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

• PRODUCT ENGINEERING AND CHEMICAL TECHNOLOGY • Previous Articles     Next Articles

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

LIANG Jie1, MAO Lingling1, LI Li2, YUAN Wenhui1   

  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
  • 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)

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

梁杰1, 毛玲玲1, 李莉2, 袁文辉1   

  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
  • 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)

Abstract: Zr-substituted,Tm-doped SrCeO3(SrCe0.95-xZrxTm0.05O3-δ,0≤x≤0.40)were synthesized via citrate complexing method,and the membranes of SrCe0.95-xZrxTm0.05O3-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 SrCe0.75Zr0.20Tm0.05O3-δmembranes was carried out using gas permeation setup.Hydrogen permeation fluxes(JH2) of the SrCe0.75Zr0.20Tm0.05O3-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(JH2)obtained in this paper are slightly lower than that of SrCe0.95Tm0.05O3-δ on the same orders,and Zr doping can increase chemical stability of the SrCe0.75Zr0.20Tm0.05O3-δ membranes.

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

摘要: Zr-substituted,Tm-doped SrCeO3(SrCe0.95-xZrxTm0.05O3-δ,0≤x≤0.40)were synthesized via citrate complexing method,and the membranes of SrCe0.95-xZrxTm0.05O3-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 SrCe0.75Zr0.20Tm0.05O3-δmembranes was carried out using gas permeation setup.Hydrogen permeation fluxes(JH2) of the SrCe0.75Zr0.20Tm0.05O3-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(JH2)obtained in this paper are slightly lower than that of SrCe0.95Tm0.05O3-δ on the same orders,and Zr doping can increase chemical stability of the SrCe0.75Zr0.20Tm0.05O3-δ membranes.

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