Composite Ni–Ba(Zr0.1Ce0.7Y0.2)O3 membrane for hydrogen separation |
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| Affiliation: | 1. School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA;2. Energy Technology Division, Argonne National Laboratory, Argonne, IL 60439, USA;1. State Key Laboratory of Separation Membranes and Membrane Processes, Department of Chemical Engineering, Tianjin Polytechnic University, Tianjin 300387, China;2. Department of Chemical Engineering, Curtin University, Perth, WA 6102, Australia;3. School of Chemical Engineering, Shandong University of Technology, Zibo 255049, China;1. School of Chemistry and Chemical Engineering, South China University of Technology, 381 Wushan Road, 510640 Guangzhou, China;2. Institute of Physical Chemistry and Electrochemistry, Leibniz University of Hannover, Callinstrasse 22, 30167 Hannover, Germany;3. School of Chemical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia;1. State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemistry & Chemical Engineering, Nanjing University of Technology, Nanjing 210009, China;2. Department of Chemical Engineering, Curtin University, Perth, WA 6458, Australia |
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| Abstract: | Composite membranes consisting of Ni metal and Ba(Zr0.1Ce0.7Y0.2)O3 (or Ni–BZCY7) have been developed for separation of hydrogen from gas mixtures to replace Ni–BCY20 (Ni–BaCe0.8Y0.2O3), which has poor stability in CO2 and H2O-containing atmosphere. Hydrogen fluxes through these cermet membranes were measured as a function of temperature, membrane thickness, and partial pressure of hydrogen in various atmospheres. Results indicated that the Ni–BZCY7 membrane is chemically stable and display high hydrogen permeability. A maximum flux of 0.805 cm3 min?1 cm2 was obtained for a dense cermet membrane of 266-μm-thick at 900 °C using 100% H2 as the feed gas and 100 ppm H2/N2 as the sweep gas. The stable performance of Ni–BZCY7 cermet membrane during exposure to a wet gas containing 30% CO2 for about 80 h indicated that it is promising for practical applications. |
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