| DECP在纳米TiO2上气-固相光催化的FT-IR和GC-MS研究 |
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| 引用本文： | 张建宏,郭楠,习海玲.DECP在纳米TiO2上气-固相光催化的FT-IR和GC-MS研究[J].分子催化,2007,21(6):585-589. |
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| 作者姓名： | 张建宏 郭楠 习海玲 |
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| 作者单位： | 防化研究院,北京,102205 |
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| 基金项目： | 国家自然科学基金资助项目(20473113) |
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| 摘 要： | 沙林(Sarin,甲氟膦酸异丙酯)是一种剧毒的神经性毒剂1,2],曾是广泛使用的化学战剂之一.为应对削减化学武器的新技术要求和日益严峻的反恐形势,发展新型的化学毒剂消除方法已经成为研究的热点.传统消毒剂中通常含有强氧化剂、强碱、活性氯等成份,有时还需使用有机溶剂和表面活性剂,这些成分具有较强的腐蚀性,对环境也会造成污染,而且只能将毒剂转化为低毒的产物,无法将其彻底分解1].光化学方法由于反应条件温和、对环境无污染、反应彻底等特点而备受重视.已有的研究表明,光催化反应能把各种有毒、有害化学物质降解至无毒,甚至能将其彻底氧…
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| 关 键 词： | 气-固相光催化 二氧化钛 氯磷酸二乙酯(DECP) FT-IR GC-MS |
| 文章编号： | 1001-3555（2007）06-0585-05 |
| 收稿时间： | 2007-07-26 |
| 修稿时间： | 2007-10-26 |
FT-IR and GC-MS Study on the Gas Solid Phase Photocatalysis of DECP over Nano-TiO2 |
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| ZHANG Jian-hong,GUO Nan,XI Hai-ling.FT-IR and GC-MS Study on the Gas Solid Phase Photocatalysis of DECP over Nano-TiO2[J].Journal of Molecular Catalysis (China),2007,21(6):585-589. |
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| Authors: | ZHANG Jian-hong GUO Nan XI Hai-ling |
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| Abstract: | FT-IR spectroscopy online was used to investigate DECP(Diethyl chlorophosphite)degraded by photocatalytic oxidation on nano-TiO2(P25).GC-MS spectrograph was used to analyze the products.It is possible to predict the mechanism of gas-solid phase photocatalytic degradation of DECP.The reaction may be take place by follow pathway:electron-hole couple was produced in illuminated TiO2 by UV irradiated,and the couple evoke reactions with DECP,H2O,-OH to produce various radicals.DECP can be degraded to inorganic compounds by the chain-reaction of radicals.The products include CO2,H2O,CO,HCl,et al.The chain-reaction will be terminated when radicals vanish,and the intermediates were produced,such as methane,alcohol,ethanal,DEHP(Diethyl hydroxyphosphonate),DEP(Diethyl phosphate),TEP(Triethyl phosphate),et al. |
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| Keywords: | Gas-solid phase photocatalysis Titanium dioxide Diethyl chlorophosphite(DECP) FT-IR GC-MS |
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