| 氨基膦酸树脂吸附铈的研究 |
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| 引用本文： | 王永江,熊春华,舒增年,王惠君.氨基膦酸树脂吸附铈的研究[J].稀土,2001,22(2):17-21. |
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| 作者姓名： | 王永江 熊春华 舒增年 王惠君 |
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| 作者单位： | 1. 丽水师范专科学校,
2. 浙江海洋学院, |
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| 基金项目： | 浙江省教委资助项目(编号为97211) |
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| 摘 要： | 研究了铈(Ⅲ)在氨基磷酸树脂上的吸附行为。试验结果在pH5.0时，静态饱和吸附容量为197mg/g干树脂；用2mol.L-1HCl洗脱，洗脱率为98.1%；表观速率常数k298=2.71×10-5s-1；等温吸附服从Freundlich经验式；吸附反应中的△Ho=50.0kJ.mol-1，△So=286J.mol-1.K-1，△Go=-35.1kJ.mol-1。树脂功能基与Ce3+的配比为2∶1；并用红外光谱探讨了树脂与铈的成键。
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| 关 键 词： | 氨基膦酸树脂 铈 吸附 |
| 文章编号： | 1004-0277（2001)02-0017-05 |
| 修稿时间： | 2000年7月18日 |
Studies on the Sorption of Amino Methylene Phosphonic Acid Resin for Cerium |
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| WANG Yong-jiang,XIONG Chun-hua,SU Zheng-nian,WANG Hui-jun.Studies on the Sorption of Amino Methylene Phosphonic Acid Resin for Cerium[J].Chinese Rare Earths,2001,22(2):17-21. |
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| Authors: | WANG Yong-jiang XIONG Chun-hua SU Zheng-nian WANG Hui-jun |
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| Affiliation: | WANG Yong Jiang 1,XIONG Chun hua 1,SU Zheng nian 1,WANG Hui jun 2 |
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| Abstract: | The sorption behavior of amino methylene phosphonic acid resin (APAR)for cerium(Ⅲ)is investigated.Experimental results show that the statically saturated sorption capacity is 197mg/g.resin;Ce(Ⅲ)adsorbed on APAR can be eluted with 2mol.L-1 HCl,elution percentage is 98.1%；The apparent rate constant is k298=2.71×10-5s-1；The sorption behavior of APAR for Ce(Ⅲ) obeys the Freundlich isotherm.The sorption themodynamicparameters such as enthalpy change △Ho,free energy change △Go and entropy change △So of sorption (APAR)for Ce(Ⅲ)are 50.0kJ.mol-1，-35.1kJ.mol-1，286J.mol-1.K-1,respectively.The coordination molar ratio of the functional group of APAR to Ce(Ⅲ) is 2∶1.The sorption mechanism of APAR for Ce(Ⅲ) is examined by IR spectrometry. |
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| Keywords: | amino methylene phosphonic acid resin cerium sorption |
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