Mechanistic Implications of Surface Science Studies on Hydrocarbon Conversion Reactions to Catalytic Processes

该研究项目由分析和表面化学项目支持，应用表面科学方法研究铂和镍表面碳氢化合物反应的详细机制。加州大学河滨分校的Francisco Zaera教授和他的同事利用前体分子的光子和电子诱导激发来制备重要的表面中间体。对表面反应进行了等温动力学研究，重点研究了弱结合中间体在加氢-脱氢反应中的作用。结构-活性的相关性正在进行，并在催化这些反应的各种过渡金属之间的行为差异进行了检查。了解铂和镍表面催化碳氢化合物加氢和脱氢的详细机制是本研究项目的重点。制备可能参与这些反应的瞬态中间体和弱吸附物质有助于提供这些反应的详细机理信息。关于表面反应机理和速率的基本知识是开发新的和更好的催化材料的核心。

This research project, supported in the Analytical and Surface Chemistry Program, applies surface science methods to the investigation of the detailed mechanisms of hydrocarbon reactions on platinum and nickel surfaces. Professor Francisco Zaera and his coworkers at UC-Riverside use photon and electron induced excitation of precursor molecules to prepare important surface intermediates. Isothermal kinetic studies of surface reactions are carried out, and work is focussed on the effects of weakly bound intermediates in hydrogenation-dehydrogenation reactions. Structure-activity correlations are being made, and differences in behavior between various transition metals that catalyze these reactions are examined. An understanding of the detailed mechanisms of the addition and removal of hydrogen from hydrocarbons catalyzed by platinum and nickel surfaces is the focus of this research project. Preparation of transient intermediates and weakly adsorbed species which may be involved in these reactions helps to provide detailed mechanistic information for these reactions. Fundamental knowledge about surface reaction mechanisms and rates is central to the development of new and better catalytic materials.