ENHANCED PERFORMANCES OF SULPHATED ZIRCONIA NANOPARTICLES ON SBA-15 IN THE ETHERIFICATION OF 5-HMF WITH ETHANOL TO PRODUCE BIODIESEL COMPONENTS

摘要

Sulphation of zirconia deposited on SBA-15(mesoporous silica)enhances twenty times the productivity in the catalytic etherification of HFM with ethanol due to the creation of strong Lewis acid sites together with Br?nsted acidity,while selectivity to 5-(ethoxymethyl)furan-2-carbaldehyde(EMF,a performing biodiesel additive)and to ethyl 4-oxopentanoate(EOP,an intermediate to valeric esters)depends not only on the acidity,but also on the localization of zirconia nanoparticles inside the mesoporous silica.