Acta Phys. -Chim. Sin. ›› 2008, Vol. 24 ›› Issue (03): 487-491.doi: 10.3866/PKU.WHXB20080324

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Deposition of Pd Nano-Particles in W/O Microemulsion by Chemical Demulsifying

ZHOU Yong-Hua; YE Hong-Qi   

  1. Institute of Powder Technology, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
  • Received:2007-09-14 Revised:2007-11-29 Published:2008-03-10
  • Contact: ZHOU Yong-Hua

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.

Key words: W/O microemulsion, Palladium, Nano-particle, Deposition, Chemical demulsifying