NDLI: rocessing and oxygen permeation studies of asymmetric multilayer a 0 . 5 Sr 0 . 5 Co 0 . 8 Fe 0 . 2 O 3 − ı membranes

Please wait, while we are loading the content...

rocessing and oxygen permeation studies of asymmetric multilayer a 0 . 5 Sr 0 . 5 Co 0 . 8 Fe 0 . 2 O 3 − ı membranes

Content Provider	Semantic Scholar
Author	Kovalevskya, V. Yaremchenkob, A. A. Kolotyginb, V. A. Shaulab, A. L. Khartonb, V. V. Snijkersa, M. M. Buekenhoudta, A. Fradeb, J. R. Naumovichb, E. N.
Copyright Year	2011
Abstract	The oxygen transport studies of dense Ba0.5Sr0.5Co0.8Fe0.2O3−ı (BSCF) ceramic membranes, prepared via glycine–nitrate route, demonstrated that the permeation rate is predominantly controlled by surface exchange kinetics when the membrane thickness is smaller than 1.00 mm. In order to improve oxygen exchange, an asymmetric membrane concept including two porous and one dense layer was implemented. The amount of graphite as a pore-forming additive, powder compaction and sintering conditions were optimized to produce three-layer membranes having appropriate mechanical strength and microstructure. Comparison of the data on oxygen permeation through three-layer and dense 1.00 mm thick symmetric membranes indicated that a moderate improvement of the overall performance was symmetric membrane xygen permeation urface activation achieved due to asymmetric architecture. The oxygen fluxes through membrane with 170 m thick dense and porous layers with thicknesses of 1.05 mm and 100 m at 1173 K were found to be ∼1.5–1.8 times higher than those for a 1.00 mm thick symmetric membrane. The variation of oxygen flux changes with pressure and the values of the activation energies for oxygen permeation suggest significant gas diffusion limitations in the porous layers, whilst the role of other factors is still significant. Microstructure of the porous layers requires further optimization for successful application of the oxygen exchange catalysts. © 2011 Elsevier B.V. All rights reserved.
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://projects.itn.pt/PTDC64357/SJ30.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

Central Library (ISO-9001:2015 Certified)
Indian Institute of Technology Kharagpur
Kharagpur, West Bengal, India | PIN - 721302

See location in the Map
03222 282435
Mail: support@ndl.gov.in

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in