杂多酸催化合成丙烯酸-2-乙基己酯

Heteropolyacids Catalysis in Synthesizing 2 Ethylhexyl acrylate

杂多酸（盐）作为性能优良的酸性、氧化性或二者兼具的双功能催化剂应用在许多有机合成反应中［１］，其中有些反应已成功实现了工业化［２］，因此近年来有关杂多酸（盐）催化反应的应用研究倍受关注．丙烯酸２乙基己酯（简称ＨＡ）是重要的高分子单体，与其它单体进...

The present paper covers the synthesis of 2 Ethylhexyl acrylate catalyzed by a heteropoly acid. The orthogonal experiments and repeated experiments showed that 12 tungstophosphoric acid exhibited the best catalytic activity. The conversion rate and selectivity are close to 100%. The optimum conditions of the reaction with 12 tungstophosphoric acid as the catalyst are as follows:The ratio of alcohol to acid is 1.05∶1, the quantity of the catalyst used is 1%( W t%), reaction time is 2 h, the reaction temperature is 117 ℃～140 ℃ (Toluene is water carrying agent), and the quantity of the inhibitor is 0.15%( W t%).The activity of the catalyst having been used for 5 times is unchanged.