Organic Chemistry at the Sulfuric Acid-Vapor Interface

硫酸-蒸气界面的有机化学

• 批准号: 0094911
• 负责人: Jeffrey Roberts
• 金额: $ 39万
• 依托单位: University of Minnesota-Twin Cities
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-03-15 至 2006-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0094911&HistoricalAwards=false
• 关键词: Organic; Chemistry; Sulfuric; Acid; Vapor

This research project, supported in the Analytical and Surface Chemistry Program, addresses the question of the reactivity of organic molecules with the surface of liquid sulfuric acid solutions. Instrumentation is developed that allows the study of surface reaction, diffusion and bulk partitioning of reactant products, and identification of desorbed product species, under conditions relevant to atmospheric acid aerosol chemistry. Kinetics and mechanisms of these organic molecule reactions as a function of surface temperature, water vapor pressure, acid composition, and organic reactant flux are examined. A basic understanding of the physical chemistry of gas-liquid interactions, and tropospheric aerosol chemistry is the outcome of this project carried out in the laboratory of Professor Jeffrey Roberts at the University of Minnesota. Very little is known about the mechanisms and kinetics of gas-liquid surface reactions. This research project addresses the kinetics and mechanisms of organic molecule reactions with the surface of sulfuric acid liquids, using an apparatus directly developed for these studies. The results of these investigations are relevant to an understanding of tropospheric aerosol chemistry.

该研究项目得到了分析和表面化学计划的支持，解决了有机分子与液体硫酸溶液表面的反应性问题。 开发的仪器可以在与大气酸性气溶胶化学相关的条件下研究反应物产物的表面反应、扩散和本体分配，并识别解吸的产物种类。 研究了这些有机分子反应随表面温度、水蒸气压、酸组成和有机反应物通量变化的动力学和机制。 对气液相互作用的物理化学和对流层气溶胶化学的基本了解是明尼苏达大学 Jeffrey Roberts 教授实验室进行的该项目的成果。人们对气液表面反应的机制和动力学知之甚少。 该研究项目使用直接为这些研究开发的设备，研究有机分子与硫酸液体表面反应的动力学和机制。 这些研究的结果与对对流层气溶胶化学的理解有关。