Oxidation of 5-Hydroxumethylfurfural over Supported Pd-Containing Catalysts

Abstract

The results for the oxidation of 5-hydroxymethylfurforol (5-HMF) over Pd/TiO2 and Pd/ZrO2 catalysts obtained by impregnation using different heat treatment conditions are presented. The catalysts were studied by XRD, XPS, low-temperature nitrogen adsorption and pulse CO adsorption methods. Catalytic studies were carried out under mild conditions of 5-HMF oxidation: a temperature of 80°C, an oxygen pressure of 5 atm, and the use of NaHCO3 as a base agent. It is shown that the conditions of temperature treatment significantly affect the formation of the active component over Pd/TiO2 and Pd/ZrO2 catalysts, determining dispersion of active component and interaction with the support and, as a consequence, the catalytic properties of the obtained materials.