应用化学 ›› 1997, Vol. 0 ›› Issue (2): 57-59.

• 研究论文 • 上一篇    下一篇

硝基苯气相加氢催化剂Cu/SiO2的改性研究

方向明1, 李凤仪1, 夏克坚2, 秦中2   

  1. 1. 南昌大学现代应用化学研究所, 南昌 330047;
    2. 江西OAI-中德联合研究院, 南昌
  • 收稿日期:1996-08-02 修回日期:1996-11-18 出版日期:1997-04-10 发布日期:1997-04-10

Effect of Cr and Mo on Vapor-Phase Hydrogenation Catalysts Cu/SiO2 for Nitrobenzene

Fang Xiangming1, Li Fengyi1, Xia Kejiang2, Qing Zhong2   

  1. 1. Institute of Modern Applied Chemistry, Nanchang University, Nanchang 330047;
    2. Jiangxi OAI Gemeinsames Institut, Nanchang
  • Received:1996-08-02 Revised:1996-11-18 Published:1997-04-10 Online:1997-04-10

摘要: 苯胺是染料、医药、农药及橡胶助剂等有机化学工业的重要原料和中间体. 工业生产上有几种合成苯胺的工艺路线. 目前最广泛使用的是以单铜或改性单铜为催化剂的硝基苯气相加氢工艺.

关键词: 硝基苯, 苯胺, 加氢催化剂

Abstract: Cu/SiO2 catalysts modified by Cr2O3 and MoO3 have been characterized with a continuous fixed bed reactor. The influence of Cr2O3 and MoO3 on the surface properties and active site of catalysts has also been studied with TPR, XPS and XRD. The results show that catalytic properties of catalysts modified by Cr and Mo are improved remarkably and Cr2O3 and MoO3 in the catalysts have the property of donating electrons towards Cu particles. Adding proper amounts of Cr, Mo to catalysts can increase the dispersity of Cu particles and the stability of catalysts.

Key words: nitrobenzene, phenylamine, hydrogenation catalyst