Effects of Pressure and Carrier Gas on Homogeneous Nucleation Vapors

压力和载气对均质成核蒸气的影响

• 批准号: 9976615
• 负责人: Philip Hopke
• 金额: $ 29万
• 依托单位: Clarkson University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-02-01 至 2004-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9976615&HistoricalAwards=false
• 关键词: Effects; Pressure; Carrier; Gas; Homogeneous

AbstractCTS-9976615P.K. Hopke and M.P. Anisimov, Clarkson UniversityIt is proposed to investigate the effect of the carrier gas and its pressure on the process of homogeneous nucleation by using a flow diffusion cloud chamber (FDCC). This is an alternative to the thermal diffusion cloud chamber (TDCC), also based on mass and heat diffusion, but with additional control on the nucleation process and its location in the chamber. A high pressure (up to 100 bar) FDCC will be constructed, and critical supersaturating and nucleation rates for a series of gases a series of carrier gases (methanol, ethanol, 1- and 2-propanol, 1-butanol, and n-nonane in hydrogen, helium, nitrogen and argon) will be tested. A model predicts the location where nucleation occurs. The effect of carrier gases and their pressure is an important scientific open issue of practical relevance in air pollution, and high-pressure nucleation processes in chemical industry.

摘要CTS-9976615 P.K. Hopke和M. P. Anisimov，克拉克森大学提出用流动扩散云室（FDCC）研究载气及其压力对均匀成核过程的影响。 这是热扩散云室（TDCC）的替代方案，也是基于质量和热扩散，但对成核过程及其在室内的位置进行了额外的控制。 将构建高压（高达100巴）FDCC，并且将测试一系列气体和一系列载气（甲醇、乙醇、1-丙醇和2-丙醇、1-丁醇和正壬烷在氢气、氦气、氮气和氩气中）的临界过饱和和成核速率。 模型预测成核发生的位置。 载气及其压力的影响是一个重要的科学开放问题，在空气污染和化学工业中的高压成核过程中具有实际意义。