Studies Of Copper-based Catalyst Catalytic On Reaction Of Aldehyde-ketone Condensation And Glycerol Hydrolysis At Atmospheric Pressure

Glycerol and furfural are two important platform compounds in biomass chemical industry.Hydrogenolysis of glycerol to produce 1,2-propylene glycol and condensation reaction of furfural to 4-(2-furanyl)-3-butene-2-ketone are attractive routes to produce value-added chemical products.In this paper,Cu-based catalysts were used for these two reactions.The specific work is as follows:1.CuO/ZnO catalyst was prepared by co-precipitation method.By changing the molar ratio of elements,the CuZn50 catalyst shows the best catalytic activity which containing 48.6%mass fraction of CuO.By means of XRD,H2-TPR,NH3-TPD and other characterization methods,we found that the smaller catalyst particle size,higher surface dispersion of Cu element,and more acid sites were conducive to improving the catalyst activity.By changing the experimental conditions,it was found that the catalyst shows the best activity under conditions of 393 K,0.3 MPa nitrogen,1:2 of the molar ratio of furfural to acetone and 32 h reaction time.2.The CuO@NiO composite metal oxide catalyst was derived from calcinations of Cu-Ni-BTC material,and the catalyst activity o in hydrogenolysis of glycerol at atmospheric pressure was studied.By the characterization of TEM,BET,XPS and H2-TPR,it was found that CuO@NiO composite metal oxide catalyst had special core-shell structure,pore size distribution and element distribution,which resulted in higher stability and catalytic activity in the hydrogenolysis of glycerol compared with the catalyst prepared by co-precipitation method.By exploring the reaction conditions,it was found that the catalyst activity was the highest at 493 K,60 mL/min H2,and 1 mL/h glycerine feed ratio.