钴铜铝水滑石类化合物的合成及其催化氧化对甲酚 Ⅱ.对甲酚的催化氧化及机理  

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

作　　者：刘玉敏[1] 朱凯征[1] 刘社田[1] 叶兴凯[1] 吴越[1] 

机构地区：[1]中国科学院长春应用化学研究所

出　　处：《应用化学》1998年第2期15-19,共5页Chinese Journal of Applied Chemistry

摘　　要：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 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 Co2+ and Co3+ in the catalysts with spinel structure act as an active center in the reaction.

关 键 词：钴铜铝碳酸盐 氧化 对甲酚 对羟基苯甲醛 催化剂 

分 类 号：TQ224.1[化学工程—有机化工]