Highly Dispersed Pt Nanoparticles on TiO2 Support Using Fluidic Dynamic Process for Catalytic Oxidation of Ethylene Acetate and Carbon Monoxide

초록

Catalytic oxidation is considered an effective technology for removing harmful chemicals without the formation of secondary pollutants. Substrate-supported noble metal catalysts offer superior activity toward carbon monoxide and volatile organic compounds. In this study, a Pt catalyst deposited on a TiO2 was prepared using a fluid dynamics reactor with a reaction time of less than 5 h. The dynamic mixing process facilitates the uniform distribution of Pt particles on the TiO2 support, thereby enhancing the interaction between Pt and TiO2. The as-obtained nanocomposite exhibited a high specific surface area and pore structure, which were favorable for achieving abundant active sites for catalytic oxidation. X-ray photoelectron spectroscopy confirmed the improved electronic properties of Ti, O, and Pt. The catalyst exhibited excellent conversion efficiency (99%) for ethylene acetate and carbon monoxide at high gas hourly space velocities and low temperatures of 222 and 181 degrees C, respectively. This study provides important insights for overcoming the challenges associated with the uniform dispersion of noble metal nanoparticles in catalytic applications.

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