Characterization and hydrodeoxygenation properties of Co promoted Ni–Mo–B amorphous catalysts: influence of Co content

摘要: Different contents of promoter (Co) in Co–Ni–Mo–B amorphous catalysts were prepared by chemical reduction the precursors metal salts with a sodium borohydride aqueous solution. The characterized scanning electron microscopy (SEM), X-ray diffraction (XRD) and photoelectron spectroscopy (XPS). Adding proper content Co into Ni–Mo–B catalyst could increase MoO2 decrease particle size, but doping excess would cover some active sites size catalysts. effect on catalytic hydrodeoxygenation activity was studied using phenol as model compound. main route for HDO these hydrogenation–dehydration aromatic compounds products decreased obviously. pseudo first-order reaction rate constant much greater than that MoS2 when adding Co.