摘要
Tri-butyl citrate(TBC) is synthesized by using several kinds of ionic liquids as catalyst.The results show that the functionalized Brnsted acid ionic liquid([TEA-PS]) is the best catalytic among them;and use it as catalyst to optimize the reaction conditions:the proportion of reaction materiel is 1∶3.8(citric acid∶1-butanol);reaction temperature is 130℃;reaction time is 3.5h;cat./citric acid=15∶100(wt);the conversion of citric acid up to 99%.After simply separated from the products and treated with diethyl ether,the ionic liquid could be reused 8 times without noticeably decreasing in the catalytic activity.Therefore,an environmental friendly approach for synthesis of TBC could be provided with the ionic liquid as catalysts.
Tri-butyl citrate （TBC） is synthesized by using several kinds of ionic hquids as catalyst. The results show that the functionalized Brφnsted acid ionic hquid （ [ TEA-PSI [ HSO4 ] ） is the best catalytic among them ; and use it as catalyst to optimize the reaction conditions：the proportion of reaction materiel is 1：3.8 （citric acid： 1-butanol） ;reaction temperature is 130℃ ; reaction time is 3. 5h;cat./citric acid = 15： 100（wt） ;the conversion of citric acid up to 99%. After simply separated from the products and treated with diethyl ether,the ionic hquid could be reused 8 times without noticeably decreasing in the catalytic activity. Therefore, an environmental friendly approach for synthesis of TBC could be provided with the ionic liquid as catalysts.
出处
《化学研究与应用》
CAS
CSCD
北大核心
2008年第8期1090-1094,共5页
Chemical Research and Application
关键词
功能化离子液体
柠檬酸三丁酯
酯化
functionalized ionic liquid
tri-butyl citrate
esterification
