CoCuAl Hydrotalcite like Compounds:Synthesis and Use in the Catalytic Oxidation of p-Cresol Ⅱ.Catalytic Oxidation of p-Cresol

Chinese Journal of Applied Chemistry ›› 1998, Vol. 0 ›› Issue (2): 15-19.

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CoCuAl Hydrotalcite like Compounds:Synthesis and Use in the Catalytic Oxidation of p-Cresol Ⅱ.Catalytic Oxidation of p-Cresol

Liu Yumin, Zhu Kaizheng, Liu Shetian, Yie Xingkai, Wu Yue

Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022

Received:1997-09-24 Revised:1997-12-10 Published:1998-04-10 Online:1998-04-10

Abstract

Abstract: The oxidation of p-cresol using CoCuAl hydrotalcite-like compounds(HTLc) has been investigated. The calcinated HTLcs were found to have a higher activity than the uncalcinated ones, as well as the simple mixed oxides.The products from calcination at 450 ℃ with Co:Cu:Al=3:1:1 showed an optimum activity, giving 98.4% yield of p-hydroxy benzaldehyde. A possible mechanism has been proposed, assuming that both Co²⁺ and Co³⁺ in the catalysts with spinel structure act as an active center in the reaction.

Key words: CoCuAlCO₃, catalytic oxidation, p-cresol, p-hydroxybenzaldethyde, reaction mechanism

Liu Yumin, Zhu Kaizheng, Liu Shetian, Yie Xingkai, Wu Yue. CoCuAl Hydrotalcite like Compounds:Synthesis and Use in the Catalytic Oxidation of p-Cresol Ⅱ.Catalytic Oxidation of p-Cresol[J]. Chinese Journal of Applied Chemistry, 1998, 0(2): 15-19.

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CoCuAl Hydrotalcite like Compounds:Synthesis and Use in the Catalytic Oxidation of p-Cresol Ⅱ.Catalytic Oxidation of p-Cresol

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