SULFATED BINARY AND TRINARY OXIDE SOLID SUPERACIDS

A series of sulfated binary and trinary oxide solid superacids were pr epared, and their catalytic activities for n-butane isomerization at l ow temperature were measured. The incorporation of different metal oxi des into ZrO2 may produce a positive or negative effect on the acid st rength and catalytic activity of the solid superacids. Sulfated oxides of Cr-Zr, Fe-Cr-Zr and Fe-V-Zr are 2-3 times more active than the rep orted sulfated Fe-Mn-Zr oxide. The enhancement in the superacidity and catalytic activity of these new solid superacids has been discussed o n account of the results of various characterization techniques.