INTEC 05402
INSTITUTO DE DESARROLLO TECNOLOGICO PARA LA INDUSTRIA QUIMICA
Unidad Ejecutora - UE
artículos
Título:
Synergetic Effect of Bimetallic Au-Ru/TiO2 Catalysts for Complete Oxidation of Methanol
Autor/es:
LINA CALZADA; VOLKAN ORTALANC; CHANG W. HAN; SEBASTIÁN COLLINS; RODOLFO ZANELLA
Revista:
APPLIED CATALYSIS B-ENVIRONMENTAL
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 2017 vol. 207 p. 79 - 92
ISSN:
0926-3373
Resumen:
Bimetallic Ru-Au/TiO2catalysts prepared by deposition-precipitation with urea method were tested forthe first time in the total oxidation of methanol. Different Ru:Au atomic ratios were used (1:1?0.25:1).The catalytic activity results showed a synergetic effect at low temperature (RT?50◦C), mainly for the1:1 and 0.75:1 atomic ratio. HAADF-STEM and STEM-EDS characterization confirmed the interactionbetween Ru and Au. TPR, UV?vis spectra, XPS and DRIFTS-CO results also confirm this interaction. FTIRspectra, recorded following the oxidation of methanol as a function of the reaction temperature, showedthat formates are the main reaction intermediates in the oxidation of methanol, which are formed fromRT on bimetallic Ru-Au catalysts and are oxidized at lower temperatures compared to their monometallicRu and Au counterparts.
