CJCU

Chem. J. Chinese Universities ›› 2000, Vol. 21 ›› Issue (S1): 413.

• Chemistry in Surface Science • Previous Articles     Next Articles

The Determination of Some Physicochemistrical Properties of CA-12 Using Two Phase Titration Technique

YUE Shan-Tang1, WANG Yan-Zhi2, CHEN Ming-Zi2, HAN Shu-Ming2, LI De-Qian1, SU Qiang1   

  1. 1. Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022;
    2. Faculty of Matter and Chemical Engineering, Yanshan Universty, Qinghuangdao 066000
  • Online:2000-12-31 Published:2000-12-31
  • Supported by:

    This work was supported by State Key Project of Fundamental Research (G1998061302) and National Natural Science Foundation of China (29771028,29801004).

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Abstract:

Naphthenic acid is a specific, effective extractant to separate yttrium and other rare earth metals and to purify yttrium. But, it has some weaknesses as follows:(1) The extraction separation of yttrium is performed under the condition of higher pH value, thus, the extractant, affected by the impurities of high valence metal ions, is easily emulsified. (2) It is a by-product of industry, so, its quality is not stable. In addition, it has a higher solubility in aqueous solution. (3) The separation factor of lanthanum/yttrium is less and is also affected by temperature, and so on[1].

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