香料己酸丙酯的非均相催化合成研究  

Study on the heterogeneous catalytic synthesis of flavoring propyl caproate

作　　者：杨淑娟[1] 闫鹏[2] 吴燕妮[2] 郭海福[2] 陈志胜[2] 

机构地区：[1]呼和浩特职业学院生物化学工程学院,呼和浩特010051 [2]肇庆学院化学化工学院,肇庆526061

出　　处：《中国食品添加剂》2014年第7期70-74,共5页China Food Additives

基　　金：广东省自然科学基金项目(S2012040007383);广东省教育创新项目(2013KJCX0193);肇庆市科技计划项目(2012G030)

摘　　要：以固体酸Zr(SO4)2/硅藻土为催化剂,通过己酸和正丙醇的酯化反应合成香料己酸丙酯。考察了催化剂Zr(SO4)2/硅藻土的制备条件对其催化性能的影响,得出适宜的制备条件为:催化剂中硫酸锆与硅藻土的质量比例4∶6,焙烧温度350℃,焙烧时间2 h。采用正交实验优化了固体酸Zr(SO4)2/硅藻土催化合成己酸丙酯的工艺条件,得出较佳的催化反应条件为:酸醇比1∶1.75,催化剂用量0.5 g,带水剂用量3m L,反应时间1.5 h。在此条件下,己酸丙酯的酯化率可达99.2%。Propyl caproate was synthesized by the esterification of caproic acid and propanol, using solid acid Zr（SO4 ）2/Diatomite as the catalyst. The influence of catalyst preparation conditions on the performance of catalyst were studied, and the proper preparation conditions were obtained as following： mass ratio of Zr（ SO4 ）2 to Diatomite in the catalyst 4 ： 6, calcination temperature 350 ℃, calcination time 2 h. The process conditions of synthesis of propyl caproatc catalyzed by solid acid Zr（ SQ ） 2/diatomite were optimized through orthogonal experiment, and the best catalytic reaction conditions were as follows ： mole ratio of caproic acid to n - propyl alcohol 1 ： 1.75, the dosage of catalyst 0. 5 g, water carrying agent amount 3 mL, and reaction time 1.5 h. Under these conditions, the esterification rate of propyl caproate can reach to 99. 2%.

关 键 词：固体酸Zr (SO4)2/硅藻土 己酸丙酯 硫酸锆 硅藻土 催化 Zr(SO4) 2 

分 类 号：TS202.3[轻工技术与工程—食品科学]