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Comparison of oxygen permeation through some perovskite membranes synthesized with EDTNAD

Taheri, Z ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1007/s11144-010-0158-2
  3. Abstract:
  4. Three dense membranes of types SrCo0.8Fe0.2O 3-δ (SCF(82)), La0.6Sr0.4Co 0.8Fe0.2O3-δ (LSCF(6482)) and La 0.8Sr0.2Co0.6Fe0.4O 3-δ (LSCF(8264)) perovskites were prepared by complexation applying a chelating agent, ethylene diamine N,N,N′,N′-tetra-N- acetyl-diamine (EDTNAD). The oxygen permeation flux through the perovskite membranes was measured as a function of temperature within 1,073-1,223 K as well as the oxygen partial pressure of 0.1-1.0 bar. The oxygen permeation fluxes for the membranes, SCF(82), LSCF(6482), LSCF(8264) with the thickness of 0.85 mm were observed as 9.2×10-7 (mol/cm2 s), 1.7×10-7 (mol/cm2 s), and 1.0×10-7 (mol/cm2 s) in these cases at 1,153 K. The results indicated the oxygen permeation process was mainly controlled by the oxygen bulk diffusion through these membranes
  5. Keywords:
  6. Bulk diffusions ; Chelating agent ; Dense membrane ; Ethylene diamine ; Membrane reactor ; Oxygen partial pressure ; Oxygen permeation ; Oxygen-permeation flux ; Perovskite membranes ; Bioreactors ; Chelation ; Diffusion ; Ethylene ; Membranes ; Oxide minerals ; Oxygen ; Oxygen permeable membranes ; Perovskite ; Permeation
  7. Source: Reaction Kinetics, Mechanisms and Catalysis ; Volume 100, Issue 2 , August , 2010 , Pages 459-469 ; 18785190 (ISSN)
  8. URL: http://link.springer.com/article/10.1007/s11144-010-0158-2