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固体碱法制备生物柴油及其性能
引用本文:李为民,郑晓林,徐春明,徐鸽,邬国英.固体碱法制备生物柴油及其性能[J].化工学报,2005,56(4):711-716.
作者姓名:李为民  郑晓林  徐春明  徐鸽  邬国英
作者单位:石油大学重质油加工国家重点实验室,北京 102200;江苏工业学院化工系,江苏 常州 213016
基金项目:中国石油化工股份公司资助项目 (102019).~~
摘    要:用共沉淀法制备了水滑石,焙烧后得到Mg-Al复合氧化物,以此为催化剂进行菜籽油的酯交换反应,正交实验表明该酯交换反应的小试最佳工艺条件为: 反应温度65 ℃、醇油摩尔比6∶1、反应时间为3 h,催化剂加入量为菜籽油质量的2%,脂肪酸甲酯(生物柴油)含量为95.7%.得到的生物柴油低温流动性能好,闪点高达170 ℃,氧化安定性好,主要性能指标符合0#柴油标准,可以和0#柴油以任何比例调和.

关 键 词:固体碱催化剂  水滑石  菜籽油  脂肪酸甲酯  生物柴油  氧化安定性  
文章编号:0438-1157(2005)04-0711-06
收稿时间:2004-10-14
修稿时间:2005-1-10  

Preparation and its properties of biodiesel by using solid base catalyst
LI Weimin,ZHENG Xiaolin,XU Chunming,XU Ge,WU Guoying.Preparation and its properties of biodiesel by using solid base catalyst[J].Journal of Chemical Industry and Engineering(China),2005,56(4):711-716.
Authors:LI Weimin  ZHENG Xiaolin  XU Chunming  XU Ge  WU Guoying
Abstract:Hydrotalcite was prepared by co-precipitation of magnesium and aluminum nitrate solution.After calcination, the hydrotalcite was converted to Mg-Al composite oxides.The transesterification of rapeseed oil was carried out by using treated Mg-Al composite oxides as catalyst.Through orthogonal analysis, the optimum reaction conditions obtained for the transesterification were set at temperature 65 ℃, mole ratio of methanol to rapeseed oil 6∶1, reaction time 3 h, and catalyst dosage 2% (on rapeseed oil mass).The yield of fatty acid methyl ester (biodiesel fuel) was 95.7%.The fluidity of the biodiesel fuel at low temperature was much better than that of No.0 diesel fuel and the flash point was as high as 170 ℃ with a sound oxidation stability.Other principal physicochemical properties of the biodiesl fuel were similar to that of No.0 diesel fuel.The biodiesel fuel could be blended with No.0 diesel fuel at any ratio.
Keywords:heterogeneous base catalyst  hydrotalcite  rapeseed oil  fatty acid methyl ester  biodiesel fuel  oxidative stability
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