应用化学 ›› 1998, Vol. 0 ›› Issue (2): 15-19.

• 研究论文 • 上一篇    下一篇

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

刘玉敏, 朱凯征, 刘社田, 叶兴凯, 吴越   

  1. 中国科学院长春应用化学研究所 长春130022
  • 收稿日期:1997-09-24 修回日期:1997-12-10 出版日期:1998-04-10 发布日期:1998-04-10

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   

  1. 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

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。

关键词: 钴铜铝碳酸盐, 催化氧化, 对甲酚, 对羟基苯甲醛, 反应机理

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