Please use this identifier to cite or link to this item:
|Title:||A new asymmetric SrCo0.8Fe0.1Ga0.1O3-δ perovskite hollow fiber membrane for stable oxygen permeability under reducing condition|
|Keywords:||Hollow fiber membrane|
Oxygen permeation membrane
|Citation:||Yang, N.-T., Kathiraser, Y., Kawi, S. (2013-02-01). A new asymmetric SrCo0.8Fe0.1Ga0.1O3-δ perovskite hollow fiber membrane for stable oxygen permeability under reducing condition. Journal of Membrane Science 428 : 78-85. ScholarBank@NUS Repository. https://doi.org/10.1016/j.memsci.2012.11.005|
|Abstract:||A new SrCo0.8Fe0.1Ga0.1O3-δ (SCFG) perovskite material has been successfully synthesized using an EDTA-CA complexing method. The resultant SCFG powder calcined at 900°C shows perovskite-type crystal structure upon calcination at 900°C for 5h. The oxygen-permeating SCFG hollow fiber membrane prepared from the SCFG powder by the phase inversion-sintering method shows a unique asymmetric structure with porous internal-external surfaces and a dense middle layer. This SCFG hollow fiber membrane is able to achieve a good oxygen permeability of 3.5mLmin-1cm-2 at 950°C and 0.55mLmin-1cm-2 at 600°C when supplied with air using He as a sweep gas. The presence of Ga was found to significantly lower the activation energy of SCFG hollow fiber membrane. The unique asymmetric structure played a critical role in elevating the critical temperature to 900°C for transition from surface-reaction to bulk-diffusion controlled regime. Furthermore the SCFG hollow fiber membrane is very stable under reducing environment of 20mLmin-1 methane for at least 100h with an enhanced permeation of 3.4mLmin-1cm-2 at 900°C. © 2012 Elsevier B.V.|
|Source Title:||Journal of Membrane Science|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Dec 7, 2018
WEB OF SCIENCETM
checked on Nov 21, 2018
checked on Nov 2, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.