二氧化钛过渡金属掺杂合成高稳定性载体及其对担载型Pd催化剂性能增强机制的研究

项目名称： 二氧化钛过渡金属掺杂合成高稳定性载体及其对担载型Pd催化剂性能增强机制的研究

项目编号： No.21503059

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 分析化学

项目作者： 曲微丽

作者单位： 哈尔滨师范大学

项目金额： 22万元

中文摘要： 燃料电池是一种高效、便捷、环境友好的绿色清洁能源，具有广阔的应用前景，然而要实现其商品化，还面临着成本、寿命等问题，研制出高效廉价的催化剂材料是关系到燃料电池真正迈向商业化的关键。本项目以提高Pd催化剂稳定性与活性为导向，拟设计以TiO2为宿主材料，通过掺杂变价性强的过渡金属，提高TiO2载体的导电性，制备新型的TixMyO2催化剂载体，并与碳和碳纳米管混合，使载体抗腐蚀性能和导电性能得到增强，制备高稳定高活性的Pd催化剂，研究其对甲酸电催化氧化反应的性能，探究过渡金属掺杂的TiO2载体对催化剂性能的影响。并且结合量子化学计算，揭示过渡金属掺杂的TiO2对催化剂性能提高机制。本项目的实施将有助于促进催化剂发展过程中理论与实践相结合，为高活性、高稳定性的燃料电池催化剂的设计、研发提供理论依据。

中文关键词： 二氧化钛；过渡金属；载体；钯催化剂；直接甲酸燃料电池

英文摘要： The fuel cell is an efficient, convenient, environmentally friendly green clean energy，has a broad application prospects. However, we face the bottleneck problems of high-cost, short-life for achieving its commercialization. It is the key for real commercialization of fuel cell to develop a cheap and efficient catalyst material.The purpose of this project is to enchance the stability and activity of Pd catalyst. The project plans to use TiO2 as the host materials,and the transition metals will be doped , and embedded TiO2 lattice that can improve the conductivity of TiO2 support. The novel TixMyO2 catalyst supports will be prepared .TixMyO2 is mixed with carbon and carbon nanotubes, which makes corrosion resistance and electric conductivity of the support enhanced.Then high stable and highly active Pd catalysts will be synthetized . The performance of the catalysts for formic acid electrooxidation reaction will be researched. The transition metal-doped TiO2 support on the catalytic performance will be studied. Finally, the quantum mechanics calculation will be employed to theoretically study effect mechanism of transition metal-doped TiO2 support on enhanced catalyst performance. The implementation of this project will help to promote the combination of theory and practice in the catalyst development process, and provide a theoretical basis for design, development, and application of the high activity, high stability fuel cell catalyst.

英文关键词： titanium dioxide;transition metal;support;Pd catalyst;direct formic acid fuel cell