US-Federal Republic of Germany Cooperative Research on the Properties and Reactivity of Metal Clusters

美德意志联邦共和国金属团簇性能和反应性合作研究

• 批准号: 8912626
• 负责人: Karl Gingerich
• 金额: $ 1.35万
• 依托单位: Texas A&M Research Foundation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-02-01 至 1991-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8912626&HistoricalAwards=false
• 关键词: US; Federal; Republic; Germany; Cooperative

This award supports Dr. Karl A. Gingerich to collaborate with Dr. Winfried Schulze and Dr. D. M. Kolb of the Fritz Haber Institute of the Max Planck Gesellschaft, Berlin, FRG, in spectroscopic studies of the reactions of metal clusters ranging in size from two atoms to colloidal particles. With Dr. Schulze, he will investigate the dependence of the electronic and vibrational energy levels on cluster size, the stability of neutral and charged clusters and of their specific reactivity using a wide variety of modern research techniques. Specific systems to be studied include clusters of lithium, iron and nickel, and their interactions with nitrogen and carbon monoxide in low temperature matrices and in the gas phase. With Dr. Kolb, he will measure the optical spectra of molecules such as Germanium, Aluminum and Gallium. These molecules have been or are being studied by equilibrium mass spectrometry at Texas A & M to obtain their bond energies. Dr. Schulze's group is concerned with the preparation, characteri- zation and reactions of metal clusters. They have extensive experience in optical and vibrational studies of matrix-isolated metals and metallic clusters. Also, they have refined the gas aggregation technique to generate metal clusters in narrow size distributions and in high intensities, including colloidal sizes. Dr. Kolb's group is concerned with fundamental aspects of matrix isolation spectroscopy of metal atoms and small clusters, using optical spectroscopy as their principal analytical tool. A major objective of their work is to improve fundamental understanding of matrix effects on electronic transitions and geometry. Dr. Gingerich's research has involved using equilibrium mass spectroscopy to study the bond energies of small inorganic molecules, most of them diatomic metals and small metallic clusters that are important in catalytic processes. Through collaboration, he will gain more experience in the preparation and spectroscopic study of metal clusters larger than the ones he has been investigating. He also will learn techniques for studying their reactivity and catalytic action. In view of the development of laser spectroscopy and the extablishment of a Surface Science Center at Texas A & M, this experience will lay the groundwork for extending his research on metal clusters into catalysis and surface science oriented studies.

该奖项支持Karl A. Gingerich博士与德国柏林Max Planck Gesellschaft的Fritz Haber研究所的Winfried Schulze博士和D. M. Kolb博士合作，对从两个原子到胶体粒子大小的金属团簇的反应进行光谱研究。与Schulze博士一起，他将使用各种现代研究技术研究电子和振动能级对团簇大小的依赖，中性和带电团簇的稳定性以及它们的特定反应性。要研究的具体系统包括锂、铁和镍的簇，以及它们在低温基质和气相中与氮和一氧化碳的相互作用。他将与科尔布博士一起测量锗、铝和镓等分子的光谱。这些分子已经或正在用平衡质谱法在德克萨斯大学进行研究，以获得它们的键能。Schulze博士的团队主要研究金属团簇的制备、表征和反应。他们在基体隔离金属和金属团簇的光学和振动研究方面有丰富的经验。此外，他们还改进了气体聚集技术，以产生窄尺寸分布和高强度的金属团簇，包括胶体大小。Kolb博士的团队关注金属原子和小簇的基质分离光谱的基本方面，使用光谱学作为他们的主要分析工具。他们工作的一个主要目标是提高对电子跃迁和几何的矩阵效应的基本理解。Gingerich博士的研究包括使用平衡质谱来研究小无机分子的键能，其中大多数是双原子金属和小金属团簇，它们在催化过程中很重要。通过合作，他将获得比他正在研究的更大的金属团簇的制备和光谱研究方面的更多经验。他还将学习研究它们的反应性和催化作用的技术。鉴于激光光谱学的发展和德克萨斯农工大学表面科学中心的建立，这一经历将为他将金属团簇的研究扩展到催化和表面科学导向的研究奠定基础。