Autoxidation of gentisic acid in aqueous media
Autoxidation of gentisic acid in aqueous media
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DOI：
10.1016/0043-1354(95)00287-1
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发表时间：
1996-05-01
期刊：
影响因子：
12.8
通讯作者：
Catteau, JP
中科院分区：
文献类型：
--
作者：
Capelle, S;Pellegrini, S;Catteau, JP
研究了龙胆酸的氧化行为，并以此为基础合成了腐植酸模型。电化学研究结合电子自旋共振分析揭示了机理的复杂性。两个电子氧化后发生了偶联化学反应，生成了三羟基苯甲酸和二聚体化合物。亚甲基的存在，对模仿天然腐殖质的柔韧性和聚集特性特别重要，已被证实。假设腐植质物质的化学演化存在自由基机制，金属离子可以帮助反应过程，从而在水处理中考虑有效的自旋捕获物质。版权所有爱思唯尔科学有限公司
The oxidation behaviour of gentisic acid, from which a humic acid model was synthesized, was studied. Electrochemical investigation coupled with Electron Spin Resonance analysis revealed the complexity of the mechanism. Coupled chemical reactions appeared after the two electron oxidation, leading to trihydroxybenzoic acids, and to dimeric compounds. The presence of methylenic groups, particularly important to mimic the flexibility and aggregative properties of natural humic substance, was confirmed. Assuming a free radical mechanism for the chemical evolution of humic substances, metal ions could help the reaction process, leading to efficient spin-trapping matters to be considered in water treatments. Copyright (C) 1996 Elsevier Science Ltd.