摘要
在教学实践的基础上,推荐了一个有机化学实验。用15%稀硫酸做脱水剂,保持甲醇过量条件下,以甲醇与叔丁醇为反应物,控制在80~85℃反应,利用维氏分馏柱收集40~60℃馏分,即得甲基叔丁基醚粗品,水洗,干燥,加金属钠回流精制。通过实验可以让学生掌握醇分子间脱水反应制备醚的原理和操作;掌握分馏、洗涤、干燥、过滤、回流、蒸馏等基本实验操作技能。
Based on the teaching practices, an organic experiment was recommended. Using 15% dilute sulphuric acid as dehydrant, keeping methanol excessive, methanol and tert--butanol were reacted under 80 -85℃, Vickers fractionation column was used to collect the fraction at 40--60℃, coarse product of methyl tert--butyl ether(MTBE) was gotten. Then, coarse MTBE was washed by water, dried by desiccant, reflux with sodium metal. The aims of this experiment are making the students grasp the principle and practice of synthesis of ether by dehydration between the alcohol molecules, and grasp the basic practices of fractionation, washing, dry, filter, reflux, distillation etc.
出处
《陕西国防工业职业技术学院学报》
2012年第2期26-28,40,共4页
Journal of Shaanxi Institute of Technology
基金
陕西省教育科学“十一五”规划2010年立项课题“基于工作过程的《有机化学》课程项目化教学实践研究”(课题批准号:SGH10340)
陕西省高职高专教育学会2012年度高等职业教育教学改革研究项目(编号:12P29)研究成果
关键词
甲基叔丁基醚
制备
实验
推荐
MTBE
Synthesis
Experiment
Recommendation