【摘 要】
：
利用可调谐同步辐射真空紫外光电离和分子束质谱技术研究了当量为1的低压、预混乙烯/氧气/氩气火焰.利用光电离效率谱和光电离质谱,探测了火焰中燃烧中间物,并鉴别了C3H4、C2
【机 构】
：
安徽工业大学数理学院,中国科学技术大学国家同步辐射实验室
【基金项目】
：
国家自然科学基金;中国科学院基金
论文部分内容阅读
利用可调谐同步辐射真空紫外光电离和分子束质谱技术研究了当量为1的低压、预混乙烯/氧气/氩气火焰.利用光电离效率谱和光电离质谱,探测了火焰中燃烧中间物,并鉴别了C3H4、C2H4O和C4H4等中间物的同分异构体.在近电离阈值光子能量下,通过扫描燃烧炉的位置测量了火焰中物质的摩尔分数曲线,并利用Pt/Pt-13%Rh热电偶测得了火焰的温度曲线.与以前的工作相比,观察到很多新的燃烧中间物,如C3H2、C3H3、C3H5、C2H6O、C4H2、C4H4、C4H6、C3H4O、C3H6O、C3H8O、C5H6、C4HsO和C7H8等.同时,在火焰中检测到了包括CH3、C2H3、C2H5、HCO、C3H3以及C3H5在内的一系列自由基.在实验工作的基础上,发展了一个包含40种火焰物质和223个基元反应的简化动力学模型来对火焰进行模拟.对主要物质和大部分中间产物的拟合结果与实验值相当吻合.
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