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, and a novel pathway for the efficient use of Saline Lake resources.

英文关键词： volatile organic compound;catalytic oxidation;iron oxide;Pt nanoparticle;molten salt