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研究了1-苯基-3-甲基-4-苯甲酰基-吡唑酮-5缩2-氨基苯并噻唑(PMBP缩2-ABT,简称HA)与中性磷类萃取剂磷酸三丁酯(TBP)在离子液体双水相体系中对稀土离子的萃取行为。考察了萃取剂浓度、协萃剂浓度、水相pH值、盐的加入量及温度对萃取分配比的影响。结果表明,PMBP缩2-ABT与TBP具有显著协萃作用。当pH=4.3,萃取剂与协萃剂浓度比为4∶1时,二者协萃效率最高。用斜率法确定了协萃合物的组成为[LaA.HA.TBP]2+。
The effects of 1-phenyl-3-methyl-4-benzoyl-pyrazolone-5-condensed 2-aminobenzothiazole (PMBP 2-ABT, abbreviated as HA) and neutral phosphorus extractant tributylphosphate Ester (TBP) Extraction Behavior of Rare Earth Ions in Ionic Liquid Two - Aqueous System. The effects of extractant concentration, concentration of co-solvent, pH value of aqueous phase, addition amount of salt and temperature on extraction and distribution ratio were investigated. The results showed that PMBP reduced 2-ABT and TBP have significant synergistic effect. When pH = 4.3, extractant and co-leveler concentration ratio of 4: 1, the two synergistic extraction efficiency. Slope method was used to determine the composition of the complex as [LaA.HA.TBP] 2+.