摘要
本文通过对容量法和ICP法测定轻稀土Nd的萃取率以及对P204+煤油体系和P204-HCl、P204-HCl-H3AOH体系负载轻稀土(La、Ce、Pr、Nd)有机相进行红外光谱测试分析的研究。研究结果表明,P204-HCl-H3AOH体系萃取轻稀土过程中,配合剂柠檬酸没有参加萃取反应,而且RE3+与P204中基团P-OH的H+发生了置换反应生成P-O→RE,与基团P=O发生了配合作用形成的配合物P=O→RE,其配合能力随La、Ce、Pr、Nd原子序数的增加逐渐增大。
The analysis and study of extraction rate of Nd by the method of volumetric method and ICP method is done in this article. Moreover, the testing and analysis of P204 ＋ kerosene and the organic phase loading light rare earth （La,Ce,Pr,Nd） in P204-HCl and P204-HCl-H3AOH extraction systems with infrared spectrum is also discussed . The results show that in the process of light rare earth extraction in P204-HCl-H3AOH, accessory ingredient named citric acid doesnl take part in the extraction reaction. RE^3＋ does a displacement reaction with H^＋ of P-OH in P204 and forms P-O→RE. Complexes P = O→RE is also formed by the complex action between RE^3＋ and P = O in the process. And the complex ability is increased with the increase of atomic number of La,Ce,Pr,Nd.
出处
《矿冶》
CAS
2010年第2期47-50,54,共5页
Mining And Metallurgy
关键词
柠檬酸
轻稀土
萃取率
配合物
红外光谱
citric acid
light rare earth
extraction rate
complexes
infrared spectrum
