Oxygen Exchange Reaction between CO_2-CO Gas and Molten Oxide Containing Iron Oxide
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概要
- 論文の詳細を見る
Oxygen exchange reaction rates between CO2–CO gas and molten oxides containing iron oxide have been measured by isotope exchange technique with 18O at 1 773 K with PCO2/PCO=1. Measured results represent that the oxygen exchange reaction rates show the maximum values at the beginning of the reaction and sharply decrease within approximately 20 s, and then gradually decrease with the reaction time proceeds. These changes indicate that the rate-limiting step would change from the dissociative adsorption of oxygen on the surface of molten oxide in the initial stage of reaction to the mass transfer of oxide ion from the surface to the inside of molten oxide in the following stage. Based on the kinetic analysis of the oxygen exchange process, CO2 dissociation rate constant, CO2 re-formation rate constant and the mass transfer coefficient of oxide ion in molten oxides were calculated for the FeOx–CaO and FeOx–SiO2 systems. Addition of CaO and SiO2 to molten oxide increases and decreases the oxygen exchange reaction rate, respectively.
- 社団法人 日本鉄鋼協会の論文
- 2006-07-15
著者
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MATSUURA Hiroyuki
Department of Physics, Niigata University
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Tsukihashi Fumitaka
Graduate School of Frontier Sciences, The University of Tokyo
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TSUKIHASHI Fumitaka
Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of To
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Matsuura Hiroyuki
Department Of Advanced Materials Science Graduate School Of Frontier Sciences The University Of Toky
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Tsukihashi Fumitaka
Department Of Advanced Materials Graduate School Of Frontier Science The University Of Tokyo
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Matsuura Hiroyuki
Center For Iron And Steelmaking Research Department Of Materials Science And Engineering Carnegie Me
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HU Xiaojun
Department of Physical Chemistry, School of Metallurgical and Ecological Engineering, University of
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Tsukihashi F
Department Of Advanced Materials Science Graduate School Of Frontier Sciences The University Of Toky
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Hu Xiaojun
Department Of Physical Chemistry School Of Metallurgical And Ecological Engineering University Of Sc
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Hu Xiaojun
Department Of Chemistry Tongji University
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Tsukihashi Fumitaka
Department Of Advanced Material Science The University Of Tokyo
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