| Item type |
デフォルトアイテムタイプ_（フル）(1) |
| 公開日 |
2023-03-18 |
| タイトル |
|
|
タイトル |
Hydrogen desorption properties of Ca-N-H system |
|
言語 |
en |
| 作成者 |
Hino, Satoshi
Ichikawa, Takayuki
Leng, Haiyan
Fujii, Hironobu
|
| アクセス権 |
|
|
アクセス権 |
open access |
|
アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 権利情報 |
|
|
権利情報 |
Copyright (c) 2005 Elsevier B.V. |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
Hydrogen storage materials |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
Gas-solid reactions |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
High-energy ball milling |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
Mechanochemical synthesis |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
Thermal analysis |
| 主題 |
|
|
主題Scheme |
NDC |
|
主題 |
420 |
| 内容記述 |
|
|
内容記述 |
After synthesizing calcium amide (Ca(NH2)2) through the reaction of calcium hydride (CaH2) with ammonia (NH3), the thermal decomposition properties have been examined. The results indicated that Ca(NH2)2 decomposed to calcium imide (CaNH) and NH3 gas with increasing temperature, where the desorption of NH3 started from about 60 °C and peaked around 300 °C in the thermal desorption mass spectra (TDMS). From the X-ray diffraction profiles, the product after heat treatment up to 350 °C was CaNH, but an unknown phase appeared in further heating up to 500 °C. Hydrogen (H2) desorption properties of a mixture of Ca(NH2)2 and CaH2 with 1:3 molar ratio were also examined. The H2 gas of 3.5 wt.% in total was desorbed with two-peak structure in TDMS. The first peak corresponds to the reaction: Ca(NH2)2 + CaH2 → 2CaNH + 2H2, and the second one originates in the reaction: CaNH + CaH2 → Ca2NH + H2. Simultaneously performed differential thermal analysis indicated that the former and the latter reactions were respectively exothermic and endothermic, so that the H2 desorption corresponding to the first peak in TDMS disappeared after long time milling at room temperature. |
|
言語 |
en |
| 出版者 |
|
|
出版者 |
Elsevier B.V. |
| 言語 |
|
|
言語 |
eng |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
| 出版タイプ |
|
|
出版タイプ |
AO |
|
出版タイプResource |
http://purl.org/coar/version/c_b1a7d7d4d402bcce |
| 関連情報 |
|
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
10.1016/j.jallcom.2005.01.052 |
| 関連情報 |
|
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
http://dx.doi.org/10.1016/j.jallcom.2005.01.052 |
| 収録物識別子 |
|
|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
0925-8388 |
| 収録物識別子 |
|
|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA10817249 |
| 開始ページ |
|
|
開始ページ |
62 |
| 書誌情報 |
Journal of Alloys and Compounds
Journal of Alloys and Compounds
巻 398,
号 1-2,
p. 62-66,
発行日 2005-08-02
|
| 旧ID |
20043 |
JAllCompd_398_1-2_62.pdf (383.0 KB)
