Chemical Kinetics of Phosphorus-Containing Compounds Used as Fire Suppressants and Chemical Agent Surrogates

用作灭火剂和化学制剂替代品的含磷化合物的化学动力学

基本信息

批准号：
1706825
负责人：
Eric Petersen
金额：
$ 27万
依托单位：
Texas A&M Engineering Experiment Station
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2017
资助国家：
美国
起止时间：
2017-08-01 至 2020-07-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1706825&HistoricalAwards=false
关键词：
Chemical Kinetics Phosphorus Containing Compounds

项目摘要

Compounds containing phosphorus have modern, global ramifications because of their use as promising fire suppressants. The alternate usage of these phosphorous compounds as promising replacements for halon-based fire suppressants provides additional, far-reaching impact and a strong need for sufficient understanding of their chemical behavior. These compounds can also be used as chemical agent simulants to understand more about their behavior in flames. In this research project, the chemistry of phosphorus-based molecules will be studied experimentally. The primary result will be an accurate representation of the important chemical reactions that occur in flames containing these phosphorous compounds. Improved models can then be employed by engineers and scientists. This multidisciplinary project will allow opportunities for the graduate students, postdoctoral researcher, and undergraduate students working on the project to publish and attend conferences in fields in which they might not normally participate.The compounds of interest to this project are phosphorus-based. A major aspect of accurately predicting their combustion behaviors lies in the accuracy of the phosphorus-oxidation kinetics sub-mechanism. Despite their current importance, there are few kinetics data at combustion conditions for these compounds, and the chemical kinetic reaction rate coefficients are not at all well known. This fundamental study will focus on making direct measurements of the reaction rate constants of key reactions in the phosphorus oxidation sub-mechanism. The fundamental chemical kinetics information produced from this work will be one-of-a-kind and will provide results that are much needed for simulating the effects of P-containing compounds in a combustion environment. By using a shock tube to produce the high-temperature conditions (1000 to 2000 K), laser absorption measurements of key intermediate species such as PO2, HOPO, H2O, and HOPO2 will be performed. New spectroscopic information thereon will be obtained, and laser absorption measurements of their concentrations will be performed for the first time in a shock tube. Such measurements will lead to determination of the reaction rates of several important reactions (up to 6) for the first time. The successful completion of this project will greatly advance the predictive capabilities for the combustion behavior of several phosphorus-containing species of practical and topical interest.

含磷化合物因其用作有前途的灭火剂而具有现代的全球影响。这些磷化合物作为哈龙基灭火剂的有希望的替代品的交替使用提供了额外的、深远的影响，并且强烈需要充分了解它们的化学行为。这些化合物还可以用作化学试剂模拟物，以更多地了解它们在火焰中的行为。在这个研究项目中，将对磷基分子的化学进行实验研究。主要结果将是准确表示含有这些磷化合物的火焰中发生的重要化学反应。工程师和科学家可以采用改进的模型。这个多学科项目将为从事该项目的研究生、博士后研究员和本科生提供发表论文和参加他们通常不参加的领域的会议的机会。该项目感兴趣的化合物是磷基化合物。准确预测其燃烧行为的一个主要方面在于磷氧化动力学子机制的准确性。尽管它们目前很重要，但这些化合物在燃烧条件下的动力学数据很少，并且化学动力学反应速率系数根本不为人所知。这项基础研究将侧重于直接测量磷氧化子机制中关键反应的反应速率常数。这项工作产生的基本化学动力学信息将是独一无二的，并将提供模拟燃烧环境中含磷化合物的影响所急需的结果。通过使用激波管产生高温条件（1000 至 2000 K），将对 PO2、HOPO、H2O 和 HOPO2 等关键中间物质进行激光吸收测量。将获得有关其的新光谱信息，并且将首次在激波管中对其浓度进行激光吸收测量。此类测量将首次确定几个重要反应（最多 6 个）的反应速率。该项目的成功完成将极大地提高对几种具有实际和热点意义的含磷物质的燃烧行为的预测能力。