Pore size distribution is usually determined by gas adsorption techniques from the gas adsorption isotherm. For samples with 2 to 50-nm pore structure, BJH is the most commonly used method for calculating pore size distribution.
In order to get good results, sufficient isotherm sorption points are needed. However, the adsorbed volume at a certain relative pressure usually cannot be predicted before measurement, resulting in insufficient points for the BJH pore size distribution calculation.
If additional data points need to be collected between target pressures, a feature in Micromeritics software named Maximum Volume Increment can be used. When using this feature, if the maximum increment has been adsorbed since the last collected data point, then another point is equilibrated and collected.
Pore size distribution is usually determined by gas adsorption techniques from the gas adsorption isotherm. For samples with 2 to 50-nm pore structure, BJH is the most commonly used method for calculating pore size distribution.
In order to get good results, sufficient isotherm sorption points are needed. However, the adsorbed volume at a certain relative pressure usually cannot be predicted before measurement, resulting in insufficient points for the BJH pore size distribution calculation.
If additional data points need to be collected between target pressures, a feature in Micromeritics software named Maximum Volume Increment can be used. When using this feature, if the maximum increment has been adsorbed since the last collected data point, then another point is equilibrated and collected.
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