摘要
研究了用胺醇萃取剂NTAB-182在盐酸介质中萃取铂时pH、稀释剂、萃取平衡时间及萃取剂浓度的影响。用NaOH可完全反萃铂。用连续变换法、饱和法及元素分析法确定了萃合物的组成。通过红外光谱及紫外光谱确定该体的萃取机理为离子缔合。萃取动力学研究表明,萃取反应主要在界面上进行。
The extraction of PtCl_6^(2-) from hydrochloric acid with NTAB-182 has been studied. The optimal conditions of extraction and reextraction are determined experimantally. The composition of the extracted complex has been studied by the methods of saturation, molecular ratio, and elemental analysis. The structure of the extracted complex is discussed on the basis of its IR and UR. The extraction mechanism of PtCl_6^(2-) with NTAB-182 is regarded as ion-association. It is round that the extraction reactions are taken place mainly on the interface by the study on the NTAB-182 —HCl interfacial nature.
出处
《贵金属》
CAS
CSCD
北大核心
1992年第4期1-7,共7页
Precious Metals
基金
国家自然科学基金
关键词
铂
溶剂萃取
氨基醇
Platinum
Solvent extraction
Amino-alcohols
