UNS: Highly Sensitive H02 Diagnostics and Oxidation Kinetics of Oxygenated Fuels at High Pressure

1507358 （Ju）该提案为研究存在于更复杂燃料中的基础燃料的反应现象带来了一套广泛的实验工具。普林斯顿大学开发的这些新工具使研究人员能够以前所未有的灵敏度观察这一现象，特别是在发动机常见的高压条件下。主要研究人员建议让研究生参与研究和推广活动，使用普林斯顿能源社区证书计划。一种新的，高灵敏度，定量的中红外FRS（法拉第旋转光谱）燃烧诊断HO2和OH的方法将被开发。提出的中红外FRS/IR-LAS集成光解流动反应器将提供变革能力，并能够准确量化低温和中温下的关键基本反应速率。测量的HO2/OH和其他中间物质、火焰速度和基本速率常数将填补目前对低温高压下燃烧动力学的认识空白，并将在开发以下常见和重要的基础燃料：甲酸甲酯、甲醇和二甲醚（DME）的有效高压低温动力学机制方面发挥关键作用。得到的高压甲醇、甲酸甲酯和二甲醚的动力学机制将形成其他较大的碳氢化合物燃料、醇、生物柴油和酯的基础机制。

1507358 (Ju)This proposal brings an extensive suite of experimental tools to study the reaction phenomenon of basic fuels that exist in more complicated fuels. These new tools developed at Princeton University allow researchers to look at the phenomenon with sensitivity that has not previously existed, especially under high-pressure conditions common in engines. The principal investigators propose to involve graduate students in the research and outreach activities using the Princeton Energy for Community Certificate Program.A new, highly sensitive, quantitative mid-IR FRS (Faraday Rotation Spectroscopy) combustion diagnostic method for HO2 and OH will be developed. The proposed mid-IR FRS/IR-LAS integrated photolysis flow reactor will provide transformative capabilities and enable accurate quantification of key elementary reaction rates at low and intermediate temperatures. The measured HO2/OH, and other intermediate species, flame speeds, and elementary rate constants will fill the gap of knowledge of the current understanding of combustion kinetics at low temperature and high pressure, and will play a critical role in developing a validated, high pressure and low temperature kinetic mechanisms for the following common and important base fuels: methyl formate, methanol, and dimethyl ether (DME). The obtained high pressure methanol, methyl formate, and DME kinetic mechanisms will form the base mechanisms for other larger hydrocarbon fuels, alcohols, biodiesels, and esters.