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Type: Journal article
Title: A CO₂-stable K₂NiF₄-type oxide (Nd ₀.₉La₀.₁)₂(Ni₀.₇₄Cu 0.₂₁Al₀.₀₅)O₄+δ for oxygen separation
Other Titles: A CO(2)-stable K(2)NiF(4)-type oxide (Nd (0).(9)La(0).(1))(2)(Ni(0).(74)Cu 0.(21)Al(0).(05))O(4)+delta for oxygen separation
Author: Chen, Y.
Liao, Q.
Wei, Y.
Li, Z.
Wang, H.
Citation: Industrial and Engineering Chemistry Research, 2013; 52(25):8571-8578
Publisher: American Chemical Society
Issue Date: 2013
ISSN: 0888-5885
Statement of
Yan Chen, Qing Liao, Yanying Wei, Zhong Li and Haihui Wang
Abstract: A K2NiF4-type oxide (Nd0.9La0.1)2(Ni0.74Cu0.21Al0.05)O4+δ (NLNCA) has been successfully synthesized by a sol–gel method. The oxygen permeation and stability of the NLNCA membrane under CO2 atmosphere were systematically studied. A steady oxygen permeation flux of 0.39 mL/(min·cm2) was obtained through the NLNCA membrane with a membrane thickness of 0.6 mm at 975 °C when CO2 was used as the sweep gas. More importantly, the oxygen permeation flux has no significant decrease during 250 h operation, which indicates that the NLNCA membrane is stable under CO2. X-ray diffraction analysis of the spent membrane shows that the membrane retains K2NiF4-type structure and no carbonate was formed even exposed to CO2 after 250 h operation. The results indicate that the NLNCA membrane has a great potential application in supplying oxygen for oxyfuel combustion with CO2 capture. Moreover, the cost of the NLNCA is low, and it is beneficial for industrial application.
Rights: Copyright © 2013 American Chemical Society
RMID: 0030032620
DOI: 10.1021/ie4008369
Appears in Collections:Chemical Engineering publications

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