Decomposition of glucose with in situ deoxygenation in a low H2 pressure environment – Pt. II: Bimetallic catalysts.

• Bimetallic catalysts impacted glucose decomposition and performed in situ deoxygenation under low H 2 pressure. • 0.5%Co4%Fe/SiO 2 and 0.5%Ni4%Fe/SiO 2 catalysts are strong candidates for in situ selective deoxygenation. • Co stabilizes Fe in CoFe bimetal alloys. • Activity tests and EDS mappings demonstrate differences between co-impregnated and sequentially-impregnated catalysts. Bimetallic catalysts, CoFe, NiFe, PdFe, and PtCo were studied for their ability to perform in situ deoxygenation of glucose decomposition production at 350 °C. Catalysts were prepared via co-impregnation and sequential impregnation methods on SiO 2 in combinations of 4 wt% and 0.5 wt% for the two metals. Easily identifiable furanic compounds in the products were used to establish an understanding of deoxygenation activity. Co-impregnated 0.5%Co4%Fe/SiO 2 and sequentially impregnated (Fe first) 0.5%Ni4%Fe/SiO 2 catalysts provided the most favourable results. Thanks to the alloying of Co and Fe which stabilized Fe, the 0.5%Co4%Fe/SiO 2 catalyst eliminated furfural content and maintained a higher output of H 2. The 0.5%Ni4%Fe/SiO 2 catalyst required the Ni and Fe phases to remain uninterrupted to perform their synergistic roles which boosted DMF content and overall reduced solid residue. [ABSTRACT FROM AUTHOR]