A KINETIC APPROACH FOR THE MECHANISM OF MALACHITE GREEN-PEROXYDISULFATE REACTION IN AQUEOUS-SOLUTION

被引：13

作者：

MUSHINGA, T ^{[1
]}

JONNALAGADDA, SB ^{[1
]}

机构：

[1] UNIV ZIMBABWE, DEPT CHEM, HARARE, ZIMBABWE

来源：

INTERNATIONAL JOURNAL OF CHEMICAL KINETICS | 1992年 / 24卷 / 01期

关键词：

D O I：

10.1002/kin.550240106

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 oxidation kinetics of malachite green (MG) with peroxydisulphate ion (PDS) were investigated by monitoring the absorbance change at 618 nm, in aqueous solutions under buffered and unbuffered conditions. Under both conditions, the reaction had first order dependence on reductant and a fractional order (one half) dependence on the oxidant. The stoichiometric ratio between MG and PDS was 1:2. The reaction had a negative salt effect. Reaction rates were enhanced under both high or low pH relative to neutral conditions. A plausible mechanism is proposed.

引用

页码：41 / 49

页数：9

共 22 条

[1] SILVER ION CATALYZED OXIDATION OF PRIMARY ALIPHATIC-AMINES BY POTASSIUM PEROXYDISULFATE - KINETIC STUDY [J].