Encapsulated Cobalt Oxide on Carbon Nanotube Support as Catalyst for Selective Continuous Hydrogenation of the Showcase Substrate 1-Iodo-4-nitrobenzene

Todor Baramov, Patrick Loos, Jorma Hassfeld, Hannes Alex, Matthias Beller, Tobias Stemmler, Gregor Meier, Michael Gottfried, Stefan Roggan

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

A carbon nanotube supported catalyst containing cobalt/cobalt oxide (Co/Co3O4) nanoparticles encapsulated within a shell of nitrogen-doped graphene layers (Co3O4/NGr@CNT) was prepared. It shows excellent chemoselectivity in the hydrogenation of 1-iodo-4-nitrobenzene, which contains an iodine substituent highly sensitive against hydrodehalogenation. In contrast to traditional activated charcoal-supported catalysts such as Pt-V/C or the closely related Vulcan carbon black supported Co3O4/NGr@C, the advantageous morphological properties of the CNT support allow for the application of the new Co3O4/NGr@CNT as a fixed bed catalyst in a continuous flow reactor. Under optimized conditions, no dehalogenation side products could be detected. This remarkable selectivity in combination with its mechanical stability under operation conditions render Co3O4/NGr@CNT a catalyst particularly relevant for application in continuous processes based on a packed bed reactor. (Figure presented.).

Original languageEnglish
Pages (from-to)2903-2911
Number of pages9
JournalAdvanced Synthesis and Catalysis
Volume358
Issue number18
DOIs
StatePublished - 15 Sep 2016
Externally publishedYes

Keywords

  • flow chemistry
  • heterogeneous catalysis
  • hydrogenation
  • nitroarenes
  • supported catalysts

Fingerprint

Dive into the research topics of 'Encapsulated Cobalt Oxide on Carbon Nanotube Support as Catalyst for Selective Continuous Hydrogenation of the Showcase Substrate 1-Iodo-4-nitrobenzene'. Together they form a unique fingerprint.

Cite this