THE SYNERGISTIC EFFECT OF MANGANESE(II) IN THE SULFITE-INDUCED AUTOXIDATION OF METAL-IONS AND COMPLEXES IN AQUEOUS-SOLUTION

被引：46
|
作者：
COICHEV, N [1 ]
REDDY, KB [1 ]
VANELDIK, R [1 ]
机构：
[1] UNIV WITTEN HERDECKE,INST INORGAN CHEM,STOCKUMER STR 10,W-5810 WITTEN,GERMANY
来源：
ATMOSPHERIC ENVIRONMENT PART A-GENERAL TOPICS | 1992年 / 26卷 / 13期
基金：
巴西圣保罗研究基金会;
关键词：
AUTOXIDATION OF CO(II); AUTOXIDATION OF FE(II); SYNERGISTIC EFFECT OF MN(II); KINETICS AND MECHANISM; SULFITE-INDUCED AUTOXIDATION;
D O I：
10.1016/0960-1686(92)90360-W
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The synergistic effect of Mn(II) in the sulfite-induced autoxidation of metal ions was investigated for the Co(II)-azide system and the aquated Fe(II) system. The results indicate that Mn(II) has a significant catalytic effect, but the synergistic effect actually occurs in the presence of Co(III) and Fe(III), respectively. It is suggested that these metal ions can oxidize Mn(II) to Mn(III) under the selected experimental conditions, which rapidly oxidizes sulfite to SO3- radicals to initiate the catalytic cycle. The results of this study are of direct importance to account for synergistic effects observed in metal-catalysed autoxidation reactions of sulfur(IV)-oxides.
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页码：2295 / 2300
页数：6
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