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Oxidation of phenol by green rust and hydrogen peroxide at neutral pH

机译：在中性pH下绿锈和过氧化氢氧化苯酚

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The reactions involving green rusts(GRs),mixed ferrous-ferric oxides,remain poorly described relative to other iron oxides minerals which have been studied much more extensively.While the role of GRs in the reduction of chlorinated solvents and inorganic contaminants has been investigated,no work has appeared concerning the use of GR to promote Fenton reaction and oxidize organic pollutants.In this study,the catalytic ability of synthetic chloride green rust GR(C1)was examined by employing the phenol as a model compound for the Fenton-like oxidation at neutral pH.For both tested concentrations of GR(5 g L~(-1)and 10 g L~(-1)),rapid removal of phenol was observed when H2O2 was added.In GR water suspension,about 62% of phenol was mineralized after 24 h in the presence of H2O2(155 mM)and GR(10 g L~(-1)),at pH 7.In GR/H2O2 system,HPLC analysis showed that phenol had been transformed after 1 min mainly into catechol and hydroquinone,which corroborates with a Fenton reaction taking place in this system.
机译：相对于已被广泛研究的其他氧化铁矿物质，涉及生铁锈（GRs），混合的三价铁氧化物的反应仍然描述得很差。尚未有关于使用GR促进Fenton反应和氧化有机污染物的工作。在这项研究中，以苯酚为模型化合物，研究了合成氯化物绿锈GR（C1）对Fenton样氧化的催化能力。在中性pH值下，对于GR（5 g L〜（-1）和10 g L〜（-1））的测试浓度，加入H2O2都能快速去除苯酚。在GR水悬浮液中，约62％在pH为7的H2O2（155 mM）和GR（10 g L〜（-1））存在下24小时后苯酚被矿化。在GR / H2O2系统中，HPLC分析表明，苯酚主要在1分钟后被转化分解为邻苯二酚和对苯二酚，这与芬顿反应在这个系统。

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