Shock Tube Studies of Soot Chemistry Over Extreme Ranges of Pressure and Temperature

极端压力和温度范围内烟尘化学的激波管研究

• 批准号: 0109053
• 负责人: Kenneth Brezinsky
• 金额: $ 31.8万
• 依托单位: University of Illinois at Chicago
• 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: 2001-07-01 至 2004-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0109053&HistoricalAwards=false
• 关键词: Shock; Tube; Studies; Soot; Chemistry

This is a study of the mechanisms of formation of soot. Shock-tube experiments designed to clarify he importance of several hypothesized pathways for single-, double-, and multiple-ring systems are performed. Two different shock tubes are used: a single-pulse, high-pressure shock tube with species analysis by sampling and gas chronstography/mass spectrometry, and a "low pressure" shock tube equipped for laser schlieren and laser flash absorption analysis. Systems studied include the decomposition of 1, 5-hexadiyne, recombination of propargyl radicals, reactions of benzyne generated by pyrolysis of phthalic anhydride, and the chemistry of diacetylene and diacetylene/acetylene mixtures including formation of polycyclic aromatic hydrocarbons (PAHs). Elucidation of ring formation pathways and the quantification of related kinetic parameters over wide range of temperature and pressure leads to improved models of soot formation.

这是一项关于煤烟形成机理的研究。激波管实验旨在澄清他的重要性，单，双，和多环系统的几个假设的途径。使用两种不同的激波管：一种是单脉冲高压激波管，通过采样和气体计时/质谱进行物种分析，另一种是“低压”激波管，用于激光纹影和激光闪光吸收分析。所研究的体系包括1，5-己二炔的分解、炔丙基自由基的重组、苯酐热解产生的苯炔的反应以及二乙炔和二乙炔/乙炔混合物的化学反应，包括多环芳烃（PAHs）的形成。阐明环的形成途径和相关的动力学参数在很宽的温度和压力范围内的量化导致改进模型的烟尘形成。