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%。 Using acid resin as catalyst, the catalytic performance of 3-hydroxypropionic acid (3-HP) catalyzed by hydration of AA (acrylic acid) was studied. The effects of reaction temperature, reaction time and amount of catalyst on the yield of 3-HP were investigated. The results showed that the optimum conditions for the hydration reaction were single-factor test, which was 20 mL of 16% AA aqueous solution (relative to AA and water quality), 1.0 g of catalyst, 0.02 g of hydroquinone polymerization inhibitor, The reaction temperature is 120 ℃ and the reaction time is 3h. When the catalyst is reused less than 3 times, its stability is good, and the yield of 3-HP is more than 45%.