The kinetics and mechanism of the oxidation of phenylthioacetic acid and thiodiglycolic acid by potassium ferrate

被引：0
|
作者：
Read, JF [1 ]
Griffiths, BHB [1 ]
Lynch, LL [1 ]
Maccormick, KJ [1 ]
Tam, NC [1 ]
机构：
[1] Mt Allison Univ, Dept Chem, Sackville, NB E4L 1G8, Canada
来源：
INORGANIC REACTION MECHANISMS | 2004年 / 5卷 / 02期
关键词：
kinetics and mechanism; potassium ferrate; thiodiglycolic acid; phenylthioacetic acid;
D O I：
暂无
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The kinetics and mechanism of the oxidation of phenylthioacetic acid and thiodiglycolic acid by potassium ferrate were investigated under pseudo and non pseudo first-order conditions. Phenylthioacetic acid was oxidized to the sulfone and Fe(II) within 300s and thiodiglycolic acid was oxidized to the sulfoxide and Fe(III) within 1000s. Above a pH value of 8.7 for phenylthioacetic acid and 8.3 for thiodiglycolic acid the kinetics were first-order in the concentration of the hydrogen ions, the organosulfur compound and the ferrate ions, whereas below these pH values the kinetics were independent of the hydrogen ion concentration. A possible mechanism involves reaction between protonated ferrate and the organosulfur compound as the rate-determining step with a rate constant of 35 M(-1)s(-1). These results are comparable with other similar compounds.
引用
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页码：135 / 150
页数：16
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