摘要
利用三烷基胺 (730 1 )为络合剂 ,在较宽的 pH值条件下实验测定了对氨基苯磺酸稀溶液的萃取相平衡分配系数 ;分析了络合剂浓度、稀释剂种类以及溶液 pH值对络合萃取相平衡分配系数的影响 ;讨论了络合剂萃取对氨基苯磺酸偶极离子的质子转移过程 ,提出了平衡分配系数D值的表达式 .
Based on systematic investigation and analysis of literature, p aminobenzene sulfonic acid is selected as a typical solute to be separated from dilute solution.An aliphatic,straight chain tertiary amine,7301,is used as complexing agent.Since the pH of aqueous solution is an important factor in chemical complexation extraction of p aminobenzene sulfonic acid,its effect on extraction equilibium is especially studied in the experiments.The effects of concentration of complexing agent and type of diluents on distribution ratio D are also investigated.Meanwhile,the proton transfer equilibrium is discussed.By using Mass Action Law,an expression of equilibrium distribution ratio for 7301 system is proposed.The results show satisfying precision of the model.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2000年第1期85-89,共5页
CIESC Journal
基金
国家自然科学基金!资助项目 (No 2 98361 30 )
