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A CO2-Stable K2NiF4-Type Oxide(Nd0.9La0.1)2(Ni0.74Cu0.21Al0.05)O4+δfor Oxygen Separation.
- Source :
-
Industrial & Engineering Chemistry Research . Jun2013, Vol. 52 Issue 25, p8571-8578. 8p. - Publication Year :
- 2013
-
Abstract
- A K2NiF4-type oxide (Nd0.9La0.1)2(Ni0.74Cu0.21Al0.05)O4+δ(NLNCA) has been successfully synthesizedby a sol–gel method. The oxygen permeation and stability ofthe NLNCA membrane under CO2atmosphere were systematicallystudied. A steady oxygen permeation flux of 0.39 mL/(min·cm2) was obtained through the NLNCA membrane with a membranethickness of 0.6 mm at 975 °C when CO2was used asthe sweep gas. More importantly, the oxygen permeation flux has nosignificant decrease during 250 h operation, which indicates thatthe NLNCA membrane is stable under CO2. X-ray diffractionanalysis of the spent membrane shows that the membrane retains K2NiF4-type structure and no carbonate was formedeven exposed to CO2after 250 h operation. The resultsindicate that the NLNCA membrane has a great potential applicationin supplying oxygen for oxyfuel combustion with CO2capture.Moreover, the cost of the NLNCA is low, and it is beneficial for industrialapplication. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 08885885
- Volume :
- 52
- Issue :
- 25
- Database :
- Academic Search Index
- Journal :
- Industrial & Engineering Chemistry Research
- Publication Type :
- Academic Journal
- Accession number :
- 88407931
- Full Text :
- https://doi.org/10.1021/ie4008369