| 异构反应-分子蒸馏分离合成O,S-二甲基硫代磷酰胺 |
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| 引用本文： | 艾秋红,龚书斌,殷宏,薛光才. 异构反应-分子蒸馏分离合成O,S-二甲基硫代磷酰胺[J]. 精细化工, 2008, 25(4): 351-354 |
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| 作者姓名： | 艾秋红 龚书斌 殷宏 薛光才 |
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| 作者单位： | 湘潭大学,化工学院,化工系,湖南,湘潭,411105;湖北沙隆达股份有限公司,湖北,荆州,434001 |
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| 摘 要： | 对O,O-二甲基硫代磷酰胺催化异构-分子蒸馏合成O,S-二甲基硫代磷酰胺的工艺进行了研究。得到了异构反应-分子蒸馏分离的优化工艺条件:反应温度40~50℃,反应时间3 h,蒸馏温度90~100℃,操作压力20~40 Pa。10 t/a中试装置运行表明:将分子蒸馏分离得到的原料重新异构得到O,S-二甲基硫代磷酰胺的质量分数与总收率分别为92.8%、94.2%。
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| 关 键 词： | O O-二甲基硫代磷酰胺 S-二甲基硫代磷酰胺 分子蒸馏 分离 |
| 文章编号： | 1003-5214(2008)04-0351-04 |
| 修稿时间： | 2007-01-21 |
Synthesis of O,S-Dimethylphosphoroamidothioate by Isomerization and Molecular Distillation Separation |
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| AI Qiu-hong,GONG Shu-bin,YIN Hong,XUE Guang-cai. Synthesis of O,S-Dimethylphosphoroamidothioate by Isomerization and Molecular Distillation Separation[J]. Fine Chemicals, 2008, 25(4): 351-354 |
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| Authors: | AI Qiu-hong GONG Shu-bin YIN Hong XUE Guang-cai |
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| Abstract: | The technology of catalytic isomerization of O,O-dimethylphosphoroamidothioate to O,S-dimethylphosphoroamidothioate and separation of the product by molecular distillation was studied.The optimal technological conditions are:reaction temperature 40～50 ℃,reaction time 3 h,distillation temperature 90～100 ℃ and distillation pressure 20～40 Pa.The pilot-scale result of 10 t/a indicated that the mass fraction of O,S-dimethylphosphoroamidothioate is 92.8% and the total yield is above 94.2% when the separated O,O-dimethylphosphoroamidothioate is reused. |
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| Keywords: | O,O-dimethylphosphoroamidothioate O,S-dimethyl phosphoroamidothioate molecular distillation separation |
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