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Kwak, Ja Hun
Molecular Catalysis lab
Research Interests
  • Heterogeneous catalysis, molecular catalysis, ASlumima, zeolites

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Probing the reaction pathway of dehydrogenation of the LiNH2+LiHmixture using in situ H-1 NMR spectroscopy

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Title
Probing the reaction pathway of dehydrogenation of the LiNH2+LiHmixture using in situ H-1 NMR spectroscopy
Other Titles
Probing the reaction pathway of dehydrogenation of the LiNH2+LiHmixture using in situ H-1 NMR spectroscopy
Author
Hu, Jian ZhiKwak, JahunYang, ZhenguoOsborn, WilliamMarkmaitree, TippawanShaw, Leon L.
Keywords
HYDROGEN STORAGE PROPERTIES; N-H SYSTEMS; MECHANICAL ACTIVATION; LITHIUM HYDRIDE; H-2 STORAGE; AMIDE; LINH2; LIH; TEMPERATURE; IMIDE
Issue Date
2008-06
Publisher
ELSEVIER SCIENCE BV
Citation
JOURNAL OF POWER SOURCES, v.181, no.1, pp.116 - 119
Abstract
Using variable temperature in situ H-1 NMR spectroscopy on a mixture of LiNH2 + LiH that was mechanically activated using high-energy ball milling, the dehydrogenation of the LiNH2 + LiH to Li2NH + H-2 Was investigated. The analysis indicates NH3 release at a temperature as low as 30 degrees C and rapid reaction between NH3 and LiH at similar to 150 degrees C. The transition from NH3 release to H-2 appearance accompanied by disappearance of NH3 confirms unambiguously the two-step elementary reaction pathway proposed by other workers. (C) 2008 Elsevier B.V. All rights reserved
URI
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DOI
10.1016/j.jpowsour.2008.03.034
ISSN
0378-7753
Appears in Collections:
ECHE_Journal Papers
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