摘要
以SnCl2为活化试剂,采用二烷基亚砜(DEHSO)从Rh-Sn-Cl体系中萃取Rh.结果表明:溶液中未添加SnCl2时,Rh的萃取率很低;随着溶液中Sn/Rh摩尔比的增大,Rh的萃取率提高;当溶液中Sn/Rh摩尔比达到6以上、HCl浓度为3 mol/L时,用1.0 mol/L的DEHSO萃取Rh,萃取率可达99%.负载有机相中的Rh可用5mol/L HCl+0.03mol/LNaClO3进行反萃.研究表明该萃取体系遵循酸性离子缔合机理.
Rhodium was extracted from an Rh-Sn-Cl system, with dialkyl sulphoxide （DEHSO） as the extractant and with stannous chloride as the activator. The results indicate that the extraction rate of rhodium increases with the molar ratio of Sn to Rh till the maximum of 99% at a molar ratio of 6： 1 with 1.0 mol/L DEHSO in 3 mol/L HCl, that the Rh in the loaded organic phase can be stripped with 5 mol/L HCl ＋ 0. 03 mol/L NaClO3 , and that the extraction obeys the mechanism of acid ion association.
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2008年第7期57-61,共5页
Journal of South China University of Technology(Natural Science Edition)
基金
广东省自然科学基金资助项目(06300845)
关键词
铑
溶剂萃取
二烷基亚砜
二氯化锡
离子缔合
rhodium
solvent extraction
dialkyl sulphoxide
stannous chloride
ion association
