Effect of compressed CO2 on the critical micelle concentration and aggregation number of AOT reverse micelles in isooctane
文献类型：期刊论文
| 作者 | Chen, Jing; Zhang, Jianling; Han, Buxing; Feng, Xiaoying; Hou, Minqiang; Li, Wenjing; Zhang, Zhaofu |
| 刊名 | CHEMISTRY-A EUROPEAN JOURNAL
 |
| 出版日期 | 2006-10-25 |
| 卷号 | 12期号:31页码:8067-8074 |
| 关键词 | Aggregation Carbon Dioxide Critical Micelle Concentration Micelles |
| ISSN号 | 0947-6539 |
| DOI | 10.1002/chem.200501593 |
| 英文摘要 | The effect of compressed CO, on the critical micelle concentration (cmc) and aggregation number of sodium bis-2-ethylhexylsulfosuccinate (AOT) reverse micelles in isooctane solution was studied by UV/Vis and florescence spectroscopy methods in the temperature range of 303.2-318.2 K and at different pressures or mole fractions of CO2 (X-CO2). The capacity of the reverse micelles to solubilize water was also determined by direct observation. The standard Gibbs free energy (AG(degrees)(m)), standard enthalpy (Delta H-degrees(m)), and standard entropy (Delta S-degrees(m)) for the formation of the reverse micelles were calculated by using the cmc data determined. It was discovered that the cmc versus X-CO2 curve and the Delta G(degrees)(m) versus X-CO2 curve for a fixed temperature have a minimum, and the aggregation number and water-solubilization capacity of the reverse micelles reach a maximum at the X-CO2 value corresponding to that minimum. These results indicate that CO2 at a suitable concentration favors the formation of and can stabilize AOT reverse micelles. A detailed thermodynamic study showed that the driving force for the formation of the reverse micelles is entropy. |
| 语种 | 英语 |
| WOS记录号 | WOS:000241913600012 |
| 出版者 | WILEY-V C H VERLAG GMBH |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/59833]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Han, Buxing |
| 作者单位 | Chinese Acad Sci, Inst Chem, Ctr Mol Sci, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Jing,Zhang, Jianling,Han, Buxing,et al. Effect of compressed CO2 on the critical micelle concentration and aggregation number of AOT reverse micelles in isooctane[J]. CHEMISTRY-A EUROPEAN JOURNAL,2006,12(31):8067-8074. |
| APA | Chen, Jing.,Zhang, Jianling.,Han, Buxing.,Feng, Xiaoying.,Hou, Minqiang.,...&Zhang, Zhaofu.(2006).Effect of compressed CO2 on the critical micelle concentration and aggregation number of AOT reverse micelles in isooctane.CHEMISTRY-A EUROPEAN JOURNAL,12(31),8067-8074. |
| MLA | Chen, Jing,et al."Effect of compressed CO2 on the critical micelle concentration and aggregation number of AOT reverse micelles in isooctane".CHEMISTRY-A EUROPEAN JOURNAL 12.31(2006):8067-8074. |
入库方式： OAI收割
来源：化学研究所
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