高容量および重量測定水素貯蔵容量へのルートとして濃縮されたHKUST-1モノライト
David Gerard Madden1,2, Daniel O'Nolan3, Nakul Rampal1
1The Adsorption & Advanced Materials Laboratory (A2ML), Department of Chemical Engineering & Biotechnology, University of Cambridge, Philippa Fawcett Drive, Cambridge CB3 0AS, U.K.
Journal of the American Chemical Society
|July 25, 2022
まとめ
研究者らは,効率的な水素 (H2) 貯蔵のための新しい単体金属有機フレームワーク (MOF) を開発した. この材料は,水素燃料を供給するための圧力要求を大幅に削減し,水素経済を推進します.
科学分野:
- 材料科学
- 化学工学
- エネルギー貯蔵
背景:
- 水素経済には,効率的で安全な水素 (H2) 貯蔵ソリューションが必要です.
- メタル・オーガニック・フレームワーク (MOF) は理論的には高いH2貯蔵能力を有しているが,実用的な製法には欠けている.
- 性能を損なうことなく使用可能な形態にMOFを濃縮することは重要な課題です.
研究 の 目的:
- 高通量スクリーニングにより,H2貯蔵のための最適なMOF材料を特定する.
- モノリシックMOF (monoMOF) を合成し,実用的なH2貯蔵用として特徴づけること.
- 濃縮されたモノMOFのH2供給性能を温度・圧力の変動システムで評価する.
主な方法:
- MOFデータベースの高速コンピューティングスクリーニング
- 最適化された単体MOFの合成と特徴付け.
- 様々な条件 (温度,圧力) の下での水素の貯蔵と配送の性能試験
主要な成果:
- 濃縮されたモノMOFは50バーと77Kで46gのL-1H2の貯蔵密度を達成します.
- 25〜50バーの動作圧力で41〜42gのL-1でH2を供給する.
- 圧縮されたH2ガスと比較して,送料圧力は最大83%低下しています.
結論:
- 開発された単体MOFは,体積 H2 貯蔵のための重要な進歩です.
- この材料は,H2の供給のための動作圧力の要求を低減し,安全性と実用性を高めます.
- この発見は,水素経済における高密度MOFの実用化への道を開く.
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