Sulfur deactivation and regeneration of mono- and bimetallic Pd-Pt methane oxidation catalysts

Sulfur deactivation and regeneration of mono- and bimetallic Pd-Pt methane oxidation catalysts

[Display omitted] •CO/SO2 DRIFTS linked sulfur-covered active sites to CH4 oxidation inhibition.•Sulfur inhibited CH4 oxidation over a broad range of catalysts containing Pd.•Sulfate migration reduced the temperature span of CH4 oxidation sulfur inhibition.•Sulfur regeneration recovered activity for...

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Veröffentlicht in:Applied catalysis. B, Environmental Environmental, 2017-06, Vol.206, p.589-598
Hauptverfasser: Wilburn, Monique Shauntá, Epling, William S.
Format: Artikel
Sprache:eng
Schlagworte:
Adsorption
Aluminium sulfate
Aluminum
Aluminum oxide
Aluminum sulfate
Bimetallic methane oxidation catalyst
Bimetals
Catalysts
Catalytic activity
Deactivation
Desorption
Low temperature
Methane
Oxidation
Palladium
Platinum
Regeneration
Sintering
Species
Studies
Sulfates
Sulfite
Sulfur
Sulfur dioxide
Sulfur poisoning
Sulfur regeneration
Surface chemistry
Temperature
Temperature effects
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Zusammenfassung:[Display omitted] •CO/SO2 DRIFTS linked sulfur-covered active sites to CH4 oxidation inhibition.•Sulfur inhibited CH4 oxidation over a broad range of catalysts containing Pd.•Sulfate migration reduced the temperature span of CH4 oxidation sulfur inhibition.•Sulfur regeneration recovered activity for SO2-treated catalysts with >90% Pd.•SO2-treated catalysts with
ISSN:0926-3373
1873-3883
DOI:10.1016/j.apcatb.2017.01.050