Catalytic properties of activated carbons I. Gas-phase oxidation of hydrogen sulphide

S. V. Mikhalovsky, Yu P. Zaitsev

Research output: Contribution to journalArticlepeer-review

83 Citations (Scopus)

Abstract

Gas-phase oxidation of hydrogen sulphide catalysed by the activated carbons of different origin and formation of SOx in this process was studied. Using XPS, it was shown that H2S adsorption from an inert atmosphere on activated carbons resulted in the formation of surface oxygen-containing complexes and elemental sulphur. It is suggested that carbon surface functional groups contribute significantly to the formation of SOx in H2S oxidation. Impregnation of the carbons with transition metals alters their catalytic activity and selectivity towards sulphur oxides and elemental sulphur. Varying the method of impregnation it is possible to synthesise materials with very different catalytic properties. A vanadium-grafted catalyst with high selectivity towards elemental sulphur was synthesised. It effectively works at the temperature exceeding the melting point of sulphur enabling to obtain high yield of elemental sulphur.

Original languageEnglish
Pages (from-to)1367-1374
Number of pages8
JournalCarbon
Volume35
Issue number9
DOIs
Publication statusPublished - Jan 1 1997

Keywords

  • A. Activated carbon
  • B. oxidation
  • D. catalytic properties

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)

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