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科学通报  2012 

硫酸自由基在水处理中的反应特性

DOI: 10.1360/972012-634, PP. 3493-3499

Keywords: 硫酸自由基,羟自由基,α-H,π电子

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Abstract:

从反应机理上解释了·OH和SO4·-相似的原因,研究了硫酸自由基(SO4·-)在水处理中的反应特性,探讨了其夺取有机物中C=C键、苯环上π电子和H能力的强弱.一般情况,SO4·-的反应活性次序是夺非芳香π电子>夺芳香π电子(苯系)>夺α-H>夺非α-H.SO4·-降解有机物的效率除与有机物结构有关外,还与所处的介质环境有关,即与周围物质的碰撞几率相关,在水处理中由于SO4·-与H2O分子反应的机会最多,一部分SO4·-夺取H2O分子中H,生成羟自由基.

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