Selectivity and Stability Enhancement of Iron Oxide Catalyst by Ceria Incorporation for Selective Oxidation of H2S to Sulfur


Koyuncu D. D. , YAŞYERLİ S.

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, vol.48, no.11, pp.5223-5229, 2009 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 48 Issue: 11
  • Publication Date: 2009
  • Doi Number: 10.1021/ie8017059
  • Title of Journal : INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
  • Page Numbers: pp.5223-5229

Abstract

Cerium incorporated iron oxide catalysts and a pure iron oxide catalytic material were prepared by the complexation technique and their catalytic performances were investigated for selective oxidation of H2S to elemental sulfur in a fixed-bed flow reactor. Ce-Fe mixed oxide catalyst having a Fe/Ce ratio of 1/1 (2Fe-2Ce) showed complete conversion and very high sulfur selectivity in the temperature range of 200-300 degrees C. Sulfur selectivity and stability of iron oxide catalyst was significantly enhanced by the incorporation of cerium into the catalyst structure. It was Concluded that incorporation of ceria into the catalyst Structure significantly improved the redox ability of the catalyst.