Chinese Journal of Catalysis

Chinese Journal of Catalysis ›› 2009, Vol. 30 ›› Issue (10): 986-990.

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Hydrogen Permeation and Chemical Stability of a Ni-BaCe0.6Zr0.2Nd0.2O3-δ Cer-met Membrane

ZHAN Shijing1,2, ZHU Xuefeng1,*, WANG Weiping 1, JI Baofeng1,2, YANG Weishen 1,*, LIN Liwu 1   

  1. 1 State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China 2 Graduate University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2009-10-25 Online:2009-10-25 Published:2013-06-06

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Abstract: A new Ni-BaCe0.6Zr0.2Nd0.2O3-δ (Ni-BZCN6) cermet membrane was investigated to separate hydrogen from hydrogen-containing mixtures. Hydrogen permeation properties of the membrane and permeation stability under atmospheres containing CO2 and H2O were investigated under different conditions. Hydrogen permeation flux increases with increasing temperature. When the feed gas was moistened by 3% H2O, the flux was about 2–5 times that not moistened. It reached 0.073 cm3/(min cm2) at 900 °C when a wet feed gas of 80% H2/He was used. After 100 h operation under 30% CO2, the membrane still keeps a steady permeation flux. These results suggest that the Ni-BZCN6 membrane is suitable for hydrogen separation from mixed gas containing H2 and CO2.

Key words: hydrogen separation membrane, hydrogen permeation property;cermet membrane;mixed protonic and electronic conductor;stability