计算机模拟在物理化学BET多分子层吸附理论教学中的应用  

Application of Computer Simulation in the Teaching of BET Multimolecular Adsorption Theory in Physical Chemistry

作　　者：黄建花[1] 张伟[1] Jianhua Huang;Wei Zhang(Department of Chemistry,Zhejiang Sci-Tech University,Hangzhou 310018,China.)

机构地区：[1]浙江理工大学化学系,杭州310018

出　　处：《大学化学》2024年第1期369-376,共8页University Chemistry

基　　金：浙江省第一批省级课程思政教学研究项目(浙教函〔2021〕47号);浙江理工大学一流课程建设项目(浙理工教〔2021〕47号)。

摘　　要：BET多分子层吸附理论抽象但应用广泛,BET公式的推导过程涉及较多数学知识,学生很难透彻理解BET公式的物理意义。面对比表面分析仪输出的吸附脱附等温线和比表面积,学生只能生搬硬套,难以达到预期的教学效果。本文利用计算机模拟气体分子在固体表面的吸附脱附过程,通过调整吸附脱附常数,可分别得到第I、II、III类吸附等温线;结合实时可视化使学生能直观看到气体分子在固体表面的吸附脱附动力学,从而能更好地理解BET理论。计算机模拟辅助教学还能活跃课堂气氛,实现教与学互动,激发学生的求知欲和科研兴趣,提高教学质量。The BET(Brunauer-Emmett-Teller)theory of multimolecular adsorption is abstract yet widely applicable,and its equation involves complex mathematical derivations that are often difficult for students to grasp.Consequently,students may struggle to correctly interpret adsorption-desorption isotherms and specific surface area data generated by automated specific surface analyzers,leading to unsatisfactory educational outcomes.This paper introduces the use of computer simulations to model the adsorption-desorption process of gas molecules on solid surfaces.By adjusting the adsorption-desorption constants,the simulations can generate Type I,II,and III adsorption isotherms.The real-time visualization allows students to intuitively understand the dynamics of gas molecule adsorption and desorption on solid surfaces,thereby enhancing their comprehension of BET theory.The incorporation of computer simulation into teaching not only enlivens the classroom environment but also fosters an interactive teaching-learning experience,stimulating students’curiosity and research interest while improving the overall quality of education.

关 键 词：计算机模拟 固体表面 BET公式 吸附-脱附动力学 吸附等温线 

分 类 号：G64[文化科学—高等教育学] O6[文化科学—教育学]