2-甲基呋喃/氧气/氩气低压预混层流火焰燃烧中间产物的鉴定  

Identification of Combustion Intermediates in a Low-Pressure Premixed Laminar 2-Methylfuran/Oxygen/Argon Flame

作　　者：尧命发[1] 李哲名[1] 童来会[1] 王占东[2] 金汉峰[2] 卫立夏[1] 

机构地区：[1]天津大学内燃机燃烧学国家重点实验室,天津300072 [2]中国科学技术大学国家同步辐射实验室,合肥230029

出　　处：《燃烧科学与技术》2012年第5期385-392,共8页Journal of Combustion Science and Technology

基　　金：国家自然科学基金资助项目(51176134);中英研究员基金资助项目(Sino-British Fellow Trust)

摘　　要：利用同步辐射真空紫外光电离质谱结合分子束取样技术,研究了燃烧当量比为0.8的2-甲基呋喃/氧气/氩气低压预混层流火焰的化学组成,得到了2-甲基呋喃火焰的光电离质谱和燃烧中间产物的光电离效率谱.从光电离效率谱得到了相应分子/自由基的电离能.将实验测量得到的电离能与文献值或者利用量子化学从头算方法得到的理论值比较,确定了2-甲基呋喃火焰中燃烧中间产物的化学结构,根据这些产物的化学结构分析了2-甲基呋喃及其初级燃烧反应产物的消耗过程.The chemical structure of a low-pressure premixed laminar 2-methylfuran/oxygerdargon flame with an equivalence ratio of 0.8 was investigated by using tunable synchrotron vacuum ultraviolet photoionization and molecular-beam mass spectrometry. The photoionization mass spectra of 2-methylfuran/oxygen/argon flame and the photoionization efficiency curves of the combustion intermediates were recorded. The ionization energies of combustion intermediates were identified from the photoionization efficiency curves. The combustion intermediates were identified by comparing the measured ionization energies with those reported in literature or those calculated by the method of ab initio. The possible reaction pathways of 2-methylfuran and its primary combustion derivatives were proposed based on the intermediates identified.

关 键 词：2-甲基呋喃 低压预混层流燃烧 燃烧中间产物 

分 类 号：TK16[动力工程及工程热物理—热能工程]