• Medientyp: E-Artikel
  • Titel: Sulfur as a Selectivity Modifier in a Highly Active Rh/Fe2O3/ZrO2 Catalyst for Water–Gas Shift
  • Beteiligte: Hakeem, Abrar A.; Rajendran, Jaikishen; Kapteijn, Freek; Makkee, Michiel
  • Erschienen: Wiley, 2014
  • Erschienen in: ChemCatChem
  • Sprache: Englisch
  • DOI: 10.1002/cctc.201402161
  • ISSN: 1867-3880; 1867-3899
  • Schlagwörter: Inorganic Chemistry ; Organic Chemistry ; Physical and Theoretical Chemistry ; Catalysis
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  • Beschreibung: <jats:title>Abstract</jats:title><jats:p>The presence of small amounts of sulfur (&lt;500 ppm) on a Rh/Fe<jats:sub>2</jats:sub>O<jats:sub>3</jats:sub>/ZrO<jats:sub>2</jats:sub> catalyst improves its water–gas shift (WGS) selectivity and stability under typical industrial conditions. Rh/Fe<jats:sub>2</jats:sub>O<jats:sub>3</jats:sub>/ZrO<jats:sub>2</jats:sub> is a highly active WGS catalyst, but it produces small amounts of methane as a side product. The formation of methane is due to the presence of rhodium in the catalyst. Sulfur selectively poisons the site(s) responsible for methane formation. The improved selectivity and prolonged stability of the catalyst is maintained as long as sulfur is present.</jats:p>