制备生物柴油的KOH/MgO固体碱的研制  

Preparation of solid base catalyst KOH/MgO for biodiesel production

作　　者：肖丽凤[1] 王巧妍 钟南京[2] XIAO Li-feng WANG Qiao-yan ZHONG Nan-jing(Department of Biomedicine, Zhongshan Torch Technology College, Zhongshan 528436, Guangdong, China School of Food Science, Guangdong Pharmaceutical University, Zhongshan 528458, Guangdong, China)

机构地区：[1]中山火炬职业技术学院生物医药系,广东中山528436 [2]广东药学院食品科学学院,广东中山528458

出　　处：《粮食与油脂》2017年第3期75-77,共3页Cereals & Oils

基　　金：广东省高等院校学科与专业建设专项基金科研类项目(2013LYM_0048);中山市科技计划项目(2014A2FC319)

摘　　要：采用浸渍法制备KOH/MgO固体碱催化剂,并用X–射线衍射对催化剂进行表征,同时对固体碱催化剂制备条件及酯交换反应催化剂用量进行了优化。结果表明,催化剂在焙烧过程中有部分K2CO3生成,当KOH负载量20%、焙烧温度650℃、焙烧时间6 h、酯交换反应温度75℃、时间2.5 h、醇油摩尔比6∶1,催化剂用量为棕榈油质量的4.5%时,脂肪酸甲酯的得率达90.0%±2.0%,所得催化剂在生物柴油制备过程中具有可观的应用前景。Solid base catalyst KOH/MgO was prepared through impregnation for biodiesel production. The catalyst was characterized by X–ray diffraction,and catalyst preparation process and the amount of catalyst for transesterification were optimized. Results indicated that some K2CO3 was generated during the calcination,with KOH amount 20% in KOH/MgO,calcination time 6 h and temperature 650 ℃,the solid base catalyst was prepared and then used to catalyze the transesterification reaction. Fatty acid methyl ester yield was 90.0% ±2.0% after 2.5 h at 75 ℃,with molar ratio of palm oil to methanol 6∶1 and the base catalyst amount 4.5% of oil. The results indicated that the present solid base catalyst was potential in practical biodiesel production.

关 键 词：KOH/MgO 固体碱 棕榈油 生物柴油 

分 类 号：TS229[轻工技术与工程—粮食、油脂及植物蛋白工程]