| 二（2-乙基己基）膦酸萃取不同介质中Pr^3＋的研究 |
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| 引用本文： | 余晓皎 姚秉华 永长幸雄. 二（2-乙基己基）膦酸萃取不同介质中Pr^3＋的研究[J]. 稀有金属材料与工程, 2007, 36(6): 1099-1101 |
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| 作者姓名： | 余晓皎 姚秉华 永长幸雄 |
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| 作者单位： | 1. 西安理工大学,陕西,西安,710048
2. 福井大学工学部,日本,福井,910-8507 |
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| 摘 要： | 研究了二（2-乙基己基）膦酸（PIA-8）的庚烷溶液分别在高氯酸钠、氯乙酸、柠檬酸介质中对pr^3＋的萃取。探讨了萃取平衡时间、不同介质、PIA-8浓度对萃取Pr^3＋的影响及反萃剂浓度对反萃率的影响；斜率法确定了萃合物的组成为Pr（HA2）3；测定了La^3＋、Ce^3＋、pr^3＋、Nd^3＋、Sm^3＋、Eu^3＋在不同介质中的半萃取pH值，在高氯酸钠介质中分别为3．55、3．19、3．02、2．98、2．61、2．43：在氯乙酸介质中分别为3．65、3．27、3．12、3．08、2．66、2．50；在柠檬酸介质中分别为4．34、4．26、4．11、3．91、3．57、3．38。
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| 关 键 词： | 二(2-乙基己基)膦酸 萃取 镨 介质 |
| 文章编号： | 1002-185X（2007）06-03-1099 |
| 修稿时间： | 2006-12-082007-03-17 |
Study on Solvent Extraction of Pr3+ from Different Medium by Bis (2-Ethylhexyl) Phosphonic Acid in Heptane |
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| Yu Xiaojiao,Yao Binghu,Nagaosa Yukio. Study on Solvent Extraction of Pr3+ from Different Medium by Bis (2-Ethylhexyl) Phosphonic Acid in Heptane[J]. Rare Metal Materials and Engineering, 2007, 36(6): 1099-1101 |
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| Authors: | Yu Xiaojiao Yao Binghu Nagaosa Yukio |
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| Abstract: | The extraction of Pr3+was studied by using heptane containing bis(2-ethylhexyl)phosphinic acid in sodium perchlorate,chloroacetic acid and citric acid medium,respectively. The effects of extraction equilibrium time,different mediums,PIA-8 concentrations upon extraction Pr3+ and that of concentration of back extraction agent on back extraction rate of Pr3+ were discussed. The composition of the extracted compound was shown to be La(HA2)3.The pH1/2 values of La3+,Ce3+,Pr3+,Nd3+,Sm3+ and Eu3+ in different mediums were determined,it is 3.69,3.30,3.16,3.10,2.68 and 2.54 in sodium perchlorate medium respectively,3.65,3.27,3.12,3.08,2.66 and 2.50 in chloroacetic acid mediums,respectively,4.34,4.26,4.11,3.91,3.57 and 3.38 in citric acid mediums,respectively. |
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| Keywords: | PIA-8 extraction praseodymium medium medium |
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