| Novel SrCe_(0.75)Zr_(0.20)Tm_(0.05)O_(3-δ) membrane for hydrogen separation |
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| 作者姓名： | Wen Hui Yuan Ling Ling Mao Li Li |
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| 作者单位： | a School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China;b College of Environmental Science and Engineering, South China University of Technology, Guangzhou 510640, China |
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| 基金项目： | supported by Joint Funds of NSFC-Guangdong(No.U0834004);;NSFC(No.20976057);;Guangdong Provincial Natural Science Funding(No.06025657) |
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| 摘 要： | <正>Dense ceramic membranes with protonic and electronic conductivity have attracted considerable interest in recent years.In this paper,the powders of SrCe_(0.75)Zr_(0.20)Tm_(0.05)O_(3-δ) were synthesized via the liquid citrate method,and the membranes of SrCe_(0.75)Zr_(0.20)Tm_(0.05)O_(3-δ) were prepared by pressing followed by sintering.X-ray diffraction(XRD) was used to characterize the phase structure of both the powder and sintered membrane.The microstructure of the sintered membranes was studied by scanning electron microscopy(SEM).Hydrogen permeation through the SrCe_(0.75)Zr_(0.20)Tm_(0.05)O_(3-δ) membranes was carried out using gas permeation setup at 900℃.Hydrogen permeation flux of SrCe_(0.75)Zr_(0.20)Tm_(0.05)O_(3-δ) membrane reaches up to 0.042 mL/ min cm~2 at H_2 partial pressure of 0.4 atm.The hydrogen permeation fluxes obtained in this paper are similar to that of SrCe_(0.95)Tm_(0.05)O_(3-δ),and Zr doping can increase mechanical strength of SrCe_(0.75)Zr_(0.20)Tm_(0.05)O_(3-δ) membranes and the resistance to reducing circumstance.
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| 收稿时间： | 25 May 2009 |
Novel SrCe0.75Zr0.20Tm0.05O3-δ membrane for hydrogen separation |
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| Wen Hui Yuan,Ling Ling Mao,Li Li.Novel SrCe0.75Zr0.20Tm0.05O3-δ membrane for hydrogen separation[J].Chinese Chemical Letters,2010,21(3):369-372. |
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| Authors: | Wen Hui Yuan Ling Ling Mao Li Li |
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| Institution: | a School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China;b College of Environmental Science and Engineering, South China University of Technology, Guangzhou 510640, China |
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| Abstract: | Dense ceramic membranes with protonic and electronic conductivity have attracted considerable interest in recent years. In this paper, the powders of SrCe0.75Zr0.20Tm0.05O3-δ were synthesized via the liquid citrate method, and the membranes of SrCe0.75Zr0.20Tm0.05O3-δ were prepared by pressing followed by sintering. X-ray diffraction (XRD) was used to characterize the phase structure of both the powder and sintered membrane. The microstructure of the sintered membranes was studied by scanning electron microscopy (SEM). Hydrogen permeation through the SrCe0.75Zr0.20Tm0.05O3-δ membranes was carried out using gas permeation setup at 900 ℃. Hydrogen permeation flux of SrCe0.75Zr0.20Tm0.05O3-δ membrane reaches up to 0.042 mL/min-cm2 at H2 partial pressure of 0.4 atm. The hydrogen permeation fluxes obtained in this paper are similar to that of SrCe0.95Tm0.05O3-δ, and Zr doping can increase mechanical strength of SrCe0.75Zr0.20Tm0.05O3-δ membranes and the resistance to reducing circumstance. |
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| Keywords: | Hydrogen permeation Ceramic membrane Perovskite Mixed conductor |
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