Evaluation of Mesopores in Porous Silica by the BJH Method No. 7
This is a document introducing the evaluation of mesopores in porous silica using the BJH method!
This document introduces the evaluation of mesopores in porous silica using the BJH method, utilizing graphs and other visuals. The pore distribution of mesopores, analyzed using the BJH theory (Barrett-Joyner-Halenda), is based on three assumptions derived from the adsorption isotherm. Due to capillary phenomena, the saturation vapor pressure of the adsorbate decreases within mesopores (macropores) at a given temperature, leading to the condensation of the adsorbate (= capillary condensation). 【Three Assumptions of BJH Theory】 ■ Pore shape is cylindrical ■ The meniscus is hemispherical with a contact angle of 0° ■ Correction for the adsorbed layer (thickness t) *For more details, please refer to the PDF document or feel free to contact us.
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