Synergistic effect between Pd and Re on Pd–Re/SBA-15 catalysts and their catalytic behavior in glycerol hydrogenolysis†
Abstract
Pd–Re/SBA-15 catalysts were prepared by the impregnation method. The influence of the interaction between Pd and Re in the Pd–Re catalysts on glycerol hydrogenolysis was investigated. Pd and Re had interaction which was confirmed by H2-TPR, XPS and EXAFS. In the Pd–Re catalysts, Re showed a higher oxidation state compared with that of the mono-component Re catalyst. The mechanically mixed Pd + Re catalysts showed a lower glycerol conversion than that of the bi-component Pd–Re catalysts, which suggested that the interaction of Pd and Re was very important in glycerol hydrogenolysis.