摘要
通过测定5709-庚烷-CoSO_4(或NiSO_4)萃取体系的界面张力,判定了两相内各组分的界面吸附特性。实验表明,5709为强界面活性物质,在本实验研究范围内,它基本上以半分子状态在相界面上被吸附。萃合物CoA_2(或NiA_2)亦为界面活性物质,但其被吸附能力远低于5709分子。水相中组分H^+、CO^(2+)、Ni^(2+)均呈界面负吸附。 这一研究为5709-庚烷从H_2SO_4介质中萃取钴、镍的过程机制的假设提供了依据。
The interfacial adsorption characteristics of species are determined by measuring the interracial tensions in 5709-Heptane-CoSO_4 (or NiSO_4) extraction system.The experimental results show that 5709 is a strong interracial active reagent, and it is adsorbed at interface mainly as the monomer form in the experimental range. The extracts CoA_2 and NiA_2 are also interracial active reagents, but they are less capable than 5709 in interfacial adsorption. The species H^+ , Co2+ , Ni^(2+) in aqueous phase are species shown as negative interfacial adsorption.According to this experimental results a reasonable supposition of extraction regime of Co^(2+), Ni^(2+) with 5709 can be concluded.
出处
《高校化学工程学报》
EI
CAS
CSCD
1992年第4期317-324,共8页
Journal of Chemical Engineering of Chinese Universities
关键词
庚烷
硫酸
萃取
钴
镍
界面吸附
Inerfacial Characteristics
Extraction System
Adsorption Characteristics
