Perovskite-type B-site Bi-doped ceramic membranes for oxygen separation

Z. Shao; Y. Cong; G. Xiong; S. Sheng; W. Yang

doi:10.1007/BF02886194

Perovskite-type B-site Bi-doped ceramic membranes for oxygen separation

Z. Shao, Y. Cong, G. Xiong, S. Sheng, W. Yang

CAS - Dalian Institute of Chemical Physics

科研成果: 期刊稿件 › 文章 › 同行评审

5 引用（Scopus）

摘要

Novel mixed conducting oxides, B-site Bi-doped perovskites were exploited and synthesized. Cubic perovskite structures were formed for BaBi_0.2Co_yFe_0.8-yO_3-δ (y≤0.4) and BaBi_xCO_0.2Fe_0.8-xO_3-δ(x=0.1 - 0.5). The materials exhibited considerable high oxygen permeability at high temperature. The oxygen permeation flux of BaBi_0.2Co_0.35Fe_0.45O_3-δ membrane reached about 0.77 × 10^-6 mol/cm² · s under an air/helium oxygen partial pressure gradient at 900°C, which was much higher than that of other bismuth-contained mixed conducting membranes. The permeation fluxes of the materials increased with the increase of cobalt content, but no apparent simple relationship was found with the bismuth content. The materials also demonstrated excellent reversibility of oxygen adsorption and desorption. Stable time-related oxygen permeation fluxes were found for BaBi_0.2Co_0.35Fe_0.45O_3-δ and BaBi_0.3Co_0.2Fe_0.5O_3-δ membranes at 875°C.

源语言	英语
页（从-至）	889-893
页数	5
期刊	Chinese Science Bulletin
卷	45
期	10
DOI	https://doi.org/10.1007/BF02886194
出版状态	已出版 - 2000
已对外发布	是

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title = "Perovskite-type B-site Bi-doped ceramic membranes for oxygen separation",

abstract = "Novel mixed conducting oxides, B-site Bi-doped perovskites were exploited and synthesized. Cubic perovskite structures were formed for BaBi0.2CoyFe0.8-yO3-δ (y≤0.4) and BaBixCO0.2Fe0.8-xO3-δ(x=0.1 - 0.5). The materials exhibited considerable high oxygen permeability at high temperature. The oxygen permeation flux of BaBi0.2Co0.35Fe0.45O3-δ membrane reached about 0.77 × 10-6 mol/cm2 · s under an air/helium oxygen partial pressure gradient at 900°C, which was much higher than that of other bismuth-contained mixed conducting membranes. The permeation fluxes of the materials increased with the increase of cobalt content, but no apparent simple relationship was found with the bismuth content. The materials also demonstrated excellent reversibility of oxygen adsorption and desorption. Stable time-related oxygen permeation fluxes were found for BaBi0.2Co0.35Fe0.45O3-δ and BaBi0.3Co0.2Fe0.5O3-δ membranes at 875°C.",

keywords = "BiO, Inorganic membrane, Mixed conductor, Oxygen permeation, Perovskite",

author = "Z. Shao and Y. Cong and G. Xiong and S. Sheng and W. Yang",

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T1 - Perovskite-type B-site Bi-doped ceramic membranes for oxygen separation

AU - Shao, Z.

AU - Cong, Y.

AU - Xiong, G.

AU - Sheng, S.

AU - Yang, W.

PY - 2000

Y1 - 2000

N2 - Novel mixed conducting oxides, B-site Bi-doped perovskites were exploited and synthesized. Cubic perovskite structures were formed for BaBi0.2CoyFe0.8-yO3-δ (y≤0.4) and BaBixCO0.2Fe0.8-xO3-δ(x=0.1 - 0.5). The materials exhibited considerable high oxygen permeability at high temperature. The oxygen permeation flux of BaBi0.2Co0.35Fe0.45O3-δ membrane reached about 0.77 × 10-6 mol/cm2 · s under an air/helium oxygen partial pressure gradient at 900°C, which was much higher than that of other bismuth-contained mixed conducting membranes. The permeation fluxes of the materials increased with the increase of cobalt content, but no apparent simple relationship was found with the bismuth content. The materials also demonstrated excellent reversibility of oxygen adsorption and desorption. Stable time-related oxygen permeation fluxes were found for BaBi0.2Co0.35Fe0.45O3-δ and BaBi0.3Co0.2Fe0.5O3-δ membranes at 875°C.

AB - Novel mixed conducting oxides, B-site Bi-doped perovskites were exploited and synthesized. Cubic perovskite structures were formed for BaBi0.2CoyFe0.8-yO3-δ (y≤0.4) and BaBixCO0.2Fe0.8-xO3-δ(x=0.1 - 0.5). The materials exhibited considerable high oxygen permeability at high temperature. The oxygen permeation flux of BaBi0.2Co0.35Fe0.45O3-δ membrane reached about 0.77 × 10-6 mol/cm2 · s under an air/helium oxygen partial pressure gradient at 900°C, which was much higher than that of other bismuth-contained mixed conducting membranes. The permeation fluxes of the materials increased with the increase of cobalt content, but no apparent simple relationship was found with the bismuth content. The materials also demonstrated excellent reversibility of oxygen adsorption and desorption. Stable time-related oxygen permeation fluxes were found for BaBi0.2Co0.35Fe0.45O3-δ and BaBi0.3Co0.2Fe0.5O3-δ membranes at 875°C.

KW - BiO

KW - Inorganic membrane

KW - Mixed conductor

KW - Oxygen permeation

KW - Perovskite

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U2 - 10.1007/BF02886194

DO - 10.1007/BF02886194

M3 - 文章

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SN - 1001-6538

VL - 45

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EP - 893

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JF - Chinese Science Bulletin

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ER -

Perovskite-type B-site Bi-doped ceramic membranes for oxygen separation

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