Abstract: | The catalytic performance of Zr(SO4)2 and ZrO2 in the esterification of methacrylic acid withn - dodecanol was systematicaly studied. Zr(So4)2 perform well in catalytic activity. Alter reaction fOr 8 h, theconversion rate of n - dodecanol reahes or exceeds 90% and the selectivity for n - dedecanol methacrylate is upto 100 %. The catalytic activity of Zr(ss )2 is much higher than that of /ZrO2. Some acidic zeolites, such asHZSM - 5,HM and HY are almost inactive in this esterification reaction. The causes for low activity of ZrO2 and zeolites are discussed. Moreover, we studied the effects of calcination temperature, arnounts of Zr(SO4)2. 4H2O, recycling times of Zr(SO4)2. 4H2O and ratio of reactants. |