摘要
以硫酸氢钠为催化剂合成水杨酸乙酯.考察醇酸物质的量比、催化剂用量、反应时间以及反应温度对酯化率的影响.结果表明,硫酸氢钠的催化活性较高,在最佳条件下合成水杨酸乙酯,酯化率可达80.1%~88.2%.实验结果得到的最佳实验条件为:催化用量2 g,n(乙醇):n(水杨酸)=10:1,反应时间6 h,反应温度75~80℃.
Ethyl salicylate was prepared using sodium hydrogen sulfate as the catalyst. Influences of n (alcohol) : n ( salicylic acid), catalyst dosage, reaction time and reaction temperature were investigated. The results showed that the sodium hydrogen sulfate exhibited higher catalytic activity. Esterification efficiency of 80.1%--88.2 % was obtained under optimum condition as follows: catalyst dosage 2 g, n (alcohol) : n (salicylic acid) = 10:1, reaction time 6 h, reaction temperature 75 - 85 ℃.
出处
《工业催化》
CAS
2006年第5期42-44,共3页
Industrial Catalysis
关键词
硫酸氢钠
水杨酸
酯化
水杨酸乙酯
sodium hydrogen sulfate catalyst
salicylic acid
esterification
ethyl salicylate