The mechanism of reduction of iron oxide by hydrogen

Hsin Yu Lin; Yu Wen Chen; Chiuping Li

doi:10.1016/S0040-6031(02)00478-1

The mechanism of reduction of iron oxide by hydrogen

Hsin Yu Lin, Yu Wen Chen, Chiuping Li

化學工程與材料工程學系

研究成果: 雜誌貢獻 › 期刊論文 › 同行評審

268 引文斯高帕斯（Scopus）

摘要

Precipitated iron oxide samples were characterized using temperature-programmed reduction. H₂ was used as the reduction agents. The two-stage reduction was observed: Fe₂O₃ was reduced to Fe₃O₄ and then reduced to metallic Fe. The activation energy for the two reduction steps of iron oxide are 89.13 and 70.412 (kJ mol^-1), respectively. The simulation by reduction models of the TPR patterns presents well fitting of unimolecular model for Fe₂O₃ → Fe₃O₄ reduction and two-dimensional nucleation according to Avarmi-Erofeev model for Fe₃O₄ → Fe.

原文	???core.languages.en_GB???
頁（從 - 到）	61-67
頁數	7
期刊	Thermochimica Acta
卷	400
發行號	1-2
DOIs	https://doi.org/10.1016/S0040-6031(02)00478-1
出版狀態	已出版 - 17 4月 2003

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10.1016/S0040-6031(02)00478-1

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title = "The mechanism of reduction of iron oxide by hydrogen",

abstract = "Precipitated iron oxide samples were characterized using temperature-programmed reduction. H2 was used as the reduction agents. The two-stage reduction was observed: Fe2O3 was reduced to Fe3O4 and then reduced to metallic Fe. The activation energy for the two reduction steps of iron oxide are 89.13 and 70.412 (kJ mol-1), respectively. The simulation by reduction models of the TPR patterns presents well fitting of unimolecular model for Fe2O3 → Fe3O4 reduction and two-dimensional nucleation according to Avarmi-Erofeev model for Fe3O4 → Fe.",

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AU - Lin, Hsin Yu

AU - Chen, Yu Wen

AU - Li, Chiuping

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N2 - Precipitated iron oxide samples were characterized using temperature-programmed reduction. H2 was used as the reduction agents. The two-stage reduction was observed: Fe2O3 was reduced to Fe3O4 and then reduced to metallic Fe. The activation energy for the two reduction steps of iron oxide are 89.13 and 70.412 (kJ mol-1), respectively. The simulation by reduction models of the TPR patterns presents well fitting of unimolecular model for Fe2O3 → Fe3O4 reduction and two-dimensional nucleation according to Avarmi-Erofeev model for Fe3O4 → Fe.

AB - Precipitated iron oxide samples were characterized using temperature-programmed reduction. H2 was used as the reduction agents. The two-stage reduction was observed: Fe2O3 was reduced to Fe3O4 and then reduced to metallic Fe. The activation energy for the two reduction steps of iron oxide are 89.13 and 70.412 (kJ mol-1), respectively. The simulation by reduction models of the TPR patterns presents well fitting of unimolecular model for Fe2O3 → Fe3O4 reduction and two-dimensional nucleation according to Avarmi-Erofeev model for Fe3O4 → Fe.

KW - Iron oxide

KW - Kinetic mechanism

KW - Temperature-programmed reduction

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VL - 400

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EP - 67

JO - Thermochimica Acta

JF - Thermochimica Acta

IS - 1-2

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The mechanism of reduction of iron oxide by hydrogen

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