磺化硅胶催化合成环己酮1，2-丙二醇缩酮

以磺化硅胶为催化剂，以环己酮和1，2-丙二醇为原料合成环己酮1，2-丙二醇缩酮，考察了催化剂的用量、原料配比和回流时间对反应的影响．结果表明，最佳工艺条件为，n（环己酮）=0．05mol，n（酮）：n（醇）=1：1．3，V（带水剂）=8．0mL，反应时间t=2h，m（催化剂）：0．3g（环已酮质量的6％），缩酮收率达93．0％．该催化剂制备简单，催化活性高，后处理简便，符合绿色环保催化剂的发展趋势．

Catalytic synthesis of sulfonated silica gel cyclohexanone 1, 2-propanediol ketal

Silicasulfuric acid （SSA） was used as the catalyst for synthesis of Cyclohexanone 1,2-propylene ketal from cyclohexanone and 1,2-propylene glycol. The effect of catalyst dosage, molar ratio and reflux time to reaction were investigated. The yield of Cyclohexanone 1,2-propylene ketal reaches 93.0% under the optimal reaction condition as follows： Cyelohexanone 0.05 tool, Cyclohexanone to 1,2-propylene glycol molar ratio is 1：1.3, catalyst dosage is 6%（0.3g） of the mass of Cyclohexanone, reaction time is 2 h. The catalyst preparation is simple and high catalytic activity, post-processing is simple, in line with the development trend of green catalysts.