高等学校化学学报 ›› 1994, Vol. 15 ›› Issue (4): 584.

• 论文 • 上一篇    下一篇

不同反荷离子的Keggin结构钼磷酸盐的热稳定性及其对异丁醛催化氧化活性的影响

吴通好, 贾继飞, 朱莉, 王国甲, 杨洪茂, 姜玉子   

  1. 吉林大学化学系, 长春, 130023
  • 收稿日期:1993-06-08 修回日期:1993-11-15 出版日期:1994-04-24 发布日期:1994-04-24
  • 通讯作者: 吴通好,男,54岁,教授.
  • 作者简介:吴通好,男,54岁,教授.
  • 基金资助:

    中国石油化学工业总公司资助课题

Thermal Stability and Activity of Catalytic Oxidation of Isobutyraldehyde of Molybdophosphoric Salt with Keggin Structure Containing Different Equilibrium Cations

WU Tong-Hao, JIA Ji-Fei, ZHU Li, WANG Guo-Jia, YANG Hong-Mao, JIANG Yu-Zi   

  1. Department of Chemistry, Jilin University, Changchun, 130023
  • Received:1993-06-08 Revised:1993-11-15 Online:1994-04-24 Published:1994-04-24

摘要: 用共沉淀法制备了以Keggin结构为骨架的不同反荷离子钼磷酸盐,利用FTIR、XRD等手段进行了表征。结果表明,Li、Na、K、Cs分别作为反荷离子时的杂多酸盐的热稳定性依次增强,并考察了催化剂对异丁醛一步氧化制甲基丙烯酸的催化活性,其中Cs盐的催化活性最优。

关键词: Keggin结构钼磷酸盐, 反荷离子, 稳定性, 催化氧化, 异丁醛

Abstract: Molybdophosphoric acid with Keggin structure is an effective catalyst for oxidation reactions.As the central atom, coordinated atom and equilibrium atom in the molydophosphoric acid are displaced in a suitable manner, it exhibits increasing catalytic properties although the structure of the anion keeps unchanging, In this paper a series of Keggin molybdophosphoric acids containing different equilibrium cations were synthesized by a coprecipitation method.The prepared samples were characterized by means of FTIR, XRDand other techniques.Particularly the thermal stability of Li(Na,K, Cs)equilibrium molybdophosphoric salts were investigated.The catalytic acitivity over this series of samplers for one-step oxidation of isobutyraldehyde to produce methacrolic acid was measured as well.The experimental results indicate that Cs+ equilibrium molybdophosphoric salts is the best catalyst for the mentioned reaction.

Key words: Molybdophosphoric salt with Keggin structure, Equilibrium cation, Stability, Catalytic oxidation, Isobutyraldehyde

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