Add time:08/16/2019         Source:sciencedirect.com

A series of Ce1-xCdxO mixed oxide catalysts prepared by co-precipitation method were tested for synthesis of glycerol carbonate (GC) from glycerol and Diethyl carbonate (cas 105-58-8) (DEC). The microstructural and physicochemical properties of the bimetal catalysts were characterized by XRD, SEM, TEM, XPS, CO2-TPD, N2-adsorption, TG-DSC and 1H NMR. The results show that the spherical particles of CdO were uniformly dispersed on the surface of lamellar CeO2. Besides, a noticeable increase was observed in the moderate basic sites concentration, because more oxygen atoms were adsorbed on the bimetal sample surface which was attributed to Ce4+ doped into CdO lattice. The Ce0.7Cd0.3O sample annealed at 500 °C was observed with the highest catalytic activity. 96.84% of glycerol conversion and 100% selectivity to GC were obtained over this catalyst under the optimized conditions (5 wt.% catalyst of glycerol, 90 °C, 180 min, glycerol/DEC molar ratio of 1:3). Besides, it was found that the conversion of glycerol carbonate was synergistically accelerated by the moderate and strong basic sites.

We also recommend Trading Suppliers and Manufacturers of Diethyl carbonate (cas 105-58-8). Pls Click Website Link as below: cas 105-58-8 suppliers