摘要
应用一水硫酸氢钠催化乙醇与肉桂酸的酯化反应 ,合成了肉桂酸乙酯。研究结果表明 ,硫酸氢钠具有较高的催化活性。考察了肉桂酸 /乙醇摩尔比、催化剂用量及反应时间对酯产率的影响。在典型反应条件 (肉桂酸 /乙醇 /硫酸氢钠的摩尔比 =1:19:0 .5 1,回流 3h)下 ,所得肉桂酸乙酯的产率为 97.1%。该催化剂易于回收且可重复使用。
Ethyl Cinnamate was synthesized by the esterification of ethyl alcohol with cinnamic acid in the presence of sodium bisulfate monohydrate.The results obtained showed that the sodium bisulfate monohydrate consisted of a fairly high catalytic activity of the esterification reaction.The effects of cinnamic acid and ethyl alcohol molar ratio,the amount of sodium bisulfate monohydrate catalyst applied,and the time of reacting on the yield of ethyl cinnamate have been surveyed.In the chemical reaction of the typical condition,the ester yield which was synthesized reache 97.1% (the molar ratio of cinnamic acid/ethyl alcohol / sodium bisulfate=1:19:0.51,refluxing 3h).Sodium bisulfate monohydrate catalyst can be easily recovered and reused.
基金
supportedbytheNaturalScienceFoundationofHu nanProvince [0 2JJY3 0 5 7]andScientificResearchFundofHunanProvincialEducationDepartment [0 1C0 2 2 ]
