Adv. Search
Journal of Inorganic Materials

Journal of Inorganic Materials

• Research Paper • Previous Articles     Next Articles

Thermal Stability and Oxygen Separation Properties of
SrCo0.8Fe0.2O3-δand SrCo0.8Fe0.1Sn0.1O3-δCeramic Membranes

FAN Chuan-Gang1,2, LIU Wei1, ZUO Yan-Bo1, DENG Zeng-Qiang1, HUANG Xiang-Xian2, CHEN Chu-Sheng1   

  1. 1. Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230006, China; 2. School of Materials Engineering, Anhui University of Technology, Maanshan 243002, China
  • Received:2005-09-20 Revised:2005-11-16 Published:2006-09-20 Online:2006-09-20

PDF (PC)

1701

Abstract: The phase composition, thermal shocking resistance and the separating properties
of both SrCo0.8Fe0.2O3-δ(SCF) and SrCo0.8Fe0.1Sn0.1O3-δ (SSCF) membranes were investigated systematically. It was found the as
prepared SCF had long-term phase stability, and the SSCF had the composite feature with dual phase composition. As compared with the SCF, the SSCF had a more promoted thermal shocking resistance, which related to the decreasing of thermal expansion coefficient of it in comparison with the former. Furthermore, a permeation rate of 1.87×10-6 mol cm-2 s-1 was obtained on the as-prepared SCF membrane at 1000℃ and under oxygen partial pressure gradient of the PO2(h)/PO2(l)=0.209atm /0.012atm,
and at the same measuring condition, the permeability was 2.49×10-6 mol cm-2 s-1 for the as prepared SSCF one.

Key words: oxygen permeation, perovskite structure, ceramic membrane, thermal shocking resistance