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关于用2-乙基己基磷酸一2-乙基己酯(EHEHPA)和二2-乙基己基磷酸(DEHPA)或三正辛基氧膦(TOPO)混合物的煤油溶液从氯化物溶液中萃取钇(Ⅲ)的问题,在许多条件下做了系统研究。当用酸性有机磷萃取剂的混合物(EHEHPA+DEHPA)萃取时,观测到有一个较小的协同增强效应。另一方面,当用酸性和中性有机磷化合物的混合物(EHEHPA+TOPO)萃取时,则观测到了反协同效应。考虑到水相中无机配位体与金属的络合作用以及有机相中似乎可能的络合作用,本文对这些萃取数据进行了理论分析。
With regard to the extraction of yttrium from a chloride solution with a kerosene solution of a mixture of 2-ethylhexylphosphate (EHEHPA) and di-2-ethylhexylphosphate (DEHPA) or tri-n-octylphosphine oxide (TOPO) (Ⅲ) problems, under the conditions of doing a systematic study. When extracted with a mixture of acidic organophosphorus extractants (EHEHPA + DEHPA), a smaller synergistic effect was observed. On the other hand, an anti-synergistic effect was observed when extracted with a mixture of acidic and neutral organophosphorus compounds (EHEHPA + TOPO). Taking into account the complexation of inorganic ligands in the aqueous phase with metals and the possible complexation in the organic phase, these extracted data are theoretically analyzed.