摘要
以固体超强酸SO2 -4/TiO2 MoO3 为多相催化剂 ,对以乙酰乙酸乙酯和 1,2 丙二醇为原料合成苹果酸酯 B的反应条件进行了研究。实验表明固体超强酸SO2 -4/TiO2 MoO3 是合成苹果酸酯 B的良好催化剂 ,最佳反应条件为∶n(乙酰乙酸乙酯 )∶n( 1,2 丙二醇 )为 1∶1.5 ,催化剂用量为反应物料总质量的1.5 % ,环己烷为带水剂 ,反应时间 1.0h ,反应温度 88～ 116℃ ,苹果酸酯 B收率达 74 .0 %。
The synthetic conditions of the malate B with the solid superacid SO 2- 4/TiO 2 MoO 3 as a polyphase catalyst and with ethyl acetoacetate and 1,2 propylene glycol as feed stocks were studied . The experimental results indicated that the solid superacid SO 2- 4/TiO 2 MoO 3 is a good catalyst for synthesizing malate B, the optimum reaction conditions:the molar ratio of ethyl acetoacetate to 1,2 propylene glycol is 1:1.5,the content of the catalyst is equal to 1.5%by the mass of total feed stocks, the cyclohexane is a water entraining agent ,the reaction time is 1.0?h,the reaction temperature is 88～116?℃.The malate B yield reaches 74.0%.
出处
《化学推进剂与高分子材料》
CAS
2003年第6期41-43,共3页
Chemical Propellants & Polymeric Materials
基金
湖北省教育厅重点科研基金 (No .2 0 0 2A0 0 0 0 8)资助项目
