メタル・オーガニック・フレームワークにおける同質な触媒の異質化,カチオン交換による異質化
Douglas T Genna1, Antek G Wong-Foy, Adam J Matzger
1Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, USA.
Journal of the American Chemical Society
|July 11, 2013
まとめ
この研究は,金属有機フレームワーク (MOF) 内の移行金属触媒をカチオン交換を使用して固定するための新しい方法を示しています. その結果,MOFでサポートされた触媒は,水素化反応の有望な活性と再利用性を示しています.
科学分野:
- マテリアルサイエンス 材料科学
- カタリシス カタリシス カタリシス
- ナノテクノロジー ナノテクノロジー
背景:
- シングルサイトの移行金属触媒は,高い活性と選択性を提供します.
- 均質な触媒の異質化は,産業用アプリケーションにおいて極めて重要です.
- メタル・オーガニック・フレームワーク (MOF) は,触媒のサポートのために調節可能な多孔構造を提供します.
研究 の 目的:
- MOFにおける単一サイト移行金属触媒の異質化のための一般的な方法を開発する.
- MOFでサポートされる新しい移行金属複合体を合成し,特徴づけること.
- サポートされている触媒の触媒性能と再利用性を評価する.
主な方法:
- カチオン交換は,カチオン型移行金属複合体をZJU-28 MOFに組み込むために使用されました.
- 特徴付けのテクニックには,光学顕微鏡,ICP-OES,および粉末X線 difraktionが含まれていました.
- 1オクテンの触媒性水素化は,MOFがサポートするロジウム複合体を使用して行われました.
主要な成果:
- 様々な移行金属複合体 (Pd,Fe,Ir,Rh,Ru) がZJU-28に成功裏に組み込まれました.
- MOFでサポートされた[Rh(dppe) ((COD) ]BF4触媒は,1オクテンをnオクテンに効果的に水素化しました.
- サポートされた触媒は,同質の同位体と同等の活性を示し,少なくとも4回リサイクルされました.
結論:
- カチオン交換は,MOFの移行金属触媒をサポートするための実行可能で一般的な戦略です.
- MOFでサポートされる触媒は,再利用性と安定性という点で利点があります.
- このアプローチは,高度な異質な触媒の設計に新しい道を開きます.
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