稀土固体超强酸SO_4^(2-)/TiO_2/La^(3+)催化合成异戊酸异戊酯  

Synthesis of Isamyl Isvalerate Catalyzed by SO_4^(2-)/TiO_2/La^(3+) Rare Earth Solid Superacid

作　　者：成战胜[1] 行春丽[1] 王拥军[1] 

机构地区：[1]焦作大学生化与环境工程系,焦作454003

出　　处：《食品与发酵工业》2005年第4期81-83,共3页Food and Fermentation Industries

基　　金：焦作市基金项目 (No .992 4 2 60 0 31 )

摘　　要：在固体超强酸SO2 -4/TiO2 /La3 +的催化下,异戊酸与异戊醇直接酯化,再经过滤、蒸馏制得合格的异戊酸异戊酯,其最佳工艺条件为:催化剂添加量0 9% ,异戊醇与异戊(酸)摩尔比=1 5∶1 0 ,反应温度130℃,反应时间3h ,异戊酸转化率为98% ,催化剂易分离。The solid superacid SO 2- _4/TiO_2/La 3+ was used as the catalyst in the isamyl isvalerate reaction The experimental results showed that the best esterification conditions are: the reaction temperature was 130 ℃, the reaction was time 3 h, isamyl to isvaleric acid was 1 5∶1 0 (mol), and w (catalyzer) = 0 9% of the total initial materials Conversion of isvaleric acid amounts to 98% The catalyst could be separated from reaction materials easily, and could be reused.

关 键 词：SO4^2-/TIO2/LA^3+ 异戊酸异戊酯 稀土固体超强酸 催化合成 最佳工艺条件 可重复使用 直接酯化 反应温度 反应时间 异戊醇 催化剂 添加量 摩尔比 转化率 分离 

分 类 号：TS202.3[轻工技术与工程—食品科学]