Atomistic Studies of Reactions on Surfaces

本研究由R.斯坦福大学的Madix在分析和表面化学项目的支持下，研究了反应性吸附层的二维组织对其反应性的影响。 扫描隧道显微镜，再加上振动光谱方法，是用来调查组织之间的连接反应overlayers，和详细的动力学和表面催化反应的选择性。 反应物和反应中间体的空间分布，以及这种分布在时间上的演变，与表面反应的详细宏观动力学。 甲醇在Cu（110）和Ag（110）表面上的氧化是本工作的重点。 本研究的重点是探讨甲酸盐物种在镍表面的自催化分解，并详细了解反应物物种在镍表面的组织与所观察到的表面反应动力学之间的关系。 了解反应物的有序性和动力学之间的联系，有助于深入了解催化材料的功能及其操作的选择性。 这些信息对于理解许多重要的多相催化过程是基本的，具有重要的工业应用。

This research project carried out by Professor R. Madix of Stanford University, and supported in the Analytical and Surface Chemistry Program, addresses the effects of the two dimensional organization of reactive adsorbed layers on their reactivity. Scanning tunneling microscopy, coupled with vibrational spectroscopic methods, is used to investigate the connection between organization in reacting overlayers, and the detailed kinetics and selectivity of the surface catalyzed reaction. The spatial distribution of reactants and reaction intermediates, and the evolution of this distribution in time, is correlated with the detailed macroscopic kinetics of the surface reaction. Methanol oxidation on the Cu(110) and on the Ag(110) surface serves as the focus of this work. Autocatalytic decomposition of formate species on the nickel surface is also examined.A detailed understanding of the relationship between the organization of reactant species on surfaces and the observed kinetics of surface reactions is the focus of this research project. An understanding of the connection between reactant ordering and kinetics promises insights into the function of catalytic materials, and the selectivity of their operation. This information is fundamental to the understanding of a number of important heterogenous catalytic processes, with significant industrial application.