caa a22 4500 44536565X CHVBK 20180317142929.0 cr unu---uuuuu 170323e20110201xx s 000 0 eng 10.1007/s10909-010-0250-z doi (NATIONALLICENCE)springer-10.1007/s10909-010-0250-z Dynamics of HD Molecules Trapped inCages ofZeolite [Elektronische Daten] [Yu Ji, N. Sullivan, J. Hamida] There is considerable interest in the use of mesoporous structures (e.g. zeolites and metal organic frameworks) for hydrogen storage but little is known about the molecular interactions and the dynamics of molecules inside the cages of these structures. In order to determine these properties we have measured the nuclear magnetic spin-lattice and spin-spin relaxation times of HD molecules trapped in the α-cages of zeolite 13X for a wide temperature range 1.6<T<20K. The measurements were made using the technique of nuclear relaxation spectroscopy for which the relaxation process can be described in terms of a set of connected energy baths. The spin-lattice relaxation times depend directly on the heat capacities of the energy baths and thus on the excitations of the trapped HD molecules. Distinct peaks are observed for the spin-lattice relaxation times at low temperatures (T<6K) with a marked exponential temperature dependence for T>12K, corresponding to the onset of intercage diffusion. Springer Science+Business Media, LLC, 2010 Magnetic resonance nationallicence Hydrogen storage nationallicence Energy nationallicence Zeolite nationallicence Ji Yu Department of Physics, University of Florida, 32611, Gainesville, FL, USA aut Sullivan N. Department of Physics, University of Florida, 32611, Gainesville, FL, USA aut Hamida J. Department of Physics, University of Florida, 32611, Gainesville, FL, USA aut Journal of Low Temperature Physics Springer US; http://www.springer-ny.com 162/3-4(2011-02-01), 121-126 0022-2291 162:3-4<121 2011 162 10909 https://doi.org/10.1007/s10909-010-0250-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10909-010-0250-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ji Yu Department of Physics, University of Florida, 32611, Gainesville, FL, USA aut NATIONALLICENCE 700 1- Sullivan N. Department of Physics, University of Florida, 32611, Gainesville, FL, USA aut NATIONALLICENCE 700 1- Hamida J. Department of Physics, University of Florida, 32611, Gainesville, FL, USA aut NATIONALLICENCE 773 0- Journal of Low Temperature Physics Springer US; http://www.springer-ny.com 162/3-4(2011-02-01), 121-126 0022-2291 162:3-4<121 2011 162 10909 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer