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

表面科学研究对碳氢化合物转化反应催化过程的机理意义

• 批准号: 9819652
• 负责人: Francisco Zaera
• 金额: $ 46.5万
• 依托单位: University of California-Riverside
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-06-01 至 2004-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9819652&HistoricalAwards=false
• 关键词: Mechanistic; Implications; Surface; Science; Studies

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.

该研究项目得到了分析和表面化学计划的支持，将表面科学方法应用于铂和镍表面碳氢化合物反应的详细机制的研究。 加州大学河滨分校的弗朗西斯科扎埃拉教授和他的同事们利用光子和电子诱导的前体分子激发来制备重要的表面中间体。 进行了表面反应的等温动力学研究，工作集中在加氢-脱氢反应中的弱结合中间体的影响。 结构-活性相关性正在研究中，催化这些反应的各种过渡金属之间的行为差异正在研究中。了解铂和镍表面催化碳氢化合物加氢和除氢的详细机理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种有助于为这些反应提供详细的机理信息。 关于表面反应机理和速率的基础知识对于开发新的和更好的催化材料至关重要。