WATER-IN-CARBON DIOXIDE MICROEMULSIONS WITH A FLUOROCARBON-HYDROCARBON HYBRID SURFACTANT

被引:241
作者
HARRISON, K
GOVEAS, J
JOHNSTON, KP
OREAR, EA
机构
[1] UNIV TEXAS, DEPT CHEM ENGN, AUSTIN, TX 78712 USA
[2] UNIV OKLAHOMA, SCH CHEM ENGN & MAT SCI, NORMAN, OK 73019 USA
关键词
D O I
10.1021/la00022a028
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A one-phase microemulsion composed of a hybrid fluorocarbon/hydrocarbon surfactant C7F15CH(OS0(3)(-)- Na+)C7H15, water, and CO2 solubilizes substantial amounts of water. For example, the water-to-surfactant ratio in a single phase microemulsion is as high as 32 at 25 degrees C and 231 bar, compared with a value near 0 for more than 150 previously studied surfactants for temperatures up to 50 degrees C. Also with 1.9 wt % surfactant, up to 2 wt % water is soluble, which is 10 times the amount soluble in pure CO2. The requirements for the design of surfactants that form microemulsions in CO2 are examined.
引用
收藏
页码:3536 / 3541
页数:6
相关论文
共 31 条