| 正戊烷与SO2气相光化学反应自由基机理的ESR验证 |
| |
| 引用本文： | 徐自力,尚静,刘春明,杜尧国,王玲,郭海忱,董凤霞,李文艳.正戊烷与SO2气相光化学反应自由基机理的ESR验证[J].高等学校化学学报,1999,20(9):1455-1457. |
| |
| 作者姓名： | 徐自力 尚静 刘春明 杜尧国 王玲 郭海忱 董凤霞 李文艳 |
| |
| 作者单位： | 1. 吉林大学环境科学系,长春,130023
2. 吉林大学分析测试中心,长春,130023 |
| |
| 基金项目： | 国家自然科学基金;29177272; |
| |
| 摘 要： | 烷烃与SO2的气相光化学作用为自由基反应1].Penzhorn等2]对C4以下的气相烷烃与SO2光化学反应产物的复杂性和多样性进行了推测,此后对该光化学反应机理的研究均以反应产物(特别是凝聚态产物)为基础进行的3].为验证烷烃与SO2光化学反应体系中确实存在自由基,Makarov等4]向正戊烷与SOz光化学反应体系中引入NO,通过对反应起始阶段的产物的光谱分析和反应动力学研究,论证了该反应的自由基过程.ESR技术是检测自由基的有效方法,Stokes等5]利用自旋捕集-ESR技术成功地测得了气相羟基自由基的存在.
|
| 关 键 词： | 自旋捕集 光化学反应 正戊烷 |
A Verification of Free Radical Mechanism in the Photochemical Reaction of n-Pentane Sulfur Dioxide by ESR |
| |
| XU Zi-li,SHANG Jing,LIU Chun-Ming,DU Yao-guo,WANG Ling,GUO Hai-Chen,DONG Feng-xia,LI Wen-yan.A Verification of Free Radical Mechanism in the Photochemical Reaction of n-Pentane Sulfur Dioxide by ESR[J].Chemical Research In Chinese Universities,1999,20(9):1455-1457. |
| |
| Authors: | XU Zi-li SHANG Jing LIU Chun-Ming DU Yao-guo WANG Ling GUO Hai-Chen DONG Feng-xia LI Wen-yan |
| |
| Abstract: | The gaseous photochemical reaction of n-pentane and sulfur dioxide was studied.A series of gaseous products such as alcohols, ketones, acids, esters and inorganic compound were identified by GC/MS and GC. According to the characters of the compounds and the free radical theory, the free radical mechanism of this gaseous photochemical reaction was suggested. The free radical mechanism was verified directly by means of the gaseous free radicals measured by spin trapping-ESR methods in which PBN was selected as the spintrap. |
| |
| Keywords: | ESR SO2 |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
