title: Catalytic combustion of methane over commercial catalysts in presence of ammonia and hydrogen sulphide.
abstract: The performance of different commercially available catalysts (supported Pd, Pt, Rh, bimetallic Pd-Pt, and Cr-Cu-Ti oxide catalyst) for the oxidation of methane, alone and in presence of ammonia and hydrogen sulphide is studied in this work. Catalysts performance was evaluated both in terms of activity and resistance to poisoning. The main conclusions are that supported Pd and Rh, present the highest activities for methane oxidation, both alone and in presence of ammonia, whereas they are severely poisoned in presence of H2S. Pt and Cr-Cu-Ti are less active but more sulphur resistant, but their activity is lower than the residual activity of sulphur-deactivated Pd and Rh catalysts. The Pd-Pt catalyst exhibits low activity and it is quickly deactivated in presence of hydrogen sulphide.
authors.affiliation: Department of Chemical and Environmental Engineering, University of Oviedo, c/Julián Clavería s/n, Oviedo 33006, Spain.
authors.forename: Paloma
authors.initials: P
authors.lastname: Hurtado
authors.forename: Salvador
authors.initials: S
authors.lastname: Ordóñez
authors.forename: Aurelio
authors.initials: A
authors.lastname: Vega
authors.forename: Fernando V
authors.initials: FV
authors.lastname: Díez
mesh_terms: D000641:Ammonia / Q000737:chemistry*; D002384:Catalysis; D006862:Hydrogen Sulfide / Q000737:chemistry*; D007700:Kinetics; D019216:Metals, Heavy / Q000737:chemistry*; D008697:Methane / Q000737:chemistry*; D010084:Oxidation-Reduction; D013696:Temperature
chemical_list: D019216:Metals, Heavy; D000641:Ammonia; D008697:Methane; D006862:Hydrogen Sulfide