摘要
以苯乙烯-二乙烯基苯大孔树脂(HZ818)为载体、2-乙基己基磷酸单(2-乙基己基)酯(P507)为萃取剂制备了P507/HZ818浸渍树脂,并用扫描电镜(SEM)和红外光谱(IR)对其进行了表征。研究了该浸渍树脂在硫酸体系中选择性吸附In(Ⅲ)的性能。静态吸附实验表明:在In、Ga二元体系中,P507/HZ818浸渍树脂能够较好地选择性吸附In,In/Ga分离系数在溶液pH=1.2时达到最大;在In、Ga、Zn、Fe、Cu多元混合体系中,浸渍树脂对In的选择性吸附在溶液pH=0.9时效果最好。动态吸附实验表明:控制In、Ga二元体系溶液pH=1.2,浸渍树脂柱对Ga(Ⅲ)没有吸附作用,仅选择性吸附了In(Ⅲ),实现了In、Ga的分离;控制In、Ga、Zn、Fe、Cu多元体系溶液pH=0.9,可以较好地实现In的富集。
P507/HZ818 impregnated resin was prepared with styrene-divinylbenzene copolymer （HZ818） as the carrier and 2-ethylhexyl phosphonic acid mono （2-ethylhexyl） ester （P507） as the extractant, which was characterized by scanning electron microscope （SEM） and infrared spectra （IR）. The selective adsorp- tion performance of In （Ⅲ） with the impregnated resin in sulfuric acid system was studied. Static adsorp- tion experimental results show that P507/HZ818 impregnated resin has high selectivity to In （ Ⅲ ） in indi- um and gallium binary system and In/Ga separation coefficient reaches the maximum value when solution pH is 1.2. In multicomponent system of indium, gallium, zinc, iron and copper, the impregnated resin has the best adsorption selectivity to In （Ⅲ ） when solution pH is 0.9. Dynamic adsorption experimental results show that the resin column provides little adsorption capacity for Ga （Ⅲ ） and high selectivity for In （ Ⅲ ） in indium and gallium binary system of pH= 1.2,achieving indium separation from gallium. Indium can be well enriched in indium,gallium,zinc,iron and copper system by controlling solution pH at 0.9.
出处
《稀有金属与硬质合金》
CSCD
北大核心
2017年第2期28-32,共5页
Rare Metals and Cemented Carbides
基金
国家自然科学基金(21171085)
国家科技支撑计划(2015BAB02B03)
