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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.date.accessioned2019-11-21T06:18:50Z
dc.date.available2019-11-21T06:18:50Z
dc.date.issued1992
dc.identifier.urihttp://gnosis.library.ucy.ac.cy/handle/7/55434
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.source.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-0043067524&doi=10.1016%2f0021-9517%2892%2990275-M&partnerID=40&md5=432444ba06eadfe40ec79914b7c7c2ad
dc.titleEncapsulation of molecular hydrogen in ion-exchanged a zeolites at 1 atmen
dc.typeinfo:eu-repo/semantics/article
dc.identifier.doi10.1016/0021-9517(92)90275-M
dc.description.volume135
dc.description.issue1
dc.description.startingpage135
dc.description.endingpage146
dc.author.faculty002 Σχολή Θετικών και Εφαρμοσμένων Επιστημών / Faculty of Pure and Applied Sciences
dc.author.departmentΤμήμα Χημείας / Department of Chemistry
dc.type.uhtypeArticleen
dc.description.notes<p>Cited By :13</p>en
dc.source.abbreviationJ.Catal.en
dc.contributor.orcidEfstathiou, Angelos M. [0000-0001-8393-8800]


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