燃料化学学报2012，Vol.40Issue(3)：331-336,6.
Ca/Al固体碱催化菜籽油制备生物柴油
Synthesis of biodiesel from rapeseed oil catalyzed by Ca/A1 solid base
摘要
Abstract
Ca/Al solid basic catalysts were prepared by co-precipitation method and used in the synthesis of biodiesel from rapeseed oil;the effect of preparation conditions such as precipitant selection, mole ratio of calcium to aluminum, precipitation temperature, pH value, aging temperature and time, and calcination temperature on their catalytic activity were investigated. Through orthogonal tests, the optimal conditions to prepare catalyst precursor are obtained as Ca/Al = 3, NaOH as precipitant, precipitation temperature of 60℃, pH value of 10, and aging at 90℃ for 18 h. Under the optimal conditions, the catalyst precursor obtained is in the form of Ca4 Al2O6( NO3 )2 ? 10H2O crystal. After calcination at 300℃ for 2 h in N2 atmosphere, Ca/Al mixed oxide is then highly dispersed on the catalyst surface with a pH value of above 26.5. The catalyst exhibits excellent activity in transesterification of rapeseed oil with methanol;the conversion of rapeseed oil and selectivity to fatty acid methyl ester reach 95% and 95.9% , respectively.关键词
Ca/Al复合氧化物/固体碱/酯交换反应/生物柴油/菜籽油Key words
Ca/Al mixed oxide/solid base/transesterification/biodiesel/rapeseed oil分类
化学化工引用本文复制引用
郑华艳,李茜茜,崔丽萍,李忠..Ca/Al固体碱催化菜籽油制备生物柴油[J].燃料化学学报,2012,40(3):331-336,6.基金项目
国家重点基础研究发展规划(973计划,2005CB221204) （973计划,2005CB221204）
山西省自然科学基金(2007011030). （2007011030）
