| 二（2-乙基己基）磷酸络合萃取邻氨基苯酚的机理 |
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| 引用本文： | 崔节虎,杜秀红,郑宾国,王香平,刘军坛.二（2-乙基己基）磷酸络合萃取邻氨基苯酚的机理[J].光谱实验室,2009,26(2):177-181. |
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| 作者姓名： | 崔节虎 杜秀红 郑宾国 王香平 刘军坛 |
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| 作者单位： | 1. 郑州航空工业管理学院土建学院环境工程教研室,郑州市大学中路号,450015
2. 河南职工医学院,郑州市,451191 |
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| 基金项目： | 郑州航院青年基础项目 |
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| 摘 要： | 在二（2-乙基己基）磷酸（D2EHPA）络合萃取邻氨基苯酚（OAP）实验中,研究了稀释剂种类、溶液的初始pH值等因素对OAP稀溶液分配比（D）的影响。溶液的初始pH值对萃取结果影响较大,当初始pH值在pKa1和pKa2之间时,分配比出现峰值;二（2-乙基己基）磷酸主要是通过离子缔合和质子交换来实现萃取的,而稀释剂则主要是物理萃取,在同一浓度下,二（2-乙基己基）磷酸的萃取能力随稀释剂的极性增大而提高,极性环境优于惰性稀释剂环境。红外光谱分析证明萃取过程存在离子交换和离子缔合反应。
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| 关 键 词： | 络合萃取 邻氨基苯酚 二(2-乙基己基)磷酸 |
Study on Complexation Extraction Mechanism of o-Aminophenol |
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| Cui Jie-Hu,Du Xiu-Hong,ZHENG Bin-Guo,WANG Xiang-Ping,Liu Jun-Tan.Study on Complexation Extraction Mechanism of o-Aminophenol[J].Chinese Journal of Spectroscopy Laboratory,2009,26(2):177-181. |
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| Authors: | Cui Jie-Hu Du Xiu-Hong ZHENG Bin-Guo WANG Xiang-Ping Liu Jun-Tan |
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| Institution: | Zhengzhou Institute of Aeronautical Industry Management;Zhengzhou 450015;P.R.China;Medical College for Staff and Workers;Zhengzhou 451191;P.R.China |
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| Abstract: | Di(2-ethylhexyl)phosphoric acid was used as the extraction agent for the extraction of o-aminophenol in 2-octanol and kerosene.Equilibrium data for active and inactive diluents were obtained at various di(2-ethylhexyl)phosphoric acid concentrations.Di(2-ethylhexyl)phosphoric acid extracted both neutral and positive forms of o-aimnophenol.A maximum distribution coefficient occured between pKa1 and pKa2.The initial pH values have a large effect on D values,but effects of diluents on D are due to the physics e... |
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| Keywords: | Complexation Extraction o-Aminophenol Di（2-ethylhexyl）Phosphoric Acid |
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