| 甲醇-水混合溶液中HPMBP对RE~(3+)的萃取机理研究 |
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| 引用本文： | 孔晓朵,张秀英.甲醇-水混合溶液中HPMBP对RE~(3+)的萃取机理研究[J].河南师范大学学报(自然科学版),2007,35(1):118-121. |
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| 作者姓名： | 孔晓朵 张秀英 |
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| 作者单位： | 1. 河南师范大学,化学与环境科学学院,河南,新乡,453007;鹤壁职业技术学院,河南,鹤壁,458030
2. 河南师范大学,化学与环境科学学院,河南,新乡,453007 |
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| 摘 要： | 研究了在甲醇-水混合溶液中,HPMBP(1-苯基-3-甲基-4-苯甲酰基吡唑酮-5)的氯仿溶液对稀土离子RE3+(Nd3+、Eu3+、Ho3+)的萃取机理,利用斜率法并借助红外(IR)光谱分析、元素分析、热分析(DT-DTA)等手段对萃取条件下制备的萃合物的组成进行了表征.实验证明:在RE3+(~10-4mol.L-1)/HNO3NaNO3CH3OH-H2O/HPMBP-CHCl3体系中,由于甲醇取代水分子参与配位,形成疏水性较强的加合物RE(PMBP)3.2CH3OH产生正协同效应,使lgD由-0.403提高到0.688,萃取分配比明显提高.
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| 关 键 词： | HPMBP 甲醇 萃取机理 萃合物 |
| 文章编号： | 1000-2367(2007)01-0118-04 |
| 修稿时间： | 2006年9月14日 |
Study on the Extraction Mechanism of RE3+ by HPMBP from Methanol-Water Mixed Solutions |
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| KONG Xiao-duo,ZHANG Xiu-ying.Study on the Extraction Mechanism of RE3+ by HPMBP from Methanol-Water Mixed Solutions[J].Journal of Henan Normal University(Natural Science),2007,35(1):118-121. |
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| Authors: | KONG Xiao-duo ZHANG Xiu-ying |
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| Abstract: | The extraction mechanism of rare earth ions RE3+(Nd3+,Eu3+,Ho3+)from methanol-water mixed solution by HPMBP(1-phenyl-3-methyl-4-benzoyl-pyrazolone-5)in chloroform has been investigated.Furthermore,the extraction complexes have been synthesized and characterized by means of Slop Analysis and IR,Elementary Analysis,TG-DTA.All the results indicated: in the RE3+(～10-4 mol·L-1)/HNO3 NaNO3 CH3OH-H2O / HPMBP-CHCl3 systems,methanol had a positive synergistic effect caused by formation of adduct complex RE(PMBP)3·2CH3OH,thus the data of lgD was increased from-0.403 to 0.688,remarkably increased the extraction ratio. |
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| Keywords: | HPMBP methanol extraction mechanism extraction complexes |
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