Role of Free Radicals in Modeling the Iodide Peroxide Reaction Mechanism

被引:35
作者
Milenkovic, Maja C. [1 ]
Stanisavljev, Dragomir R. [1 ]
机构
[1] Fac Phys Chem, Belgrade 11158, Serbia
关键词
HYDROGEN-PEROXIDE; RADIATION-CHEMISTRY; RATE CONSTANTS; KINETICS; OXIDATION; DECOMPOSITION; BROMINE; DECAY; ACID; I2;
D O I
10.1021/jp303732u
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 mechanism of monotonous decomposition of hydrogen peroxide by iodide in acidic medium is investigated at room temperature. For this purpose, O-2 pressure, I-, I-2, and I-3(-) concentrations are simultaneously monitored, establishing a useful framework for better understanding of the reaction mechanism and testing various models. The possibility of nonradical and radical approaches to describe experimental data is examined. Results suggest that the best description of experimentally recorded components is obtained by introducing free radicals into the model of the reaction.
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页码:5541 / 5548
页数:8
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