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ID 23398
file
creator
Isobe, Shigehito
Tokoyoda, Kazuhiko
Hanada, Nobuko
Leng, Haiyan
Fujii, Hironobu
subject
calorimetry
thermal analysis
hydrogen absorbing materials
gas-solid reactions
NDC
Physics
abstract
Enthalpy change (ΔH) due to hydrogen desorption (H-desorption) for the lithium amide/imide system was evaluated by differential scanning calorimetry (DSC) measurement. In order to obtain the accurate and precise value of ΔH, we have paid special attention to following two points for correcting raw experimental data. One is to determine a cell constant of DSC equipment, which was evaluated by using the TiO2-doped MgH2 compound as a reference because of its quite similar hydrogen desorption properties to that of the lithium amide/imide system. The other is to estimate the sample amount corresponding to the H-desorption reaction from weight loss in the thermogravimetric (TG) analysis. By performing both the corrections, the ΔH value due to the H-desorption reaction from LiNH2 + LiH to Li2NH + H2 was evaluated to be 67 kJ/mol H2.
journal title
Thermochimica Acta
volume
Volume 468
issue
Issue 1-2
start page
35
end page
38
date of issued
2008-02
publisher
Elsevier B.V.
issn
0040-6031
ncid
publisher doi
language
eng
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
author
rights
Copyright (c) 2007 Elsevier B.V.
relation is version of URL
http://dx.doi.org/10.1016/j.tca.2007.11.013
department
Institute for Advanced Materials Research