CO2の水素化のための金属有機フレームワークにおける移行金属触媒の穴開封
Zhehui Li1, Thomas M Rayder1, Lianshun Luo2
1Department of Chemistry , Boston College , Chestnut Hill , Massachusetts 02467 , United States.
Journal of the American Chemical Society
|June 19, 2018
まとめ
研究者は,新しい開口方法を使用して,金属有機フレームワーク (MOF) にルテニウム触媒をカプセル化しました. このMOFで封じ込められた触媒はCO2を効率的に形成し,リサイクル可能で,同質な触媒の安定した代替品です.
科学分野:
- 材料科学
- カタリシス
- 化学について
背景:
- メタル・オーガニック・フレームワーク (MOF) は,宿主-ゲストの化学反応のための調整可能な多孔構造を提供します.
- ルテニウム複合体は活性な触媒であるが,同質的触媒では不安定で,再利用性が悪いことが多い.
研究 の 目的:
- MOF内のルテニウム複合体をカプセル化する新しい方法を開発する.
- CO2の水素化のためのMOF封入ルテニウム触媒の触媒性能と安定性を評価する.
主な方法:
- ジルコニウム基のMOF UiO-66で,開いた開口を作り出すための離散型リンクヤー交換.
- UiO-66の枠内でルテニウム複合体 (2,6-bis((di- tert- butyl-phosphino) メチル) ピリジン) Ru (((CO) HClを封入する.
- [Ru]@UiO-66の材料の触媒活性と再利用性をテストし,CO2を水素化して形成する.
主要な成果:
- カプセル化されたルテニウム複合体[Ru]@UiO-66は,CO2の水素化に高い活性を示した.
- [Ru]@UiO-66の触媒は,5回リサイクルに成功し,活動性が著しく低下しなかった.
- MOFで封じ込められた触媒は安定性が向上し,二分子分解の証拠はなく,同質な対比と比較して触媒中毒に対する感受性が低下しました.
結論:
- MOFの開口プロセスは,堅固な宿主-ゲスト触媒材料を合成するための効果的な戦略を提供します.
- MOF封入は,CO2変換のためのルテニウム触媒の安定性と再利用性を大幅に改善します.
- この研究は,高度な化学触媒のMOFベースの材料の可能性を強調しています.
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