三辛胺萃取碲的研究

Studies on the Extraction of Tellurium with Trinoctyl Amine

研究了在盐酸体系中，低酸度范围内，用ＴＯＡ（ 三辛胺） 萃取碲（ＴＶ） ，其萃取性能随盐酸浓度增高而增大．考察了温度对萃取Ｔｅ（ＴＶ） 的影响，并计算出萃取热力学函数．用斜率法和饱和法确定饱和萃合物组成为２Ｔ０Ａ·Ｈ２ＴｅＣｌ６ ．反应机理为离子缔合．

The extraction behavier of tellurium (TV) with Tri n octyl amine from hydrochloric acid in lower concentration acid solution has been studied. The extraction capability increase with the increase of hydrochloric acid concentration. It is observed that the temperature has a influence upon extraction of tellurium (TV). The thermodynamic function of extraction have been calculated. It is determined by slope method and saturation method that the composition of extracted species is 2TOA·H 2TeCl 6. The extraction mechanism of tellurium with TOA is ioncombination.