Determining the rate-limiting step during oxygen semi-permeation of CaTi_0.9Fe_0.1O_3-δ oxygen transport membranes

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• 作者：C. Salles^a ; J. Fouletier^b ; ^c ; D. Marinha^a ; M.-C. Steil^b ; ^c ; ^{Cesar.Steil@lepmi.grenoble-inp.fr}
• 关键词：Oxygen transport membrane ; Calcium titanate ; CTF ; Oxygen semipermeability ; Surface exchange
• 刊名：Journal of Membrane Science
• 出版年：2017
• 出版时间：1 April 2017
• 年：2017
• 卷：527
• 期：Complete
• 页码：191-197
• 全文大小：975 K
• 卷排序：527

文摘

Electrochemical surface probes to propose limiting steps in oxygen semipermeability. Surface exchanges and oxygen bulk diffusion limit the permeation flux for T<750 °C. Permeation flux is limited by a bulk process at temperatures of above 750 °C.