When the relative pressure is close to 1, the larger the N2 adsorption volume, the higher the porosity of the sample in the pore area of 1-100 nm (the adsorption curve is the lower half of the adsorption-desorption isotherm)
The larger the volume of N2 adsorption at relative pressure close to 1 indicates the higher the pore rate of the sample in the pore area of 1 - 100 nm (the adsorption curve is the lower half curve of the adsorption-desorption contwinement iso-temperature line)
When the relative pressure is close to 1, the larger the N2 adsorption volume is, the higher the porosity of the sample is in the pore region of 1-100 nm (the adsorption curve is the lower half of the adsorption desorption isotherm)<br>