| HDEHP和HEHEHP界面性质及添加剂对界面性质的影响 |
| |
| 引用本文： | 孙思修,郝京诚.HDEHP和HEHEHP界面性质及添加剂对界面性质的影响[J].高等学校化学学报,1994,15(11):1583-1587. |
| |
| 作者姓名： | 孙思修 郝京诚 |
| |
| 作者单位： | 山东大学化学系, 济南, 250100 |
| |
| 摘 要： | 测定了HDEHP、HEHEHP、TOPO、TBP、SDS和CTMAB的煤油溶液与硫酸盐水溶液所构成的液-液体系的界面张力,考察了水相pH对界面张力的影响,求得这些化合物的界面吸附常数,计算出饱和吸附时界面吸附分子的截面积,提出了用Cmin计算活性剂分配比的方法,研究了向HDEHP或HEHEHP体系中添加TOPO(或TBP)、SDS、CTMAB时界面张力的变化及其对萃取速率的影响。界面化学反应控制的萃取金属阳离子过程的速率将因添加剂占据界面和(或)形成界面负电层而降低,因添加剂与萃取剂形成界面活性较强的分子缔合物对金属的萃取而提高。
|
| 关 键 词： | 界面性质 表面活性剂 HDEHP HEHEHP |
| 收稿时间： | 1993-11-15 |
Interfacial Properties of HDEHP and HEHEHP and the Effect of Additives on Interfacial Properties |
| |
| SUN Si-Xiu,HAO Jing-Cheng,CUI Yan,YANG Qi-Mei,GAO Zi-Li,SHEN Jing-Lan.Interfacial Properties of HDEHP and HEHEHP and the Effect of Additives on Interfacial Properties[J].Chemical Research In Chinese Universities,1994,15(11):1583-1587. |
| |
| Authors: | SUN Si-Xiu HAO Jing-Cheng CUI Yan YANG Qi-Mei GAO Zi-Li SHEN Jing-Lan |
| |
| Institution: | Department of Chemistry, Shandong University, Jinan, 250100 |
| |
| Abstract: | The interfacial properties of surface active agents,HDEHP,HEHEHP,TOPO,TBP.SDS.CTMAB.were investigated at 298 K.The interfacial adsorption parameters,Cmin,A,and Langmuir's adsorption constant K were calculated respectively.The effect of additives on the interfacial tensions were discussed.The causes of the additives for the increase and/or decrease of extraction rate were also explained. |
| |
| Keywords: | interfacial property Surfactant Bi(2-ethylhexyl) phosphate 2-Ethylhexylphosphoric acid mono 2-ethylhexyl ester |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《高等学校化学学报》浏览原始摘要信息 |
| 点击此处可从《高等学校化学学报》下载免费的PDF全文 |
|
