TiSiW_(12)O_(40)/TiO_2催化合成葡萄糖五丁酸酯的研究

Synthesis of Glucose Pentabutyrate Using TiSiW_(12)O_(40) /TiO_2 Catalyst

首次报道了新型催化剂 Ti Si W1 2 O40 / Ti O2 催化酯化合成葡萄糖五丁酸酯 ,考察了糖酸比、催化剂用量、反应时间、反应温度诸因素对产率的影响 .实验表明 ,Ti Si W1 2 O40 / Ti O2 是合成葡萄糖五丁酸酯的良好催化剂 .最佳反应条件为 :糖酸摩尔比 1∶ 6 ,催化剂的用量为反应物料总量的 2 .0 % ,酯化反应时间为 2 .0 h,反应温度 90～ 95℃ .反应产率可达 85 .4%

Synthesis of glucose pentabutyrate from glucose and butanoic acid catalyzed by solid super acid TiSiW 12 O 40 /TiO\-2, and the factors influencing the yield were investigated. It is shown that the solid superacid TiSiW 12 O 40 /TiO\-2 is an excellent catalyst, the yield of the glucose pentabutyrate can be more than 85.4% under the reaction conditions: molar ratio of glucose and butanoic acid 1∶6, reaction temperature 90~95 ℃, reaction time 2.0 h and amount of TiSiW 12 O 40 /TiO\-2 solid superacid catalyst 2.0%.