Synergy in the Autoxidation of S(IV) Inhibited by Phenolic Compounds
作者： Wanda Pasiuk-Bronikowska , Tadeusz Bronikowski , Marek Ulejczyk
DOI: 10.1021/JP0208790
关键词: Gallic acid 、 Chemistry 、 Organic chemistry 、 Phenol 、 Oxygen 、 Kinetics 、 Autoxidation 、 Catalysis 、 Aqueous solution 、 Nuclear chemistry 、 Catechin
摘要: The effects of phenol (C6H5OH), catechin [C6H4(OH)2], and gallic acid [HOOCC6H2(OH)3] on the kinetics aqueous SO2 oxidation by molecular oxygen have been investigated for dilute systems, as pertain to chemistry troposphere surface waters. In experiments performed under batch (homogeneous oxidation) or semibatch (heterogeneous conditions, we measured decay with a Yellow Spring Instruments probe increase in S(VI) concentration an Orion conductivity cell. All studied phenolic compounds caused inhibition uncatalyzed autoxidation S(IV), but inhibiting effectiveness was much lower than that acid. dual role not only also promoting action demonstrated carried out presence Co Mn catalyst when synergy effect evident. Another extraordinary behavior observed case at prolonged leading oscillations the...
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