乙酰水杨酸(阿司匹林)的制备及纯化实验教学研究

doi:10.3866/PKU.DXHX202001033

University Chemistry ›› 2021, Vol. 36 ›› Issue (2): 2001033.doi: 10.3866/PKU.DXHX202001033

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Research into the Instruction on Preparation and Purification of Aspirin

Demei Tian()

National Demonstration Center for Experimental Chemistry Education(Central China Normal University), Wuhan 430079, China

Received:2020-01-20 Accepted:2020-02-25 Published:2020-03-06
Contact: Demei Tian E-mail:tiandm@mail.ccnu.edu.cn

Abstract

Abstract:

This paper introduces the preparation, purification and structure identification of aspirin, especially the teaching method, purpose and result at distinct stages of the experiment. Through problem-based learning with flipped classroom, students' active learning ability and comprehensive experimental ability was improved. By doing experiments independently and discussing the experiment result in groups, students' ability of independent thinking and cooperation was strengthened.

Key words: Aspirin, Comprehensive experiment, Flipped classroom, Problem-based learning

Demei Tian. Research into the Instruction on Preparation and Purification of Aspirin[J].University Chemistry, 2021, 36(2): 2001033.

纯化方法	1% FeCl₃溶液现象	薄层层析结果	回收率
柱层析	橙色	乙酰水杨酸	90%
碳酸氢钠-盐酸	紫色	水杨酸+乙酰水杨酸	85%
乙醇-水	浅紫色	水杨酸+乙酰水杨酸	80%

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Research into the Instruction on Preparation and Purification of Aspirin

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