The Study of SO_4~(2+)/ Fe_2O_3-Dy_2O_3 Solid Superacid for Catalyzing Es-ter ification

摘要

The effect of the preparation of SO_4~(2-)/ Fe_2O_3-Dy_2O_3 solid superacid on its activity for esterification is reported in this paper. It is found that the addition of Dy_2O_3 decreases the strong acidic centres and carbon deposition, and increases the middle acidic centres. The insetting structure formed in the catalyst may prevent the SO_4~(2-) from desorbing, which improves the stability of the catalyst.