トレストアセチレン除去を促進する柔軟で堅固な金属有機フレームワークのための穴のスペースの最適化
Jun Wang1, Yan Zhang1,2, Peixin Zhang1
1School of Resource, Environmental and Chemical Engineering, Nanchang University, Nanchang, Jiangxi 330031, PR China.
Journal of the American Chemical Society
|May 15, 2020
まとめ
新しい銅基金属有機フレーム (MOF) は,エチレンから微量アセチレンを効果的に除去します. この吸着剤は高い選択性と容量を示し,効率的なガス分離のための既存の基準を上回る.
科学分野:
- 材料科学
- 化学工学
- 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,ガス分離に不可欠です.
- エチレンから微量アセチレンを効率的に除去することは,産業プロセスにおいて不可欠です.
- 既存のMOFは,アセチレン/エチレン分離の選択性と能力に制限があります.
研究 の 目的:
- エチレンから微量アセチレンを吸収的に除去するための柔軟で堅固なMOFを開発する.
- 選択的なアセチレン吸収のための孔構造と結合部位を強化します.
- 銅類のMOFの性能を,その亜鉛原型と比較して調査する.
主な方法:
- MOFの設計のアイソレティキュラー原理
- 孔の寸法を変更するために亜鉛を銅で代用する.
- アドソープションの検証のためのガスイソテルムと単結晶構造分析.
- IASTの選択性計算と画期的な実験
主要な成果:
- 銅類のMOFは毛穴の膨張 (3.6 × 4.3 × 4.2 Å3) を表している.
- C2H2/C2H4に対する有意なアセチレン吸収 (4.57 mmol g−1) と高い選択性 (二度以上の大きさ) を達成した.
- アセチレン/エチレン分離のためのベンチマークMOFと比較して優れた性能を示した.
- 高いエチレン生産性 (14.9 mmol g−1)
結論:
- 柔軟で堅固な銅ベースのMOFは,エチレンからアセチレンを吸収的に除去するのに非常に効率的です.
- 選択的なアセチレン吸収の鍵となるのは,ポールのサイズと結合部位の最適化です.
- このMOFは,産業用ガス浄化アプリケーションのための有望なソリューションです.
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