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.

了解甲醇在铂电极上的电催化氧化的机理对于改善甲醇氧化催化剂以用于燃料电池的发展至关重要。 在该研究项目的支持下，在分析和表面化学计划的支持下，已经发现沉积在铂电极上的士原子量显着提高了电催化甲醇氧化的速率。 超高真空电子光谱方法和无线电标签技术的结合将用于研究这些钌沉积物在甲醇氧化催化中的结构的作用。 这项工作可能会导致对这一重要催化系统机制的基本理解。 该研究项目将探索铂电极上亚层弦氮沉积物的结构与甲醇的电催化氧化活性之间的相关性。 这些亚米层沉积物的结构和组成将通过电子光谱和放射化学方法获得。 对这种技术上重要的催化反应的更详细的理解应随之而来。