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本文报告了二—(2—乙基己基)二硫代磷酸(D_2EHDTPA)在硫酸体系中萃取锌的性能。测定了萃合物的组成,以红外光谱和核磁共振谱探讨了萃合物的成键情况,通过EHMO法计算了D_2EHDTPA和二—(2—乙基己基)磷酸(D_2EHPA)与锌形成的萃合物,以实验及计算数据说明了具有不同键合原子的烷基磷酸萃取剂对锌的萃取能力,得到了与HSAB(硬软酸碱)原理一致的结果。
This paper reports the extraction of zinc from sulfuric acid using di (2-ethylhexyl) phosphorodithioic acid (D 2 EHDTPA). The composition of the complex was determined. The bonding of the complex was investigated by IR and 1H NMR spectra. The extraction of D_2EHDTPA and di (2-ethylhexyl) phosphoric acid (D_2EHPA) with zinc was calculated by EHMO method The experimental results show that the alkylphosphonic acid extractants with different bonding atoms have good ability to extract zinc. The results are consistent with the principle of HSAB.