S_O_8^(2-)/ZrO_2SiO_2催化合成乳酸正丁酯  

Synthesis of n-butyl lactate over S_2O_8^(2-)/ZrO_2-SiO_2 solid acid

作　　者：金瑞娣[1] 沙兆林[1] 贾雪平[1] 

机构地区：[1]南通工学院化工系,江苏南通226007

出　　处：《工业催化》2004年第9期28-30,共3页Industrial Catalysis

摘　　要：对以S2O2-8/ZrO2 SiO2为催化剂催化合成乳酸正丁酯的方法进行了研究,得出其最佳工艺条件为:催化剂原料配比n(Zr)∶n(Si)=1∶15,醇酸物质的量的比为4 5∶1,催化剂用量1 0g,乳酸用量为0 083mol的情况下,反应时间为3 0h,酯化率可达97 3%。催化剂可重复使用6次以上。Synthesis of n-butyl lactate over S_2O^(2-)_8/ZrO_2-SiO_2 solid acid catalyst was studied.The results showed that the optimum condition was as follows :n(Zr)∶n(Si) = 1∶15;n(n-butanol)∶n(lactic acid)=4.5∶1; (catalyst)=1.0 g when n (lactic acid)=0.083 mol;reaction time 3 h.Esterification rate of 97.7% was obtained.The catalyst can be used repeatedly for over six times.

关 键 词：S2O8^2-/ZrO2-SiO2固体酸 乳酸正丁酯 

分 类 号：TQ225.241[化学工程—有机化工] TQ426.94