合成と水素貯蔵の特性 ベー (Be) 12 ベー (OH) 12 ベー (1,3,5-ベンゼントリベンゾ酸) 4 ベー (Be) 12 ベー (OH) 12 ベー (1,3,5-ベンゼントリベンゾ酸) 4 ベー (Be) 12 ベー
Kenji Sumida1, Matthew R Hill, Satoshi Horike
1Department of Chemistry, University of California, Berkeley, California 94720-1460, USA.
Journal of the American Chemical Society
|October 6, 2009
まとめ
研究者らは,ベリリウム基の金属・有機構造を合成し,ベリリウム基の金属・有機構造を合成し,ベリリウム基の金属・有機構造を合成し,ベリリウム基の金属・有機構造を合成し,ベリリウム基の金属・有機構造を合成し,ベリリウム基の金属・有機構造を合成し,ベリリウム基の金属・有機構造を合成した. この新しい枠組みは,効率的な水素貯蔵アプリケーションの大きな可能性を示しています.
科学分野:
- 材料科学 材料科学とは
- 無機化学 無機化学とは
- ナノテクノロジー ナノテクノロジー
背景:
- メタル・オーガニック・フレームワーク (MOF) は,調整可能な多孔構造を持つ結晶材料です.
- 高表面積のMOFは,ガス貯蔵および分離アプリケーションに不可欠です.
- ベリリウムベースのMOFは以前報告されていません.
研究 の 目的:
- 最初の結晶性ベリリウムベースの金属有機骨組みを合成する.
- その構造的性質と表面積を特徴付けるために.
- 水素貯蔵の可能性を評価する.
主な方法:
- ベリリウム窒素と1,3,5-ベンゼントリベンゾ酸 (H(3) BTB) を含む水熱合成.
- X線微分とガス吸附測定 (BET表面積) を用いた特徴付け.
- 水素 (H(2)) 吸収同温度は77Kと298Kで測定されました.
主要な成果:
- 新型ベリリウムベースのMOF,Be () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () ()
- MOFは,前例のないサドル状の[Be(12)(OH)(12)](12+) リング構造を示し,3,12ネットを形成しています.
- 記録的なBET表面積4030 m(2) / gを達成し,メイングループまたは共性有機フレームワークでは最高でした.
- 優れた水素貯蔵能力が実証されている: 1 bar/77 Kで1.6 wt %, 100 bar/77 Kで9.2 wt %, 298 Kで2.3 wt %.
結論:
- ベリリウムベースの最初のMOFが合成され,例外的な多孔性を表しています.
- この材料は,高容量水素貯蔵媒体として大きな期待を示しています.
- 合成戦略は,高表面積ベリリウムフレームワークの新しいクラスに道を開く可能性があります.
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