摘要
测试水杨酸在超临界二氧化碳中的溶解度数据,研究了水杨酸络合剂在超临界二氧化碳中萃取汞离子,分别讨论了配比、压力、温度、时间对萃取效率的影响。得到了最佳的萃取条件为20 MPa、323 K、45 min和[Hg+]:[SAL]:[PFOSANEt4]=1:200:200,在最佳萃取条件下萃取效率达到95.5%,可以进行工业领域的推广应用。水杨酸作为络合剂在超临界二氧化碳中萃取汞离子的研究未见有关报道。
The solubility data of salicylic acid in supercritical carbon dioxide were tested, and the extraction efficiency of the salicylic acid chelating agent under different conditions was investigated. The effect of ratio, pressure, time and temperature on the extraction efficiency was discussed. The results show that the optimum extraction conditions are as follows: temperature 323 K, pressure 20 MPa,extraction time 45 min and [Hg+]:[SAL]:[PFOSANEt4] = l:200:200. Under above conditions, the best extraction efficiency for Hg+ is 95.5%.
出处
《当代化工》
CAS
2016年第3期453-455,459,共4页
Contemporary Chemical Industry
基金
国家自然科学基金项目
项目号:41206106
汉中职业技术学院院级科研课题项目
项目号:HZYKY201507
关键词
水杨酸
汞离子
萃取效率优化
超临界二氧化碳
Salicylic acid
Mercury ion
Extraction efficiency optimization
Supercritical carbon dioxide