| 溴代烷烃光氧化的研究 |
| 摘要点击 896 全文点击 985 投稿时间：1995-03-20 |
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| 中文关键词 光氧化反应 OH自由基 溴代烷烃 |
| 英文关键词 photochemical oxidation OH radical brominated alkanes |
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| 中文摘要 |
| 本文模拟大气条件,研究了CH3Br+H2O2+O2,CH3Br+O2,CHBr3+H2O2+O2,和CHBr3+O2 4个体系的光化学反应。这些体系在253.7nm的紫外光照射下H2O2产生了OH自由基,OH自由基与CH3Br和CHBr3反应,在20m的长光程气体池中用FTIR测量这些反应产物,发现在CH3Br+H2O2+O2和CH3Br+O2体系其光化学反应产物为CO,CO2,CH2O和H2O,对CHBr3+H2O2+O2其光化学反应产物为CO,CO2和H2O,对CHBr3+O2其光化学反应产物为CO和CO2,并从这些产物推出可能发生的光化学反应。 |
| 英文摘要 |
| Under simulated atmospheric conditions,the photochemical reactions were studied in the foursystems of CH3Br+H2O2+O2,CH3Br+O2,CHBr3+H2O2+O2,and CHBr3+O2.Irradiated by UV at 253.7 urn,H2O2 in these systems was decomposed to give OH radical which then reacted with CH3Br and CHBr3.The products of these reactions were determinated with a Fourier Transform infrared Spectroscopy in a 20m long path cell. As the prodllcts of photochemical reactions,CO,CO2,CH2O and H2O were detected in both systems of CH3Br+H2O2+O2 and CH2Br+O2,CO,CO2 and H2O were detected in the system of CHBr3+H2O2 +O2; and CO and CO2 wrer detected in the system of CHBr3+O2.Based on these products,the photochemical reactions which possibly occurred were suggested and reasonable explanations were given. |
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