Citation: Wen Hui Yuan, Ling Ling Mao, Li Li. Novel SrCe_0.75Zr_0.20Tm_0.05O_3-δ membrane for hydrogen separation[J]. Chinese Chemical Letters, ;2010, 21(3): 369-372. doi: 10.1016/j.cclet.2009.11.002 shu

Novel SrCe_0.75Zr_0.20Tm_0.05O_3-δ membrane for hydrogen separation

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

Received Date: 25 May 2009

Fund Project: This work was supported by Joint Funds of NSFC-Guangdong (No. U0834004), NSFC (No. 20976057) and Guangdong Provincial Natural Science Funding (No. 06025657).

Dense ceramic membranes with protonic and electronic conductivity have attracted considerable interest in recent years. In this paper, the powders of SrCe_0.75Zr_0.20Tm_0.05O_3-δ were synthesized via the liquid citrate method, and the membranes of SrCe_0.75Zr_0.20Tm_0.05O_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_0.75Zr_0.20Tm_0.05O_3-δ membranes was carried out using gas permeation setup at 900℃. Hydrogen permeation flux of SrCe_0.75Zr_0.20Tm_0.05O_3-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 SrCe_0.75Tm_0.05O_3-δ and Zr doping can increase mechanical strength of SrCe_0.75Zr_0.20Tm_0.05O_3-δ membranes and the resistance to reducing circumstance.
- Hydrogen permeation,
- Ceramic membrane,
- Perovskite,
- Mixed conductor
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