摘要
用萃取化学方法(包括斜率、等温线和Job′S法)测定了三苯胂氧和三辛氮氧萃取金萃合物的组成为〔TPAsOH〕AuCl_4和〔(TONO)_2H〕AuCl_4,′HNMR和IR谱表明H^+是与TPAsO和TONO中氧原子键合的。萃取反应属于离子缔合机现。还确定了两种萃合物的结构。TPAsO和TONO是金的有效萃取剂,可用于从工艺液中金的萃取精炼。
By using chemical extraction methods (including slope, isothemal and JOB's method),the compositions of the extracted species of Au(Ⅲ)with triphenylarsine oxide (TPAsO) and trioctylamine oxide (TONO) were determined respectively to be [TPAsOH]AuCl4 and [(TONO)2H] AuCl4. H NMR and IR spectra indicated that H ion is bonded to oxygen in TPAsO and TOPO. The reaction mechanism of extraction is formed in the course of Ion-association, and the structure of the two extracted, species is given.Both TOPO and TPAsO are very efficient extractants of gold (Ⅲ) and have been used to extract Au(Ⅲ) from technological solution for refining.
出处
《黄金》
CAS
北大核心
1989年第8期40-42,共3页
Gold
关键词
金
萃取
三苯胂氧
三辛氮氧
Triphenylarsine oxide
Trioctylamine oxide
Gold
Extraction mechanism and Application.
