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Dual Phase Sorbents for High Temperature Air Separation

  • Mehdi M. Alipour
  • Rajender Gupta
  • John Nychka
Conference paper

Abstract

Ceramic sorbents based on combined perovskite/spinel structure have been investigated for their potential use in oxygen- enriched CO2 stream production. Oxides of strontium and barium doped with cobalt and iron were chosen for this study. X-ray diffraction studies revealed a dual-phase structure containing perovskite and spinel systems. Microstructure observed by SEM showed the spinel phase as intergrowth structure in the dominantly perovskite phase. Thermogravimetric studies show a higher desorption rate and sorption capacity compared to the similar perovskite sorbents which with a lower CO2 uptake can produce an optimum sorbent material for air separation in oxyfuel power generation. Sintering temperature also showed an effect on oxygen sorptive/desorptive properties. Improved properties can be explained based on the defect chemistry of the new structure.

Keywords

Carbon Capture Spinel Phase Dual Phase Desorption Rate Oxygen Removal 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg & Tsinghua University Press 2013

Authors and Affiliations

  • Mehdi M. Alipour
    • 1
  • Rajender Gupta
    • 1
  • John Nychka
    • 1
  1. 1.Chemical Materials Engineering DepartmentUniversity of AlbertaAlbertaCanada

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