Eutectic Phenomenon of LiNH(2)-KH Composite in MH-NH(3) Hydrogen Storage System

Hydrogenation of a lithium-potassium (double-cation) amide (LiK(NH(2))(2)), which is generated as a product by ammonolysis of litium hydride and potassium hydride (LiH-KH) composite, is investigated in details. As a result, lithium amide (LiNH(2)) and KH are generated after hydrogenation at 160 °C a...

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Autores principales: Goshome, Kiyotaka, Jain, Ankur, Miyaoka, Hiroki, Yamamoto, Hikaru, Kojima, Yoshitsugu, Ichikawa, Takayuki
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6479683/
https://www.ncbi.nlm.nih.gov/pubmed/30959780
http://dx.doi.org/10.3390/molecules24071348
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author Goshome, Kiyotaka
Jain, Ankur
Miyaoka, Hiroki
Yamamoto, Hikaru
Kojima, Yoshitsugu
Ichikawa, Takayuki
author_facet Goshome, Kiyotaka
Jain, Ankur
Miyaoka, Hiroki
Yamamoto, Hikaru
Kojima, Yoshitsugu
Ichikawa, Takayuki
author_sort Goshome, Kiyotaka
collection PubMed
description Hydrogenation of a lithium-potassium (double-cation) amide (LiK(NH(2))(2)), which is generated as a product by ammonolysis of litium hydride and potassium hydride (LiH-KH) composite, is investigated in details. As a result, lithium amide (LiNH(2)) and KH are generated after hydrogenation at 160 °C as an intermediate. It is noteworthy that the mixture of LiH and KNH(2) has a much lower melting point than that of the individual melting points of LiNH(2) and KH, which is recognized as a eutectic phenomenon. The hydrogenation temperature of LiNH(2) in the mixture is found to be significantly lower than that of LiNH(2) itself. This improvement of reactivity must be due to kinetic modification, induced by the enhanced atomic mobility due to the eutectic interaction.
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spelling pubmed-64796832019-04-30 Eutectic Phenomenon of LiNH(2)-KH Composite in MH-NH(3) Hydrogen Storage System Goshome, Kiyotaka Jain, Ankur Miyaoka, Hiroki Yamamoto, Hikaru Kojima, Yoshitsugu Ichikawa, Takayuki Molecules Article Hydrogenation of a lithium-potassium (double-cation) amide (LiK(NH(2))(2)), which is generated as a product by ammonolysis of litium hydride and potassium hydride (LiH-KH) composite, is investigated in details. As a result, lithium amide (LiNH(2)) and KH are generated after hydrogenation at 160 °C as an intermediate. It is noteworthy that the mixture of LiH and KNH(2) has a much lower melting point than that of the individual melting points of LiNH(2) and KH, which is recognized as a eutectic phenomenon. The hydrogenation temperature of LiNH(2) in the mixture is found to be significantly lower than that of LiNH(2) itself. This improvement of reactivity must be due to kinetic modification, induced by the enhanced atomic mobility due to the eutectic interaction. MDPI 2019-04-05 /pmc/articles/PMC6479683/ /pubmed/30959780 http://dx.doi.org/10.3390/molecules24071348 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Goshome, Kiyotaka
Jain, Ankur
Miyaoka, Hiroki
Yamamoto, Hikaru
Kojima, Yoshitsugu
Ichikawa, Takayuki
Eutectic Phenomenon of LiNH(2)-KH Composite in MH-NH(3) Hydrogen Storage System
title Eutectic Phenomenon of LiNH(2)-KH Composite in MH-NH(3) Hydrogen Storage System
title_full Eutectic Phenomenon of LiNH(2)-KH Composite in MH-NH(3) Hydrogen Storage System
title_fullStr Eutectic Phenomenon of LiNH(2)-KH Composite in MH-NH(3) Hydrogen Storage System
title_full_unstemmed Eutectic Phenomenon of LiNH(2)-KH Composite in MH-NH(3) Hydrogen Storage System
title_short Eutectic Phenomenon of LiNH(2)-KH Composite in MH-NH(3) Hydrogen Storage System
title_sort eutectic phenomenon of linh(2)-kh composite in mh-nh(3) hydrogen storage system
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6479683/
https://www.ncbi.nlm.nih.gov/pubmed/30959780
http://dx.doi.org/10.3390/molecules24071348
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