A Fe/Nb co-doped Sr(Co0.8Fe0.1Nb0.1)O3-δ perovskite oxide for air separation: Structural, sintering and oxygen permeating properties

被引：10
作者：
Lu, Hui [1 ]
Son, Sou Hwan [2 ]
Kim, Jong Pyo [2 ]
Park, Jung Hoon [2 ]
机构：
[1] Henan Univ Technol, Sch Chem & Chem Engn, Dept Appl Chem, Zhengzhou 450001, Peoples R China
[2] Korea Inst Energy Res, Greenhouse Gas Res Ctr, Climate Change Technol Res Div, Taejon 305343, South Korea
来源：
MATERIALS LETTERS | 2011年 / 65卷 / 04期
关键词：
Perovskite; Membrane; Crystal structure; Sintering; Oxygen permeation; BA0.5SR0.5CO0.8FE0.2O3-DELTA MEMBRANE; CERAMIC MEMBRANES; STABILITY; PERMEABILITY; PERFORMANCE; TRANSPORT; TEMPERATURE; PRESSURE; METHANE; REACTOR;
D O I：
10.1016/j.matlet.2010.11.013
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The novel Fe/Nb co-doped Sr(Co0.8Fe0.1Nb0.1)O3-delta oxide was synthesized by the solid-state reaction method. Structural and sintering properties of the Sr(Co0.8Fe0.1Nb0.1)O3-delta oxide/ceramic were studied by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The oxygen permeation flux of the Sr (Co0.8Fe0.1Nb0.1)O3-delta membrane was measured to be 1.80 ml min(-1) cm(-2) under an air/helium gradient at 950 degrees C, and the membrane also shows good oxygen permeation stability. The results demonstrate that the structural stability of the Fe/Nb co-doped Sr(Co0.8Fe0.1Nb0.1)O3-delta oxide is improved significantly compared to those of the Sr(Co0.8Fe0.2)O3-delta and (Ba0.5Sr0.5)(Co0.8Fe0.2)O3-delta oxides. The incorporation of the Fe/Nb cations in the SrCoO3-delta oxide result in the improved stability of Sr(Co0.8Fe0.1Nb0.1)O3-delta. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：702 / 704
页数：3
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