Active Pt/CeO2 catalysts prepared by an alcohol‑reduction process for low‑temperature CO‑PROX reaction
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2019
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Materials for Renewable and Sustainable Energy
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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.
Como referenciar
QUEIROZ, CARLA M.S.; MACHADO, ARTHUR P.; PAIVA, ANA R.N.; ANTONIASSI, RODOLFO M.; VAZ, JORGE M.; SPINACE, ESTEVAM V. Active Pt/CeO2 catalysts prepared by an alcohol‑reduction process for low‑temperature CO‑PROX reaction. Materials for Renewable and Sustainable Energy, v. 8, n. 3, p. 1-8, 2019. DOI: 10.1007/s40243-019-0155-y. Disponível em: http://repositorio.ipen.br/handle/123456789/30372. Acesso em: 19 Apr 2024.
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