連続リガンド除去とMOFの設置による金属センターの赤道位置の露出
Shuai Yuan1, Peng Zhang1, Liangliang Zhang2
1Department of Chemistry , Texas A&M University , College Station , Texas 77843-3255 , United States.
Journal of the American Chemical Society
|August 10, 2018
まとめ
研究者は,トランスコーディネートされた金属サイトを持つ新しい金属有機フレームワーク (MOF) を作成しました. これらのサイトは,エチレン二重化のための強化された触媒活性を示し,MOFのアプリケーションのための新しい可能性を提供します.
科学分野:
- 材料科学
- 協調化学
- カタリシス
背景:
- メタル・オーガニック・フレームワーク (MOF) は,調整アーキテクチャの設計のための多機能プラットフォームです.
- MOF内の金属センターの調整とアクセシビリティを制御することは,ターゲットアプリケーションにとって極めて重要です.
研究 の 目的:
- MOF内のアクセシブルな赤道位置を持つトランスコーディネートメタルセンターの組み込みを実証する.
- これらのMOFサイトの触媒性能を調査する.
主な方法:
- ZrベースのMOF (PCN-160) を基板として合成する.
- ピリジンカルボキシラートリンカーを導入するために,合成後のリンカー変更.
- 様々な移行金属イオン (Mn2+,Fe2+,Co2+,Ni2+,Cu2+,Pd2+) をトランス結合部位に配合する.
- エチレン二酸化における触媒活性の評価
主要な成果:
- MOFのマトリックスに トランスコーディネートメタルセンターを組み込みました
- これらの部位が様々な金属を結合する能力を示した.
- トランスコーディネートされたNi2+部位は,シスケラートされた触媒と比較して,エチレン二重化における優れた触媒活性を示した.
- 金属の場所の赤道的なアクセシビリティは,触媒の基板へのアクセスを容易にした.
結論:
- トランスコーディネートメタルセンターは,アクセシブルな赤道位置でMOFにうまく統合できます.
- このMOFの設計は,エチレン二酸化によって示される触媒性能を高めます.
- この戦略は,高度な機能的なMOFを開発するための新しい経路を提供します.
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