Preparation and Oxygen Permeability of Ba-In-Based Oxides Co-Doped  with Sr, La and Fe

Yusuke AIZUMI; Hitoshi TAKAMURA; Atsunori KAMEGAWA; Masuo OKADA

doi:10.14852/jcersjsuppl.112.0.S724.0

Journal of the Ceramic Society of Japan, Supplement 112-1, PacRim5 Special Issue

Session ID : 9

DOI https://doi.org/10.14852/jcersjsuppl.112.0.S724.0

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Host: The Ceramic Society of Japan

Co-host: Iketani Science and Technology Foundation, International Ceramic Federation, Commemorative Organization for the Japan World Exposition '70, The American Ceramic Society, The Australasian Ceramic Society, The Chinese Ceramic Society, The Korean Ceramic Society, Joint Research Consortium of Synergy Ceramics/Fine Ceramics Research Association, Nanotechnology Researchers Network Center of Japan, The Special Coordination Funds for Promoting Science and Technology, Japan National Tourist Organization, Aichi Prefectural Government, CASIO SCIENCE PROMOTION FOUNDATION, DAIKO FOUNDATION, Nagoya Convention and Visitors Bureau, The Asahi Glass Foundation, The Kao Foundation For Arts And Sciences, The Murata Science Foundation, The Ogasawara Foundation for the Promotion of Science & Engineering, ASAHI GLASS CO., LTD. Research Center, CENTRAL GLASS CO., LTD., ELECTRIC GLASS INDUSTRY ASSOCIATION OF JAPAN (EGAJ), Hattori Company, Ltd., Hitachi Research Laboratory, Hitachi, Ltd., HOYA CORPORATION, INAX Corporation, ITOCHU CERATECH CORP., Japan Cement Association, KYOCERA Corporation, KYUSHU REFRACTORIES CO., LTD., MINO CERAMIC CO., LTD., Murata Manufacturing Co., Ltd., NGK INSULATORS LTD., NGK SPARK PLUG CO., LTD., NICHIAS Corporation, NIKKO COMPANY, Nippon Electric Glass Co., Ltd., Nippon Sheet Glass Co., Ltd., NORITAKE CO., LIMITED, Tokuyama Corporation, TOTO LTD.

Papers

Preparation and Oxygen Permeability of Ba-In-Based Oxides Co-Doped with Sr, La and Fe

Yusuke AIZUMI, Hitoshi TAKAMURA, Atsunori KAMEGAWA, Masuo OKADA

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Keywords: Mixed oxygen ionic-electronic conductor, Oxygen permeable ceramics, Methane conversion

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Abstract

The preparation and oxygen permeability of (Ba_0.33Sr_0.17La_0.5)₂(In_1-xFe_x)₂O_5+δ mixed conductors, where 0.4=x=0.9, have been investigated. Single-phase samples were prepared by a citrate-based liquid-mix technique. An XRD analysis revealed that the samples had a cubic perovskite-type structure regardless of the Fe content. The lattice parameter linearly decreased from 0.407 nm for x=0.4 to 0.394 nm for x=0.9 with increasing the Fe content. (Ba_0.33Sr_0.17La_0.5)₂(In_0.4Fe_0.6)₂O_5+δ with a membrane thickness of 0.2 mm showed a maximum oxygen flux density of 10.8 μmol•cm^-2•s^-1 at 1000°C under a methane conversion test. The P(O₂) dependence of electrical conductivity indicated that p-type electronic conduction was dominant for these mixed conductors.

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