化学的に安定したメソポラスNi ((II) -ピラゾラート金属-有機枠の運動制御された網状組成
Tao He1, Zhehao Huang2, Shuai Yuan3
1Beijing Key Laboratory for Green Catalysis and Separation, Department of Environmental Chemical Engineering, Beijing University of Technology, Beijing 100124, PR China.
Journal of the American Chemical Society
|July 14, 2020
まとめ
化学的に安定したメタル・オーガニック・フレームワーク (MOF) を合成した. 運動的に優れているBUT-33 MOFは,炭素-炭素結合反応において優れた触媒性能を示す.
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) の用途は,化学的安定性が低く,毛穴のサイズが小さいため制限されています.
- 大きなメソポールの強いMOFを開発することは,重要な合成課題です.
研究 の 目的:
- 強化された触媒活性を持つ頑丈でメソポラスなNi (II) -ピラゾラートMOFを合成する.
- MOF合成における運動対熱力学的制御の役割を調査する.
主な方法:
- 形状に一致するピラゾラートリガンドを用いたイソレティキュラー膨張.
- 運動的または熱力学的産物を好むように反応条件を調節することによって制御された合成.
- 単一結晶のX線微分法で構造を決定する.
- 炭素-炭素結合反応における触媒評価
主要な成果:
- 化学的に安定した2つのNi (II) -ピラゾラートMOF,BUT-32 (微孔性,熱力学) とBUT-33 (半孔性,運動性) が成功して合成された.
- BUT-33は,2. 6 nmのメソポール,アクセス可能なNi (II) サイト,および厳しい条件での例外的な安定性 (4 M NaOH, 1 M Grignard) を表しています.
- BUT-33は,BUT-32や他のNi (II) -MOFと比較して,炭素-炭素結合反応における優れた触媒性能を示した.
結論:
- 望ましい性質を持つメソポラスMOFを合成するには,運動制御が不可欠である.
- メソポラスBUT-33MOFは,安定性と活性部位により,異質な触媒作用の有意な可能性を示している.
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