Preparation of dual-phase composite BaCe0.8Y0.2O3/Ce0.8Y0.2O2 and its application for hydrogen permeation |
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| Affiliation: | 1. College of Chemical Engineering, North China University of Science and Technology, Tangshan 063009, PR China;2. Hebei Province Key Laboratory of Inorganic and Non-Metal Materials, Tangshan 063009, PR China;1. Biomaterials Research Group, Department of Materials Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran;2. Department of Pharmaceutics, Faculty of Pharmacy and Novel Drug Delivery Systems Research Centre, Isfahan University of Medical Sciences, Isfahan 81746-73461, Iran;3. Dental Materials Research Center, Isfahan University of Medical Sciences, Isfahan, Iran;4. Department of Engineering, Virginia Commonwealth University, Richmond, VA 23284, USA;1. Laboratory of Electrochemical Devices Based on Solid Oxide Proton Electrolytes, Institute of High Temperature Electrochemistry, Yekaterinburg 620990, Russia;2. Department of Mechanical Engineering, School of Engineering, University of Thessaly, Pedion Areos, Volos 383 34, Greece;1. School of Chemical Engineering, Shandong University of Technology, Zibo 255049, China;2. Department of Chemical Engineering, Tianjin Polytechnic University, Tianjin 300387, China;3. Department of Chemical Engineering, Curtin University of Technology, Perth, 6102 Western Australia, Australia;4. Faculty of Engineering, Computing and Science, Swinburne University of Technology, Jalan Simpang Tiga, 93350 Kuching, Sarawak, Malaysia;1. High-Temperature Energy Materials Research Center, Korea Institute of Science and Technology, Seoul 136-791, Republic of Korea;2. Department of Materials Science and Engineering, Korea University, Seoul 136-701, Republic of Korea;1. Instituto de Tecnología Química (Universidad Politécnica de Valencia – Consejo Superior de Investigaciones Científicas), Avenida de los Naranjos s/n, 46022 Valencia, Spain;2. Coorstek Membrane Sciences, Forskningsparken, Gaustadalleèn 21, NO-0349 Oslo, Norway;1. Department of Mechanical Engineering, University of South Carolina, Columbia, SC 29208, USA;2. Department of Materials Science and Engineering, Clemson University, Clemson, SC 29634, USA |
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| Abstract: | Dual-phase ceramic membranes composed of BaCe0.8Y0.2O3 (BCY) and Ce0.8Y0.2O2 (CYO) were successfully synthesized by solid state reaction method for hydrogen permeation. The influences of the BCY/CYO volume ratios on phase composition, microstructure, chemical stability and electrical property were investigated. The hydrogen permeation of the dual-phase composite was characterized as a function of temperature and feed side hydrogen partial pressure. The results showed that there was no reaction between the two constituent oxides observed under the preparation conditions. The dual-phase composite with different BCY/CYO volume ratios after sintering at 1550 °C exhibited dense structure, as well as good stability in 4% H2/Ar, wet Ar and pure CO2 atmosphere. The conductivity of the dual-phase composite increased with the content of CYO increasing and 30BCY–70CYO exhibited the highest total conductivity of 2.6×10?2 S cm?1 at 800 °C in 4% H2/Ar. The hydrogen permeability of 30BCY–70CYO sample was improved as the temperature and the hydrogen partial pressure in feed gas increased. The hydrogen permeation flux of 1.7 μmol cm?2 s?1 was achieved at 850 °C. |
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| Keywords: | C Electrical conductivity Dual phase composite Hydrogen permeation |
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