Studies of the Structures and TPR Properties of Co/ZrO2Catalyst

Abstract

Abstract: Co/ZrO₂catalysts were prepared by impregnation met hod.Their structures and TPR properties were st udied by XRD, TPR, and COoxidation as a probe reaction.The results showed that There was a strong interaction between Co and ZrO₂, which rest rained The growth of fine par-ticles of zirconium oxide and The phase transformation of t-ZrO₂to m-ZrO₂By calcination at ahigh temperat ure, partof The cobaltoxide formed a solid solution with zirconium oxide.The formof cobaltoxide is Co₃O₄for Co/ZrO₂catalyst.In addition, The interaction between Co and ZrO₂raised The dispersion of cobaltoxide on ZrO₂The activity of CO oxidation increased with The in-creasing of Coloading.

Key words: Co/ZrO₂catalyst, Structure, CO oxidation, TPR

CLC Number:

O643.1

TrendMD:

YU Tie-Ming, ZHOU Ren-Xian, TANG Zhong-Min, ZHENG Xiao-Ming . Studies of the Structures and TPR Properties of Co/ZrO₂Catalyst[J]. Chem. J. Chinese Universities, 1999, 20(1): 123.

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Studies of the Structures and TPR Properties of Co/ZrO₂Catalyst

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