Experimental investigation on H2S and SO2 sulphur poisoning and regeneration of a commercially available Ni-catalyst during methane tri-reforming

Philipp Wachter*, Christian Gaber, Juraj Raic, Martin Demuth, Christoph Hochenauer

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


H2S and SO2 poisoning during methane tri-reforming are the main degradation sources for nickel catalysts, especially when exhaust gases are used as reactants. To prolong the lifetime of such applications, it is of primary importance to find strategies which reduce the poisoning effects of sulphur or allow regeneration of poisoned catalysts. The specific feature of tri-reforming, oxygen addition to the reactants, offers possibilities for both of these objectives. This experimental study, based on a specific thermochemical recuperation process, thus scrutinizes three aspects of sulphur poisoning and regeneration during methane tri-reforming focusing on oxygen as key influencing factor: (I) Oxygen addition to the reactants is investigated. (II) A comparison between H2S and SO2 poisoning is made. (III) Catalyst regeneration by oxygen treatment is performed. The conclusions derived from the results allow significant improvements in terms of catalyst stability and regeneration and thus contribute to expand application possibilities of reforming catalysts.

Original languageEnglish
Pages (from-to)3437-3452
Number of pages16
JournalInternational Journal of Hydrogen Energy
Issue number5
Publication statusPublished - 19 Jan 2021


  • Catalyst regeneration
  • Ni-catalyst
  • Oxygen treatment
  • Sulphur poisoning
  • Tri-reforming

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

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