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20093178金虫 (小有名气)
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本文对由环己醇制备己二酸的传统实验方法进行了改良，用 84％硝酸替代高锰酸钾作氧化剂，以硝酸、环己醇6：1的 摩尔投料比，在80℃水浴下搅拌氧化30分钟，使制备操作 时间由5h缩短至2h,己二酸产率由30％提高至83％， 避免了高锰酸钾法中大量废渣后处理的麻烦，在一定程度上 减小了制备实验对环境的污染，符合绿色化学设计的要求。 |
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crazyofmj899
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20093178(金币+6,VIP+0): 11-26 18:46
20093178(金币+6,VIP+0): 11-26 18:46
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An improvement of the traditional method for the preparation of adipic acid from cyclohexanol was reported in this paper. In stead of KMnO4, 84%KNO3 was used as the oxidant. The feed ratio of HNO3 and cyclohexanol was 6:1 (mole/mole). The oxidation was performed at 80℃ with stirring in a water bath for 30min. The improvements shortened the operation time from 5h to 2h, increased the acid yield from 30% to 83%, and avoided the post-treatment of huge amount of residues produced by the KMnO4 method. So to some extent, the new method alleviated pollutions to the environment, qualifying the claims of green chemical design. [ Last edited by crazyofmj899 on 2009-11-26 at 11:05 ] |
2楼2009-11-26 11:04:34
xiaofee
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3楼2009-11-26 11:12:58
zcy86520
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20093178(金币+4,VIP+0): 11-26 18:46
20093178(金币+4,VIP+0): 11-26 18:46
| In this paper, preparation of adipic acid from cyclohexanol the traditional experimental method has been improved, with 84% nitric acid substitution of potassium permanganate as oxidant, to nitric acid, cyclohexanol 6:1 molar feed ratio, under stirring at 80 ℃ water bath Oxidation of 30 minutes, so prepare to shorten operating time from 5h to 2h, adipic acid production rate from 30% to 83% of the potassium permanganate method to avoid post-processing large quantities of waste residue of trouble, to a certain extent, reduced the preparation of experiment on the environment pollution, in line with the design requirements of green chemistry. |
4楼2009-11-26 16:57:27