ハイドリド誘発による性能増幅と,クバス型水素貯蔵用クロム水酸化ゲルの結合エンタルピー
Ahmad Hamaed1, Tuan K A Hoang, Golam Moula
1Department of Chemistry and Biochemistry, University of Windsor, 401 Sunset Avenue, Windsor, Ontario N9B 3P4, Canada.
Journal of the American Chemical Society
|August 26, 2011
まとめ
研究者らは,クバスの相互作用を用いて新しい水素貯蔵材料を開発した. これらの材料は貯蔵容量を6倍に増やし,室温170barで40.8kgH2 / m3を保持し,DOEの目標を上回る.
科学分野:
- 材料科学 材料科学とは
- 化学工学は化学工学というものです.
- エネルギー貯蔵 エネルギー貯蔵
背景:
- 水素は,高いエネルギー密度とクリーンな副産物 (水) のために理想的な燃料です.
- 現在の水素貯蔵方法は,水素をキャリアに結合する熱力学および運動学的制限があるため,課題に直面しています.
- ハイドリッドや物理吸収材料のような既存の材料には,重大な欠点があります.
研究 の 目的:
- 強化された結合エンタルピーと性能を持つ新しい水素貯蔵材料を開発する.
- 現在の水素貯蔵技術の限界を克服するために.
- 水素貯蔵のための金属有機構造におけるクバスの相互作用の可能性を調査する.
主な方法:
- 合成されたクロムアルキルヒドラジドゲルは,ビス ((trimethylsilylmethyl) クロミウムとヒドラジンから合成されています.
- ゲルを水素化し,低座標Cr水化物中心を作り出しました.
- 水素結合部位を最適化するために金属の調整球を調節した.
主要な成果:
- 室温で水素貯蔵容量を最大6倍まで増加させました.
- 298Kと170bar (40.8kg H(2) /m(3)) で3.23重量%の可逆性貯蔵を持つ素材を開発しました.
- 材料は,線形イソテルム,カバーされた上昇エンタルピー,77Kから298Kまでの完全な容量保持,および運動的障壁がないことを実証しました.
結論:
- キューバスの相互作用に基づく新しい材料は,水素貯蔵容量と性能を大幅に改善します.
- これらの材料は,現在の水素貯蔵ソリューションに有効な代替案を提供し,DOEの目標を達成し,超えることができます.
- 圧力振動吸附機構は,車両用の圧縮ガスタンクでの実用的なアプリケーションを可能にし,範囲を拡大します.
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