Effects of Pt0-PtOx particle size on 1-butene oxidative dehydrogenation to 1,3-butadiene using CO2 as soft oxidant

The increasing demand on 1,3-butadiene (BD) requires alternative production routes. Oxidative dehydrogenation (ODH) of 1-butene using CO2 as soft oxidant was systematically investigated over Pt-based catalysts. The effects of Pt chemical states, obtained on various supports and from different calcination environments, on the catalytic performance were studied. Different Pt0-PtOx particle sizes, having Pt0@PtOx core-shell structure observed from TEM images, were achieved by varying calcination environments. The BD selectivity was found to be structure sensitive and correlated with the Pt0-PtOx particle size.