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

Pt(111)催化烃转化反应中的系综效应

• 批准号: 9212379
• 负责人: Charles Campbell
• 金额: $ 10万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-07-15 至 1994-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9212379&HistoricalAwards=false
• 关键词: Ensemble; Effects; Catalytic; Hydrocarbon; Conversion

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.

在这个项目中，在分析和表面化学计划的支持下，坎贝尔教授将研究铂催化表面反应中的系综效应。使用铋原子作为随机的电子中性位置阻滞剂，可以确定环己烯加氢以及环己烷脱氢和氢解所需的铂位置的大小。这项工作的总体目标是为铂表面上的这些催化反应建立一个逐步动力学模型。这类微观信息对于详细理解多相催化是必不可少的。对铂上烃类转化化学催化活性中心的详细微观了解对于设计用于炼油工业的有效催化剂是很重要的。本研究项目使用铋原子吸附方法探索模型铂催化剂上烃类反应的活性中心，以期了解这种非均相化学的微观细节。