| Fe(OH)2悬浮液在EDTA作用下氧气氧化生成δ-FeOOH的机理研究 |
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| 引用本文： | 魏雨,孟哲,贾振斌,马子川.Fe(OH)2悬浮液在EDTA作用下氧气氧化生成δ-FeOOH的机理研究[J].高等学校化学学报,2005,26(5):945-947. |
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| 作者姓名： | 魏雨 孟哲 贾振斌 马子川 |
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| 作者单位： | 河北师范大学化学学院, 石家庄050016 |
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| 基金项目： | 河北省自然科学基金(批准号:501115)资助. |
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| 摘 要： |
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| 关 键 词： | δ-FeOOH EDTA Fe(OH)2 氧化 |
| 收稿时间： | 2004-05-09 |
Mechanism of δ-FeOOH Formation by Oxygen Oxidizing Fe(OH)2 Suspension with EDTA Used as Cofactor |
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| WEI Yu,MENG Zhe,JIA Zhen-Bin,MA Zi-Chuan.Mechanism of δ-FeOOH Formation by Oxygen Oxidizing Fe(OH)2 Suspension with EDTA Used as Cofactor[J].Chemical Research In Chinese Universities,2005,26(5):945-947. |
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| Authors: | WEI Yu MENG Zhe JIA Zhen-Bin MA Zi-Chuan |
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| Institution: | College of Chemistry, Hebei Normal University, Shijiazhuang 050016, China |
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| Abstract: | At room temperature and in the presence of trace EDTA, the formation of δ-FeOOH was studied by the rapid oxidation of Fe(OH)2 suspension with O2. The structural and morphological changes were characterized by various techniques such as XRD, FTIR and TEM. γ-FeOOH and (δ-FeOOH) formed simutaneously in the early period of oxidation. But as the rate of mass transfer was in equilibrium, trace (γ-FeOOH) vanished gradually. Accordingly, pure phase δ-FeOOH was obtained. At the same time, critical amount ratio K of EDTA to Fe2+ was verified. The experiments show that the reactivity, rate of the oxidizing agent and pH of the initial medium were important factors for the formation of pure phase (δ-FeOOH). Under the auxiliary effect of EDTA, the reactivity of O2 was nearly improved to that of H2O2. And the process of the oxidation that Fe(OH)2 suspension was oxidized by O2 under that condition was discussed. |
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| Keywords: | &delta -FeOOH EDTA Fe(OH)2" target="_blank">2')" href="#">Fe(OH)2 Oxidation |
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