Effect of Fe content on properties of Ba0.5Sr0.5CoxFe 1-xO3-δ mixed conducting membranes

Zongping Shao; Guoxing Xiong; Hui Dong; Jianhua Tong; You Cong; Weishen Yang

Effect of Fe content on properties of Ba₀.₅Sr₀.₅Co_xFe _1-xO_3-δ mixed conducting membranes

Zongping Shao, Guoxing Xiong, Hui Dong, Jianhua Tong, You Cong, Weishen Yang

CAS - Dalian Institute of Chemical Physics

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

5 Scopus citations

Abstract

Mixed oxygen-ionic and electronic conducting Ba₀.₅Sr₀.₅Co_xFe _1-xO_3-δ (BSCFO) oxide powders were synthesized by using a combined EDTA-citrate complexing method. The effect of Fe content on the properties of the material, such as phase structure, phase stability, thermochemical stability and oxygen permeability, were investigated with combined XRD, O₂-TPD, H₂-TPR techniques and oxygen permeation measurement. For the material under investigation (cursive Greek chi = 0.2∼0.8), they all demonstrate the pure phase of cubic perovskite structure at high temperature and within the oxygen partial pressure of 2.13 × 10⁴∼0.1 Pa. The increase in Fe content is beneficial to the phase stability of BSCFO at lower temperature. However, the oxygen permeability of the material decreases with the increase of Fe content, being likely due to the increase in surface exchange kinetics of the membrane in the rate determination of the oxygen permeation process with the increase of Fe content.

Original language	English
Pages (from-to)	504
Number of pages	1
Journal	Chinese Journal of Catalysis
Volume	21
Issue number	5
State	Published - 2000
Externally published	Yes

Keywords

Inorganic membrane
Mixed conductor
Oxygen separation
Partial oxidation of methane
Perovskite

Cite this

@article{71e8af9fa7604c79b85863321dec24a1,

title = "Effect of Fe content on properties of Ba0.5Sr0.5CoxFe 1-xO3-δ mixed conducting membranes",

abstract = "Mixed oxygen-ionic and electronic conducting Ba0.5Sr0.5CoxFe 1-xO3-δ (BSCFO) oxide powders were synthesized by using a combined EDTA-citrate complexing method. The effect of Fe content on the properties of the material, such as phase structure, phase stability, thermochemical stability and oxygen permeability, were investigated with combined XRD, O2-TPD, H2-TPR techniques and oxygen permeation measurement. For the material under investigation (cursive Greek chi = 0.2∼0.8), they all demonstrate the pure phase of cubic perovskite structure at high temperature and within the oxygen partial pressure of 2.13 × 104∼0.1 Pa. The increase in Fe content is beneficial to the phase stability of BSCFO at lower temperature. However, the oxygen permeability of the material decreases with the increase of Fe content, being likely due to the increase in surface exchange kinetics of the membrane in the rate determination of the oxygen permeation process with the increase of Fe content.",

keywords = "Inorganic membrane, Mixed conductor, Oxygen separation, Partial oxidation of methane, Perovskite",

author = "Zongping Shao and Guoxing Xiong and Hui Dong and Jianhua Tong and You Cong and Weishen Yang",

year = "2000",

language = "英语",

volume = "21",

pages = "504",

journal = "Chinese Journal of Catalysis",

issn = "1872-2067",

publisher = "Science China Press",

number = "5",

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TY - JOUR

T1 - Effect of Fe content on properties of Ba0.5Sr0.5CoxFe 1-xO3-δ mixed conducting membranes

AU - Shao, Zongping

AU - Xiong, Guoxing

AU - Dong, Hui

AU - Tong, Jianhua

AU - Cong, You

AU - Yang, Weishen

PY - 2000

Y1 - 2000

N2 - Mixed oxygen-ionic and electronic conducting Ba0.5Sr0.5CoxFe 1-xO3-δ (BSCFO) oxide powders were synthesized by using a combined EDTA-citrate complexing method. The effect of Fe content on the properties of the material, such as phase structure, phase stability, thermochemical stability and oxygen permeability, were investigated with combined XRD, O2-TPD, H2-TPR techniques and oxygen permeation measurement. For the material under investigation (cursive Greek chi = 0.2∼0.8), they all demonstrate the pure phase of cubic perovskite structure at high temperature and within the oxygen partial pressure of 2.13 × 104∼0.1 Pa. The increase in Fe content is beneficial to the phase stability of BSCFO at lower temperature. However, the oxygen permeability of the material decreases with the increase of Fe content, being likely due to the increase in surface exchange kinetics of the membrane in the rate determination of the oxygen permeation process with the increase of Fe content.

AB - Mixed oxygen-ionic and electronic conducting Ba0.5Sr0.5CoxFe 1-xO3-δ (BSCFO) oxide powders were synthesized by using a combined EDTA-citrate complexing method. The effect of Fe content on the properties of the material, such as phase structure, phase stability, thermochemical stability and oxygen permeability, were investigated with combined XRD, O2-TPD, H2-TPR techniques and oxygen permeation measurement. For the material under investigation (cursive Greek chi = 0.2∼0.8), they all demonstrate the pure phase of cubic perovskite structure at high temperature and within the oxygen partial pressure of 2.13 × 104∼0.1 Pa. The increase in Fe content is beneficial to the phase stability of BSCFO at lower temperature. However, the oxygen permeability of the material decreases with the increase of Fe content, being likely due to the increase in surface exchange kinetics of the membrane in the rate determination of the oxygen permeation process with the increase of Fe content.

KW - Inorganic membrane

KW - Mixed conductor

KW - Oxygen separation

KW - Partial oxidation of methane

KW - Perovskite

UR - http://www.scopus.com/inward/record.url?scp=0040487052&partnerID=8YFLogxK

M3 - 文章

AN - SCOPUS:0040487052

SN - 1872-2067

VL - 21

SP - 504

JO - Chinese Journal of Catalysis

JF - Chinese Journal of Catalysis

IS - 5

ER -

Effect of Fe content on properties of Ba₀.₅Sr₀.₅Co_xFe _1-xO_3-δ mixed conducting membranes

Abstract

Keywords

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