Abstract
Supported Pd–Re bi-component catalysts were prepared by an impregnation method and employed in a glycerol hydrogenolysis reaction. The addition of Re into a Pd catalyst increased the conversion of glycerol and the selectivities to propanediols. The catalysts were characterized by N2 adsorption–desorption, XRD, CO chemisorption, TPR and NH3-TPD techniques. The results showed that the addition of Re changed the reduction behaviors of the Pd and Re components, indicating that Pd and Re might have an interaction. Re could increase the ability of the catalysts for the activation of a C–O bond and further promote the activity of Pd in glycerol hydrogenolysis. At the same time, the addition of Re also increased the acidity of the Pd–Re catalysts. Pd–Re supported on acidic oxides showed a tendency of decreasing selectivities to 1,2-propanediol, while Pd–Re catalysts with basic oxides as supports could increase the conversion of glycerol, but maintain the selectivities to 1,2-propanediol.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.