| CF2ClBr在短紫外光照射下光解离过程的研究 |
| 摘要点击 628 全文点击 918 投稿时间：1996-03-09 |
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| 中文关键词 CF2ClBr 光氧化 光解离 |
| 英文关键词 CF2ClBr photodissociation photooxidation |
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| 中文摘要 |
| 以低压汞灯为激发光源,气相色谱和红外光谱为主要分析手段,研究了气态CF2ClBr在185um紫外光照射下的光解高过程及其在O2存在下的光氧化机理。发现CF2ClBr在185um紫外光照射下的主要产物为CF2Br2、CF2Cl2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,速率常数K=1.70×10-3s-1.讨论了在185nm紫外光照射下CF2ClBr的解离过程及其与O2的光化学反应机理。 |
| 英文摘要 |
| 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. |
