Evaluation of enthalpy change due to hydrogen desorption for lithium amide/imide system by differential scanning calorimetry
Thermochimica Acta Volume 468 Issue 1-2
Page 35-38
published_at 2008-02
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| File | |
| Title ( eng ) |
Evaluation of enthalpy change due to hydrogen desorption for lithium amide/imide system by differential scanning calorimetry
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| Creator |
Isobe Shigehito
Tokoyoda Kazuhiko
Hanada Nobuko
Leng Haiyan
Fujii Hironobu
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| Source Title |
Thermochimica Acta
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| Volume | 468 |
| Issue | 1-2 |
| Start Page | 35 |
| End Page | 38 |
| 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.
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| Keywords |
calorimetry
thermal analysis
hydrogen absorbing materials
gas-solid reactions
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| NDC |
Physics [ 420 ]
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| Language |
eng
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| Resource Type | journal article |
| Publisher |
Elsevier B.V.
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| Date of Issued | 2008-02 |
| Rights |
Copyright (c) 2007 Elsevier B.V.
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| Publish Type | Author’s Original |
| Access Rights | open access |
| Source Identifier |
[NCID] AA00863013
[ISSN] 0040-6031
[DOI] 10.1016/j.tca.2007.11.013
[DOI] http://dx.doi.org/10.1016/j.tca.2007.11.013
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