Quenching of Excited States of Lithium by H2, D2, N2, Alkane and Alkene Hydrocarbons: Kinetics and Dynamics

H2、D2、N2、烷烃和烯烃烃对锂激发态的淬灭：动力学和动力学

• 批准号: 0131115
• 负责人: Solomon Bililign
• 金额: $ 28.57万
• 依托单位: North Carolina Agricultural & Technical State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-03-01 至 2006-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0131115&HistoricalAwards=false
• 关键词: Quenching; Excited; States; Lithium; H2

In this project funded by the Experimental Physical Chemistry Program of the Chemistry Division, Bililign will address two important issues of physical chemistry. The first deals with the reaction dynamics of M-H2 (M = alkali metal). By measuring the nascent rotational state distribution of the LiH product we will try to understand the reaction mechanism. The second deals with the C-H activation by metal atoms. The physical and chemical quenching of excited Li atoms by alkane and alkene hydrocarbons will be investigated by means of cascade and time-resolved atomic fluorescence techniques. Far-wing scattering state spectroscopy will be employed in the studies of reaction dynamics.This research deals with two important areas of chemical reaction processes. The goal is to understand how reagent molecules approach, collide, exchange energy, and finally separate into products. The benefits of such knowledge include applications to the modeling of chemical reactions in the upper atmospheric, plasma processes, chemical synthesis, and chemical reaction process technology. This work will be conducted with students who will thereby gain research experience in preparation for advanced studies or entry into the scientific/technological workforce.

在这个由化学部实验物理化学项目资助的项目中，Bililign将解决物理化学的两个重要问题。第一部分讨论了M- h2 （M =碱金属）的反应动力学。通过测量LiH产物的初旋态分布，我们将试图了解反应机理。第二种是金属原子对碳氢键的活化。用级联和时间分辨原子荧光技术研究了被激发的锂原子被烷烃和烯烃猝灭的物理和化学过程。远翼散射态光谱学将用于反应动力学的研究。这项研究涉及化学反应过程的两个重要领域。目的是了解试剂分子如何接近、碰撞、交换能量，并最终分离成产物。这些知识的好处包括应用于高层大气中的化学反应建模、等离子体过程、化学合成和化学反应过程技术。这项工作将与学生一起进行，学生将因此获得研究经验，为深造或进入科学/技术队伍做准备。