酸性树脂催化丙烯酸水合反应制备3-羟基丙酸

The 3-hydroxypropionic acid prepared by acidic resin catalyzed acrylic acid hydration

以酸性树脂为催化剂,研究了催化AA(丙烯酸)水合制备3-羟基丙酸(3-HP)的规律,并考察了反应温度、反应时间和催化剂掺量对3-HP收率的影响。研究结果表明:采用单因素试验法优选出水合反应的最佳工艺条件是16%AA水溶液(相对于AA和水质量而言)20 mL、催化剂1.0 g、对苯二酚阻聚剂0.02 g、反应温度120℃和反应时间3h;当催化剂重复使用≤3次时,其稳定性良好,并且3-HP的收率≥45%。

With acidic resin as catalyst, the rule of 3-hydroxypropionic acid （3-HP） prepared by catalyzing AA （acrylic acid） hydration was studied, and the influences of reaction temperature, reaction time and catalyst contents on the yield of 3-HP were investigated. The research results showed that the optimal process conditions of hydration were preferred by single-factor experiment when 16% AA solution was 20 mL in AA and water mass, catalyst and hydroquinone inhibitor were 1.0 g and 0.02 g respectively, reaction temperature and time was 120℃ and 3 h respeeliwdy. The calalyst had the good stability, and the 3-HP＇s yield was no less than 45% when reusing times of eatalysl was no more than 3 times.