石油亚砜和P_（507）协同萃取稀土元素的研究  

Research on the Synergistic Extracting Rare Earth by the Binary System of Petroleum Sulphoxide and P_(507)

作　　者：包福毅[1] 张文明[1] 

机构地区：[1]清华大学核能技术设计研究院

出　　处：《稀土》1995年第2期86-90,69,共6页Chinese Rare Earths

摘　　要：本文在盐酸介质中研究了石油亚砜和Ｐ（５０７）协同萃取稀土元素（Ｇｄ、Ｔｂ、Ｄｙ）的性能与机理，得出石油亚砜和Ｐ（５０７）协同萃取稀土元素Ｇｄ、Ｔｂ、Ｄｙ时有正协同效应，三者在体积比Ｖ（Ｐ（５０７））（０．５ｍｏｌ／Ｌ）／Ｖ（Ｒ２ＳＯ（１．４５ｍｏｌ／Ｌ）＝２／３时协同效应最明显；用斜率法确定萃合物的组成为ＲＥ（Ｒ２ＳＯ）２Ｐ（５０７）；研究了萃合物红外光谱图；测定了稀土的分配系数和分离系数；建立了稀土元素分配系数数学模型。The properties and principles of the synergistic extracting rare earth(Gd、TB、Dy)by the binary system of P_(507) and petroleum sulphoxide in the medium of hydrochloic acid have been investigated.When P_(507) and petroleum sulphoxide are used as synergistic extractants to extract rare earth(Gd or Tb Or Dy),they all possess positive synergistic extractive effect,which is most clear at the rate of V_P_(507),(0.5mol/L)/V_R_2so(1. 45M)=2/3. The composition of extracted complex compound which has been defined by the slope method is RE(R_2SO)_2(P_(507)).The infra-red spec- trograms of extractive complex have been analyzed. The models of extractive complex have been analyzed.The synergistic extractive coefficient of mixed rare earth have been determined and ana- lyzed.The models of distribution coefficient of synergistic rare earth(Gd or Tb of Dy)by P_(507) and petroleum sulphoxide have been established.

关 键 词：石油亚砜 协同萃取 稀土 数学模型 P507 

分 类 号：O614.33[理学—无机化学] O652.62[理学—化学]