催化学报

催化学报 ›› 2006, Vol. 27 ›› Issue (7): 591-595.

• 研究论文 • 上一篇    下一篇

Ni/CNTs催化剂的制备及其对甲醇气相羰基化反应的催化性能

张宁,周冬兰,朱瑜   

  1. 南昌大学化学系, 江西南昌 330047
  • 收稿日期:2006-07-25 出版日期:2006-07-25 发布日期:2006-07-25

Preparation of Ni/CNTs Catalyst and Its Catalytic Performance for Vapor-Phase Carbonylation of Methanol

ZHANG Ning*, ZHOU Donglan, ZHU Yu   

  1. Department of Chemistry, Nanchang University, Nanchang 330047, Jiangxi, China
  • Received:2006-07-25 Online:2006-07-25 Published:2006-07-25

PDF

990

被引次数

26

摘要： 将采用浸渍法制备的碳纳米管(CNTs)负载的镍催化剂用于甲醇直接气相羰基化反应,考察了催化剂的预处理条件对催化剂活性的影响,并采用透射电镜、 X射线衍射和红外光谱对其进行了表征. 结果表明,采用硝酸氧化和碳酸钠活化预处理CNTs制备的Ni/CNTs催化剂有很好的分散度,用三步干燥法将催化剂前体在氮气氛围下300 ℃热处理 2 h 后在氢气氛围下500 ℃还原 3 h 制得的催化剂活性较高.

关键词: 碳纳米管, 镍, 负载型催化剂, 甲醇, 气相羰基化

Abstract: The nickel catalyst supported on carbon nanotubes (CNTs), prepared by the incipient impregnation method, was employed for the vapor-phase carbonylation of methanol. The effects of the preparation and pretreatment conditions on catalytic activity of the Ni/CNTs catalyst were studied. The catalyst was characterized by means of transmission electron microscopy, X-ray diffraction, and infrared reflectance spectroscopy. The catalytic activity of Ni/CNTs was strongly influenced by the pretreatment conditions. The catalyst showed a high dispersion when the CNTs was pretreated with HNO3 and subsequently activated with Na2CO3. When the Ni/CNTs was calcined under N2 atmosphere at 300 ℃ for 2 h and then reduced under H2 atmosphere at 500 ℃ for 3 h, the prepared Ni/CNTs catalyst showed the highest catalytic activity for the vapor-phase carbonylation of methanol.

Key words: carbon nanotube, nickel, supported catalyst, methanol, vapor-phase carbonylation