Low-temperature oxidation of methane on Pd-Sn/ZrO2 catalysts
| Autor: | João Batista Oliveira dos Santos, Gustavo Paim Valença, Adriana S.P. Lovón, Nathália La-Salvia, Juan J. Lovón-Quintana |
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| Rok vydání: | 2016 |
| Předmět: |
Chemistry
Process Chemistry and Technology Inorganic chemistry Oxide chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Oxygen Redox Catalysis Methane 0104 chemical sciences law.invention chemistry.chemical_compound law Particle Calcination Particle size Physical and Theoretical Chemistry 0210 nano-technology |
| Zdroj: | Journal of Molecular Catalysis A: Chemical. 411:117-127 |
| ISSN: | 1381-1169 |
| DOI: | 10.1016/j.molcata.2015.08.001 |
| Popis: | Pd/ZrO 2 , Pd-Sn/ZrO 2 and Sn/ZrO 2 were prepared by incipient wetness using Pd(NO 3 ) 2 ·XH 2 O and SnC 4 H 4 O 6 ·XH 2 O as precursors, dried and calcined in static air at 500 °C, 800 °C or 1100 °C. The influence of Sn species in the oxygen storage capacity of the catalysts, distribution of Pd particle sizes and CH 4 oxidation reaction were investigated. Pd particle size was larger on Sn-containing catalysts and showed lower mobility than those in the absence of Sn. Sn oxide species act as an oxygen reservoir that are easily transferred to Pd surfaces promoting the oxidation reaction of methane. For Pd-Sn-containing solids calcined at 1100 °C, the contribution of Sn in the CH 4 oxidation reaction is negligible. |
| Databáze: | OpenAIRE |
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