New ZnCe catalyst encapsulated in SBA-15 in the production of 1,3-butadiene from ethanol

ZnO-CeO;/SBA-15 catalysts were prepared by two kinds of solid-state grinding method and used for the production of 1,3-butadiene（1,3-BD） from ethanol.A mixture of SBA-15（with or without organic template） and metal precursors were ground in solid-state.The obtained catalysts were characterized by TG,N2 adsorption-desorption,TEM,XRD,Py-FTIR and NH;-TPD techniques.Superior dispersion of metal oxides and more exposed acid sites were achieved on the catalyst lOZn;Ce;-AS with the presence of organic template in SBA-15 during the solid-state grinding process.The catalytic performance was evaluated in a fixed-bed reactor and a 1,3-butadiene selectivity of as high as 45% is achieved.This is attributed to the coupling effect of Zn and Ce species in the mesopores of SBA-15,in which Zn promotes ethanol dehydrogenation and Ce enhances aldol-condensation,respectively.Additionally,solvent-free method inspires new catalyst synthesis strategy for the production of 1,3-butadiene from ethanol.