Adsorption of H(2) 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 H(2) 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 H(2) species.
H(2) adsorption and ortho-para conversion on ETS-10
Vitillo J;
2007-01-01
Abstract
Adsorption of H(2) 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 H(2) 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 H(2) species.
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