The mechanism of reduction of cobalt by hydrogen

Hsin Yu Lin, Yu Wen Chen

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
85
發行號1
DOIs
出版狀態已出版 - 15 5月 2004

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