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以苯甲醛和1,2-丙二醇为原料,在固体超强酸SO24-/ZrO2催化下合成了苯甲醛缩1,2-丙二醇,考察了物料配比、反应时间、催化剂用量、带水剂用量等因素对反应的影响。结果表明,固体超强酸SO24-/ZrO2对合成苯甲醛缩1,2-丙二醇具有良好的催化活性,在苯甲醛用量为0.15mol、n(苯甲醛)∶n(1,2-丙二醇)为1∶1.3、反应时间为60min、催化剂SO24-/ZrO2用量为反应物总质量的0.9%、带水剂环己烷用量为20mL的最佳合成工艺条件下,苯甲醛缩1,2-丙二醇的收率达95.62%、纯度大于99.0%。
Benzaldehyde and 1,2-propanediol were used as raw materials to synthesize benzaldehyde 1,2-propanediol catalyzed by solid superacid SO24- / ZrO2. The effects of material ratio, reaction time, amount of catalyst, water-entraining agent and so on The impact of factors on the reaction. The results showed that the solid superacid SO24- / ZrO2 had good catalytic activity for the synthesis of benzaldehyde-1,2-propanediol with a benzaldehyde content of 0.15 mol and n (benzaldehyde): n (1,2-propanediol) of 1 : 1.3, the reaction time was 60min, the amount of catalyst SO24- / ZrO2 was 0.9% of the total mass of reactants and the amount of cyclohexane in water was 20mL. Rate of 95.62%, purity greater than 99.0%.