呋喃及其衍生物低压热解产物鉴定和质谱分析  

Product Identification and Mass Spectrometric Analysis on Pyrolysis of Furan and Its Derivatives at Low Pressure

作　　者：程占军[1] 王占东[1] 苑文浩[2] 齐飞[1,2] 李玉阳[2] 

机构地区：[1]中国科学技术大学国家同步辐射实验室,合肥230029 [2]中国科学技术大学火灾科学国家重点实验室,合肥230026

出　　处：《燃烧科学与技术》2014年第6期534-539,共6页Journal of Combustion Science and Technology

基　　金：国家自然科学基金资助项目(51106146;51036007);安徽省杰出青年科学基金资助项目(1408085J09)

摘　　要：利用同步辐射真空紫外光电离质谱方法鉴定了呋喃、2-甲基呋喃和2,5-二甲基呋喃的低压流动反应器热解产物的分子结构.基于质谱信号强度和生成温度,比较了每种燃料的主要初始分解产物的异同.通过不同温度下的质谱测量结果对3种燃料的初始分解路径进行了分析,发现呋喃、2-甲基呋喃和2,5-二甲基呋喃的最重要的初始分解路径是通过卡宾中间体分别生成CO+丙炔,CO+1-丁炔和CH3CO+C4H5,从而验证了前人理论研究成果.The pyrolysis products of furan,2-methylfuran（2,MF）and 2,5-dimethylfuran（DMF）in flow reactor at low pressure were detected by synchrotron vacuum ultraviolet photoionization mass spectrometry（SVUV-PIMS）. Regarding the signal intensities and formation temperatures,the major primary decomposition products of three fuels were compared. Mass spectrometric analysis was performed to provide experimental evidence for discussion of primary decomposition pathways of the three fuels. The dominant primary decomposition pathways of furan,2,MF and DMF pyrolysis are concluded to be the carbenic rearrangement to produce CO＋propyne,CO＋1-butyne and acetyl＋C4,H5,respectively,verifying previous theoretical results.

关 键 词：低压流动反应器热解 呋喃及其衍生物 同步辐射真空紫外光电离质谱 产物鉴定 质谱分析 

分 类 号：TK16[动力工程及工程热物理—热能工程]