Selective deposition of Pd on porous alumina support using supercritical CO2

Masahiko Matsukata*, Takashi Nishizuka, Yasushi Sekine, Eiichi Kikuchi

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)


A Pd/α-Al2O3 composite membrane was prepared on a porous α-Al2O3 disk via the thermal decomposition of bis(hexafluoroacetylacetonato)Pd(II), Pd(hfac)2. Pd(hfac)2 was dissolved in supercritical CO2 at 303 K, supplied to the substrate, and thermally decomposed at 403 and 443 K. The decomposition of Pd(hfac)2 at 443 K resulted in a sufficient pore filling of substrate with Pd as well as the formation of a thin Pd top layer. The hydrogen flux through this membrane was about 1.7 times than that of a electro-less plating Pd membrane with about 20 μm thick. Hydrogen permeation was governed by the solution-diffusion mechanism which gave a high separation selectivity.

Original languageEnglish
Pages (from-to)265-270
Number of pages6
JournalMaterials Research Society Symposium - Proceedings
Publication statusPublished - 2003 Jul 25
EventMembranes Preparation Properties and Applications - Boston MA, United States
Duration: 2002 Dec 22002 Dec 5

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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