【摘要】 本文报导了N,N-二（1-甲基庚基）乙酰胺（N503）在盐酸介质中对铁（Ⅲ）的萃取基本性能,包括平衡时间、添加剂、酸度影响及萃取容量。萃取平衡的研究表明N503萃取铁（Ⅲ）的反应为:Fe³⁺+H⁺+4Cl^-+3S（O）?HFeCl₄·3S（O）,（S为N503分子）,测得Kex=10^2.19±0.04（25℃,μ=4M）。 由萃取饱和法制得的铁（Ⅲ）配合物,经元素分析与热分析说明其组成为HFeCl₄·2S。通过配合物的磁矩、紫外、红外光谱测定,可以认为配合物的存在形式为（H⁺·2S）（FeCl₄^-）。更多还原

【Abstract】 The extraction behaviors of iron （Ⅲ） with N,N-di（1-methylheptyl） acetamide（N503） in hydrochlorie acid medium, including equilibrium time, the effect of addi-tive agents and acidity, and extraction capacity have been described. The equation ofextraction reaction has been deduced through a study on the equilibrium as Fe³⁺ + H⁺+ 4Cl^- + 3S （O） Kex ? HFeCl₄·3S（O）, where S refers to the extractant. The extrractionconstant, Kex has been estimated as 10^2.19±0.04 （25℃, μ= 4M）. By means of both elemental analyses and thermal analysis, the composition of thecoordination compound of iron（Ⅲ）obtained by saturation extraction has been identifiedas HFeCl₄·2S. The species of coordination compound investigated by magnetic moment.UV and IR spectra measurements can be expressed as（H⁺·2S）（FeCl₄^-）.更多还原