Role of Free Radicals in Modeling the Iodide Peroxide Reaction Mechanism

被引：36
作者：
Milenkovic, Maja C. [1 ]
Stanisavljev, Dragomir R. [1 ]
机构：
[1] Fac Phys Chem, Belgrade 11158, Serbia
来源：
JOURNAL OF PHYSICAL CHEMISTRY A | 2012年 / 116卷 / 23期
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.
引用
收藏
页码：5541 / 5548
页数：8
相关论文
共 47 条
[1]   KINETIC ASPECTS OF THE BRAY-LIEBHAFSKY OSCILLATORY REACTION [J].
ANIC, S ;
KOLARANIC, LZ .
JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS I, 1988, 84 :3413-3421
[2]  
[Anonymous], 1998, E Z SOLV EG EQ SOLV
[3]  
Ascher U.M., 1998, Computer methods for ordinary differential equations and differential-algebraic equations, V61, DOI DOI 10.1137/1.9781611971392
[4]  
Atkins P. W., 1978, Physical Chemistry
[5]   THE ABSORPTION SPECTRA OF I-2,I-3-,I-, IO3-,S4O6 AND S2O3= HEAT OF THE REACTION I-3-=I-2+I- [J].
AWTREY, AD ;
CONNICK, RE .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1951, 73 (04) :1842-1843
[6]   ACID DISSOCIATION CONSTANT AND DECAY KINETICS OF PERHYDROXYL RADICAL [J].
BEHAR, D ;
CZAPSKI, G ;
RABANI, J ;
DORFMAN, LM ;
SCHWARZ, HA .
JOURNAL OF PHYSICAL CHEMISTRY, 1970, 74 (17) :3209-&
[7]   TIME-RESOLVED REACTION OF O-2(1-DELTA) WITH I- IN AQUEOUS-SOLUTION [J].
BRAATHEN, G ;
CHOU, PT ;
FREI, H .
JOURNAL OF PHYSICAL CHEMISTRY, 1988, 92 (23) :6610-6615
[8]   A periodic reaction in homogeneous solution and its relation to catalysis. [J].
Bray, WC .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1921, 43 :1262-1267
[9]  
BRAY WC, 1931, J AM CHEM SOC, V53, P38, DOI DOI 10.1021/JA01352A006
[10]   UPTAKE AND METABOLISM OF IODINE IS CRUCIAL FOR THE DEVELOPMENT OF THYROIDITIS IN OBESE STRAIN CHICKENS [J].
BROWN, TR ;
SUNDICK, RS ;
DHAR, A ;
SHETH, D ;
BAGCHI, N .
JOURNAL OF CLINICAL INVESTIGATION, 1991, 88 (01) :106-111
12345