Pore structure characterisation of sorbents

The Individual Protection Working Group can determine the following structural parameters of porous solids:

Adsorption isotherms of water, benzene and organic material or mixture of materials
BET specific surface area and micropore volumes by means of the Dubinin-Astakhov equation using measured azotes or butane isotherms
Adsorption heat of water, benzene and other liquids by means of immersion
Pore radius distribution ( 2 – 20,000 nm) by means of intrusion porosimetry (high-pressure mercury porosimeter)
Absolute density (skeleton density) by means of pycnometry in toluene
Apparent density (grain density) pycnometry in mercury

: Test set-up to determine pore radius distribution (high-pressure porosimeter).