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Open AccessArticle

Propane and Naphthalene Oxidation over Gold-Promoted Cobalt Catalysts Supported on Zirconia

1
CINDECA (CCT La Plata- CONICET-UNLP), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Calle 47 N° 257, La Plata, Buenos Aires 1900, Argentina
2
INTEQUI (CCT San Luis- CONICET-UNSL), 25 de Mayo N° 384, Villa Mercedes, San Luis, 5730, Argentina
3
Departamento de Química Inorgánica, Cristalografía y Mineralogía, Facultad de Ciencias, Universidad de Málaga, Campus de Teatinos, Málaga, 29071, Spain
*
Author to whom correspondence should be addressed.
Catalysts 2020, 10(4), 387; https://doi.org/10.3390/catal10040387
Received: 5 March 2020 / Revised: 27 March 2020 / Accepted: 30 March 2020 / Published: 2 April 2020
Zirconia-supported gold-promoted cobalt catalysts were synthesized and tested for the complete oxidation of propane and naphthalene. The catalysts were characterized by BET surface area, scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), powder X-ray diffraction (XRD), transmission electron microscopy (TEM), temperature-programmed reduction (TPR), and X-ray photoelectron spectroscopy (XPS). In both propane and naphthalene combustion reactions, the results obtained indicate that catalysts formulated with Co3O4 are more active than those containing only Au. Catalysts prepared using the deposit/precipitation (DP) method have better activity than those in which the traditional technique is used. Gold addition using the DP methods generates a promoting effect on the activity of cobalt-containing catalysts. The AuDpCoZt catalyst was found to be the most active for both propane and naphthalene combustion. The catalytic behavior of this sample is associated with a synergic effect between gold, cobalt, and the support, which is also evidenced by an increase in the reducibility of this catalytic system. The effect of the presence of NO in the feed was also analyzed for propane combustion. View Full-Text
Keywords: gold; cobalt oxide; propane; naphthalene; catalytic oxidation gold; cobalt oxide; propane; naphthalene; catalytic oxidation
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Leguizamón Aparicio, M.S.; Ruiz, M.L.; Ocsachoque, M.A.; Ponzi, M.I.; Rodríguez-Castellón, E.; Lick, I.D. Propane and Naphthalene Oxidation over Gold-Promoted Cobalt Catalysts Supported on Zirconia. Catalysts 2020, 10, 387.

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