Separations: Materials, Devices, and Processes

Oxygen permeation through a CO2-tolerant mixed conducting oxide (Pr0.9La0.1)2(Ni0.74Cu0.21Ga0.05)O4+δ

  1. Jun Tang,
  2. Yanying Wei,
  3. Lingyi Zhou,
  4. Zhong Li,
  5. Haihui Wang*

Article first published online: 1 SEP 2011

DOI: 10.1002/aic.12742

Issue

AIChE Journal

AIChE Journal

Volume 58, Issue 8, pages 2473–2478, August 2012

Additional Information

How to Cite

Tang, J., Wei, Y., Zhou, L., Li, Z. and Wang, H. (2012), Oxygen permeation through a CO2-tolerant mixed conducting oxide (Pr0.9La0.1)2(Ni0.74Cu0.21Ga0.05)O4+δ. AIChE J., 58: 2473–2478. doi: 10.1002/aic.12742

Author Information

  1. School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China

*School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China

Publication History

  1. Issue published online: 5 JUL 2012
  2. Article first published online: 1 SEP 2011
  3. Accepted manuscript online: 25 JUL 2011 01:46PM EST
  4. Manuscript Revised: 5 JUL 2011
  5. Manuscript Received: 13 MAY 2011

Funded by

  • Natural Science Foundation of China. Grant Number: nos. U0834004 and 20936001
  • National Basic Research Program of China. Grant Number: 2009CB623406
  • Science-Technology Plan of Guangzhou City. Grant Number: 2009J1-C511-1
  • Fundamental Research Funds for the Central Universities, SCUT. Grant Number: 2009220038

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Keywords:

  • membrane;
  • mixed conductor;
  • oxygen permeation;
  • separation;
  • CO2

Abstract

A novel K2NiF4-type oxide based on (Pr0.9La0.1)2(Ni0.74Cu0.21Ga0.05)O4+δ (PLNCG) dense mixed conducting ceramic membrane was successfully prepared through a sol–gel route. The oxygen permeation flux through the membrane swept by pure CO2 was comparative to that swept by He. The oxygen permeation and the stability of PLNCG under pure CO2 were investigated in detail. A membrane with a thickness of 0.8 mm was steadily operated for 230 h with a constant oxygen permeation flux of 0.32 mL/(min cm2) at 975°C using pure CO2 as sweep gas. X-ray diffraction shows that PLNCG can maintain its fluorite phase, and no carbonates were observed, even when it was exposed to pure CO2 for a long time. © 2011 American Institute of Chemical Engineers AIChE J, 58: 2473–2478, 2012

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