Characterization of zirconia modified porous stainless steel supports for Pd membranes

Huiyuan Gao, Yongdan Li, Jerry Y S Lin, Baoquan Zhang

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

A thin well-bonded zirconia film was formed on a porous stainless steel support by a sol-gel dip-coating method followed by firing in hydrogen atmosphere. The zirconia layer has a cubic phase structure. The surface composition of the film was analyzed by X-ray photoelectron spectroscopy. A comparison between H2-fired and air-fired samples indicated that the surface/interface composition of the sample fired in air was rich in Fe 2O3, whereas that of the fired in H2 contained more metastable cubic zirconia phase and spinel type iron chromate. Binding energy shifts of Zr and Fe in the mixed oxides, together with the presence of iron and chromium oxides suggests that interfacial reaction between the coating and the substrate occurred, which is favorable for a good adhesion of the layers. The average pore size of the support modified by multilayer zirconia coatings declined drastically from original 2 μm to the coated top-layer 0.4 μm. The ZrO2 film showed a hydrogen selectivity of 2.7 for H 2/N2, and a hydrogen flux of 1.159 × 10-3 mol/m2.s at room temperature and with a pressure difference of 101 kPa across the film.

Original languageEnglish (US)
Pages (from-to)419-426
Number of pages8
JournalJournal of Porous Materials
Volume13
Issue number3
DOIs
StatePublished - Aug 2006

Fingerprint

Stainless Steel
zirconium oxides
Zirconia
stainless steels
Stainless steel
membranes
Membranes
Hydrogen
Coatings
hydrogen
Iron
Chromates
coatings
chromium oxides
Oxides
chromates
air
mixed oxides
Phase structure
Air

Keywords

  • Coating
  • Porous stainless steel
  • Sol-gel
  • Top-layer
  • Zirconia

ASJC Scopus subject areas

  • Chemistry (miscellaneous)
  • Physical and Theoretical Chemistry
  • Materials Science(all)
  • Catalysis

Cite this

Characterization of zirconia modified porous stainless steel supports for Pd membranes. / Gao, Huiyuan; Li, Yongdan; Lin, Jerry Y S; Zhang, Baoquan.

In: Journal of Porous Materials, Vol. 13, No. 3, 08.2006, p. 419-426.

Research output: Contribution to journalArticle

Gao, Huiyuan ; Li, Yongdan ; Lin, Jerry Y S ; Zhang, Baoquan. / Characterization of zirconia modified porous stainless steel supports for Pd membranes. In: Journal of Porous Materials. 2006 ; Vol. 13, No. 3. pp. 419-426.
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