In this paper a new solid superacid catalyst SO2-4-MoO3-TiO2 was prepared.The activity of the catalyst in esterification of acetic acid and iso-amyl alcohol was measured and compared with that of SO2-4-TiO2 and MoO3-TiO2.The results showed that SO2-4-MoO3-TiO2 had better catalytic performance than SO2-4-TiO2 and MoO3-TiO2.There was evident coordination between MoO3 and SO2-4 when they coexisted on TiO2.
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