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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