Selective extraction of gallium from aluminum and indium using tripod phenolic ligands.
Selective extraction of gallium from aluminum and indium using tripod phenolic ligands.
复制标题
使用三脚酚配体从铝和铟中选择性萃取镓。
DOI：
10.1016/s0039-9140(00)00573-7
复制
发表时间：
2001
期刊：
影响因子：
6.1
通讯作者：
T. Honjo
中科院分区：
文献类型：
--
作者：
N. Hirayama;Y. Horita;S. Oshima;K. Kubono;H. Kokusen;T. Honjo
研究了三脚架四齿酚配体三(2-羟基-3，5-二甲基苯基)胺(H3tdmba)对铝、镓、铟等三价金属阳离子的萃取作用，为铝、镓、铟的分离奠定了基础。以三氯甲烷为萃取剂时，镓几乎可以定量地被萃取(−=6.66±0.06)，而铝和铟由于空间位阻而几乎不能被萃取。被提取的Ga物种被估计为与一个H2O分子形成的三方双锥配合物。此外，通过将配体改为更酸性的三(5-氯-2-羟基-3-甲基苄基)胺(H3tcmba)(在以二氯乙烷为萃取剂时，logKex=−6.18±0.18)，增加了对Ga的萃取率。
Solvent extraction of trivalent group 13 metal cations such as aluminum, gallium and indium with tripod quadridentate phenolic ligand, tris(2-hydroxy-3,5-dimethylbenzyl)amine (H3tdmba), was investigated as fundamental study for their mutual separation. Gallium was extracted almost quantitatively as Ga(tdmba) (logKex=−6.66±0.06 on using chloroform as extraction solvent), whereas aluminum and indium were hardly extracted due to steric hindrance on complexation of them with the ligand. The extracted Ga species was estimated as trigonal bipyramidal complex with one H2O molecule. Furthermore, extractability of Ga was increased by changing the ligand to more acidic tris(5-chloro-2-hydroxy-3-methylbenzyl)amine (H3tcmba) (logKex=−6.18±0.18 on using dichloroethane as extraction solvent).