Show simple item record

dc.contributor.authorEfstathiou, Angelos M.en
dc.contributor.authorBorgstedt, E. v. R.en
dc.contributor.authorSuib, S. L.en
dc.contributor.authorBennett, C. O.en
dc.creatorEfstathiou, Angelos M.en
dc.creatorBorgstedt, E. v. R.en
dc.creatorSuib, S. L.en
dc.creatorBennett, C. O.en
dc.description.abstractAbout 1.5 and 2.0 μmol/g of molecular HZ is encapsulated in the sodalite and supercages, respectively, of NaA zeolite at 1 atm H2 pressure and temperatures higher than 200°C. At 37°C and 1 atm Hz pressure, encapsulation of molecular H2 occurs only in the supercages. For these conditions, equilibrium (2.3 μmol/g) is obtained only after 24 h of sorption in HZ flow. The site of encapsulation of H2 is probed by exchanging Cs+, Ni2+, and Eu3+ for Na+ cations into the supercage, near the six-membered oxygen window, and sodalite cage, respectively, of zeolite A. The removal of H2 encapsulated in NaA can be studied by programming the temperature in 1 atm Ar gas flow. This method provides an apparent activation energy for diffusion of 26.0 and 11.5 kcal/mol for the H2 encapsulated in the sodalite and supercages, respectively, of NaA zeolite. Diffusivities of H2 for NaA and Eu/NaA zeolites have been determined from isothermal uptake data. © 1992.en
dc.sourceJournal of Catalysisen
dc.titleEncapsulation of molecular hydrogen in ion-exchanged a zeolites at 1 atmen
dc.description.endingpage146 Σχολή Θετικών και Εφαρμοσμένων Επιστημών / Faculty of Pure and Applied SciencesΤμήμα Χημείας / Department of Chemistry
dc.description.notes<p>Cited By :13</p>en
dc.contributor.orcidEfstathiou, Angelos M. [0000-0001-8393-8800]

Files in this item


There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record