应用化学 ›› 1996, Vol. 0 ›› Issue (6): 72-74.

• 研究简报 • 上一篇    下一篇

钴铬复合氧化物超细微粒的制备、结构及其催化性能

刘常坤, 申永存, 奚强   

  1. 武汉化工学院精细化工系 武汉 430073
  • 收稿日期:1996-02-16 修回日期:1996-07-02 出版日期:1996-12-10 发布日期:1996-12-10

Preparation,Structure and Catalytic Property of Cobalt Chromium Mixed Oxide Ultrafine Particle

Liu Changkun, Shen Yongcun, Xi Qiang   

  1. Department of Fine Chemistry, Wuhan Institute of Chemical Technology, Wuhan 430073
  • Received:1996-02-16 Revised:1996-07-02 Published:1996-12-10 Online:1996-12-10

摘要: 2,3,6-三甲苯酚(TMP)的氧化产物之一2,3,6-三甲苯酿(TMQ)是合成维生素E的关键中间体.目前工业规模生产是用MnO2氧化法.但存在反应周期长和环境污染等问题.用氧气直接催化氧化法具有研究开发价值.

关键词: 钴铬复合氧化物, 超细微粒, 催化剂, 制备, 结构, 催化氧化, 三甲苯酚, 三甲苯醌

Abstract: Cobalt chromium mixed oxide ultrafine particle catalysts were prepared by coprecipitation and sol-gel methods. The catalytic properties of catalysts for catalytic oxidation of 2,3,6-trimethylphenol to trimethyl-p-benzoquinone were investigated.It is shown that the catalyst with Co/Cr=1 prepared by sol-gel method is the best.The structures of catalysts were characterized by TEM,XRD and DTA-TG.The mixed oxide is amorphous under 350℃.The thermal stability of this amorphous catalyst is higher than that of Co3O4 and Cr2O3.

Key words: cobalt chromium mixed oxide, ultrafine particle, catalyst, preparation, structure, catalytic oxidation, trimethylphenol, trimethyl-p-benzoquinone