| 1，2-双(1′-苯基-3′-甲基-5′-氧代吡唑-4′-基)乙二酮-[1，2]与三正辛基氧化膦协同萃取RE(Ⅲ)的性能和机理研究 |
| |
| 引用本文： | 张安运.1，2-双(1′-苯基-3′-甲基-5′-氧代吡唑-4′-基)乙二酮-[1，2]与三正辛基氧化膦协同萃取RE(Ⅲ)的性能和机理研究[J].稀土,2001,22(1):1-4. |
| |
| 作者姓名： | 张安运 |
| |
| 作者单位： | 陕西师范大学化学系, |
| |
| 摘 要： | 研究了1，2-双(1′-苯基-3′-甲基-5′-氧代吡唑-4′-基)乙二酮-1，2](H
|
| 关 键 词： | 稀土元素 1，2-双(1′-苯基-3′-甲基-5′-氧代吡唑-4′-基)乙二酮-[1，2] 三正辛基氧化膦 协同萃取 |
| 文章编号： | 1004-0277（2001)01-0001-04 |
| 修稿时间： | 2000年3月20日 |
RE( |
| |
| ZHANG An-yun.RE([J].Chinese Rare Earths,2001,22(1):1-4. |
| |
| Authors: | ZHANG An-yun |
| |
| Abstract: | The synergistic extraction properties and mechanism of RE(Ⅲ)(RE=La，Pr，Nd，Y，Gd and Dy)with 1,2-bis(1'-phenyl-3'-methyl-5'-pyrazolone-4'-yl)ethanedione-［1,2］(H2A)and tributyl phosphate(TOPO)have been studied in nitric acid solution at 30±1℃.The results show that there is a notable synergistic effect on La3+ for H2A+TOPO system,and the synergistic extraction coefficient of La3+ is calculated to be 4.4.By investigating the influence of concentrations of H2A and TOPO on the extraction of La3+,the composition of the extracted compound is determined as LaA*HA*TOPO. The half extraction pH1/2 values of La3+,Pr3+,Nd3+,Y 3+,Gd3+and Dy3+are 3.65，3.05，2.78，2.63，2.46 and 2.36,res pectively.Meanwhile,the extraction equilibrium constants,enthalpy change and ent ropy change of the reaction are also calculated. |
| |
| Keywords: | |
| 本文献已被 万方数据 等数据库收录！ |
|
