University Chemistry ›› 2020, Vol. 35 ›› Issue (2): 98-106.doi: 10.3866/PKU.DXHX201906022

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Interpretation of BJH Method for Calculating Aperture Distribution Process

Weiqing Zhang,Bin Huang,Xiaolan Yu,Jianhui Zhang*()   

  • Received:2019-06-11 Accepted:2019-10-08 Published:2019-10-24
  • Contact: Jianhui Zhang


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


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