[1]吴志坚,黄理耀,林岩心,等.二高碘酸合铜(Ⅲ)配离子氧化乙醇的动力学及机理[J].华侨大学学报(自然科学版),2000,21(1):34-39.[doi:10.3969/j.issn.1000-5013.2000.01.008]
　Wu Zhijian,Huang Liyao,Lin Yanxin,et al.Kinetics and Mechanism of Oxidation of Ethanol by Diperiodatocuprate(Ⅲ)[J].Journal of Huaqiao University(Natural Science),2000,21(1):34-39.[doi:10.3969/j.issn.1000-5013.2000.01.008]
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二高碘酸合铜(Ⅲ)配离子氧化乙醇的动力学及机理()
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《华侨大学学报（自然科学版）》[ISSN:1000-5013/CN:35-1079/N]

卷:
第21卷
期数:
2000年第1期
页码:
34-39
栏目:
出版日期:
2000-01-20

文章信息/Info

Title:
Kinetics and Mechanism of Oxidation of Ethanol by Diperiodatocuprate(Ⅲ)
文章编号:
1000-5013(2000)01-0034-06
作者:
吴志坚; 黄理耀; 林岩心; 王琼
华侨大学化工学院, 泉州362011
Author(s):
Wu Zhijian;  Huang Liyao;  Lin Yanxin;  Wang Qiong
College of Chem. Eng., Huaqiao Univ., 362011, Quanzhou
关键词:
二高碘酸合铜(Ⅲ)配离子;  氧化;  乙醇;  动力学
Keywords:
diperiodatocuprate(Ⅲ);  oxidation;  ethanol;  kinetics
分类号:
O643.12
DOI:
10.3969/j.issn.1000-5013.2000.01.008
摘要:
研究水溶液中二高碘酸合铜 (Ⅲ)配离子 (DPC)的稳定性,以及水溶液中 DPC对乙醇的氧化机理 .考察乙醇浓度、高碘酸根浓度、氢氧化钾浓度、离子强度和温度等对 DPC氧化乙醇的影响 .结果表明,在采用的具体实验条件下,反应对 DPC为一级,准一级速率常数 kobs与乙醇浓度有良好的线性关系 .kobs随着高碘酸根浓度的增大而减小,随着 KOH浓度的增大而增大; kobs的倒数与KOH浓度的倒数也有良好的线性关系,而离子强度对反应速率影响不大 .同时,根据温度对反应速率的影响,估算反应的活化能 .通过对实验结果的综合分析,提出 DPC氧化乙醇的机理,对机理进行详细的讨论 .
Abstract:
A study is made on the stability of diperiodatocuprate(Ⅲ),or DPC for short,in aqueous solution and on the mechanism of the oxidation of ethanol by DPC in aqueous solution.An inspection of factors influencing oxidation of ethanol by DPC covers ethanol concentration,periodate concentration,KOH concentration,ionic strength,and temperature.As shown by the results,under experimental conditions given above,oxidation reaction is in first order or quasi first order dependence on DPC.There is a good linear relationship between speed onstant k obs and ethanol concentration. k obs decreases with the increase of periodate concentration; and increases with the increase of KOH concentration.There is also a good linear relationship between the reciprocal of k obs and the reciprocal of KOH concentration.Ionic strength shows not very great effect on reaction rate.The activation energy of oxidation reaction is estimated in the light of the effect of temperature on reaction rate.By comprehensive analysis of experimental results,the mechanism of oxidation of ethanol by DPC is referred to and discussed in detail.

参考文献/References:

[1] Movius W G. Oxidation of alcohols by diperiodatocuptate(Ⅲ) [J]. Inorganic Chemistry, 1973.31-33.doi:10.1021/ic50119a008.
[2] Panigriki G P, Pathy A C. Kinetics and mechanism of oxidation of methyl ethyl ketone and cyclohexanone by potassium bis(tellurato)cuprate(Ⅲ) [J]. Inorganic Chemistry, 1984.2133-2138.doi:10.1021/ic00182a029.
[3] 王安周, 石铁生. 碱性介质中二高碘酸合铜(Ⅲ)配离子氧化四氢糠醇的动力学和机理 [J]. 化学学报, 1988.207-211.
[4] Dean J A. Lange′s handbook of chemistry [M]. New York:McGraw-Hill Book Company, 1978.5-16.

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更新日期/Last Update: 2014-03-23