固体酸催化剂催化脂肪酸甲酯化反应  

Esterification of Fatty Acid with Methanol Catalyzed by Sollid Acid PW/SBA-15

作　　者：张搏[1] 

机构地区：[1]广西科学院国家非粮生物质能源工程技术研究中心,广西南宁530007

出　　处：《化学反应工程与工艺》2010年第1期88-91,共4页Chemical Reaction Engineering and Technology

基　　金：广西科学院项目(09YJ17SW03);广西科学院攻关项目(0895003-4-1);桂科院研究项目(0701)

摘　　要：以直接合成法制备了磷钨酸改性的介孔分子筛PW/SBA-15催化剂,用X射线衍射和红外光谱对催化剂进行了表征。并将该催化剂用于脂肪酸与甲醇的酯化反应。考察了醇酸比、催化剂用量、反应温度对酯化反应的影响。结果表明,催化剂PW/SBA-15具有良好的水热稳定性和纯硅SBA-15的介孔结构。在反应温度90℃、催化剂用量为硬脂酸质量的5%、醇酸物质的量比为27:1、反应时间4 h的条件下脂肪酸的转化率可达94%。The mosoporous molecular sieve PW/SBA-15 modified with phosphotungstic acid was obtained by direct synthesis. The samples were characterized by X ray diffraction （XRD） and Fourier transform infrared spectroscopy （FTIR）. Effect of molar of methanol to acid, catalyst dosage and reaction temperature on the esterification of fatty acid with methanol was investigated over PW/SBA-15. The results indicated that the catalyst showed a good hydrothermal stability and the structure was consistent with pure silica SBA-15. Conversion of the fatty 90 ℃, catalyst dosage 5 %, molar ratio of methanol to fatty acid was 94% under the temperature acid 27 ： 1 and reaction time 4 h.

关 键 词：固体酸 磷钨酸 SBA-15介孔分子筛 脂肪酸甲酯 甲酯化 

分 类 号：TQ645[化学工程—精细化工]