摘要
合成了新型萃取剂N,N,N′,N′-四丁基丁二酰胺(TBSA),研究了其萃取Ce(Ⅲ)的性能,详细考察了硝酸浓度、萃取剂浓度、硝酸锂浓度以及温度等对萃取分配比的影响,得出了TBSA以甲苯为稀释剂时萃取反应的表观平衡常数为(0.29±0.16)L6/mol6及298K时的热力学焓变为-17.90kJ/mol,并用红外光谱表征了配合物Ce(NO3)3.3TBSA的结构。
N, N, N＇, N＇-Tetrabutylsuccinylamide （TBSA） was synthesized and purified by vacumm distillation. The extractability of this diamide for Cerium （Ⅲ） was studied. The effect of concentrations of nitric acid, extractant, LiNO3 and temperature on the extraction distribution ratios was investigated in detail. The apparent equilibrium constant of extraction determined is （0.29 ± 0. 16） L^6/mol^6 at 298 K. The enthalpy of extraction is - 17.90 kJ/mol. The composition of the extracted species is found to be Ce（NO3 ）3 ·3TBSA as characterized by IR spectroscopy.
出处
《化学世界》
CAS
CSCD
北大核心
2006年第7期426-428,共3页
Chemical World
基金
国家自然科学基金(20301008)
山东省中青年学术骨干基金(Q031301)资助课题
