Preparation Of Nickel Phosphide Catalyst And Its Application In Selective Hydrogenation Of Furfural

Biomass is an important part of the renewable resources,of which the efficient conversion and utilization has been the hot research interest of the world.Furfural?FAL?is one of the most suitable platform molecules in biomass conversion.The selective hydrodeoxygenation?HDO?of FAL to 2-methylfuran?2-MF?attracts a lot of interest,since it could be considered to be a fuel with excellent application.Metal phosphide is a bifunctional catalyst,they have showed unique physicochemical properties and catalytic performances in many HDO reactions.Transition metal phosphide catalysts were successfully prepared via the conventional TPR method.Ni2P₀.5 catalyst showed the best catalytic performance with 100%conversion of FAL and 85.5%selectivity to 2-MF at 240 ? and 1.5 MPa.Besides,the catalyst could be reused for 5 times without any losses in selectivity of 2-MF.A series of citric acid?CA?modified nickel phosphide catalysts were prepared and characterized.The result showed that nickel phosphide has a maximum BET surface area of 105 m2 g-1 with CA/Ni molar ratio of 2.0.2.0CA-Ni2P₀.75 catalyst showed the best catalytic performance with 100%conversion of FAL and 93.7%selectivity to 2-MF at 180 ? and 1.0 MPa.Furthermore,the catalyst could be reused for 7 times without any losses in selectivity of 2-MF.Synthesis and characterization of a series of supported nickel phosphide catalysts were carried out.1.5CA-12.5Ni2P?1?/S 15 catalyst showed the best catalytic performance with 100%conversion of FAL and 94.6%selectivity to 2-MF at 200 ?and 0.8 MPa.What's more,the higher stability of supported nickel phosphide catalyst was shown and it could be reused for 10 times without any losses in selectivity of 2-MF.