Determination of the adsorption isotherms of hydrogen on activated carbonsabove the Critical Temperature of the adsorbate over wide temperature and pressure ranges

We present a detailed comparison between experimental adsorption measuremen ts and the excess adsorption predicted by the Ono -Kondo lattice model. The study was performed for high-pressure adsorption of hydrogen above the cri tical point on microporous adsorbents. The experimental adsorption isotherm s of hydrogen on the activated carbon AX-21 as well as others are compared with those of theory over the temperature range of 77-273 K and for pressur es of up to 6 MPa.