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.

这项工作的目标涉及异戊二烯大气氧化化学的详细实验和理论分析。 异戊二烯是通过植被发射到大气中的主要不饱和有机化合物。 产品分析和动力学研究将对异戊二烯与氧和氮自由基的反应进行。 这些实验结果将与这些相同反应的产量和速率的理论预测进行比较。 还将研究与异戊二烯的氧气和氮自由基竞争反应，并将结合结果用于对异丙烯氧化反应产生机械理解。 通过此奖项，有机和大分子化学计划和大气化学计划正在支持德克萨斯A＆M大学化学系的Simon W. North博士和Renyi Zhang博士的研究。 博士。 North和Zhang将对异戊二烯的大气氧化化学进行详细研究。 异戊二烯是通过植被发射到大气中的主要不饱和有机化合物。 更好地理解异戊二烯如何与我们大气中的活性氧和氮物种相互作用，可以帮助未来的努力建模和预测：1）异戊二烯水平在臭氧形成中的作用； 2）有机硝酸盐的远程运输； 3）大气中的碳循环。在这项工作期间接受培训的学生将获得环境，大气和有机化学的经验。