摘要
桐油是我国重要的林产生物质资源,开发桐油下游产品,提高桐油经济附加值具有重要的意义。由桐油经酯交换合成了桐酸甲酯,采用树脂催化法在溶液中合成了桐酸甲酯-马来酸酐加合物(MEMAA),考察了不同催化树脂种类、树脂用量、反应时间、物料配比等因素对MEMAA收率的影响。结果表明:DT-851为桐酸甲酯与马来酸酐加成反应的适宜催化树脂,当桐酸甲酯用量为20 g时,桐酸甲酯与马来酸酐摩尔物料比为1∶1.3,催化树脂用量为4 g,反应介质甲苯用量为100 mL,回流反应10 h,所得MEMAA总收率为76.9%(以桐油计)。树脂催化溶液法合成MEMAA具有收率高、产物易分离纯化、反应条件温和、树脂可反复使用等特点。
Tung oil is an important forestry biomass resource.Developing Tung oil＇s downstream products and improving Tung oil＇s economic value-added are of great significance.Methyl-α-eleostearate was synthesized from Tung oil by transesterification and then,Methyl-α-Eleostearate-Maleic Anhydride Adduct（MEMAA） was synthesized by resin catalysis method in toluene.The influences of catalytic resin type,resin dosage,reaction duration and material mole ratio on MEMAA were investigated.Experimental results show that DT-851 catalytic resin was suitable for the catalysis of methyl-α-eleostearate-maleic anhydride addition reaction.The appropriate addition conditions are as follows： methyl-α-eleostearate 20 g,methyl-α-eleostearate and maleic anhydride mole ratio 1∶1.3;DT-851 resin dosage 4 g;reaction media 100 mL toluene and refluxing for 10 hours.MEMAA＇s yield was 76.9%（calculated from Tung oil） under the appropriate conditions.Synthesis of MEMAA by resin catalysis in solution features high yield,easy separation and purification,mild reaction condition and good resin use repeatability.
出处
《中南林业科技大学学报》
CAS
CSCD
北大核心
2010年第12期138-141,155,共5页
Journal of Central South University of Forestry & Technology
基金
国家科技部林业公益性行业科研专项(200904023)
关键词
桐油
桐酸甲酯-马来酸酐加合物
桐酸甲酯
催化
Tung oil
methyl-α-eleostearate-maleic anhydride adduct
methyl-α-eleostearate
catalysis
