食品与发酵工业2013，Vol.39Issue(7)：142-146,5.
SO42-/SnO2-高岭土催化合成食用香精丙酸正丁酯
Synthesis of butyl propionate by SO42-/SnO2-kaolin catalyst
摘要
Abstract
The solid super acidic SO42-/SnO2-kaolin was prepared by tin compounds and kaolin assisted by ultrasomc microwave dryingmethod,it has a higher surface area and is used in the synthesis of food essence butyl propionate.The influence factors on conversion rate of n-butyl propionate were discussed,such as acid and butyl alcohol molar ratio,catalyst dosage,reaction time,type and amount of entrainer.The optimal reaction conditions on synthesis of butyl propionate Were:the mole ratio of alcohol to acid is 2∶ 1,the dosage of catalyst 3％ of the total reaction materials,reaction temperature 114 ～ 116 ℃,entrainer n-butyl alcohol,and reaction time 4 h.In this condition the esterification rate was up to 97.02％,much higher than the majority catalysis mentioned in the literature,the esterification rate still reached to 86.58％ even when the catalyst was reused for third times,the purity of the product was 96.68％ by GCMS.关键词
高岭土/SO42-/SnO2/丙酸正丁酯Key words
kaolin/ SO42-/SnO2/ n-butyl propionate引用本文复制引用
陈志胜,郭海福,闫鹏,吴燕妮,刘丽平..SO42-/SnO2-高岭土催化合成食用香精丙酸正丁酯[J].食品与发酵工业,2013,39(7):142-146,5.基金项目
广东省自然科学基金(S2012040007383) （S2012040007383）
肇庆市科技计划项目(2012G030) （2012G030）
肇庆市科技创新计划项目(2011G28) （2011G28）
肇庆学院青年项目(201110) （201110）
