Novel glycerol dry reforming catalysts with monometallic and bimetallic active sites
Novel glycerol dry reforming catalysts with monometallic (Ru) and bimetallic (Ru and Ni or Ru and Co) active sites which are supported on a custom-design ternary mixed oxide support material (i.e., Al2O3-TiO2-ZrO2, AZT) with varying compositions were examined. Characterization of the synthesized catalytic system was carried out with XRD, Raman, BET, XPS, ICP-MS, SEM, and EDX techniques. Structure of the Ru active sites as a function of Ru loading was also investigated with in-situ FTIR spectroscopy via CO adsorption. Catalytic reactivity results revealed that 1 wt.% Ru/AZT70 catalyst can outperform the 1 wt.% Ru/La2O3-ZrO2 catalyst in GDR reaction, where the latter catalyst is known to be the best catalyst in the literature for GDR reaction. 0.5wt.% Ru/AZT70 catalyst showed close activity compared to 1wt.% Ru/AZT70 catalyst. Furthermore, catalytic promotional effect of Ni for low Ru loadings in GDR reaction was also demonstrated.