Ba0.5Sr0.5Co0.8Fe0.2O3‐δ ceramic hollow‐fiber membranes for oxygen permeation

Liu, Shaomin; Tan, Xiaoyao; Shao, Zongping; Costa, João C. Diniz da

doi:10.1002/aic.10966

Cited by 94 publications

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References 30 publications

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“…Recently, increasing activities can be observed in the preparation of oxygen ion conducting membranes in hollow-fiber geometry. Examples are the pioneering papers from the groups of Li, [19][20][21][22][23][24] Liu, [25][26][27] and Schiestel, [28][29][30] as well as the papers by Trunec 31 and Luyten et al 32 showing that the Correspondence concerning this article should be addressed to H. Wang at hhwang@scut.edu.cn. thin-walled ceramic hollow-fiber membrane can be prepared by wet spinning.…”

Section: Introductionmentioning

confidence: 97%

Preparation and oxygen permeation of U‐shaped perovskite hollow‐fiber membranes

et al. 2011

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The oxygen permeation of dense U-shaped perovskite hollow-fiber membranes based on Ba 0.5 Sr 0.5 Co 0.8 Fe 0.2 O 3Àd prepared by a phase inversion spinning process is reported. The perovskite hollow fibers with totally dense wall were obtained with the outer diameter of 1.147 mm and the inner diameter of 0.691 mm. The dependences of the oxygen permeation on the air flow rate on the shell side, the helium flow rate on the core side, the oxygen partial pressures, and the operating temperatures were experimentally investigated. According to the Wagner theory, it follows that the oxygen transport through the U-shaped hollow-fiber membrane is controlled by both surface reaction and bulk diffusion at the temperature ranges of 750-950 C. High oxygen permeation flux of 3.0 ml/(min cm 2 ) was kept for about 250 h at 950 C under the conditions of the air feed flow rate of 150 ml/min and the helium flow rate of 50 ml/min. V V C 2010 American Institute of Chemical Engineers AIChE J, 57: [975][976][977][978][979][980][981][982][983][984] 2011

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Section: Introductionmentioning

confidence: 97%

Preparation and oxygen permeation of U‐shaped perovskite hollow‐fiber membranes

et al. 2011

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“…(LSFC) at 1173 K using argon as sweep gas [11,12]. BSCF hollow fibre configuration improves fluxes up to 9.5 ml·cm at 1223 K [13,14].…”

Section: Introductionmentioning

confidence: 99%

Study of the Transport Properties of the Mixed Ionic Electronic Conductor Ce_1−xTb_xO_2−δ + Co (x = 0.1, 0.2) and Evaluation As Oxygen-Transport Membrane

2011

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“…Ba 0.5 Sr 0.5 Fe 0.8 Co 0.2 O 3-δ (BSCF) with the cubic perovskite structure has the last decade been considered as one of the most promising membrane materials for oxygen separation from air and as a cathode material for solid oxide fuel cells [1][2][3][4][5][6][7][8] . BSCF is a derivative of the cubic perovskite SrFe 0.8 Co 0.2 O 3-δ (SCF), formed by partial substitution of Sr with Ba to stabilize the cubic perovskite crystal structure while retaining a high concentration of oxygen vacancies.…”

Section: Introductionmentioning

confidence: 99%

High temperature X-ray diffraction and thermo-gravimetrical analysis of the cubic perovskite Ba_0.5Sr_0.5Co_0.8Fe_0.2O_3−δ under different atmospheres

et al. 2015

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ARTICLE This journal is © The Royal Society of Chemistry 2013Dalton Trans., 2013, 00, 1-3 | 1 (BSCF) with the cubic perovskite structure is known to be metastable at low temperature in oxidizing atmosphere. Here, the thermal and chemical expansion of BSCF were studied by in situ high temperature powder X-ray diffraction and thermo-gravimetrical analysis (TGA) in partial pressure of oxygen ranging from inert atmosphere (~10 -4 bar) to 10 bar O 2 . The BSCF powder, heat treated at 1000 ºC and quenched to ambient prior to the analysis, was shown to oxidize in oxidizing atmosphere before thermal reduction took place. With decreasing partial pressure of oxygen the initial oxidation was suppressed and only reduction of Co/Fe and loss of oxygen were observed in inert atmosphere. The thermal expansion of BSCF in different atmospheres was determined from the thermal evolution of the cubic unit cell parameter, demonstrating that the thermal expansion of BSCF depends on the atmosphere. Chemical expansion of BSCF was also estimated based on the diffraction data and thermo-gravimetrical analysis. A hexagonal polymorph BSCF, coexisting with the cubic polymorph, was observed to form above 600 ºC during heating. The formation of the hexagonal polymorph was driven by oxidation, and the unit cell of cubic BSCF was shown to decrease with increasing amount of hexagonal BSCF formed. The hexagonal BSCF polymorph disappeared upon further heating, accompanied with an expansion of the unit cell of the cubic BSCF.

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Ba_0.5Sr_0.5Co_0.8Fe_0.2O_3‐δ ceramic hollow‐fiber membranes for oxygen permeation

Cited by 94 publications

References 30 publications

Preparation and oxygen permeation of U‐shaped perovskite hollow‐fiber membranes

Preparation and oxygen permeation of U‐shaped perovskite hollow‐fiber membranes

Study of the Transport Properties of the Mixed Ionic Electronic Conductor Ce_1−xTb_xO_2−δ + Co (x = 0.1, 0.2) and Evaluation As Oxygen-Transport Membrane

High temperature X-ray diffraction and thermo-gravimetrical analysis of the cubic perovskite Ba_0.5Sr_0.5Co_0.8Fe_0.2O_3−δ under different atmospheres

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Ba0.5Sr0.5Co0.8Fe0.2O3‐δ ceramic hollow‐fiber membranes for oxygen permeation

Cited by 94 publications

References 30 publications

Preparation and oxygen permeation of U‐shaped perovskite hollow‐fiber membranes

Preparation and oxygen permeation of U‐shaped perovskite hollow‐fiber membranes

Study of the Transport Properties of the Mixed Ionic Electronic Conductor Ce1−xTbxO2−δ + Co (x = 0.1, 0.2) and Evaluation As Oxygen-Transport Membrane

High temperature X-ray diffraction and thermo-gravimetrical analysis of the cubic perovskite Ba0.5Sr0.5Co0.8Fe0.2O3−δ under different atmospheres

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Ba_0.5Sr_0.5Co_0.8Fe_0.2O_3‐δ ceramic hollow‐fiber membranes for oxygen permeation

Study of the Transport Properties of the Mixed Ionic Electronic Conductor Ce_1−xTb_xO_2−δ + Co (x = 0.1, 0.2) and Evaluation As Oxygen-Transport Membrane

High temperature X-ray diffraction and thermo-gravimetrical analysis of the cubic perovskite Ba_0.5Sr_0.5Co_0.8Fe_0.2O_3−δ under different atmospheres