Ensemble Effects in Catalytic Hydrocarbon Conversion Reactions on Pt(111)

在这个项目中，由分析和表面 化学课程，坎贝尔教授将学习合奏 铂催化的表面反应的影响。 使用 铋原子作为无规、电子中性位点阻断剂 允许测定铂位点的大小 所需的氢化环己烯和 环己烷的脱氢和氢解。 整体 本工作的目标是建立一个逐步的动力学模型， 铂表面的催化反应。 这种 微观信息对于详细的 了解多相催化。 %%% 详细的活性位点的微观了解， 在铂上的烃转化化学的催化作用， 重要的是设计有效的催化剂，用于 炼油工业。 该研究项目使用 铋原子吸附方法来探测活性位点， 模拟铂催化剂上的烃类反应 来理解这种异质性的微观细节 化学.

In this project, supported by the Analytical and Surface Chemistry Program, Professor Campbell will study ensemble effects in surface reactions catalyzed by platinum. The use of bismuth atoms as random, electronically neutral site blockers allows the determination of the size of the platinum site necessary for the hydrogenation of cyclohexene and the dehydrogenation and hydrogenolysis of cyclohexane. The overall goal of this work is to develop a stepwise kinetic model for these catalytic reactions on the platinum surface. This sort of microscopic information is essential to a detailed understanding of heterogeneous catalysis. %%% The detailed microscopic understanding of the active site for catalysis of hydrocarbon conversion chemistry on platinum is important for the design of effective catalysts for use in the petroleum refining industry. This research project uses bismuth atom adsorption methods to probe the active site for hydrocarbon reactions on model platinum catalysts with a view to understanding the microscopic details of this heterogeneous chemistry.