Tin-doped perovskite mixed conducting membrane for efficient air separation

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	Tin-doped perovskite mixed conducting membrane for efficient air separation
	Zhang, Zhenbao 1; Chen, Yubo 1,2; Tade, Moses O.2; Hao, Yong 3; Liu, Shaomin 2; Shao, Zongping 1,2
刊名	JOURNAL OF MATERIALS CHEMISTRY A
	2014-07-07
卷号	2 期号:25 页码:9666-9674
英文摘要	In this study, we propose a new tin-doped perovskite oxide, BaCo0.7Fe0.2Sn0.1O3-delta (BCFSn0.1), as a promising alternative material for a ceramic oxygen-permeating membrane. A high energy ball milling-assisted solid-state reaction method is used for the material synthesis. The effect of tin doping on the structure, electrical conductivity, oxygen activity, oxygen bulk diffusivity and surface exchange properties of the materials, sintering behaviour, and oxygen permeability of the related membranes is systematically investigated via transmission electron microscopy (TEM), environmental scanning electron microscopy (E-SEM), thermo-gravimetric analysis (TGA), oxygen temperature-programmed desorption (O-2-TPD) and electrical conductivity relaxation (ECR), and oxygen permeation test. The minor substitution of B-site cations in BaCo0.7Fe0.3O3-delta (BCF) with tin is found to be highly effective in improving oxygen flux of the resultant membrane. Under an oxygen gradient created by air/helium, BCFSn0.1 membrane reaches fluxes of 9.62 x 10(-7) and 3.55 x 10(-7) mol m(-2) s(-1) Pa-1 [STP], respectively, at 900 and 700 degrees C, in sharp contrast with the flux values of 4.42 x 10(-7) and 2.84 x 10(-8) mol m(-2) s(-1) Pa-1 for BCF membrane with the same thickness of 1 mm. Favorable permeation stability is also demonstrated for the tin-doped membrane, and oxygen bulk diffusion is the main rate-limiting step for oxygen permeation, indicating a further increase in fluxes by reducing the membrane thickness.
WOS标题词	Science & Technology ; Physical Sciences ; Technology
类目[WOS]	Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
研究领域[WOS]	Chemistry ; Energy & Fuels ; Materials Science
关键词[WOS]	OXYGEN PERMEATION MEMBRANE ; CERAMIC MEMBRANES ; BACO0.7FE0.3-XNBXO3-DELTA PEROVSKITE ; PERMEABILITY ; MICROSTRUCTURE ; TEMPERATURE ; PERFORMANCE ; STABILITY ; OXIDATION
收录类别	SCI
语种	英语
WOS记录号	WOS:000337774100030
公开日期	2015-12-22
内容类型	期刊论文
源URL	[http://ir.etp.ac.cn/handle/311046/106046]
专题	工程热物理研究所_中国科学院工程热物理所（论文库）_期刊论文（SCI）
作者单位	1.Nanjing Tech Univ, Coll Chem & Chem Engn, State Key Lab Mat Oriented Chem Engn, Nanjing 210009, Jiangsu, Peoples R China 2.Curtin Univ, Dept Chem Engn, Perth, WA 6845, Australia 3.Chinese Acad Sci, Inst Engn Thermophys, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Zhenbao,Chen, Yubo,Tade, Moses O.,et al. Tin-doped perovskite mixed conducting membrane for efficient air separation[J]. JOURNAL OF MATERIALS CHEMISTRY A,2014,2(25):9666-9674.
APA	Zhang, Zhenbao,Chen, Yubo,Tade, Moses O.,Hao, Yong,Liu, Shaomin,&Shao, Zongping.(2014).Tin-doped perovskite mixed conducting membrane for efficient air separation.JOURNAL OF MATERIALS CHEMISTRY A,2(25),9666-9674.
MLA	Zhang, Zhenbao,et al."Tin-doped perovskite mixed conducting membrane for efficient air separation".JOURNAL OF MATERIALS CHEMISTRY A 2.25(2014):9666-9674.