Advanced

Effect of A/B-site substitution on oxygen production performance of strontium cobalt based perovskites for CO2 capture application

Shen, Qiuwan LU ; Zheng, Ying; Luo, Cong; Ding, Ning; Zheng, Chu-Guang and Thern, Marcus LU (2015) In RSC Advances 5(50). p.39785-39790
Abstract
Oxy-fuel combustion is one of the proposed technologies which have the potential to achieve zero CO2 emission. Strontium cobalt based perovskite oxygen carriers are promising materials for air separation with a high selectively for oxygen. And these perovskites can produce an oxygen enriched carbon dioxide stream for an oxy-fuel combustion process. The relatively low oxygen production yield may be a drawback of this type of material for this technology. This paper presents an effective approach by A/B-site substitution to improve the oxygen production performance of the perovskites. In this study, a series of different A/B-site substituted SrCo0.8Fe0.2O3-delta were prepared by an EDTA-citrate sol-gel combustion synthesis method. Fixed-bed... (More)
Oxy-fuel combustion is one of the proposed technologies which have the potential to achieve zero CO2 emission. Strontium cobalt based perovskite oxygen carriers are promising materials for air separation with a high selectively for oxygen. And these perovskites can produce an oxygen enriched carbon dioxide stream for an oxy-fuel combustion process. The relatively low oxygen production yield may be a drawback of this type of material for this technology. This paper presents an effective approach by A/B-site substitution to improve the oxygen production performance of the perovskites. In this study, a series of different A/B-site substituted SrCo0.8Fe0.2O3-delta were prepared by an EDTA-citrate sol-gel combustion synthesis method. Fixed-bed experiments and TGA measurements were performed to study the effects of A/B-site substitution on cyclic oxygen adsorption/desorption performance of the synthesized samples. The experimental results indicate that the oxygen desorption amounts of different A-site substituted perovskites decrease in the order of BaCo0.8Fe0.2O3-delta > Ba0.5Sr0.5Co0.8Fe0.2O3-delta > SrCo0.8Fe0.2O3-delta > Sr0.5Ca0.5Co0.8Fe0.2O3-delta > MgCo0.8Fe0.2O3-delta. Moreover, B-site substitution by different transition metal ions can significantly modify oxygen adsorption capacity and oxygen desorption performance of SrCo0.8Fe0.2O3-delta. Furthermore, oxygen desorption performance can be improved when Fe ions of the perovskite SrCo0.8Fe0.2O3-delta are substituted by Zr, Cr, Zn, and Ni ions. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
RSC Advances
volume
5
issue
50
pages
39785 - 39790
publisher
Royal Society of Chemistry
external identifiers
  • wos:000354211100018
  • scopus:84928944851
ISSN
2046-2069
DOI
10.1039/c5ra04891e
language
English
LU publication?
yes
id
8edaf0cb-2ee1-4211-8145-0218bd978513 (old id 7422580)
date added to LUP
2015-06-26 12:46:25
date last changed
2017-10-08 03:56:12
@article{8edaf0cb-2ee1-4211-8145-0218bd978513,
  abstract     = {Oxy-fuel combustion is one of the proposed technologies which have the potential to achieve zero CO2 emission. Strontium cobalt based perovskite oxygen carriers are promising materials for air separation with a high selectively for oxygen. And these perovskites can produce an oxygen enriched carbon dioxide stream for an oxy-fuel combustion process. The relatively low oxygen production yield may be a drawback of this type of material for this technology. This paper presents an effective approach by A/B-site substitution to improve the oxygen production performance of the perovskites. In this study, a series of different A/B-site substituted SrCo0.8Fe0.2O3-delta were prepared by an EDTA-citrate sol-gel combustion synthesis method. Fixed-bed experiments and TGA measurements were performed to study the effects of A/B-site substitution on cyclic oxygen adsorption/desorption performance of the synthesized samples. The experimental results indicate that the oxygen desorption amounts of different A-site substituted perovskites decrease in the order of BaCo0.8Fe0.2O3-delta > Ba0.5Sr0.5Co0.8Fe0.2O3-delta > SrCo0.8Fe0.2O3-delta > Sr0.5Ca0.5Co0.8Fe0.2O3-delta > MgCo0.8Fe0.2O3-delta. Moreover, B-site substitution by different transition metal ions can significantly modify oxygen adsorption capacity and oxygen desorption performance of SrCo0.8Fe0.2O3-delta. Furthermore, oxygen desorption performance can be improved when Fe ions of the perovskite SrCo0.8Fe0.2O3-delta are substituted by Zr, Cr, Zn, and Ni ions.},
  author       = {Shen, Qiuwan and Zheng, Ying and Luo, Cong and Ding, Ning and Zheng, Chu-Guang and Thern, Marcus},
  issn         = {2046-2069},
  language     = {eng},
  number       = {50},
  pages        = {39785--39790},
  publisher    = {Royal Society of Chemistry},
  series       = {RSC Advances},
  title        = {Effect of A/B-site substitution on oxygen production performance of strontium cobalt based perovskites for CO2 capture application},
  url          = {http://dx.doi.org/10.1039/c5ra04891e},
  volume       = {5},
  year         = {2015},
}