Pt-CoOx nanoparticles supported on ETS-10 for preferential oxidation of CO reaction

• Published in: Applied catalysis. A, General Vol. 528; pp. 86 - 92
• Main Authors: López, Angela, Navascues, Nuria, Mallada, Reyes, Irusta, Silvia
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 25.11.2016; Elsevier Science SA
• Subjects: Bimetallic catalyst; Bimetals; Carbon dioxide; Catalysis; Catalysts; Cobalt; Cobalt oxides; ETS-10; Fuel cells; Nanoparticles; Oxidation; Platinum; PROX; PtCo nanoparticles; PtCo nanoparticles; Bimetallic catalyst; ETS-10; PROX
• ISSN: 0926-860X; 1873-3875
• DOI: 10.1016/j.apcata.2016.09.018

[Display omitted] •Pt-Co nanoparticles supported on ETS-10 are highly active in PROX reaction.•Catalysts are active in presence of CO2 and H2O.•Catalyst 1.4/ETS-10 achieves complete CO conversion of (120–150°C) at 30Lh−1g−1.•Catalyst was stable for 50h, with no changes in CO conversion or selectivity. In this paper we prepare bimetallic Pt-CoOx nanoparticles which are further supported in microporous titanosilicate ETS-10. This support has been previously demonstrated as a good candidate for this reaction in the presence of CO2 and H2O. The bimetallic nanoparticles and the supported catalysts containing different loadings of nanoparticles have been extensively characterized and tested in the PROX reaction. The characterization of the nanoparticles discarded the formation of a metallic alloy, although Co and Pt are intimately in contact in the nanoparticle as the HAADF-STEM images revealed. XPS confirmed that the calcined nanoparticles would consist of metallic platinum and cobalt and Pt oxides. The catalyst containing 1.4wt.% of PtCo nanoparticles can achieve complete CO conversion in the temperature range 120–150°C working at WHSV=30Lh−1g−1.