Pore volume is typically measured using techniques such as nitrogen adsorption-desorption isotherms, mercury intrusion porosimetry, and gas pycnometry. The most common method is the Barrett-Joyner-Halenda (BJH) technique, which analyzes the desorption branch of the nitrogen adsorption isotherm to calculate pore size and volume. These measurements help to characterize the porous structure, which is essential for designing efficient catalysts.
