Active Pt/CeO2 catalysts prepared by an alcohol-reduction process for low-temperature CO-PROX reaction
| Autor: | Rodolfo M. Antoniassi, Estevam V. Spinacé, Ana Rita Noborikawa Paiva, Jorge Moreira Vaz, Arthur P. Machado, Carla Moreira Santos Queiroz |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Reducing agent lcsh:TJ807-830 lcsh:Renewable energy sources 02 engineering and technology 010402 general chemistry 01 natural sciences Catalysis chemistry.chemical_compound Materials Chemistry lcsh:TJ163.26-163.5 Carbon monoxide CO-PROX reaction Renewable Energy Sustainability and the Environment Alcohol-reduction process PROX Atmospheric temperature range 021001 nanoscience & nanotechnology 0104 chemical sciences Electronic Optical and Magnetic Materials Solvent Fuel Technology lcsh:Energy conservation chemistry Pt/CeO2 catalysts 0210 nano-technology Selectivity Ethylene glycol Hydrogen Nuclear chemistry |
| Zdroj: | Materials for Renewable and Sustainable Energy, Vol 8, Iss 3, Pp 1-8 (2019) |
| ISSN: | 2194-1467 2194-1459 |
| Popis: | Pt/CeO2 catalysts were prepared with 0.5 and 1 wt% of Pt loadings by an alcohol-reduction process using a solution of ethylene glycol and water as a reducing agent and solvent. The obtained catalysts were characterized by energy-dispersive X-ray spectroscopy, X-ray diffraction, and transmission electron microscopy. Transmission electron micrographs showed Pt nanoparticles with average sizes of 2.2 and 2.4 nm for Pt content of 0.5 and 1 wt%, respectively. The preferential oxidation of carbon monoxide in hydrogen-rich stream (CO-PROX reaction) was studied in the temperature range of 25–150 °C. Pt/CeO2 catalysts showed maximum CO conversions in the range of 80–98% and CO2 selectivity in the range of 50–70% at 50 °C. |
| Databáze: | OpenAIRE |
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