Dual-Ion Conducting Lithium Zirconate-Based Membranes for High Temperature CO_2 Separation
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概要
- 論文の詳細を見る
The processing and characterization of a novel membrane system for CO2 separation is described. The membrane was made of lithium zirconate (Li2ZrO3), which has a potential to react reversibly with CO2 molecules at high temperatures. The reaction of Li2ZrO3 with CO2 essentially produced two electrolyte materials in situ. One of them, Li2CO3, is capable of carrying CO2, and the other, ZrO2, is a well-known O2 ion conductor. This combination of selective reaction and electrolyte conduction permitted the design of a membrane system capable of selective CO2 steady-state permeation across the membrane. Using the membrane, a separation factor of 4.9 was measured between CO2 and CH4 gas molecules at a temperature of 600°C. The measured separation value of 4.9 is very high compared with the Knudsen diffusion limit of 0.6 and therefore clearly supports the use of the membrane system for selective separation of CO2.
- 社団法人 化学工学会の論文
- 2005-05-01
著者
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NAKAO Shin-ichi
Department of Chemical System Engineering, Faculty of Engineering, The University of Tokyo
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Nakao Shin-ichi
Department Of Chemical Engineering Faculty Of Engineering University Of Tokyo
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YAMAGUCHI Takeo
Department of Chemistry, Faculty of Science, Fukuoka University
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Yamaguchi Takeo
Department Of Chemical System Engineering The University Of Tokyo
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NAIR BALAGOPAL
Department of Chemical System Engineering, The University of Tokyo
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Nair Balagopal
Department Of Chemical System Engineering University Of Tokyo
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Nair Balagopal
Department Of Chemical System Engineering The University Of Tokyo
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KAWAMURA Hiroto
Department of Chemical System Engineering, University of Tokyo
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NAKAGAWA Kazuaki
Corporate R&D Center, Toshiba Corporation
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Nakagawa Kazuaki
Corporate R&d Center Toshiba Corporation
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Nakao Shin-ichi
Department Of Anesthesia Kyoto University Hospital
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Yamaguchi Takeo
Department Of Chemical System Engineering University Of Tokyo
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Kawamura Hiroto
Department Of Chemical System Engineering University Of Tokyo
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