Kinetics of the oxidation of iodine by hydrogen peroxide catalyzed by MoO42- ions

被引：13

作者：

Melichercik, M ^{[1
]}

Olexova, A ^{[1
]}

Treindl, L ^{[1
]}

机构：

[1] Comenius Univ, Dept Phys Chem, Bratislava 84215, Slovakia

来源：

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 1997年 / 127卷 / 1-3期

关键词：

iodine oxidation by hydrogen peroxide; catalysis by molybdates; 'clock' behaviour;

D O I：

10.1016/S1381-1169(97)00123-4

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The kinetics of the oxidation of iodine by hydrogen peroxide catalyzed by MoO42- ions with a 'clock' behaviour is described and the corresponding reaction scheme is proposed. The 'clock' behaviour is explained by the assumption that the oxidation of iodine cannot proceed until the iodide concentration drops to a certain treshold, since this reaction can only through the HOI species proceed. The noncatalyzed, direct oxidation of iodine by H2O2 is too slow to become one of the main two processes of the Bray-Liebhafsky oscillatory reaction. (C) 1997 Elsevier Science B.V.

引用

页码：43 / 47

页数：5

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