应用化学 ›› 1998, Vol. 0 ›› Issue (1): 116-118.

• 研究论文 • 上一篇    

漆原钴法制备四羰基钴钠及羰基化反应

李光兴, 刘勇   

  1. 华中理工大学化学系 武汉 430074
  • 收稿日期:1997-07-10 修回日期:1997-10-06 出版日期:1998-02-10 发布日期:1998-02-10

Synthesis of Sodium Tetracarbonylcobaltate Using Urushibara-Co/CH3OH/CoCl2/CO and Its Application in Carbonylation

Li Guangxing, Liu Yong   

  1. Department of Chemistry, Huazhong University of Science and Technology, Wuhan 430074
  • Received:1997-07-10 Revised:1997-10-06 Published:1998-02-10 Online:1998-02-10

摘要: 羰基钴的传统制备方法[1]是在高温高压下,由合成气与钻盐反应制备出Co2(CO)4,再经某些化学处理方法制备Na[Co(CO)2]8,但其反应条件苛刻,操作手续繁杂,成本高,不利于大量推广应用.制备四碳基钻盐方法,还有KCN转化法[2], NaBH4还原法[3]等,但各种方法均有一定缺点.我们报道了Raney-Ni催化剂催化合成Na[Co(CO)4]的新方法[4,5].此方法收率高,反应条件温和,具有较好的应用前景,但仍存在Ni、Co分离的问题.进一步改进催化剂、降低成本、高效地合成Na[Co(C0)4]仍是解决问题的关键.为此,我们探讨了以漆原钻为催化剂在常温常压下合成Na[Co(CO)4]的新方法,并研究了其对氯节拨化合成苯乙酸的催化活性.

关键词: 四羰基钴钠, 漆原钴, 苯乙酸, 合成

Abstract: Sodium tetracarbonyl cobaltate was prepared by reaction of CO with CoCl2 inCH3OH, using Urushibara-Cobalt (U-Co) as activator and characterized by IR spectrometry-The optimum conditions were: Co(from U-Co)/CoCl2=0.6; 30 ℃; 0.1 MPa of CO.Theconvertion of CoCl2 in 3h of reaction was 96%.The convertion of benzyl chloride to pheny-lacetic acid using the Na[Co(CO)4] as catalyst was about 90% at 50℃ and 0.1 MPa of CO.

Key words: sodium tetracarbonyl cobaltate, urushibara-cobalt, phenylacetic acid, synthesis