摘要
以三羟甲基丙烷和油酸为原料,对甲苯磺酸为催化剂,探讨了反应时间、反应温度、微波功率、酸醇摩尔比、催化剂用量等因素对三羟甲基丙烷油酸酯酯化率的影响。通过Design-Expert7.1软件中的响应面法对反应条件进行优化,确定最佳合成条件为:反应时间16.08 min,反应温度111.75℃,催化剂用量3.04%,酸醇摩尔比3∶1,微波功率637 W,在此条件下三羟甲基丙烷油酸酯的酯化率达到84.40%。在上述的最优条件下,分别合成三羟甲基丙烷月桂酸酯、三羟甲基丙烷豆蔻酸酯、三羟甲基丙烷癸酸酯、三羟甲基丙烷辛酸酯,其酯化率分别为80.97%、87.03%、80.73%和81.24%。
Trimethylolpropane oleic acid ester was synthesized under microwave irradiation using trimethylolpropane （TMP） and oleic acid （OA） as materials. Effects of reaction time, reaction temperature, microwave power, the amount of catalyst and molar ratio of OA to TMP on the esterification rate of trimethylolpropane oleic acid ester were investigated. The optimum conditions were obtained by response surface methodology （RSM） as follows ： reaction temperature 111.75 ℃, reaction time 16.08 rain, molar ratio of OA to TMP was 3：1 ,microwave power 637 W,the amount of catalyst 3.04%. Under the optimum conditions the esterification rate was 84. 40%. Under the above optimum conditions, other trimethylolpropane fatty acid esters, such as trimethylolpropane lauric acid ester, trimethylolpropane myristic acid ester, trimethylolpropane capric acid ester and trimethylolpropane octanoic acid ester were synthesized, and their esterification rates were 80. 97% ,87.03% ,80.73% and 81.24% ,respectively.
出处
《中国油脂》
CAS
CSCD
北大核心
2009年第11期51-56,共6页
China Oils and Fats
关键词
三羟甲基丙烷
脂肪酸
酯化
微波辐射
响应面法
trimethylolpropane
fatty acid
esterification
microwave irradiation
RSM
