A novel zincum-doped perovskite-type ceramic membrane for oxygen separation

verfasst von

Xinzhi Chen, Hongfei Liu, Yanying Wei, Jürgen Caro, Haihui Wang

Abstract

Zincum-doped ceramic membrane materials based on BaCo_0.4Fe_0.4Zn_xZr_(0.2-x)O_3-δ with 0 ≤ x ≤ 0.2 were synthesized by combining citric acid and ethylene-diamine-tetraacetic acid (EDTA) complexing method. X-ray diffraction (XRD) patterns show that the BaCo_0.4Fe_0.4Zn_0.2O_3-δ ceramic oxide exhibits a pure cubic perovskite structure. Oxygen temperature-programmed desorption (O₂-TPD) profile indicates that BaCo_0.4Fe_0.4Zn_0.2O_3-δ possesses a good phase reversibility. An oxygen permeation flux of 0.65 ml/min cm² was obtained at 950 °C and a single activation energy of 67 kJ/mol was observed for the oxygen permeation in the temperature range of 600-950 °C. No decline was found during more than 100 h oxygen permeation.

Organisationseinheit(en)

Institut für Physikalische Chemie und Elektrochemie

Externe Organisation(en)

South China University of Technology

Typ

Artikel

Journal

Journal of alloys and compounds

Band

484

Seiten

386-389

Anzahl der Seiten

4

ISSN

0925-8388

Publikationsdatum

18.09.2009

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Werkstoffmechanik, Maschinenbau, Metalle und Legierungen, Werkstoffchemie

Elektronische Version(en)

https://doi.org/10.1016/j.jallcom.2009.04.107 (Zugang: Geschlossen)