三头基双链季铵盐表面活性剂在固液界面的吸附性能研究  

Study on Adsorptive Properties of Bis-Quaternary Ammonium Salts Surfactant with Three-Head Groups on Liquid-Solid Interface

作　　者：王林海 赵琳[2] 赖璐[3] 梅平[3] 

机构地区：[1]中海石油(中国)有限公司湛江分公司,广东湛江524057 [2]中国石油大学(华东),山东青岛266555 [3]长江大学化学与环境工程学院,湖北荆州434023

出　　处：《化学与生物工程》2010年第7期40-42,共3页Chemistry & Bioengineering

基　　金：中国石油科技创新基金资助项目(2008D-5006-02-01)

摘　　要：研究了室内合成的三头基双链季铵盐表面活性剂BDT在砂岩表面的静态吸附性能。在液固比一定时,考察了吸附时间、浓度对静态吸附量的影响。结果表明,在液固比为50∶1时,BDT在砂岩表面吸附的最低平衡时间为150 min。当BDT浓度达到0.4 mmol.L-1时,形成单分子层饱和吸附,单层饱和吸附量为4.49×10-6mol.g-1;随着BDT浓度继续增加,形成双层吸附;当BDT浓度达到0.7 mmol.L-1时,第二层吸附达到饱和,其饱和吸附量为2.83×10-6mol.g-1;BDT双层总的饱和吸附量为7.32×10-6mol.g-1。The article studied static adsorptive properties of bis-quaternary ammonium salts surfactant with three-head groups BDT synthesized at the surface of sandstone.The effects of adsorption time and BDT concentration on static adsorption capability were studied with the solid-liquid ratio unchanging.The results demonstrated that the minimum balance time of adsorption of surfactant BDT at the surface of sandstone was 150 min.When the concentration of BDT achieved 0.4 mmol·L^-1,adsorption saturation status of monolayer molecules was reached,adsorption saturation capacity of monolayer molecules was 4.49×10^-6 mol·g^-1;with the concentration of BDT increasing,they formed the double-adsorption.When the concentration of BDT achieved 0.7 mmol·L^-1,they reached saturation double-adsorption.Adsorption saturation capacity of the second layer molecules was 4.49×10^-6 mol·g^-1.Total adsorption saturation capacity of double layer molecules was 7.32×10^-6 mol·g^-1.

关 键 词：三头基双链季铵盐表面活性剂 吸附性能 饱和吸附量 

分 类 号：O647.31[理学—物理化学]