Characterization of the Thermal Chemistry of Hydrogen Intermediates on Transition Metal Surfaces

这个研究项目，支持在分析和表面 化学程序，探讨了详细的动力学 烃物种在充分表征的过渡金属上 表面。 这项工作的重点是制定方法， 在表面清洁地制备烃类中间体， 使用低能离子源，提高灵敏度， 监测这些系统中的表面动力学， 仔细的等温动力学测量的反应， 这些被吸附的中间体。 待探索的化学物质 包括中间体的分离和反应， 铂、铜和镍上的亚烷基、乙烯基和烯丙基 表面。 %%% 了解详细的化学成分， 当碳氢化合物分子与 过渡金属表面对于理解 多相催化 该研究项目开发 确定和详细说明可持续发展的方法和途径 吸附的烃中间体的动力学 催化重要的金属如铂、镍和铜。 从这些研究中获得的动力学信息将是 有助于我们了解反应性， 过渡金属催化剂的选择性。

This research project, supported in the Analytical and Surface Chemistry Program, explores the detailed kinetics of hydrocarbon species on well characterized transition metal surfaces. The work focusses on the development of methods for preparing hydrocarbon intermediates cleanly on the surface using a low energy ion source, on improving the sensitivity for monitoring surface kinetics in these systems, and on carrying out careful isothermal kinetic measurements of the reactions of these adsorbed intermediates. The chemistry to be explored includes the isolation and reaction of intermediates such as alklyidene, vinyl, and allyl on platinum, copper and nickel surfaces. %%% The understanding of the detailed chemistry of the intermediates produced when hydrocarbon molecules interact with transition metal surfaces is important for understanding heterogeneous catalysis. This research project develops methods and approaches for identifying and detailing the kinetics of adsorbed hydrocarbon intermediates on such catalytically important metals as platinum, nickel and copper. The kinetic information obtained from these studies will be useful for our developing understanding of the reactivity and selectivity of transition metal catalysts.