Influence of the size of doping ion on phase stability and oxygen permeability of SrCo0.8Fe0.2O3-δ oxide

Liang Tan; Li Yang; Xuehong Gu; Wanqin Jin; Lixiong Zhang; Nanping Xu

doi:10.1016/j.memsci.2003.10.019

Influence of the size of doping ion on phase stability and oxygen permeability of SrCo_0.8Fe_0.2O_3-δ oxide

Liang Tan, Li Yang, Xuehong Gu, Wanqin Jin, Lixiong Zhang, Nanping Xu

College of Chemical Engineering

Nanjing Tech University

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

29 Scopus citations

Abstract

The compounds of SrCo_0.8Fe_0.2O_3-δ (SCF) doped with Mg²⁺, Ca²⁺, Sr²⁺, Ba ²⁺, Ti⁴⁺ and Zr⁴⁺ are synthesized by conventional solid-state reaction. The phase stabilities and oxygen permeabilites of these synthesized oxides are investigated. It is found that the doping Mg²⁺, Ca²⁺, Sr²⁺ and Ba ²⁺ totally dissolve into the SCF unit cell, while SrTiO₃ and SrZrO₃ phases form when SCF is doped with Ti⁴⁺ and Zr⁴⁺, respectively. A possible mechanism of the doping behavior is proposed to interpret the structure transformation of the SCF unit cell. Phase stability increases directly with the size of the doping ion when SCF is doped with the ions in the same group. However, the influence of the size of the doping ion on the oxygen permeation behavior is negligible for the membranes doped with the ions in the same group.

Original language	English
Pages (from-to)	21-27
Number of pages	7
Journal	Journal of Membrane Science
Volume	230
Issue number	1-2
DOIs	https://doi.org/10.1016/j.memsci.2003.10.019
State	Published - 15 Feb 2004

Keywords

Doping ion
Oxygen permeability
Perovskite oxides
Phase stability
Size

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title = "Influence of the size of doping ion on phase stability and oxygen permeability of SrCo0.8Fe0.2O3-δ oxide",

abstract = "The compounds of SrCo0.8Fe0.2O3-δ (SCF) doped with Mg2+, Ca2+, Sr2+, Ba 2+, Ti4+ and Zr4+ are synthesized by conventional solid-state reaction. The phase stabilities and oxygen permeabilites of these synthesized oxides are investigated. It is found that the doping Mg2+, Ca2+, Sr2+ and Ba 2+ totally dissolve into the SCF unit cell, while SrTiO3 and SrZrO3 phases form when SCF is doped with Ti4+ and Zr4+, respectively. A possible mechanism of the doping behavior is proposed to interpret the structure transformation of the SCF unit cell. Phase stability increases directly with the size of the doping ion when SCF is doped with the ions in the same group. However, the influence of the size of the doping ion on the oxygen permeation behavior is negligible for the membranes doped with the ions in the same group.",

keywords = "Doping ion, Oxygen permeability, Perovskite oxides, Phase stability, Size",

author = "Liang Tan and Li Yang and Xuehong Gu and Wanqin Jin and Lixiong Zhang and Nanping Xu",

year = "2004",

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doi = "10.1016/j.memsci.2003.10.019",

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T1 - Influence of the size of doping ion on phase stability and oxygen permeability of SrCo0.8Fe0.2O3-δ oxide

AU - Tan, Liang

AU - Yang, Li

AU - Gu, Xuehong

AU - Jin, Wanqin

AU - Zhang, Lixiong

AU - Xu, Nanping

PY - 2004/2/15

Y1 - 2004/2/15

N2 - The compounds of SrCo0.8Fe0.2O3-δ (SCF) doped with Mg2+, Ca2+, Sr2+, Ba 2+, Ti4+ and Zr4+ are synthesized by conventional solid-state reaction. The phase stabilities and oxygen permeabilites of these synthesized oxides are investigated. It is found that the doping Mg2+, Ca2+, Sr2+ and Ba 2+ totally dissolve into the SCF unit cell, while SrTiO3 and SrZrO3 phases form when SCF is doped with Ti4+ and Zr4+, respectively. A possible mechanism of the doping behavior is proposed to interpret the structure transformation of the SCF unit cell. Phase stability increases directly with the size of the doping ion when SCF is doped with the ions in the same group. However, the influence of the size of the doping ion on the oxygen permeation behavior is negligible for the membranes doped with the ions in the same group.

AB - The compounds of SrCo0.8Fe0.2O3-δ (SCF) doped with Mg2+, Ca2+, Sr2+, Ba 2+, Ti4+ and Zr4+ are synthesized by conventional solid-state reaction. The phase stabilities and oxygen permeabilites of these synthesized oxides are investigated. It is found that the doping Mg2+, Ca2+, Sr2+ and Ba 2+ totally dissolve into the SCF unit cell, while SrTiO3 and SrZrO3 phases form when SCF is doped with Ti4+ and Zr4+, respectively. A possible mechanism of the doping behavior is proposed to interpret the structure transformation of the SCF unit cell. Phase stability increases directly with the size of the doping ion when SCF is doped with the ions in the same group. However, the influence of the size of the doping ion on the oxygen permeation behavior is negligible for the membranes doped with the ions in the same group.

KW - Doping ion

KW - Oxygen permeability

KW - Perovskite oxides

KW - Phase stability

KW - Size

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DO - 10.1016/j.memsci.2003.10.019

M3 - 文章

AN - SCOPUS:0742271729

SN - 0376-7388

VL - 230

SP - 21

EP - 27

JO - Journal of Membrane Science

JF - Journal of Membrane Science

IS - 1-2

ER -

Influence of the size of doping ion on phase stability and oxygen permeability of SrCo_0.8Fe_0.2O_3-δ oxide

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Keywords

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