碳基固体酸催化高酸值生物柴油原料降酸效果  

Effects of reducing high-acid of biodiesel feedstock with high acid value by carbon-based solid acid

作　　者：王督[1] 苏有勇[1,2] 王华[2] 吴桢芬[1,2] 陈飞[1] 

机构地区：[1]昆明理工大学现代农业工程学院,昆明650224 [2]昆明理工大学生物能源工程实验室,昆明650093

出　　处：《农业工程学报》2009年第11期274-277,共4页Transactions of the Chinese Society of Agricultural Engineering

基　　金：国家支撑计划(2007BAD32B03);云南省应用基础研究(2008E042M);云南省教育厅基金(09J0003)

摘　　要：以淀粉和对甲苯磺酸合成的碳基固体酸为催化剂,油酸模拟高酸值生物柴油原料进行酯化降酸的试验研究,考察醇油比、催化剂用量、反应温度、反应时间及重复利用性等因素对转化率的影响。通过单因素与正交试验确定最佳工艺条件:醇油质量比为1︰4,催化剂用量为油酸质量的6.5%,反应时间6h,反应温度85℃,在此条件下转化率可达80.21%,重复使用6次,转化率仍保持在70%以上。碳基固体酸催化剂对高酸值原料酯化降酸有很好的催化活性,易于分离且具有良好的稳定性。Using carbon-based solid acid as catalyst synthesized from starch and P-Toiuene Suitonic acid, oleic acid as raw materials to simulate the high acid value of raw materials for biodiesel was explored to reduce the acid value, and the amount of catalyst, the ratio of methanol to oleic acid, reaction temperature, reaction time and reusability were investigated. The optimum conditions were determined with the single factor and orthogonal tests. The experimental results showed that the conversion rate of oleic acid was 78.82% by following conditions： the ratio of methanol to oleic acid was 1 ： 4 （W/W）, carbon-based solid acid was 6.5% （W/W） as catalyst, esterification reaction temperature was 85℃ and reaction time 6 h. The conversion rate still maintained above 70% after repeatedly using 6 times. The carbon-based solid acid catalyst has high catalytic activity, easy separation, good stability.

关 键 词：酯化反应 油酸 生物柴油 碳基固体酸 

分 类 号：TK6[动力工程及工程热物理—生物能]