Topics in Catalysis

, Volume 53, Issue 15–18, pp 1126–1131

Hydrogenation of Aromatic Nitrogroups with Precious Metal Powder Catalysts: Influence of Modifier on Selectivity and Activity

  • Konrad Möbus
  • Dorit Wolf
  • Holger Benischke
  • Ulrike Dittmeier
  • Klaus Simon
  • Uwe Packruhn
  • Ralf Jantke
  • Stefan Weidlich
  • Christoph Weber
  • Baoshu Chen
Original Paper

DOI: 10.1007/s11244-010-9545-1

Cite this article as:
Möbus, K., Wolf, D., Benischke, H. et al. Top Catal (2010) 53: 1126. doi:10.1007/s11244-010-9545-1

Abstract

The development of new improved catalysts for the selective hydrogenation of aromatic nitrogroups is still a field of high interest for the chemical industry. Hydrogenation of aromatic nitrogroups to the corresponding aromatic amines is one of the most important applications for precious metal powder catalysts (PMPC). In this paper various commercial PMPC technologies such as palladium, platinum, platinum modified with copper and platinum modified with vanadium on activated carbon powder supports were compared to each other in regard to activity and selectivity for hydrogenation of 1-chloro-2-nitrobenzene. In this reaction, catalysts comprised of vanadium modified platinum on activated carbon showed excellent activities and selectivities towards 2-chloroaniline. Catalyst performance was affected by the ratio of platinum to vanadium and the properties of the carbon. The role of vanadium as an effective modifier to avoid accumulation of hazardous aromatic hydroxylamines was explained.

Keywords

Selective hydrogenation Nitrobenzene Aniline 1-Chloro-2-nitrobenzene 2-Chloroaniline Hyroxylamine Precious metal powder catalyst Platinum Vanadium Activated carbon 

Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  • Konrad Möbus
    • 1
  • Dorit Wolf
    • 1
  • Holger Benischke
    • 1
  • Ulrike Dittmeier
    • 1
  • Klaus Simon
    • 1
  • Uwe Packruhn
    • 1
  • Ralf Jantke
    • 1
  • Stefan Weidlich
    • 1
  • Christoph Weber
    • 1
  • Baoshu Chen
    • 1
  1. 1.Evonik Degussa GmbH, Business Line CatalystsHanauGermany

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