Abstract
The KCaF3/C (K-Ca(A)) catalyst was shown to be effective as heterogeneous basic catalysts for the transesterification of ethylene carbonate (EC) and ethanol among fluoro-perovskite (XYF3)/C (X=K, Cs, Y=Mg, Ca) catalysts. Although the KMgF3/C (K-Mg (A)) catalyst exhibited the highest catalytic activity among the XYF3/C catalysts studied, the potassium leaching was observed on K-Mg (A). CO2 temperature programmed desorption (TPD) revealed that the superior catalytic activity of the XYF3/C was due to its strong basic sites. CO2-TPD and XPS measurements indicated that strong basic sites are generated by an increase in the electron density of fluorine.
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