第 46 卷第 4 期Vol. 46 No. 4
2016 年 8 月Aug 2016

所属栏目:功能材料

桐油脂肪酸甲酯合成工艺与动力学研究
李 科1,蒋剑春1,2*,聂小安1,2,陈 洁1,黄金瑞1,孙 凡3 (1.中国林业科学研究院 林产化学工业研究所;生物质化学利用国家工程实验室;国家林业局 林产化学工程重点开放性实验室;江苏省生物质能源与材料重点实验室,江苏 南京 210042;2. 中国林业科学研究院 林业新技术研究所,北京 100091;3. 南京林业大学 化工学院,江苏 南京 210037)
摘 要:通过碱催化桐油与甲醇的反应合成桐油脂肪酸甲酯,GC-MS测定桐油中桐油酸含量约为70.87%,计算得分子量为873.71;优化工艺为:m(桐油)∶m(甲醇)=100∶27,催化剂用量1%(占油脂质量),水浴70℃下反应90 min时转化率达98.64%;通过动力学研究得出桐油甲酯化的活化能Ea=28.26 kJ·mol-1。
关键词:脂肪酸甲酯;桐油;油脂;生物柴油;动力学
中图分类号:TQ517  文献标识码:A  文章编号:1009-9212(2016)04-0048-04
Preparation and Kinetics of Methyl Esterification of Tung Oil
LI Ke1, JIANG Jian-chun1,2*, NIE Xiao-an1,2, CHEN Jie1, HUANG Jin-rui1, SUN Fan3 (1. Institute of Chemical Industry of Forest Products, CAF; National Engineering Lab for Biomass Chemical Utilization; Key and Open Lab on Forest Chemical Engineering, SAF; Key Lab of Biomass Energy and Material, Jiangsu Province, SFA, Nanjing 210042, China; 2. Institute of New Technology of Forest, CAF, Beijing 100091, China; 3. College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China)
Abstract:Using alkaline as catalysis, methyl eleostearate was synthesized by trans-esterification of methyl alcohol and tung oil. The main fatty acids in tung oil were identified using GC-MS, the contents of eleostearic acid was 70.87%. The optimal synthesis conditions were as following: raw material mass ratio of methyl eleostearateto carbinol was 100:27; dosage of catalyst was 1% of methyl eleostearate, reaction temperature was of 70℃, reaction time was of 90 min. A typical conversion rate of tung oil reached 98.64%; the activation energy was of 28.26 kJ·mol-1.
Key words:methyl ester; tung oil; biodiesel; dynamics
基金项目: 江苏省生物质绿色燃料与化学品重点实验室资助(JSBGFU14007),中央级公益性科研院所基本科研业务费专项资助(CAFYBB2014MA011)。
作者简介:李 科(1985-),男,江苏南京人,助理研究员,硕士,研究方向:生物质资源利用及精细化学品开发研究(E-mail: liketaiping@163.com)。
收稿日期:2016-06-13