气相色谱法监测氧化钙催化制备生物柴油的反应进度  

Monitoring Reactive Degree of Biodiesel Catalyzed by Calcium Oxide via Gas Chromatography

作　　者：刘晓华[1] 吴宗斌[2] 张萍[1] 汤志勇[1] 朱华平[1] 段世杰[2] 毛宗强[2] 

机构地区：[1]中国地质大学材料科学与化学工程学院,武汉430074 [2]清华大学核能与新能源技术研究院,北京100084

出　　处：《化学学报》2007年第18期2025-2028,共4页Acta Chimica Sinica

基　　金：清华大学汽车安全与节能国家重点实验室开放基金(No.KF2005-012)资助项目.

摘　　要：建立了一种通过检测氧化钙催化制备生物柴油过程中产生的甘油来监测反应进度的方法.在反应样品中加入草酸、硫酸溶液,除掉由催化剂引入的钙离子,释放与氧化钙结合的甘油,利用气相色谱方法检测甘油的含量.讨论了实验中加入草酸、硫酸的目的及对结果的影响.实验结果表明,此法可用于氧化钙催化制备生物柴油过程中反应进度监测的研究.In this work, a method of quantitatively analyzing glycerol to monitor the reactive degree of biodiesel catalyzed by calcium oxide was established. The calcium ions originated from catalysts were removed and the glycerol combined with calcium oxide was released by adding oxalic acid and sulfuric acid to the products. The amount of glycerol was measured by the gas chromatography. The aims and the influences of oxalic acid, sulfuric acid in the system were discussed. At the same time, the method was used in studying the kinetics of the transesterification.

关 键 词：生物柴油 检测 甘油 气相色谱 转化率 

分 类 号：TE667[石油与天然气工程—油气加工工程]