摘要
本文讨论了环状亚砜衍生物α -十二烷 -四氢噻吩亚砜 (DTMSO )的萃钯机理 ,DTMSO在盐酸溶液中、低酸度条件下 ,同时存在中性溶剂络合萃取机理和离子缔合萃取机理。亚砜通过硫和氧原子与钯配合 ;在高酸度条件下 ,亚砜以离子缔合萃取机理萃钯 ,萃合物发生亚砜对PdCl2 -4 的内配位转变。
The mechanism of extracting Pd(Ⅱ)with cyclic sulphoxide derivative(DTMSO)was investigated.The r esults indicated that the reaction mechanism contains both neutral solvent compl exing extraction and ion association extraction in lower acidity,the composition of extraction complex is(PdCl 2)·2DTMSO and(H...2DTM SO) +PdCl - 3,Pd is coordinated with O and S atom in>S=O group.The reaction is ion association extraction in higher acidity.
出处
《贵金属》
CAS
CSCD
2002年第2期16-20,共5页
Precious Metals
