| W/O微乳液中纳米Pd微粒的化学破乳沉积 |
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| 引用本文： | 周永华,叶红齐.W/O微乳液中纳米Pd微粒的化学破乳沉积[J].物理化学学报,2008,24(3):487-491. |
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| 作者姓名： | 周永华 叶红齐 |
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| 作者单位： | Institute of Powder Technology, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China |
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| 摘 要： | 利用脂肪醇聚氧乙烯醚型非离子表面活性剂Marlipal O13/50、水、环己烷组成的W/O微乳液体系合成纳米Pd微粒, 考察了化学破乳剂作用下纳米Pd微粒的沉积过程. 结果表明, 不同化学破乳剂使纳米Pd微粒沉积的速率顺序为1,4-二噁烷跃四氢呋喃跃甲醇跃乙醇跃正丁醇. 研究了化学破乳剂对微乳液界面张力与两亲因子的影响. 结果表明, 微乳液结构的破坏是界面张力增大的过程, 同时也是两亲性降低而向Lifschitz线逐渐靠近的过程.
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| 关 键 词： | W/O微乳液 钯 纳米微粒 沉积 化学破乳 |
| 收稿时间： | 2007-09-14 |
| 修稿时间： | 2007年9月14日 |
Deposition of Pd Nano-Particles in W/O Microemulsion by Chemical Demulsifying |
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| ZHOU Yong-Hua,YE Hong-Qi.Deposition of Pd Nano-Particles in W/O Microemulsion by Chemical Demulsifying[J].Acta Physico-Chimica Sinica,2008,24(3):487-491. |
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| Authors: | ZHOU Yong-Hua YE Hong-Qi |
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| Institution: | Institute of Powder Technology, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China |
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| Abstract: | Palladium nano-particles were synthesized by W/O microemulsion composed of nonionic surfactant (alkylpolyglycol ethers) named Marlipal O13/50, water and cyclohexane. The deposition of palladium nano-particles by chemicals demulsifying was investigated. The results showed that the sequence of deposition rate of palladium nano-particles from microemulsion under the action of different chemical demulsifier is 1,4-dioxane>THF>methanol>ethanol >n-butanol. The effects on interfacial tension and amphiphilicity of chemical demulsifier were studied. The results showed that the demulsifying process of microemulsion is also a process of interfacial tension increasing and a process gradually near to Lifschitz line. |
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| Keywords: | W/O microemulsion Palladium Nano-particle Deposition Chemical demulsifying |
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