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Citation: Weiqing Zhang, Bin Huang, Guping Hu. 对BET方程中C的探讨[J]. University Chemistry, ;2022, 37(1): 210404. doi: 10.3866/PKU.DXHX202104049 shu

对BET方程中C的探讨

School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China

Corresponding author: Guping Hu, huguping@msil.sysu.edu.cn
Received Date: 23 April 2021

从动力学和统计热力学角度介绍了BET方程中C的物理意义，分析了C的大小对吸附等温线形状的影响，推导了吸附等温线上拐点、B点位置和C大小的关系以及达到单程吸附量时C与相对压力、覆盖表面分数的关系。文章用数学方法介绍了保证C为正值的方法，解释了数据分析中的一个常见现象，还从BET方程的数学形式及物理意义探讨了C的下限。
- BET equation,
- Adsorption isotherm,
- Inflection point
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