### 利用红外振动光谱研究甲醇-乙酸甲酯共沸体系的微观结构

• 收稿日期:2021-05-17 录用日期:2021-06-21 发布日期:2021-07-01
• 通讯作者: 边红涛 E-mail:htbian@snnu.edu.cn
• 作者简介:边红涛, Email: htbian@snnu.edu.cn
• 基金资助:
陕西师范大学大学生创新创业训练计划(S202010718215);中央高校基金团队项目(GK202001009)

### Study on Microscopic Structure of Methanol-Methyl Acetate Azeotropic System by Infrared Spectroscopy

Jiman He, Qiaoqiao Bai, Jinxia Hu, Yuhan Xu, Yiyi Duan, Hongtao Bian()

• Received:2021-05-17 Accepted:2021-06-21 Published:2021-07-01
• Contact: Hongtao Bian E-mail:htbian@snnu.edu.cn

Abstract:

Infrared spectroscopy is widely used in scientific research and industrial analysis for measuring the molecular structure and identifying the composition of compounds. The composition and microstructure of the system under study can be determined by monitoring the intensity and position of the infrared absorption peak, and the dynamics information can be further unraveled. With the development of technology, infrared spectrometers are gradually miniaturized and the measurements are simplified significantly. However, the infrared spectroscopic measurement is still not included in undergraduate physical chemistry experiment. Based on this and for the purpose of carrying out the idea of integration of research and teaching, the authors attempt to extend the innovation and entrepreneurship training program "kinetic research on azeotrope separation using ionic liquids as entrainers" to undergraduate physical chemistry, in hopes to fill the gap that the infrared spectroscopic measurement method is not integrated in the physical chemistry experiment. In this paper, methanol methyl acetate azeotropic system is selected as the research object, the understanding of whose microscopic structure could provide valuable insights for in polyvinyl alcohol industry. In addition, azeotropic system is also very important in the study of thermodynamic phase equilibrium in physical chemistry, but students usually do not have a direct and clear understanding of its microstructure at the molecular level. Therefore, it is of great significance to study the microstructure of azeotropic system by infrared spectroscopy.

MSC2000:

• G64