Kinetics Study of the Hydrodeoxygenation of Xylitol over a ReOx-Pd/CeO2 Catalyst

In this study, we elucidate the reaction kinetics for simultaneous hydrodeoxygenation of xylitol to 1,2-dideoxypentitol and 1,2,5-pentanetriol over a ReOx-Pd/CeO2 (2.0 weight% Re, 0.30 Pd) catalyst. The was determined be zero-order with respect xylitol. activation energy elucidated through an Arrhenius relationship as well non-Arrhenius kinetics. investigated at 150–170 °C constant H2 pressure 10 bar resulting in 48.7 ± 10.5 kJ/mol. investigation conducted 120–170 sub-Arrhenius relation being dependent on temperature, ranging from 10.2–51.8 kJ/mol temperature range investigated. Internal external mass transfer were evaluating Weisz–Prater criterion effect varying stirring rate rate, respectively. There no internal or limitations present reaction.