Thermodynamic properties of metal amides determined by ammonia pressure-composition isotherms
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ID | 28860 |
本文ファイル | |
著者 |
Hino, Satoshi
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キーワード | Hydrogen storage materials
Pressure-composition isotherms
Gas-solid reactions
Van't Hoff plot
Heat of formation
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NDC |
化学
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抄録(英) | Thermodynamic properties of Mg(NH2)(2) and LiNH2 were investigated by measurements of NH3 pressure-composition isotherms (PCI). Van't Hoff plot of plateau pressures of PCI for decomposition of Mg(NH2)(2) indicated the standard enthalpy and entropy change of the reactions were Delta H degrees = (120 +/- 11) kJ . mol(-1) (per unit amount of NH3) and Delta S degrees= (182 +/- 19) J . mol(-1) . K-1 for the reaction: Mg(NH2)(2) -> MgNH +NH3, and Delta H degrees= 112 kJ . mol(-1) and Delta S degrees = 157 J . mol(-1) K-1 for the reaction: MgNH -> (1/3)Mg3N2 + (1/3)NH3. PCI measurements for formation of LiNH2 were carried out, and temperature dependence of plateau pressures indicated Delta H degrees = (-108 +/- 15) kJ . mol(-1) and Delta S degrees = (-143 +/- 25) J. mol(-1) . K-1 for the reaction: Li2NH + NH3 -> 2LiNH(2).
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掲載誌名 |
Journal of Chemical Thermodynamics
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巻 | 42巻
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号 | 1号
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開始ページ | 140
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終了ページ | 143
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出版年月日 | 2010-01
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出版者 | Academic Press LTD
Elsevier Science LTD
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ISSN | 0021-9614
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NCID | |
出版者DOI | |
言語 |
英語
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NII資源タイプ |
学術雑誌論文
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広大資料タイプ |
学術雑誌論文
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DCMIタイプ | text
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フォーマット | application/pdf
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著者版フラグ | author
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権利情報 | Copyright (c) 2009 Elsevier Ltd.
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関連情報URL | |
部局名 |
先進機能物質研究センター
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