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以丙烯酸为原料,通过亲核加成反应合成了β-丙烯酰氧基丙酸,然后与乙二醇单甲醚反应,得到β-丙烯酰氧基丙酸甲氧基乙酯。讨论了不同影响因素如催化剂、阻聚剂对转化率的影响。分别用红外光谱、核磁共振氢谱、气相色谱-质谱联用等表征了产物。结果表明选择催化剂硫酸铈(用量为反应单体总质量的5%)、阻聚剂邻甲氧基酚和压缩空气的通入有利于提高酯化反应的速率和产物收率。
Acrylic acid was used as raw material to synthesize β-acryloyloxypropionic acid through nucleophilic addition reaction and then reacted with ethylene glycol monomethyl ether to obtain β-acryloyloxy propionic acid methoxyethyl ester. The influence of different influencing factors such as catalyst and inhibitor on the conversion rate was discussed. The products were characterized by IR, 1H NMR and GC-MS, respectively. The results show that the catalyst cerium sulfate (5% of the total mass of the reaction monomer) is selected. The introduction of polymerization inhibitor o-methoxyphenol and compressed air is beneficial to increase the esterification reaction rate and product yield.