Atmospheric Oxidation Mechanism of Isoprene

异戊二烯的大气氧化机理

• 批准号: 0204705
• 负责人: Simon North
• 金额: $ 29.8万
• 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: 2002
• 资助国家: 美国
• 起止时间: 2002-06-01 至 2006-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0204705&HistoricalAwards=false
• 关键词: Atmospheric; Oxidation; Mechanism; Isoprene

The objectives of this work involve a detailed experimental and theoretical analysis of the atmospheric oxidation chemistry of isoprene. Isoprene is the major unsaturated organic compound emitted into the atmosphere by vegetation. Product analysis and kinetic studies will be performed on reactions of isoprene with oxygen and nitrogen radicals. These experimental results will be compared to theoretical predictions of yields and rates for these same reactions. Oxygen and nitrogen radical competititve reactions with isoprene will also be studied and the combined results used to develop a mechanistic understanding of isoprene oxidation reactions. With this award, the Organic and Macromolecular Chemistry Program and the Atmospheric Chemistry Program are supporting the research of Dr. Simon W. North and Dr. Renyi Zhang of the Department of Chemistry at Texas A & M University. Drs. North and Zhang will work on a detailed study of the atmospheric oxidation chemistry of isoprene. Isoprene is the major unsaturated organic compound emitted into the atmosphere by vegetation. A better understanding of how isoprene interacts with reactive oxygen and nitrogen species in our atmosphere could help future efforts to model and predict: 1) the role isoprene levels play in ozone formation; 2) long range transport of organic nitrates; and 3) carbon cycling in the atmosphere. Students trained during the course of this work will gain experience in environmental, atmospheric and organic chemistry.

这项工作的目标包括对异戊二烯的大气氧化化学进行详细的实验和理论分析。 异戊二烯是植被排放到大气中的主要不饱和有机化合物。 将对异戊二烯与氧和氮自由基的反应进行产物分析和动力学研究。 这些实验结果将与这些相同反应的产率和速率的理论预测进行比较。 还将研究氧和氮自由基与异戊二烯的竞争反应，并将综合结果用于发展对异戊二烯氧化反应的机理理解。 有机与高分子化学项目和大气化学项目通过该奖项支持德克萨斯农工大学化学系的 Simon W. North 博士和张仁义博士的研究。 博士。诺斯和张将致力于异戊二烯的大气氧化化学的详细研究。 异戊二烯是植被排放到大气中的主要不饱和有机化合物。 更好地了解异戊二烯如何与大气中的活性氧和氮相互作用，有助于未来的建模和预测：1）异戊二烯水平在臭氧形成中发挥的作用； 2）有机硝酸盐的长距离运输； 3）大气中的碳循环。在这项工作中接受培训的学生将获得环境、大气和有机化学方面的经验。