Temperature Dependence of Neutral and Ionic Metal Combustion Kinetics

在较宽的温度和压力范围内研究了金属单卤化物和环境关注的单氧化物的反应。金属阳离子的燃烧反应也进行了类似的测量。单独的反应将使用Rensselaer HTFFR(高温快流反应堆)和HTP(高温光化学)反应器进行隔离研究，适用于300至1800K的温度范围。这些都可以用来覆盖从10到1000毫巴的压力。这些设备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。人们对离子-分子反应动力学的温度依赖性知之甚少。这样的反应通常在燃烧温度以下观察到，通常是在非热化环境中。使用HTP反应器，可以用激光诱导荧光(LIF)研究整体的、温度平衡的反应。激光诱导荧光技术的应用为研究离子-分子反应提供了一种新的方法，而离子-分子反应通常是通过质谱学来研究的。讨论了具有燃烧意义的碱土阳离子的放热、吸热和加成反应。这项工作的结果是燃烧工程师所需要的，特别是与减少污染有关的建模人员，也对高温材料、推进、化学气相沉积和大气化学的工作人员有用。

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.