Multichannel mixed-conducting hollow fiber membranes for oxygen separation

Jiawei Zhu; Ziye Dong; Zhengkun Liu; Kai Zhang; Guangru Zhang; Wanqin Jin

doi:10.1002/aic.14471

Multichannel mixed-conducting hollow fiber membranes for oxygen separation

Jiawei Zhu, Ziye Dong, Zhengkun Liu, Kai Zhang, Guangru Zhang, Wanqin Jin

COLLEGE OF CHEMICAL ENGINEERING

Nanjing Tech University

Research output: Contribution to journal › Article › peer-review

37 Scopus citations

Abstract

Significance: A multichannel mixed-conducting hollow fiber (MMCHF) membrane, 0.5 wt % Nb₂O₅-doped SrCo_0.8 Fe_0.2O_3-δ (SCFNb), has been successfully prepared by phase inversion and sintering technique. The crystalline structure, morphology, sintering behavior, breaking load, and oxygen permeability of the MMCHF membrane were studied systematically. The MMCHF membrane with porous-dense asymmetrical microstructure was obtained with the outer diameter of 2.46 mm and inner tetra-bore diameter of 0.80 mm. The breaking load of the MMCHF membrane was 3-6 times that of conventional single-channel mixed-conducting hollow fiber membrane. The MMCHF membrane showed a high oxygen flux which was about two times that of symmetric capillary membrane at similar conditions as well as a good long-term stability under low oxygen partial pressure atmosphere. This work proposed a new configuration for the mixed-conducting membranes, combining advantages of multichannel tubular membrane technology and conventional hollow fibers.

Original language	English
Pages (from-to)	1969-1976
Number of pages	8
Journal	AIChE Journal
Volume	60
Issue number	6
DOIs	https://doi.org/10.1002/aic.14471
State	Published - Jun 2014

Keywords

Long-term stability
Mechanical strength
Multichannel hollow fiber membrane
Oxygen permeation
Sintering behavior

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10.1002/aic.14471

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title = "Multichannel mixed-conducting hollow fiber membranes for oxygen separation",

abstract = "Significance: A multichannel mixed-conducting hollow fiber (MMCHF) membrane, 0.5 wt % Nb2O5-doped SrCo0.8 Fe0.2O3-δ (SCFNb), has been successfully prepared by phase inversion and sintering technique. The crystalline structure, morphology, sintering behavior, breaking load, and oxygen permeability of the MMCHF membrane were studied systematically. The MMCHF membrane with porous-dense asymmetrical microstructure was obtained with the outer diameter of 2.46 mm and inner tetra-bore diameter of 0.80 mm. The breaking load of the MMCHF membrane was 3-6 times that of conventional single-channel mixed-conducting hollow fiber membrane. The MMCHF membrane showed a high oxygen flux which was about two times that of symmetric capillary membrane at similar conditions as well as a good long-term stability under low oxygen partial pressure atmosphere. This work proposed a new configuration for the mixed-conducting membranes, combining advantages of multichannel tubular membrane technology and conventional hollow fibers.",

keywords = "Long-term stability, Mechanical strength, Multichannel hollow fiber membrane, Oxygen permeation, Sintering behavior",

author = "Jiawei Zhu and Ziye Dong and Zhengkun Liu and Kai Zhang and Guangru Zhang and Wanqin Jin",

year = "2014",

month = jun,

doi = "10.1002/aic.14471",

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T1 - Multichannel mixed-conducting hollow fiber membranes for oxygen separation

AU - Zhu, Jiawei

AU - Dong, Ziye

AU - Liu, Zhengkun

AU - Zhang, Kai

AU - Zhang, Guangru

AU - Jin, Wanqin

PY - 2014/6

Y1 - 2014/6

N2 - Significance: A multichannel mixed-conducting hollow fiber (MMCHF) membrane, 0.5 wt % Nb2O5-doped SrCo0.8 Fe0.2O3-δ (SCFNb), has been successfully prepared by phase inversion and sintering technique. The crystalline structure, morphology, sintering behavior, breaking load, and oxygen permeability of the MMCHF membrane were studied systematically. The MMCHF membrane with porous-dense asymmetrical microstructure was obtained with the outer diameter of 2.46 mm and inner tetra-bore diameter of 0.80 mm. The breaking load of the MMCHF membrane was 3-6 times that of conventional single-channel mixed-conducting hollow fiber membrane. The MMCHF membrane showed a high oxygen flux which was about two times that of symmetric capillary membrane at similar conditions as well as a good long-term stability under low oxygen partial pressure atmosphere. This work proposed a new configuration for the mixed-conducting membranes, combining advantages of multichannel tubular membrane technology and conventional hollow fibers.

AB - Significance: A multichannel mixed-conducting hollow fiber (MMCHF) membrane, 0.5 wt % Nb2O5-doped SrCo0.8 Fe0.2O3-δ (SCFNb), has been successfully prepared by phase inversion and sintering technique. The crystalline structure, morphology, sintering behavior, breaking load, and oxygen permeability of the MMCHF membrane were studied systematically. The MMCHF membrane with porous-dense asymmetrical microstructure was obtained with the outer diameter of 2.46 mm and inner tetra-bore diameter of 0.80 mm. The breaking load of the MMCHF membrane was 3-6 times that of conventional single-channel mixed-conducting hollow fiber membrane. The MMCHF membrane showed a high oxygen flux which was about two times that of symmetric capillary membrane at similar conditions as well as a good long-term stability under low oxygen partial pressure atmosphere. This work proposed a new configuration for the mixed-conducting membranes, combining advantages of multichannel tubular membrane technology and conventional hollow fibers.

KW - Long-term stability

KW - Mechanical strength

KW - Multichannel hollow fiber membrane

KW - Oxygen permeation

KW - Sintering behavior

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U2 - 10.1002/aic.14471

DO - 10.1002/aic.14471

M3 - 文章

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SN - 0001-1541

VL - 60

SP - 1969

EP - 1976

JO - AIChE Journal

JF - AIChE Journal

IS - 6

ER -

Multichannel mixed-conducting hollow fiber membranes for oxygen separation

Abstract

Keywords

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