RUI: Gas Phase Reactions of Excited State Transition Metal Ions

RUI：激发态过渡金属离子的气相反应

• 批准号: 0078771
• 负责人: William Taylor
• 金额: $ 16.92万
• 依托单位: University of Central Arkansas
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-08-15 至 2004-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0078771&HistoricalAwards=false
• 关键词: RUI; Gas; Phase; Reactions; Excited

Professor William Taylor of the University of Central Arkansas is supported by the Experimental Physical Chemistry program to perform experimental studies on metal ions complexed with hydrocarbons in the gas phase. Transition metals are frequently used as catalysts for activating hydrocarbons, but it is not understood how reactivity depends on the electronic state of the metal. This proposal seeks to study the reactivity of several late first-, second- and third-row transition metal ions with small hydrocarbons as a function of electronic excitation of the metal. Low energy ion drift cell and electronic state chromatographic methods will be used to study reactive systems such as platinum ion and methane. A successful outcome of this proposal would be a model of transition metal reactivity that would allow better catalysts to be designed. Important issues in this model include considerations of electron configuration and conservation of electron spin. New results from the larger metals proposed will be interpreted in the light of the PI's previous results on first row chemistry.Transition metal ions have the ability to break sigma bonds, and this property is most useful in converting hydrocarbons to other compounds. Understanding the mechanism of this process will allow design of new and better catalysts for use in chemical synthesis and the petroleum industry.

中阿肯色大学的威廉·泰勒教授在实验物理化学项目的支持下，对金属离子与气相碳氢化合物的络合进行实验研究。过渡金属常被用作活化碳氢化合物的催化剂，但目前尚不清楚反应性如何取决于金属的电子态。本提案旨在研究几个晚期第一，第二和第三行过渡金属离子与小碳氢化合物的反应性，作为金属电子激发的函数。低能离子漂移电池和电子态色谱方法将用于铂离子和甲烷等反应体系的研究。这个建议的一个成功的结果将是一个过渡金属反应性的模型，这将允许设计更好的催化剂。该模型中的重要问题包括考虑电子组态和电子自旋守恒。提出的较大金属的新结果将根据PI先前在第一行化学上的结果来解释。过渡金属离子具有破坏sigma键的能力，这种性质在将碳氢化合物转化为其他化合物时非常有用。了解这一过程的机理将有助于设计出新的、更好的催化剂，用于化学合成和石油工业。