“流动吸附法测定多孔材料比表面积”实验的创新性改进及教学实践  

Innovative Improvement and Teaching Practice of the“Determination of Specific Surface Area of Porous Materials by Flow Adsorption Method”

作　　者：李珊珊 赵明[1] 王健礼[1] 李宏刚[1] 郭彩红[1] LI Shanshan;ZHAO Ming;WANG Jianli;LI Honggang;GUO Caihong(College of Chemistry,Sichuan University,Chengdu 610064,China)

机构地区：[1]四川大学化学学院,成都610064

出　　处：《实验科学与技术》2023年第4期15-20,共6页Experiment Science and Technology

基　　金：四川大学实高等教育教学改革工程研究项目(SCU9131)。

摘　　要：针对基础物理化学实验“流动吸附法测定多孔材料比表面积”数据重现性差、实验内容单一和可视化实验现象少的不足,从实验仪器、实验内容和实验现象三方面对原有实验进行了改进。通过改进气体流量控制和显示系统,并设计可自动封闭的吸附仪,显著提高了实验数据的重现性。改进后的装置在实际教学中的试用表明其具有可推广性。在此基础上,结合国家“双碳”战略,拓展实验内容,引入多孔材料的典型应用——CO_(2)捕集,并增加可视化实验现象,利用指示剂颜色变化判断吸附终点。改进后实验将前沿科技与经典实验结合,体现了科教融合和创新发展的教学理念,使学生了解科技前沿,增强专业认同感,有益于培养创新思维和科研能力。The basic physical experiment of“determining the specific surface area of porous materials by flow adsorption method”has been improved from three aspects of instrument,content,and phenomena in view of the poor repeatability,the lack of single experimental content and less visual experimental phenomena.By replacing the flow control and display system and using the self-designed adsorption instrument,the stability of the experiment results is significantly improved.The application of the improved device in practical teaching shows that it can be popularized.On the basis,a typical application of porous materials in CO_(2)capture has been introduced into the experiment in combination with the national“double carbon”strategy.Then visual experimental phenomena are added,and the color change of the indicator is used to judge the adsorption end point.This improved experiment combines cutting-edge science and technology with classic experiments,which embodies the teaching concept of integration of science,education and innovative development,so that students can understand the cutting-edge of science and technology,enhance their professional identity,and cultivate innovative thinking and scientific research ability.

关 键 词：实验改进 气固吸附 多孔材料 比表面积 CO_(2)捕集 

分 类 号：G642.423[文化科学—高等教育学]