Hydrogen-deuterium exchange in bulk LiBH4
| Autor: | Andreas Züttel, A. Borgschulte, A.-M. Racu, J. Schoenes, P. Hug |
|---|---|
| Přispěvatelé: | Photo Conversion Materials |
| Jazyk: | angličtina |
| Rok vydání: | 2008 |
| Předmět: |
Hydrogen
Analytical chemistry chemistry.chemical_element Hydrogen atom Thermogravimetry symbols.namesake Deuterium Diffusion process chemistry Physics::Plasma Physics symbols Hydrogen–deuterium exchange Physics::Atomic Physics Physical and Theoretical Chemistry Diffusion (business) Raman spectroscopy SDG 6 - Clean Water and Sanitation |
| Zdroj: | Journal of Physical Chemistry A, 112(21), 4749-4753. American Chemical Society Borgschulte, A, Zuttel, A, Hug, P, Racu, A M & Schoenes, J 2008, ' Hydrogen-deuterium exchange in bulk LiBH4 ', Journal of Physical Chemistry A, vol. 112, no. 21, pp. 4749-4753 . https://doi.org/10.1021/jp711902p |
| ISSN: | 1520-5215 1089-5639 |
| DOI: | 10.1021/jp711902p |
| Popis: | Because of its apparent simplicity, diffusion of hydrogen in solids can be regarded as a general model system for diffusion. However, only rudimentary knowledge exists for the dynamics of hydrogen in complex hydrides. Insight into the specific diffusion process is given by hydrogen-deuterium exchange experiments. Thermogravimetry and Raman spectroscopy are used to measure the hydrogen-deuterium exchange during the decomposition of LiBH4. At a temperature of 523 K the self-diffusion constant of deuterium in LiBH4 is estimated to be D approximately 7 x 10(-14) m(2) s(-1). A careful analysis of the Raman spectra shows that hydrogen is statistically exchanged by deuterium in LiBH4; i.e., the diffusing species is assumed to be the single hydrogen atom. |
| Databáze: | OpenAIRE |
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