摘要
以高酸值油脂和甲醇为原料,研究了六种无机盐在生物柴油酯化反应中的催化活性。结果表明,硫酸氢钠的催化酯化活性最好,并得到最优化条件如下:醇酸物质的量10∶1,反应温度70℃,反应时间300m in,催化剂用量4%,酯化率达到90.5%。优化条件下,二次酯化率达到98%,且催化剂易回收,具有良好的重复使用性能。
Catalytic activity of six inorganic salts in the esterification of high acid value oil with methanol was studied. Results showed that catalytic activity of sodium hydrogen sulfate was the best . The optimal parameters of esterification were as follows ： molar ratio of methanol to oil 10： 1 , reaction temperature 70℃, reaction time 300rain and the amount of sodium hydrogen sulfate 4% ,the transformation rate was 90. 5% , use two steps esterification , the transformation rate was 98%. The catalyst could be recovered easily and used repeatedly.
出处
《山东化工》
CAS
2009年第8期7-9,共3页
Shandong Chemical Industry
基金
山东科技大学科学研究春蕾计划项目(编号:06540040704)
关键词
生物柴油
催化酯化
无机盐
硫酸氢钠
biodiesel
catalytic esterification
inorganic salts
sodium hydrogen sulfate
