Systematic Structure–Property Relationship Studies in Palladium-Catalyzed Methane Complete Combustion
| Autor: | Dimosthenis Sokaras, Hassan Aljama, Thomas F. Jaramillo, Matteo Cargnello, Frank Abild-Pedersen, Joshua J. Willis, Emmett D. Goodman, Alessandro Gallo, S. Nowak, Liheng Wu, Christopher J. Tassone |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Absorption spectroscopy Inorganic chemistry chemistry.chemical_element Precious metal 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Combustion 01 natural sciences Catalysis Methane 0104 chemical sciences chemistry.chemical_compound Nanocrystal chemistry Particle size 0210 nano-technology Palladium |
| Zdroj: | ACS Catalysis. 7:7810-7821 |
| ISSN: | 2155-5435 |
| Popis: | To limit further rising levels in methane emissions from stationary and mobile sources and to enable promising technologies based on methane, development of efficient combustion catalysts that completely oxidize CH4 to CO2 and H2O at low temperatures in the presence of high steam concentrations is required. Palladium is widely considered as one of the most promising materials for this reaction, and a better understanding of the factors affecting its activity and stability is crucial to design even more improved catalysts that efficiently utilize this precious metal. Here we report a study of the effect of three important variables (particle size, support, and reaction conditions including water) on the activity of supported Pd catalysts. We use uniform palladium nanocrystals as catalyst precursors to prepare a library of well-defined catalysts to systematically describe structure-property relationships with the help from theory and in-situ X-ray absorption spectroscopy. With this approach, we confirm that... |
| Databáze: | OpenAIRE |
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