ISSN 0862-5468 (Print), ISSN 1804-5847 (online)

 Information
Home
Publisher
Publication policy
Editorial board
Editors
Impact factor

Online submission
Author guidelines
Instruction for reviewers
Download instructions
 List of Content
Volume 59, 2015
  - Issue 1
  -
Issue 2
  - Issue 3
  - Issue 4
Volume 58, 2014
  - Issue 1
  -
Issue 2
  - Issue 3
  - Issue 4
Volume 57, 2013
  - Issue 1
  -
Issue 2
  - Issue 3
  - Issue 4
Previous Issues
  - 1995 - 2012

Ceramics-Silikáty 55 (2) 195-197 (2011)


Oxygen behavior in Y1-xZrxBaCo4O7+δ

S. Zhang, H. Song, J. Jia, D. Yang, H. Sun, X. Hu

Y1-xZrxBaCo4O7+δ (x = 0.0, 0.05, 0.1, 0.2, 0.4, 0.6) samples were synthesized by the solid state reaction method. The effects of Zr substitution for Y on the oxygen uptake/release properties of these samples were investigated by thermogravimetric (TG) from room temperature to 1150°C. The results show that there exists an optimizing Zr doping amount. The Y0.9Zr0.1BaCo4O7+δ sample can uptake more oxygen than the undoped YBaCo4O7+δ sample at 360°C. Especially, in an oxygen uptake/release cycles between 340°C and 410°C, the mass change of the doped Y0.9Zr0.1BaCo4O7+δ sample can reach 5.3 % of its original mass and show a stable oxygen uptake/release reproducibility. In addition, in the oxygen uptake/release cycles switched between oxygen and nitrogen atmosphere at 350°C, Y0.9Zr0.1BaCo4O7+δ can also adsorb more oxygen. These properties of Y1-xZrxBaCo4O7+δ make them to be a potential candidate in the field of gas purification and separation.

Keywords: Y1-xZrxBaCo4O7+δ; Thermogravimetric; Oxygen-storage; Gas separation

 Download the full version (PDF, 668 kB)

[Back]

 Webmaster l Journal Contact l Server Statistics l Last updated 11/15/15 l