Temperature Dependence of Neutral and Ionic Metal Combustion Kinetics

研究了具有环境意义的金属单卤化物和一氧化物在较宽的温度和压力范围内的反应。对金属阳离子的燃烧反应也作了类似的测定。单个反应将使用伦斯勒HTFFR（高温快流反应器）和HTP（高温光化学）反应器进行分离研究，适用于300至1800 K的温度域。这些组合在一起可用于覆盖从10到1000毫巴的压力。用这些设备进行的测量不受其他反应的干扰；温度、压力和浓度可以独立变化。对离子-分子反应动力学的温度依赖性所知甚少。这种反应通常是在燃烧温度以下观察到的，经常是在非热化环境中。HTP反应器的使用允许通过激光诱导荧光（LIF）研究体积、温度平衡反应。LIF的使用为离子-分子反应的研究提供了一种新的方法，而离子-分子反应通常是用质谱法研究的。讨论了对燃烧感兴趣的碱土阳离子的放热、吸热以及加成反应。这项工作的结果是燃烧工程师所需要的，特别是与污染减少有关的建模者，对高温材料，推进，化学气相沉积和大气化学的工作人员也很有用。

Reactions of metal monohalides and monoxides of environmental concern are studied over wide temperature and pressure ranges. Similar measurements are made on combustion reactions of metal cations. Individual reactions will bestudied in isolation using the Rensselaer HTFFR (high-temperature fast-flow reactor) and HTP (high-temperature photochemistry) reactors, suitable for the 300 to 1800 K temperature domain. Together these can be used to cover pressure from 10 to 1000 mbar. The measurements with these facilities are free from interference by other reactions; temperature, pressure, and concentrations can be varied independently.Very little is known of the temperature dependence of the kinetics of ion-molecule reactions. Such reactions are usually observed below combustion temperatures, frequently in non-thermalized environments. The use of the HTP reactors allows study of bulk, temperature-equilibrated reactions by laser-induced fluorescence, LIF. The use of LIF provides a novel method for the study of ion-molecule reactions, which are commonly studied by mass spectrometry. Exothermic and endothermic as well as addition reactions of alkaline-earth cations of combustion interest are addressed. The results of this work are needed by combustion engineers, particularly modelers concerned with pollution abatement, and are also useful for workers in high-temperature materials, propulsion, chemical vapor deposition, and atmospheric chemistry.