Preparation, Characterization and CO Oxidation of Nanometer Co3O4

Abstract

Abstract: Various nanometer Co₃O₄samples were prepared and the catalytic performance of COoxidation were examined. It was found that the activities of the catalysts were greatly changed with variation of the preparation methods and pretreatment conditions. Among the samples tested, Co₃O₄prepared by using dodecylbenzene sulfonic acid sodium salt(DBS) as the surfactant, calcined at 300℃ showed the highest activity and it was able to oxidize completely CO even at -78℃ . Characterization of these samples by XRD and BET means showed that the catalytic acitivity increased with the decrease of the average particle size, suggests that the average particle size of nanometer Co₃O₄samples is the main controlling factor of the catalytic activity.

Key words: Nanometer Co₃O₄, Carbon monooxide, Catalytic oxidation

CLC Number:

O643.1

TrendMD:

JIA Ming-Jun, ZHANG Wen-Xiang, TAO Yu-Guo, WANG Gui-Ying, CUI Xiang-Hao, ZHANG Chun-Lei, WU Tong-Hao, DONG Guo-Qiang, LI Xue-Mei. Preparation, Characterization and CO Oxidation of Nanometer Co₃O₄[J]. Chem. J. Chinese Universities, 1999, 20(4): 637.

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Preparation, Characterization and CO Oxidation of Nanometer Co₃O₄

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