Palladium(II) inhibition during cerium(IV) oxidation of aldoses: A kinetic study

被引：8
|
作者：
Gupta, M [1 ]
Upadhyay, SK [1 ]
机构：
[1] HARCOURT BUTLER TECHNOL INST,DEPT CHEM,KANPUR 208002,UTTAR PRADESH,INDIA
来源：
TRANSITION METAL CHEMISTRY | 1996年 / 21卷 / 03期
关键词：
D O I：
10.1007/BF00165981
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The kinetics of oxidation of aldoses, namely xylose, arabinose, galactose and glucose, by Ce-IV have been studied in HClO4 + H2SO4 medium and in the presence of Pd-II The reactions exhibit a first order rate dependence with respect to oxidant. The rate is inversely dependent on the [HSO4-]:[H+] ratio. The order of reaction with respect to aldose decreases at higher [aldose]. Due to the formation of a complex between Ce-IV and Pd-II, a retarding effect of [Pd-II] on the rate of disappearance of [Ce-IV] has been observed. A mechanism consistent with the observed kinetic data is proposed.
引用
收藏
页码：266 / 269
页数：4
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