波谱学杂志 ›› 1989, Vol. 6 ›› Issue (4): 445-451.

• 研究论文 • 上一篇    下一篇

放电管直径和水含量对脂肪醚气相微波放电分解产生活泼自由基影响的ESR研究

王稳定1,2, 陈德文1,2, 徐广智1,2, 刘庆泰3   

  1. 1. 北京分子动态及稳态结构国家实验室;
    2. 中国科学院化学研究所;
    3. 北京师范学院化学系
  • 收稿日期:1988-09-12 修回日期:1989-01-23 出版日期:1989-12-05 发布日期:2018-01-22
  • 基金资助:
    国家自然科学基金助课题

ESR STUDY FOR THE INFLUENCE OF THE DISCHARGING TUBE DIAMETER AND MOISTURE CONTENT UPON THE ACTIVE RADICALS PRODUCED IN MICROWAVE DISCHARGE OF FATTY ETHER

Wang Wending1,2, Chen Dewen1,2, Xu Guangzhi1,2   

  1. 1. Institute of Chemistry, Academic Sinica, Beijing;
    2. Beijing Laboratory for Structural Chemistry of Unstable and Stable Species
  • Received:1988-09-12 Revised:1989-01-23 Online:1989-12-05 Published:2018-01-22

摘要: 本文用自旋捕捉技术与ESR相结合方法,系统研究了放电管直径及水含量对低压下脂肪醚气相微波放电分解产生自由基的影响.表明:随着放电管直径减小,放电时碳化现象加重,H·原子寿命变短;含水量加大,碳化剧烈.并根据其放电机理,对以上现象发生的原因进行一定的探讨.

关键词: 自旋捕捉技术, 微波放电, 自由基

Abstract: By means of the spin trapping-ESR technique, the influence of the tube diameters and moisture content in the sample on the radicals produced in the microwave discharge of fatty ether at low pressure has been studied systematically. The results show that:the smaller the diameter of the tube, the faster the formative speed of carbon black, as well as the shorter the lifetime of H atom. With the increase of moisture content, the extent of carbonization becomes more serious. According to the mechanism of discharge, the reasons of the carbonization are discussed.

Key words: Spin trapping, ESR, Microwave discharge, Free radical