Hydrodeoxygenation of p-cresol on unsupported Ni-W-Mo-S catalysts prepared by one step hydrothermal method

摘要

Unsupported Ni-Mo-W sulfide catalysts were prepared by one step hydrothermal method using ammonium heptamolybdate and thiocarbamide in water, and characterized by X-ray diffraction (XRD), nitrogen physisorption and transmission electron microscopy (TEM). The effect of W/Mo molar ratio on the catalytic performance was studied using the HDO of p-cresol as a probe. The results showed that the Ni-Mo-W-S catalyst with an appropriate W/Mo molar ratio possesses the short slab length of MoS2 or WS2 structure and many active sites, leading to the high HDO activity and HYD selectivity.