The mechanism of reduction of cobalt by hydrogen

Hsin Yu Lin; Yu Wen Chen

doi:10.1016/j.matchemphys.2003.12.028

The mechanism of reduction of cobalt by hydrogen

Hsin Yu Lin, Yu Wen Chen

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

152 引文斯高帕斯（Scopus）

摘要

Cobalt catalysts supported on silica were prepared by an impregnating method and characterized using temperature-programmed reduction (TPR). H ₂ was used as the reduction agents. The two-stage reduction was observed. Co₃O₄ was reduced to CoO and then reduced to metallic Co. The activation energies for the two reduction steps of cobalt oxide are 94.43 and 82.97kJmol^-1, respectively. The simulation by reduction models of the TPR patterns presents well-fitting of two-dimensional nucleation according to Avarmi-Erofeev model for the reduction of Co ₃O₄ to CoO and unimolecular model for the reduction of CoO to Co.

原文	???core.languages.en_GB???
頁（從 - 到）	171-175
頁數	5
期刊	Materials Chemistry and Physics
卷	85
發行號	1
DOIs	https://doi.org/10.1016/j.matchemphys.2003.12.028
出版狀態	已出版 - 15 5月 2004

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10.1016/j.matchemphys.2003.12.028

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title = "The mechanism of reduction of cobalt by hydrogen",

abstract = "Cobalt catalysts supported on silica were prepared by an impregnating method and characterized using temperature-programmed reduction (TPR). H 2 was used as the reduction agents. The two-stage reduction was observed. Co3O4 was reduced to CoO and then reduced to metallic Co. The activation energies for the two reduction steps of cobalt oxide are 94.43 and 82.97kJmol-1, respectively. The simulation by reduction models of the TPR patterns presents well-fitting of two-dimensional nucleation according to Avarmi-Erofeev model for the reduction of Co 3O4 to CoO and unimolecular model for the reduction of CoO to Co.",

keywords = "Cobalt, Kinetic mechanism, Temperature-programmed reduction",

author = "Lin, {Hsin Yu} and Chen, {Yu Wen}",

note = "Funding Information: This research was supported by the National Science Council, Taiwan, ROC.",

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T1 - The mechanism of reduction of cobalt by hydrogen

AU - Lin, Hsin Yu

AU - Chen, Yu Wen

N1 - Funding Information: This research was supported by the National Science Council, Taiwan, ROC.

PY - 2004/5/15

Y1 - 2004/5/15

N2 - Cobalt catalysts supported on silica were prepared by an impregnating method and characterized using temperature-programmed reduction (TPR). H 2 was used as the reduction agents. The two-stage reduction was observed. Co3O4 was reduced to CoO and then reduced to metallic Co. The activation energies for the two reduction steps of cobalt oxide are 94.43 and 82.97kJmol-1, respectively. The simulation by reduction models of the TPR patterns presents well-fitting of two-dimensional nucleation according to Avarmi-Erofeev model for the reduction of Co 3O4 to CoO and unimolecular model for the reduction of CoO to Co.

AB - Cobalt catalysts supported on silica were prepared by an impregnating method and characterized using temperature-programmed reduction (TPR). H 2 was used as the reduction agents. The two-stage reduction was observed. Co3O4 was reduced to CoO and then reduced to metallic Co. The activation energies for the two reduction steps of cobalt oxide are 94.43 and 82.97kJmol-1, respectively. The simulation by reduction models of the TPR patterns presents well-fitting of two-dimensional nucleation according to Avarmi-Erofeev model for the reduction of Co 3O4 to CoO and unimolecular model for the reduction of CoO to Co.

KW - Cobalt

KW - Kinetic mechanism

KW - Temperature-programmed reduction

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U2 - 10.1016/j.matchemphys.2003.12.028

DO - 10.1016/j.matchemphys.2003.12.028

M3 - 期刊論文

AN - SCOPUS:1842432113

VL - 85

SP - 171

EP - 175

JO - Materials Chemistry and Physics

JF - Materials Chemistry and Physics

SN - 0254-0584

IS - 1

ER -

The mechanism of reduction of cobalt by hydrogen

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