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考察了前文制得的水滑石及其焙烧产物在对甲酚氧化反应中的催化性能，发现经水滑石焙烧得到的具有尖晶石结构的复合氧化物比没有焙烧的具有水滑石结构的以及由单纯氧化物机械混合的样品具有更高的活性．同时由ＣｏＣｕＡｌ水滑石（３∶１∶１）经４５０℃焙烧后制得的样品具有最佳的催化活性，对羟基苯甲醛的收率可高达９８．４％，在此基础上，对此反应建议了可能的反应机理．
The catalytic performance of the hydrotalcite and its calcined product obtained in the previous paragraph in the oxidation reaction of p-cresol was investigated. It was found that the composite oxide having a spinel structure obtained by calcination with hydrotalcite was more stable than the non-calcined composite oxide having the hydrotalcite structure, Specimens that are mechanically mixed with simple oxides have higher activity. At the same time, the samples prepared by calcining CoCuAl hydrotalcite (3:1:1) at 450 ℃ have the best catalytic activity and the yield of p-hydroxybenzaldehyde can reach as high as 98.4%. On the basis of this, Suggested a possible reaction mechanism.