中华医学超声杂志

应用化学 ›› 2009, Vol. 26 ›› Issue (11): 1353-1356.

• 研究论文 • 上一篇    下一篇

二-（2-乙基己基）磷酸P204与三烷基叔胺N235协同萃取钼

孙盈1,李艳玲2,权新军1,廖伍平2*   

  1. (1.吉林大学化学学院 长春；2.中国科学院长春应用化学研究所稀土资源利用国家重点实验室 长春 130022)
  • 收稿日期:2008-11-14 修回日期:2009-01-07 出版日期:2009-11-10 发布日期:2009-11-10
  • 通讯作者: 廖伍平，男，研究员; E-mail:wpliao@ciac.jl.cn; 研究方向：溶剂萃取分离
  • 基金资助:
    国家自然科学基金（50704029）和吉林省科技发展计划（20080116）资助项目

Synergistic Extraction1

SUN Ying1, LI Yan-Ling2, QUAN Xin-Jun1, LIAO Wu-Ping2*   

  1. (1.College of Chemistry,Jilin University，Changchun 130012;
    2.State Key Laboratory of RE Resource Utilization,Changchun Institute of
    Applied Chemistry,Chinese Academy of Sciences,Changchun 130022)
  • Received:2008-11-14 Revised:2009-01-07 Published:2009-11-10 Online:2009-11-10

PDF

1828

被引次数

4

摘要：

研究了P204（二-(2-乙基己基)磷酸, HA）和N235（三烷基胺, R3N）二元体系在HCl介质中对金属钼的萃取，结果表明P204和N235混合萃取剂在萃取钼时存在协同效应，并且在N235摩尔分数为0.7时协萃系数为2.24；考察了溶液酸度、P204或N235浓度及温度对萃取钼的影响，确定了协萃络合物为(R3NH)3•HMo8O26•2(HA)，并比较了负载前后有机相的红外光谱。

关键词: 协同萃取, 钼, 三烷基叔胺, 二-(2-乙基己基)磷酸

Abstract:

Synergistic effect in the extraction of molybdenum by the mixed extractants of di-2-ethylhexyl phosphoric acid (P204) and trialkylamine N235 has been investigated. The results reveal that the mixed system shows an obvious enhancement on the extraction of molybdenum with the mole fraction of N235 being of about 0.7. The effect of the aqueous acidity, the concentration of P204 or N235 and temperature on the extraction of molybdenum was further studied. The reaction mechanism was deduced and the extracted species was decided to be (R3NH)3•HMo8O26•2(HA). FT-IR spectra of the mixed extractants and the loaded organic phase were examined.

Key words: synergistic extraction, molybdenum, trialkylamin, di-2-ethylhexyl phosphoric acid

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