MECHANISTIC INVESTIGATION OF OXIDATION OF KETONES BY CERIUM(IV) SULPHATE IN AQUEOUS SULPHURIC ACID MEDIUM CATALYSED BY IRIDIUM(III) CHLORIDE

被引：0
|
作者：
Gupta, A. [1 ]
Singh, M. K. [1 ]
Singh, H. S. [1 ]
机构：
[1] Univ Allahabad, CMP Coll, Dept Chem, Allahabad 211002, Uttar Pradesh, India
来源：
OXIDATION COMMUNICATIONS | 2011年 / 34卷 / 03期
关键词：
oxidation; mechanistic; iridium(III) chloride; ketones; OSMIUM-TETROXIDE; ALKALINE-MEDIUM; KINETICS; COMPLEXES; AQUATION; ANATION; ION;
D O I：
暂无
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Homogeneous catalysis of the oxidation of pentanone-3 and 4-methylpentanone-2 by cerium(IV) sulphate has been investigated in aqueous sulphuric acid medium. The reaction rate exhibitc zero order kinetics with respect to cerium(IV) sulphate and first order kinetics with respect to pentanone-3 and 4-methylpentanone-2. The rate of the reaction follows linear dependence on hydrogen ions at low concentrations of sulphuric acid and inversely proportional to the square of hydrogen ion at higher concentrations of sulphuric acid. The reaction rate follows first order kinetics with respect to iridium(III) chloride. The rate constants and activation parameters have been calculated. The suitable mechanistic steps and rate expression consistent with the observed kinetic data are suggested.
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页码：595 / 603
页数：9
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