| 二甲基硫醚光解及二甲基二硫醚生成速率研究 |
| 摘要点击 1842 全文点击 1784 投稿时间：1994-02-28 |
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| 中文关键词 光解 二甲基硫醚 二甲基二硫醚 生成常数 |
| 英文关键词 dimethyl sulfide photolysis rate constant of reaction |
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| 中文摘要 |
| 用低压汞灯照射二甲基硫醚(DMS),在20m的长光池中用富里叶红外光谱仪测量其光解产物,结果表明二甲基硫醚光解生成二甲基二硫醚(DMDS)和乙烷。测量其不同光照时间的光解产物,结果表明In c0/c-l在直角坐标上是一条直线,说明了二甲基二硫醚生成按一级反应进行,其生成的速率常数为8.70×10-5s-1.用低压汞灯照射DMS+H2O2体系,富里叶红外光谱检测其产物,在有足够的H2O2情况下,生成了CH2O和CH3SO3.在辐照DMS+NO体系时,富里叶红外光谱仪检测产物为CH3SSCH3,C2H6和CH3SNO,探讨了其反应机理。 |
| 英文摘要 |
| Dimethyl sulfide (DMS) was irradiated with a low pressure mercury lamp and then the photolytic products were defected with a Fourier transform infrared spectroscope in a long path cell of 20m at different times. The results show that dimethyl sulfide was photolyzed to form dimethyl disulfide and ethane by following a first order reaction,with a rate constant of 8.70×10-5s-1 for the formation of dimethyl disulfide. A system of DMS+H2O2 and a system of DMS+NO were also studied by using the same method. It was found that in the presence of sufficient H2O2,DMS was photolyzed to form CH2O and CH3SO3H. In the case of DMS+ NO, the photolytic products were CH3SSCH3, C2H6 and CH3SNO. |
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