教学实验延伸—环已烯还原为环已醇  

Extension of teaching experiments-converting cyclohexene back to cyclohexanol

作　　者：王宝源 于景成 李童州 黎古丹 谭大志[1] WANG Baoyuan;YU Jingcheng;LI Tongzhou;LI Gudan;TAN Dazhi(Experiment Center of Chemistry,Dalian University of Technology,Dalian 116023,China)

机构地区：[1]大连理工大学基础化学实验中心,辽宁大连116023

出　　处：《实验室科学》2021年第3期118-120,124,共4页Laboratory Science

基　　金：大连理工大学教育教学改革基金项目(项目编号YB2021026)。

摘　　要：环已烯是教学实验的产品,实验室中用处不大,但作为废液处置比较可惜。将环已烯还原为环已醇,与教学实验形成了闭合的循环体系,提高了物质的使用效率,贯彻了绿色化学的理念,加深了学生对环已烯制备实验的理解。总结了几种由环已烯制备环已醇的方法,介绍了间接水合的方法,环己烯先与浓硫酸作用再水解,然后通过蒸馏等操作回收环已醇。实验综合成本较低,开放性较高,适合作为综合性、设计性实验供学生研究。学生自行查阅资料,设计实验,应用所学知识尝试解决实际问题,不仅能提高学习兴趣,也培养了创新思维和实践能力。Cyclohexene is a product for teaching experiments and not that useful in the laboratory.It is a pity to dispose it as a waste liquid.In this paper,cyclohexene is converted back to cyclohexanol,which forms a closed circulation system with the original teaching experiment,which not only improves the efficiency of materials,but also implements the concept of green chemistry,and deepens students’understanding of the preparation experiment of cyclohexene.The paper summarizes several methods of preparing cyclohexanol from cyclohexene in laboratories and introduces the indirect hydration method.In this method,the cyclohexene is firstly reacted with concentrated sulfuric acid and then hydrolyzed,and the cyclohexanol is collected by distillation.The experimental comprehensive cost is low and the openness is high,so it is suitable for student to study as comprehensive and design experiments.By searching information themselves,students design experiments to convert cyclohexene back to cyclohexanol,and try to apply what they have learned to solve practical problems,which can increase their interest in experiment,and develop their innovative thinking and practical ability.

关 键 词：环己醇 环己烯 绿色化学 物料循环 创新 

分 类 号：G482[文化科学—教育学]