| 烷烃条件下CF2ClBr的紫外光解离机理研究 |
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| 引用本文： | 王淑惠,于勇,张振满,潘循皙,侯惠奇.烷烃条件下CF2ClBr的紫外光解离机理研究[J].环境科学,1998,19(4):5-8. |
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| 作者姓名： | 王淑惠 于勇 张振满 潘循皙 侯惠奇 |
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| 作者单位： | 复旦大学环境科学研究所 |
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| 摘 要： | 以气相色谱、红外光谱为主要分析手段，对气态ＣＦ２ＣｌＢｒ在ＣＲ２ＣｌＢｒ－Ｃ６Ｈ１２体系中的紫外光解离进行了研究，结果表明，在２５３．７ｎｍ紫外光照射下，该体系的主要光解产物为ＨＣＶＦ２Ｃｌ、ＨＢｒ以及Ｃ６Ｈ１２的聚合物，体系中ＣＦ２ＣｌＢｒ的解离近似精同缀反应，解离反应的速率常数为２．８７７×１０＾－６ｓ＾－１表观量子产率约０．１，基于此，对该光解反应的机理做了分析。
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| 关 键 词： | 紫外光 光解离 大气化学 烷烃条件 环境污染 |
| 收稿时间： | 1997/11/15 0:00:00 |
UV Photo-dissociation Mechanism of CF2ClBr with Cyclohexane |
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| Wang Shuhui,Yu Yong,Zhang Zhenman,Pan Xunxi and Hou Huiqi.UV Photo-dissociation Mechanism of CF2ClBr with Cyclohexane[J].Chinese Journal of Environmental Science,1998,19(4):5-8. |
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| Authors: | Wang Shuhui Yu Yong Zhang Zhenman Pan Xunxi and Hou Huiqi |
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| Institution: | Institute of Environmental Science, Fudan University, Shanghai 200433;Institute of Environmental Science, Fudan University, Shanghai 200433;Institute of Environmental Science, Fudan University, Shanghai 200433;Institute of Environmental Science, Fudan University, Shanghai 200433;Institute of Environmental Science, Fudan University, Shanghai 200433 |
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| Abstract: | The paper studied the photo-dissociation of gas state CF2ClBr in the system of CF2ClBr-C6H12 with Gas Chromatography and FT-IR spectra as the main analysis method.The results showed that the system gives main products as HCF2Cl,HBr and C6H11(C6H10)nC6H11 under the 253.7nm UV light.The dissociation of CF2ClBr in this system is about one order and the corresponding rate constant is 2.877×10-6s-1.The apparent quantum yield of CF2ClBr is about 0.1.Based on these results,the photo dissociation mechanism of this system was analyzed. |
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| Keywords: | CF2ClBr C6H12 253 7nm UV light photo-dissociation atmospheric chemistry |
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