Adsorption of H2 at 20 K on (Na,K) ETS-10 is studied by means of infrared spectroscopy and molecular mechanics simulations. The occurrence of three steps is evidenced, consisting of: (i) specific interaction of H2 with extraframework cations; (ii) aspecific interaction with the channel walls and (iii) pore-filling by a liquid-like phase. Spectroscopic evidence is also given that (Na,K) ETS-10 promotes ortho-para conversion of the adsorbed H2 species.
|Original language||English (US)|
|Title of host publication||From Zeolites to Porous MOF Materials - The 40th Anniversary of International Zeolite Conference|
|Number of pages||9|
|ISBN (Print)||0444530681, 9780444530684|
|State||Published - 2007|
|Name||Studies in Surface Science and Catalysis|
Bibliographical noteFunding Information:
The financial support of Regione Piemonte in the frame of research project “Innovative materials for hydrogen storage” is gratefully acknowledged.