Kinetics and Mechanism of Ruthenium(III) Catalyzed Oxidation of Butanone and Uncatalyzed Oxidation of Cychlohexanone by Cerium(IV) in Acid Sulphate Medium

被引：2
|
作者：
Sharma, Priyamvada [1 ]
Hemkar, Shalini [1 ]
Khandelwal, C. L. [1 ]
Sharma, P. D. [1 ]
机构：
[1] Univ Rajasthan, Dept Chem, Jaipur 302004, India
来源：
JOURNAL OF THE KOREAN CHEMICAL SOCIETY-DAEHAN HWAHAK HOE JEE | 2012年 / 56卷 / 01期
关键词：
Kinetics; Ruthenium(III); Oxidation; Ketones; Cerium(IV);
D O I：
10.5012/jkcs.2012.56.1.028
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The kinetics of ruthenium(III) chloride catalyzed oxidation of butanone and uncatalyzed oxidation of cyclohexanone by cerium(IV) in sulphuric acid medium have been studied. The kinetic rate law(I) in case of butanone conforms to the proposed mechanism. -1/2 D[Ce-IV]/dt = kK[Ru-III][butanone]/1+K[butanone] (1) However, oxidation of cyclohexanone in absence of catalyst accounts for the rate eqn. (2). -1/2 D[Ce-IV]/dt = (k(1)+k(1)K'[H+])[Ce-IV][Cyclohexanone]/1+K-3[HSO4-] (2) Kinetics and activation parameters have been evaluated conventionally. Kinetically preferred mode of reaction is via ketonic and not the enolic forms.
引用
收藏
页码：28 / 33
页数：6
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