| 2,6-二氯苯甲腈的合成 |
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| 引用本文： | 刘瑞祥,于钟深. 2,6-二氯苯甲腈的合成[J]. 化学工业与工程, 2004, 21(2): 87-90 |
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| 作者姓名： | 刘瑞祥 于钟深 |
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| 作者单位： | 大连化工研究设计院,大连化工研究设计院 辽宁大连116023 ,辽宁大连116023 |
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| 摘 要： | 本文详细研究了用重氮化方法制备2,6-二氯苯甲腈的方法,分别考察了硫酸与醋酸配比、氰化介质酸碱性、氰代分解温度对收率的影响,并对废水处理进行了考察。确定了n(硫酸)∶n(醋酸)=3 4∶1～1∶1之间,氰代温度50℃,氰代反应介质pH值7～9的最佳条件,同时找到了一条处理含氰络合物废水的方法,使CuCN循环,而且处理后废水低于国家排放标准。
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| 关 键 词： | 2 6-二氯苯甲腈 2 6-二氯苯胺 重氮化 |
| 文章编号： | 1004-9533(2004)02-0087-04 |
| 修稿时间： | 2003-03-04 |
Synthesis of 2,6-Dichlorobenzonitrile |
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| LIU Rui-xiang,YU Zhong-shen. Synthesis of 2,6-Dichlorobenzonitrile[J]. Chemical Industry and Engineering, 2004, 21(2): 87-90 |
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| Authors: | LIU Rui-xiang YU Zhong-shen |
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| Affiliation: | (Dalian Institute of Research and Design of Chemical Industry,Liaoning Dalian 116023,China |
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| Abstract: | 2,6-Dichlorobenzonitrile was synthesized from 2,6-dichloroaniline by diazo reaction.Effects of reaction temperature,ratio of H_2SO_4 to CH_3COOH and pH value on the yield and purity of product were studied.The highest yield of 2,6-dichlorobenzonitrile was obtained under the conditions that n(H_2SO_4)∶n(CH_3COOH)=34∶1～1∶1,reaction temperature was 50℃ and the pH was between 7～9.After processed,the quality of cyanide waste-water was up to the emission standard. |
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| Keywords: | 2 6-dichlorobenzonitrile 2 6-dichloroaniline sandmeyer diazo reaction |
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