摘要
以磺化硅胶为催化剂,以柠檬酸和正丁醇为原料合成柠檬酸三丁酯。考察了磺化硅胶催化剂用量、原料配比和回流时间对反应的影响。最佳工艺条件:催化剂用量为柠檬酸质量的1.30%,n(柠檬酸):n(正丁醇)=1:3.2,回流时间3 h,反应温度(135～140)℃,柠檬酸三丁酯的酯化率为98.7%。该催化剂制备简单,催化活性好,后处理简便。
Silicasulfuric acid（SSA） was used as the catalyst for synthesis of tributyl citrate from citric acid and tributylalcohol. Effects of catalyst dosage, molar ratio of the reactants and reaction time were investigated. Tributyl citrate yield of 98.7% was attained under the optimal reaction condition as follows： citric acid 0.04 mol, n-butylalcohol/citric acid molar ratio 3.2： 1, catalyst dosage = 1.3% of the mass of citric acid, reaction time 3 h, reaction temperature （ 135 - 140） ℃.
出处
《工业催化》
CAS
2009年第3期60-63,共4页
Industrial Catalysis
基金
国家973前期预研项目(2006CB708606)
宁夏自然科学基金项目(2004-CD01)
关键词
有机合成化学
柠檬酸
正丁醇
磺化硅胶催化剂
柠檬酸三丁酯
organic synthesis chemistry
citric acid
n-butylalcohol
silicasulfuric acid catalyst
tributyl citrate
