Nafion/SiO_2催化合成肉桂腈的研究

Synthesis of Cinnamonitrile Catalyzed by Nafion/SiO_2

应用新型固体酸催化剂 Nafion/ Si O2 作为催化剂制备肉桂腈 ,对催化剂用量、反应温度和反应时间等对脱水反应的影响进行了研究 ,实验结果表明 :Nafion/ Si O2 是肉桂醛肟脱水制备肉桂腈的良好催化剂 ,其反应时间短 ,后处理简单 ,催化剂用量少且可重复使用 ,收率高。脱水反应的最佳工艺条件为 :催化剂用量为肉桂醛肟质量的 10 % ,反应温度为 12 0℃ ,反应时间为 1h。

Cinnamonitrile was prepared used solid acid Nafion/SiO 2 as catalyst. The effect of catalyst amount, temperature and reaction time on the dehydration reaction has been investigated. The results showed that Nafion/SiO 2 has many advantages such as shorter reaction time, higher yield, smaller catalyst amount, being disposable and reusable. The optimum conditions for the reaction were: catalyst amount 10%, reaction temperature 120℃, reaction time 1h.