New morphological Ba_0.5Sr_0.5Co_0.8Fe_0.2O_3?¦Á hollow fibre membranes with high oxygen permeation fluxes

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• 作者：Dezhi Han^a ; ^c ; Xiaoyao Tan^b ; Zifeng Yan^a ; ^{zfyancat@upc.edu.cn} ; Qin Li^c ; Shaomin Liu^c ; ^{shaomin.liu@curtin.edu.au}
• 关键词：Air separation ; Hollow fibre ; Inorganic membrane ; Perovskite
• 刊名：Ceramics International
• 出版年：2013
• 出版时间：January, 2013
• 年：2013
• 卷：39
• 期：1
• 页码：431-437
• 全文大小：950 K

文摘

Perovskite Ba_0.5Sr_0.5Co_0.8Fe_0.2O_3?¦Á (BSCF) hollow fibre membranes were fabricated by a combined phase inversion and sintering technique. The membranes were characterised by XRD, SEM and tested for air separation. The membrane possesses a novel morphology consisting of one dense layer and one porous layer. Oxygen permeation fluxes through the obtained hollow fibre membranes were measured in the temperature range 650-950 ¡ãC using helium sweep gas rates from 50 to 200 mL min^?1. Experimental results indicated the oxygen permeation flux through the BSCF hollow fibre membrane sintered at 1050 ¡ãC was approximately 11.46 mL min^?1 cm^?2 at 950 ¡ãC when the helium sweep rate was kept at 200 mL min^?1. The BSCF hollow fibre membrane showed a stable oxygen permeation flux of 8.60 mL min^?1 cm^?2 over the investigated period of 120 h at 900 ¡ãC.