摘要
在微波辐射条件下,以环己醇和马来酸酐为原料、无水AlCl3为异构催化剂合成食品防腐剂——富马酸单环己酯。利用熔点测定、红外光谱分析和元素分析对产品进行结构表征;采用单因素试验分别研究反应物物质的量比、酯化反应温度与时间、异构化温度与时间、微波辐射功率和异构化催化剂用量对产物收率的影响。结果表明:微波辐射合成富马酸单环己酯的适宜条件为n(环己醇):n(马来酸酐):n(AlCl3)=1:1.2:0.0225,微波辐射功率700W,环己醇和马来酸酐的酯化反应温度55℃、反应时间30min、异构化温度100℃、反应时间25min,此条件下富马酸单环己酯的收率可达78.84%。
Mono-cyclohexyl fumarate（MCHF） was synthesized from cyclohexanol and maleic anhydride under microwave radiation using anhydrous aluminum chloride as the catalyst.The reaction products were structurally identified by means of melting point measurement,Infrared（IR） spectral analysis and elemental analysis.The effects of molar ratio of substrates,esterification temperature and time,isomerization temperature and time,microwave radiation power and isomerization catalyst dosage on MCHF yield were studied.The optimal reaction conditions were determined as follows： cyclohexanol/maleic anhydride/anhydrous aluminum chloride molar ratio 1：1.2：0.0225,microwave irradiaton power 700 W,esterification temperature 55 ℃,esterification time 30 min,isomerization temperature 100 ℃,and isomerization time 25 min.Under such conditions,the yield of MCHF reached 78.84%.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2011年第16期375-378,共4页
Food Science
基金
陕西省自然科学基金项目(2010JQ2013)
陕西省教育厅专项科研计划项目(09JK759)
关键词
微波辐射
食品防腐剂
富马酸单环己酯
环己醇
马来酸酐
无水氯化铝
microwave radiation
food preservative
mono-cyclohexyl fumarate
cyclohexanol
maleic anhydride
anhydrous aluminum chloride
