Research Article Open Access

EFFECTS OF THE SYNTHESIS METHODS ON THE CATALYTIC ACTIVITY OF PLATINUM AND OSMIUM SUPPORTED ON TITANIA FOR CARBON MONOXIDE OXIDATION

Abstract

 Platinum and Osmium supported on Titania (Pt/TiO2 , Os/TiO2 ) catalysts materials were synthesized by solid by solid (SSI), sol-gel (SGI), and incipient wetness impregnation (IWI) techniques. The catalysts were characterized by X-ray diffraction (XRD), SEM, Raman spectroscopy, surface area analysis (BET), and Fourier transforms infrared spectroscopy. Ex-situ structural studies by X-ray diffraction and Raman scattering showed that the anatase phase is maintained throughout the 10% of Pt or Os on Titania phase. The experimental demonstrated that supported platinum and osmium are active catalysts at moderate temperature for the complete oxidation of CO to CO2 ; The SSI method gave the most active catalysts for both Pt and Os. Pt catalysts prepared by SSI were active at temperature below 100°C and showed a much greater activity than Osmium catalysts.

 CARLOS H. DELIZ, SANTANDER NIETO

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