Enhanced Methanol Oxidation on Platinum Single Crystal Electrodes Studied by UHV Spectroscopies, Electrochemistry and Isotope Methods

通过特高压光谱、电化学和同位素方法研究铂单晶电极上的增强甲醇氧化

• 批准号: 9411184
• 负责人: Andrzej Wieckowski
• 金额: $ 30.1万
• 依托单位: University of Illinois at Urbana-Champaign
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-07-01 至 1997-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9411184&HistoricalAwards=false
• 关键词: Enhanced; Methanol; Oxidation; Platinum; Single

Understanding the mechanism of the electrocatalytic oxidation of methanol on platinum electrodes is important to the development of improved methanol oxidation catalysts for use in fuel cells. In this research project, supported by the Analytical and Surface Chemistry Program, submonolayer amounts of ruthenium deposited on a platinum electrode have been found to significantly enhance the rate of electrocatalytic methanol oxidation. A combination of ultra high vacuum electron spectroscopic methods and radio-labelling techniques will be used to investigate the role of the structure of these ruthenium deposits in the methanol oxidation catalysis. A basic understanding of the mechanism of this important catalytic system is likely to result from this work. The correlation between the structure of submonolayer ruthenium deposits on platinum electrodes, and their activity for the electrocatalytic oxidation of methanol will be explored in this research project. Structures and compositions of these submonolayer deposits will be obtained by electron spectroscopic and radiochemical methods. A more detailed understanding of this technologically important catalytic reaction should ensue.

对甲醇电催化氧化机理的认识 在铂电极上的应用对于开发改进的 用于燃料电池的甲醇氧化催化剂。 本研究 该项目由分析和表面化学计划支持， 沉积在铂电极上的亚单层量的钌具有 已被发现显着提高电催化甲醇的速率 氧化 超高真空电子能谱 方法和放射性标记技术将用于调查 这些钌沉积物的结构在甲醇中的作用 氧化催化。 对这一机制的基本了解 从这项工作中可能产生重要催化体系。 亚单层钌沉积层的结构之间的相关性 在铂电极上，和它们的电催化活性 本研究将探讨甲醇的氧化。 这些亚单层沉积物的结构和组成将被 通过电子光谱和放射化学方法获得。 一个更 详细了解这种技术上重要的催化剂 反应应该随之而来。