Catalysis by Metals: Dynamics, Kinetics, and Mechanistic Studies

本研究的目标是使特高压表面研究和应用化学催化之间的定量联系。 两个相关的研究项目得到了加州大学圣巴巴拉分校温伯格教授实验室分析和表面化学项目的支持。化学吸附过程中的能量转移机制的研究进行使用肖特基势垒传感器。 研究了H、O、H_2、O_2、CO和N_2O在过渡金属表面的化学吸附。 凝聚多层膜对表面反应的影响也被考虑在内。 特别是，可能增强的反应性的烷烃在凝聚的多层膜的存在下检查清洁和钾促进的单晶表面的钌，铱，铂。 这项工作的结果将进一步加深我们对多相催化的详细动力学的理解。对过渡金属表面上烃和小分子反应的催化作用的理解是分析和表面化学计划支持的本研究项目的重点。 UCSB的温伯格教授和同事正在研究化学吸附中的能量转移机制以及凝聚多层对烃分子在表征良好的催化表面上的反应性的影响。 从这项研究中获得的信息将有助于设计改进的多相催化体系。

The goal of this research is to make quantitative connections between UHV surface studies and applied chemical catalysis. Two related research projects are supported by the Analytical and Surface Chemistry Program in the laboratory of Professor Weinberg at the University of California-Santa Barbara. Studies of the mechanism of energy transfer during chemisorption are pursued using Schottky barrier sensors. Chemisorption of H, O, H2, O2, CO and N2O on transition metal surfaces is examined. The influence of condensed multilayers on surface reactions is also being considered. In particular, possible enhanced reactivity of alkanes in the presence of condensed multilayers is examined on clean and potassium promoted single crystal surfaces of ruthenium, iridium, and platinum. The results of this work will further our understanding of the detailed dynamics of heterogeneous catalysis. The understanding of the catalysis of hydrocarbon and small molecule reactions on transition metal surfaces is the focus of this research project supported in the Analytical and Surface Chemistry Program. Professor Weinberg and coworkers at UCSB are investigating the mechanisms of energy transfer in chemisorption and the effect of condensed multilayers on the reactivity of hydrocarbon molecules at well characterized catalytic surfaces. The information from this research will be useful in designing improved systems for heterogeneous catalysis.