Citation: Ming Ya Cai, Hui Xia Luo, Zhong Li, Armin Feldhoff, Jiirgen Caro, Hai Hui Wang. Preparation and hydrogen permeation properties of BaCe_0.95Nd_0.050_3-δ membranes[J]. Chinese Chemical Letters, ;2008, 19(10): 1256-1259. doi: 10.1016/j.cclet.2008.06.054 shu

Preparation and hydrogen permeation properties of BaCe_0.95Nd_0.050_3-δ membranes

a The Key Lab of Enhanced Heat Transfer and Energy Conservation of Chinese Ministry of Education. School of Chemistry & Chemical Engineering, South China University of Technology, Wushan Road, Guangzhou 510640, China;
b Institute of Physical Chemistry and Electrochemistry, Leibniz University Hannover, Callinstr. 3-3 A, D-30179 Hannover, Germany

Received Date: 31 March 2008

Fund Project: The authors greatly acknowledge the financial support by Natural Science Foundation of Guangdong Province (No. 7300769), by Program for New Century Excellent Talents in University (No. NECT-07-0307) and by Fok Ying Tung Education Foundation (No. 114019).

Dense mixed proton and electron conducting membrane made of BaCe_0.95Nd_0.05O_3-δ(BCNd5)was prepared by pressing followed by sintering.X-ray diffraction(XRD)was used to characterize the phase structure of both the powder and the sintered membranes.The microstructure of the sintered membranes was studied by scanning electron microscopy(SEM).Hydrogen permeation through the BCNd5 membrane was studied using a high temperature permeator.The hydrogen permeation fluxes under wet conditions are higher than those under dry conditions,which is due to H⁺ hopping via surface OH groups.At 925℃,a hydrogen permeation flux of 0.02 mL/min cm² was obtained under wet condition.which recommends BCNd5 as a potential material for hydrogen-selective membranes.
- Hydrogen,
- Mixed conductor,
- Perovskite,
- Membrane
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