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化学学报
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化学学报 ›› 1987, Vol. 45 ›› Issue (8): 766-770. 上一篇    下一篇

研究论文

P538萃取Co(II)的平衡研究

孙思修;高自立;盖会法;徐明;沈静兰   

  1. 山东大学化学系
  • 发布日期:1987-08-15

A study on the extraction equilibrium of cobalt(II) with P538

SUN SIXIU;GAO ZILI;GAI HUIFA;XU MING;SHEN JINGLAN   

  • Published:1987-08-15

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研究了P538-煤油于25±0.5℃时从硫酸钠介质中萃取Co(II)的平衡,并提出萃取机理.

关键词: 钴, 萃取剂, 高级烷烃 P, 平衡常数, 磷酸酯类, 硫酸钠, 煤油, 萃取磷酸, Ｐ５３８

The extration equilibrium of Co(II) from Na2SO4 solution with P538 in kerosene was studied had a mechanism is proposed as follows: Co2+ + 2Na+ + 4(H2A)j(0) = Co(HA)2.(NaHA)2.4(j-1)H2A(0) + 4H+ and Co2+ + 23(H2A)f(0) = Co(HA)2.2(j-1)H2A(0) + 2H+. Equilibrium constants for the reactions are 10-4.70 and 10-1.86, resp.

Key words: COBALT, EXTRACTIVE AGENT, HIGHER ALKANE P, EQUILIBRIUM CONSTANT, PHOSPHORIC ACID ESTER, SODIUM SULFATE, KEROSENE, PHOSPHORIC ACID EXTRACTION, P538

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