强酸性阳离子交换树脂催化合成苯乙醛1，2-丙二醇缩醛

采用强酸性阳离子交换树脂作催化剂，以苯乙醛、1，2-丙二醇为原料合成了苯乙醛1，2-丙二醇缩醛。研究了带水剂种类和用量、催化剂用量、原料配比和反应时间等因素对产物收率的影响，得到了合成苯乙醛1，2-丙二醇缩醛最适宜的条件：苯乙醛与1，2-丙二醇摩尔比1：1．3、带水剂环己烷用量（苯乙醛为0．10mol的情况下）40mL、催化剂用量为总物料质量的2．7％、反应时间4h、反应温度105℃。在此条件下，苯乙醛1，2-丙二醇缩醛的收率为95．16％，产物纯度高达99．0％。该催化剂重复使用性能良好。

Synthesis of Phenylacetaldehyde 1,2-Propanediol Acetal Catalyzed by Strong Acidic Cation Exchange Resin

Phenylacetaldehyde 1,2 - propanediol acetal was synthesized from phenylacetaldehyde and 1,2 - propanediol using strong acidic cation exchange resin as catalyst. The factors influencing the yield of the product were discussed and the proper conditions were obtained as follows ： molar ratio of phenylacetaldehyde to 1, 2 - propanediol 1 ： 1.3, amount of water - carrying agent cyclohexane 40 mL （ based on phenylacetaldehyde 0.10 mol）, amount of catalyst 2.7% （based on the mass of total reactants）, reaction time 8 h, and reaction temperature 105 ℃. The yield and purity of the product was 95.16% and 99.0% separately under above conditions. The catalyst could be used repeatedly without any treatment.