Acta Chimica Sinica ›› 1995, Vol. 53 ›› Issue (7): 689-694. Previous Articles     Next Articles

Original Articles

锂的新萃取体系研究

盛怀禹;李蓓莉;陈耀焕;袁群;许庆仁;严金英;姚介兴;叶伟贞;龙海燕;戴浦兴   

  1. 中国科学院上海有机化学研究所
  • 出版日期:1995-07-15 发布日期:1995-07-15

Study on new extraction system for lithium

SHENG HUAIYU;LI BEILI;CHEN YAOHUAN;YUAN QUN;XU QINGREN;YAN JINYING;YAO JIEXING;YE WEIZHEN;LONG HAIYAN;DAI PUXING   

  • Online:1995-07-15 Published:1995-07-15

o-Arylazo-β-arylols (HA) were first time chosen as the extractants for lithium (Li^+) with the formation of chelating anion (LiA~2^-), which could be extracted into inactive solvents in the presence of a quaternary ammonium base (Q^+X^-). The mechanism of this chelation-ion association synergic extraction was discussed in detail. The dynamics data and the thermodynamics parameters and the structure of the extractable complexes were determined. It was shown that the new system exhibits excellent properities, especially the larger separation coefficient β~Li~/~Na than other systems hitherto issued.

Key words: EXTRACTION, AZO COMPOUNDS, EXTRACTION SYSTEM, LITHIUM, CHELATING AGENT, CHLOROBENZENE, QUATERNARY AMMONIUM SALTS

CLC Number: