Heterogeneous Reactions of Chloride Salts in the Atmosphere: A Surface Science Approach

大气中氯化物盐的非均相反应：表面科学方法

• 批准号: 0080806
• 负责人: John Hemminger
• 金额: $ 30万
• 依托单位: University of California-Irvine
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-09-01 至 2004-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0080806&HistoricalAwards=false
• 关键词: Heterogeneous; Reactions; Chloride; Salts; Atmosphere

Reactions of gases at solid interfaces play a key role in atmospheric chemistry. This project aims at developing a better understanding of the surface composition of systems that make up atmospheric particles, such as sea salt particles and sea salt ice. In particular, the phenomenon of surface segregation in mixed halides (e.g. NaCl doped with Br) will be studied using X-ray photoelectron microscopy, scanning electron microscopy, and other techniques. The kinetics and mechanisms of other heterogeneous reactions relevant to atmospheric chemistry will also be studied, including the particle size dependence of the effect of water on reactions on NaCl surfaces, and preliminary studies of chemistry on soot.

气体在固体界面上的反应在大气化学中起着关键作用。该项目的目的是更好地了解构成大气颗粒（如海盐颗粒和海盐冰）的系统的表面组成。特别是，在混合卤化物（如NaCl掺杂Br）的表面偏析现象将使用X射线光电子显微镜，扫描电子显微镜和其他技术进行研究。还将研究与大气化学有关的其他非均相反应的动力学和机制，包括水对NaCl表面反应的影响对颗粒大小的依赖性，以及对烟灰化学的初步研究。