Pyrolysis Jet Spectroscopy and Dynamics of Transient Species

热解喷射光谱学和瞬态物质动力学

• 批准号: 8914403
• 负责人: Dennis Clouthier
• 金额: $ 14.2万
• 依托单位: University of Kentucky Research Foundation
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-02-01 至 1993-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8914403&HistoricalAwards=false
• 关键词: Pyrolysis; Jet; Spectroscopy; Dynamics; Transient

Dr. Clouthier is supported by a grant from The Experimental Physical Chemistry Program to study the high resolution spectra of small transient molecules and free radicals produced through high temperature decomposition in an expanding jet. The results of this work have a direct impact on many areas of applied research and engineering including energy conversion, fuel utilization, coal gasification, and chemical vapor deposition techniques used in the semiconductor industry. Dr. Clouthier has developed a new technique which he calls pyrolysis jet spectroscopy, in which precursor molecules, entrained in a high pressure stream of inert gas, are pyrolyzed just prior to expansion through a nozzle into a vacuum chamber. The short contact time and expansion cooling allow the observation of the rotationally cold spectra of even very short-lived and reactive species. He plans to apply this new technique to the study of several transient species including: dichlorocarbene, formyl cyanide, thioacetaldehyde, thioacetone, selenoformaldehyde, and a series of alkyl metal compounds thought to be important intermediates in the chemical vapor deposition process used by semiconductor industries.

Clouthier博士得到了实验基金会的资助。 研究高分辨率光谱的物理化学程序 产生的小的瞬时分子和自由基 在膨胀射流中的高温分解。 的 这项工作的结果对许多领域产生直接影响， 应用研究和工程，包括能源转换， 燃料利用、煤气化和化学蒸汽 半导体工业中使用的沉积技术。 克劳瑟博士发明了一种新技术 热解喷射光谱，其中前体分子， 夹带在惰性气体的高压流中， 就在通过喷嘴膨胀到真空室之前。 短的接触时间和膨胀冷却允许 观测到的旋转冷光谱， 短寿命和活性物种。 他计划将这一新的 技术的几个瞬态物种的研究，包括： 二氯卡宾，甲酰基氰，硫代乙醛，硫代丙酮， 硒甲醛和一系列烷基金属化合物 被认为是化学蒸汽中重要的中间体 半导体工业使用的沉积工艺。