Abstract:
Hydrogenolysis reaction is employed to convert glycerol to valuable chemicals, especially 1,3-Propanediol. In this study, the performance, including activity, selectivity, and stability, are investigated for the third metal promoted Pt/WOx/Al2O3 catalyst. The catalysts were prepared using the wet and wetness impregnation method for Pt/WOx/Al2O3 and M/Pt/WOx/Al2O3, respectively. The morphological properties of catalysts were examined characterized by SEM-EDX, BET, CO-chemisorption techniques. The catalytic stability was tested as a second-round hydrogenolysis reaction that the deactivation is determined by BET, CO-chemisorption, XRD, ICP, and TGA analysis. The results indicated that the addition of the third metal on Pt/WOx/Al2O3 catalyst improves activity while the Re, Rh, and HSiW doped show better stability in term glycerol conversion. Nevertheless, the Re, Rh, and HSiW can improve the catalyst deactivation through Pt sintering, Pt leaching, and coking. The improvement is explained by stronger interaction between Pt and Al2O3 after the Re, Rh, and HSiW were added. Additionally, the third metal can against the coke formation on Pt metal as a favoured site by the moveability coke to Al2O3 support.
