Protonic and Electronic Conductivities and Hydrogen Permeation of SrCe0.95-xZrxTm0.05O3-δ(0≤x≤0.40)Membrane

›› 2010, Vol. 18 ›› Issue (3): 506-510.

Protonic and Electronic Conductivities and Hydrogen Permeation of SrCe_0.95-xZr_xTm_0.05O_3-δ(0≤x≤0.40)Membrane

梁杰¹, 毛玲玲¹, 李莉², 袁文辉¹

1. School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China;
2. College of Environmental Science and Engineering, South China University of Technology, Guangzhou 510640, China

收稿日期:2009-08-07 修回日期:2009-11-12 出版日期:2010-06-28 发布日期:2010-06-28
通讯作者: YUAN Wenhui,E-mail:cewhyuan@scut.edu.cn
基金资助:
Supported by the Joint Funds of NSFC-Guangdong(U0834004);the National Natural Science Foundation of China(20976057);the Natural Science Foundation of Guangdong Province(06025657)

Protonic and Electronic Conductivities and Hydrogen Permeation of SrCe_0.95-xZr_xTm_0.05O_3-δ(0≤x≤0.40)Membrane

LIANG Jie¹, MAO Lingling¹, LI Li², YUAN Wenhui¹

1. School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China;
2. College of Environmental Science and Engineering, South China University of Technology, Guangzhou 510640, China

Received:2009-08-07 Revised:2009-11-12 Online:2010-06-28 Published:2010-06-28
Supported by:
Supported by the Joint Funds of NSFC-Guangdong(U0834004);the National Natural Science Foundation of China(20976057);the Natural Science Foundation of Guangdong Province(06025657)

摘要/Abstract

摘要： Zr-substituted,Tm-doped SrCeO₃(SrCe_0.95-xZr_xTm_0.05O_3-δ,0≤x≤0.40)were synthesized via citrate complexing method,and the membranes of SrCe_0.95-xZr_xTm_0.05O_3-δwere prepared by pressing followed by sintering. X-ray diffraction(XRD)was used to characterize the phase structure of sintered membrane.The microstructure of the sintered membranes was studied by scanning electron microscopy(SEM).Protonic and electronic conductivities were measured under different circumstance.Hydrogen permeation through the SrCe_0.75Zr_0.20Tm_0.05O_3-δmembranes was carried out using gas permeation setup.Hydrogen permeation fluxes(J_H₂) of the SrCe_0.75Zr_0.20Tm_0.05O_3-δ membrane reach up to 0.042 ml·min^-1·cm^-2 at H₂ partial pressure of 0.4×10^-1 Pa at 900℃.The hydrogen permeation fluxes(J_H₂)obtained in this paper are slightly lower than that of SrCe0.95Tm0.05O_3-δ on the same orders,and Zr doping can increase chemical stability of the SrCe_0.75Zr_0.20Tm_0.05O_3-δ membranes.

关键词: zirconium dopant, mixed conductivity, hydrogen permeation, perovskite

Abstract: Zr-substituted,Tm-doped SrCeO₃(SrCe_0.95-xZr_xTm_0.05O_3-δ,0≤x≤0.40)were synthesized via citrate complexing method,and the membranes of SrCe_0.95-xZr_xTm_0.05O_3-δwere prepared by pressing followed by sintering. X-ray diffraction(XRD)was used to characterize the phase structure of sintered membrane.The microstructure of the sintered membranes was studied by scanning electron microscopy(SEM).Protonic and electronic conductivities were measured under different circumstance.Hydrogen permeation through the SrCe_0.75Zr_0.20Tm_0.05O_3-δmembranes was carried out using gas permeation setup.Hydrogen permeation fluxes(J_H₂) of the SrCe_0.75Zr_0.20Tm_0.05O_3-δ membrane reach up to 0.042 ml·min^-1·cm^-2 at H₂ partial pressure of 0.4×10^-1 Pa at 900℃.The hydrogen permeation fluxes(J_H₂)obtained in this paper are slightly lower than that of SrCe0.95Tm0.05O_3-δ on the same orders,and Zr doping can increase chemical stability of the SrCe_0.75Zr_0.20Tm_0.05O_3-δ membranes.

Key words: zirconium dopant, mixed conductivity, hydrogen permeation, perovskite

梁杰, 毛玲玲, 李莉, 袁文辉. Protonic and Electronic Conductivities and Hydrogen Permeation of SrCe_0.95-xZr_xTm_0.05O_3-δ(0≤x≤0.40)Membrane[J]. , 2010, 18(3): 506-510.

LIANG Jie, MAO Lingling, LI Li, YUAN Wenhui. Protonic and Electronic Conductivities and Hydrogen Permeation of SrCe_0.95-xZr_xTm_0.05O_3-δ(0≤x≤0.40)Membrane[J]. , 2010, 18(3): 506-510.

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Protonic and Electronic Conductivities and Hydrogen Permeation of SrCe_0.95-xZr_xTm_0.05O_3-δ(0≤x≤0.40)Membrane

Protonic and Electronic Conductivities and Hydrogen Permeation of SrCe_0.95-xZr_xTm_0.05O_3-δ(0≤x≤0.40)Membrane

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