水溶液中多酚自氧化动力学

IF 1.7 4区化学 Q3 CHEMISTRY, MULTIDISCIPLINARY

Russian Chemical Bulletin Pub Date : 2025-07-10 DOI:10.1007/s11172-024-4655-2

A. M. Bolotina, K. S. Politov, V. A. Ryabkova, L. I. Borodin, I. V. Tikhonov

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引用次数: 0

摘要

研究了多酚在水溶液中被分子氧氧化时的摄氧动力学。测定了苯酚、氧和氢氧阴离子的部分反应顺序和反应的有效速率常数。随着介质pH值的增加，自氧化速率的增加表明酚类和苯氧基自由基主要以电离形式反应。对苯二酚和邻苯三酚衍生物比儿茶酚衍生物具有更强的自氧化活性。

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Kinetics of autoxidation of polyphenols in an aqueous solution

The kinetics of the oxygen uptake during the oxidation of polyphenols by molecular oxygen in an aqueous solution was studied. The partial reaction orders for phenol, oxygen, and hydroxide anion and effective rate constants of the process were determined. An increase in the autoxidation rate with increasing pH of the medium suggests that phenols and phenoxyl radicals react mainly in the ionized form. Hydroquinones and pyrogallol derivatives are more active in autooxidation than the catechol derivatives.

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来源期刊

Russian Chemical Bulletin 化学-化学综合

CiteScore

2.70

自引率

47.10%

发文量

257

审稿时长

3-8 weeks

期刊介绍： Publishing nearly 500 original articles a year, by leading Scientists from Russia and throughout the world, Russian Chemical Bulletin is a prominent international journal. The coverage of the journal spans practically all areas of fundamental chemical research and is presented in five sections: General and Inorganic Chemistry; Physical Chemistry; Organic Chemistry; Organometallic Chemistry; Chemistry of Natural Compounds and Bioorganic Chemistry.