Study on catalytic synthesis of acetals and ketals by Ce(SO_4)_2

The acetalization and ketalization of different aldehydes and ketones with glycol catalyzed by Ce(SO4)2 are studied.The effects of reaction time,mole ratio of reactants and dosage of catalyst on the yield of acetals(ketals) are investigated.The results show that Ce(SO4)2 displays efficient catalytic performance for synthesis of acetals(ketals),the selectivity is more than 98% and the conversion is more than 92% when the mole ratio of aldehydes(ketones) to glycol is 1∶1.2,the dosage of catalyst is 1.0 g per mole aldehydes(ketones) and the reaction time is 2.0 h.