【摘要】 采用萃取剂N,N,N’,N’-四丁基丙二酰胺（TBMA）、N,N,N’,N’-四辛基-3-氧戊二酰胺（TODGA）和甲基异丁基甲酮（MIBK）从氯化铝水溶液中萃取铁,以制备高纯氯化铝。研究结果表明,当氯化铝溶液中盐酸浓度在4 mol/L左右时,TBMA和MIBK的萃取率在90%以上。TODGA显示出优异的萃取分离性能。当氯化铝溶液中Al³⁺浓度为2.0 mol/L,Fe³⁺浓度为0.0036 mol/L（0.2 g/L）,HCl浓度为1.2 mol/L时,0.20 mol/L TODGA的环己烷或环己烷有机相对铁的一次萃取率达到99.9%以上,多次萃取后溶液中的铁含量低于0.01 mg/L,能深度去除氯化铝中的铁杂质,在工业化生产中有极大的应用价值。更多还原

【Abstract】 The extraction behaviors of Fe（ Ⅲ） in the preparation of high purity aluminum chloride with N,N,N’,N’-tetrabutyl malonamide（ TBMA）,N,N,N’,N’-tetraoctyl-3-oxy-glutaramide（ TODGA） and methyl isobutyl ketone（ MIBK） have been investigated. The results show that the extraction efficiency of Fe（ Ⅲ） with TBMA or MIBK is 90% when the concentration of hydrochloric acid in the aluminum chloride solution is4 mol/L. TODGA shows an excellent separation performance. When the concentrations of Al³⁺,Fe³⁺,and HCl are 2. 0 mol/L,0. 0036 mol/L（0. 2 g/L）,and 1. 2 mol/L,respectively,in the solution of aluminum chloride,the extraction efficiency of Fe³⁺is more than 99. 9% with 0. 20 mol/L TODGA in cyclohexane or n-dodecane. After several extractions,the iron impurities in the aluminum chloride can be deeply removed and the iron content in the solution is lower than 0. 01 mg/L,indicating that it has potential application in industrial production.更多还原