高度に選択的なCOのための金属有機フレームワークの高対称多核クラスター
Jingjing Jiang1, Zhiyong Lu2, Mingxing Zhang1
1State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , China.
Journal of the American Chemical Society
|September 19, 2018
まとめ
研究者は,優れた二酸化炭素 (CO2) 捕獲のための強化された対称性を持つ新しい金属有機フレームワーク (MOF) を開発しました. このMOFは高いCO2吸収と選択性を示し,ガス浄化に有望である.
科学分野:
- 材料科学
- 化学について
- 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,調節可能な構造を持つ多孔性材料です.
- MOFの対称性を制御することは,ガスの吸収特性を最適化するために不可欠です.
- アイソレティキュラー変換は,基礎のトポロジーを変更せずにMOF構造を変更する経路を提供します.
研究 の 目的:
- 多核クラスタをMOFで対称性を向上させる異型変形で調整する新しい方法を提示する.
- より高い対称性を持つbcu型MOF (NJU-Bai35) を合成する.
- 合成されたMOFのCO2キャプチャと選択性性能を評価する.
主な方法:
- MOFの対称性をアップグレードするアイソレティキュラー変換.
- 新しいbcu型MOFの合成, {[Cu4(μ4-O) Cl2(IN) [4][CuCl2]}∞ (NJU-Bai35)
- CO2の吸収と選択性を評価するためのガス吸収と突破実験.
主要な成果:
- NJU-Bai35の合成に成功し,より高い対称性クラスター [Cu4 ((μ4-O)) Cl2 ((COO)) 4N4] を獲得した.
- シンメトリーアップグレードにより,MOFチャネルが調整され,CO2分子のフィッティングが強化されます.
- NJU-Bai35は高いCO2吸収能力を示した (7.15バー,298Kで7.20%).
- N2 (275. 8),CH4 (11. 6) に対して,CO2に対する高い選択性が見られた.
結論:
- シンメトリーアップグレードイソレティキュラー変換は,MOF設計の効果的な戦略です.
- NJU-Bai35は二酸化炭素の吸収と天然ガスの浄化に大きな可能性を秘めている.
- 強化されたMOF構造は,CO2を他のガスから効率的に分離することを容易にする.
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