U.S.-New Zealand Cooperative Research: Kinetics of Radical- Atom Reactions

美国-新西兰合作研究：自由基原子反应动力学

• 批准号: 9020584
• 负责人: Robert Curl
• 金额: $ 1.01万
• 依托单位: William Marsh Rice University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-09-01 至 1994-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9020584&HistoricalAwards=false
• 关键词: U.S.; New; Zealand; Cooperative; Research

This award will support a two-year collaborative project between Professor Robert F. Curl, Department of Chemistry, Rice University, and Professor Leon F. Phillips, Department of Chemistry, University of Canterbury, Christchurch, New Zealand. The activity takes place under the U.S.-New Zealand Cooperative Science Program. The scientists will cooperate in a study of the reactions of several small free radicals (transient, reactive chemical species such as C2H, HCO, and CH2CN) with oxygen atoms. Such a study is relevant both to understanding aspects of the chemistry of the interstellar medium, as well as the reactions taking place in various combustion processes. By measuring the rate constants of these radical-atom reactions, and in some cases carrying out spectroscopic studies to identify reaction products, the scientists expect to contribute to a greater understanding of these reaction systems. The radicals will be produced by excimer flash photolysis of suitable precursor molecules. The oxygen atoms (and later, other atoms and OH) will be generated in a discharge flow system, and allowed to react with the radicals. Both the U.S. and New Zealand research groups have experience in this area of research, involving flash photolysis, infrared spectroscopy, and the use of laser probes. Professor Phillips and his colleagues at Canterbury University have focused primarily on the chemical kinetics of these reactions, and have developed experimental techniques for carrying out such measurements, including methods for measuring the concentrations of atoms. Professor Curl and his group at Rice have emphasized high resolution infrared spectroscopy as well as kinetic studies. Exchange visits by the principal investigators will serve to develop the capability for atom- radical kinetic studies at Rice and to enhance the spectroscopic analysis strengths at Canterbury.

该奖项将支持为期两年的合作项目， Robert F.美国莱斯大学化学系， Leon F教授菲利普斯，化学系，大学 位于新西兰基督城的坎特伯雷。 开展活动 在美国-新西兰合作科学计划。 的 科学家们将合作研究几种 小的自由基（瞬时的、反应性的化学物质， C2 H、HCO和CH 2CN）。 这样的研究是有意义的 既有助于理解星际物质的化学性质， 介质，以及各种燃烧中发生的反应 流程. 通过测量这些自由基原子的速率常数， 反应，并在某些情况下进行光谱研究， 确定反应产物，科学家们希望有助于 更好地了解这些反应系统。 激进分子会 通过合适的前体的受激准分子闪光光解产生 分子。 氧原子（以及后来的其他原子和OH）将被 在排放流系统中产生，并允许与 根的 美国和新西兰的研究小组都有经验， 这一领域的研究，涉及闪光光解，红外 光谱学和激光探针的使用。 菲利普斯教授和 他在坎特伯雷大学的同事主要关注 这些反应的化学动力学， 进行这种测量的实验技术，包括 测量原子浓度的方法。 科尔教授 和他在赖斯的研究小组强调高分辨率红外 光谱以及动力学研究。 联合国秘书长的互访 主要研究人员将致力于发展原子能的能力， 自由基动力学研究在赖斯和加强光谱 分析实力在坎特伯雷。