大学化学 >> 2020, Vol. 35 >> Issue (2): 98-106.doi: 10.3866/PKU.DXHX201906022

师生笔谈 上一篇    下一篇

对BJH方法计算孔径分布过程的解读

张伟庆, 黄滨, 余小岚, 张建辉   

  1. 中山大学化学学院, 广州 510275
  • 收稿日期:2019-06-11 发布日期:2019-10-24
  • 通讯作者: 张建辉 E-mail:ceszjh@mail.sysu.edu.cn

Interpretation of BJH Method for Calculating Aperture Distribution Process

Weiqing Zhang, Bin Huang, Xiaolan Yu, Jianhui Zhang   

  1. School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, P. R. China
  • Received:2019-06-11 Published:2019-10-24

摘要: 介绍了用BJH方法计算介孔孔径分布时对孔隙做了哪些几何假设和忽略、为简化计算做了哪些算术近似,以及各个参数的推导过程、孔径分布计算步骤和要点;还介绍了在目前仪器水平下BJH方法的适用范围,如何对数据进一步整理以便得到所需要的分析测试报告。文章为后续调整测试参数、改进测试方法也有一定的参考作用,还讨论了在阅读实验报告时经常遇到的一些问题。

关键词: 介孔, 孔径分布, Kelvin方程

Abstract: This paper introduces the geometric assumptions and neglects of the pore size distribution calculated by BJH method, the arithmetic approximation for simplified calculation, the derivation process of each parameter, the calculation steps and key points of the pore size distribution. This paper also introduces the application scope of BJH method at the current instrument level, and how to further integrate the data. In order to get the required analysis and test report, references are provided for the subsequent adjustment of test parameters and improvement of test methods. Some problems often encountered in reading experimental reports are also discussed.

Key words: Mesoporous, Distribution of pore size, Kelvin equation

MSC2000: 

  • G64