| CF2ClBr在短紫外光照射下光解离过程的研究 |
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| 引用本文： | 段杨,郑志坚,李长林,侯惠奇,朱绍龙,周伟.CF2ClBr在短紫外光照射下光解离过程的研究[J].环境科学,1996,17(6):24-26. |
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| 作者姓名： | 段杨 郑志坚 李长林 侯惠奇 朱绍龙 周伟 |
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| 作者单位： | 复旦大学环境科学研究所，复旦大学电光源研究所 |
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| 摘 要： | 以低压汞为激发光源，气相色谱和红外光谱为主要分析手段，研究了气态ＣＦ２ＣｌＢｒ在１８５ｎｍ紫外光照射下的光解离过程及其人在Ｏ２存在下的光氧化机理，发现ＣＦ２ＣｌＢｒ在１８５ｎｍ紫外光照射下的主要产物ＣＦ２Ｂｒ２ＣＦ２Ｃｌ２和Ｃｌ２，Ｂｒ２，而当Ｏ２存在时，主要光解产物为ＣＦ２Ｏ，在本实验条件下，纯ＣＦ２ＣｌＢｒ极限分解率约为２６％，在ＣＦ２ＣｌＢｒ－Ｏ２体系中，ＣＦ２ＣｌＢｒ的解离为一级反应，速率
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| 关 键 词： | CF2ClBr 光氧化 光解离 紫外光 氧气 气相色谱 |
| 收稿时间： | 3/9/1996 12:00:00 AM |
Photodlssociation of CF2ClBr at 185 nm of.Ultraviolet Radiation |
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| Duan Yang,Zhu Shaolong.Photodlssociation of CF2ClBr at 185 nm of.Ultraviolet Radiation[J].Chinese Journal of Environmental Science,1996,17(6):24-26. |
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| Authors: | Duan Yang Zhu Shaolong |
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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 Electric Light Sources, Fudan University, Shanghai 200433;Institute of Electric Light Sources, Fudan University, Shanghai 200433 |
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| Abstract: | The Photodissociation of CF2ClBr and its photooxidation at the existence of O2 at 185 urn of ultraviolet radiation were studied using low pressure mercury lamp.The results showed that the dissociation of pure CF2ClBr at 185 urn of ultraviolet radiation is a balance reaction, and the ultimate dissociation rate is about 26%.The dissociation of CF2ClBr is a first order reaction and the rate constantis 1.70×10-3 s-1 at the echtence of O2.The dissociation procedure of CF2ClBr at 185 urn of ultraviolet radiation and the mechanism of its photoreaction with O2 was discued. |
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| Keywords: | CF_2ClBr photodissociation photooxidation |
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