Effect of vanadium compounds on the sulfonation of carbon materials

Yu V. Larichev, A. P. Koskin

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

The synthesis of sulfonated carbon materials (SCMs) via the direct sulfonation of carbon nanofibers with sulfuric acid in the presence of vanadium compounds is studied. An efficient sulfiding system (98% H2SO4–NaVO3) providing a high sulfur content in a carbon material without oleum is proposed. It is established that the introduced sulfur exists in samples in the form of sulfo groups located predominantly on the surface. No intrusion of sulfuric acid residues between graphene layers with the formation of clathrates is revealed. It is shown that the surface of a carbon material is partially oxidized with the formation of carbonyl and carboxyl groups. The kinetic activity of the synthesized SCMs in the liquid-phase reaction of acetic acid esterification with ethanol is studied.

Original languageEnglish
Pages (from-to)663-667
Number of pages5
JournalKinetics and Catalysis
Volume58
Issue number5
DOIs
Publication statusPublished - 1 Sep 2017

Keywords

  • acidic catalysis
  • sulfonated carbon materials
  • sulfonation
  • vanadium

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