ヘテロメタリック CeIV/ VV 調整可能な触媒反応性を持つオクソクラスター
Xingjie Wang1, Kieran Brunson2, Haomiao Xie1
1International Institute for Nanotechnology and Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States.
Journal of the American Chemical Society
|December 7, 2021
まとめ
調節可能なリガンドを持つ新しいCe12V6オクソクラスターは,強化された酸化還元触媒を示す. 有機リガンドは溶解性と毛穴性を改善し,選択的硫化酸化などのアプリケーションの反応性を高めます.
科学分野:
- 無機化学
- 材料科学
- カタリシス
背景:
- ヘテロメタリックオクソクラスターは,酸化還元触媒に相乗効果がある.
- セリウム (CeIV) /金属 (M) クラスターは未熟であるが有望な触媒材料である.
研究 の 目的:
- 新しいCe12V6オクソクラスタを様々なキャピングリガンドで設計・合成する.
- これらのクラスターの構造的,電子的,触媒的性質を調査する.
主な方法:
- 単結晶X線 difraktion (SCXRD) で構造を明らかにする.
- 特徴づけのためのスペクトル検査技術 (IR,UV-vis,ESI-MS,1H NMR,51V NMR)
- 溶液の完全性を確認するために小角X線散射 (SAXS)
- 2-クロロエチル硫化物 (CEES) の選択的酸化による触媒試験
主要な成果:
- 硫酸,トロウエネスルフォニック酸 (OTs),およびニトロベンツェネスルフォニック酸 (NBSA) のリガンドで3つのCe12V6オクソクラスタを成功して合成した.
- 構造分析により, [Ce12(VO) 6O24] 18+ キューバンの核が確認された.
- リガンド機能化により溶解性が向上し,OTとNBSAの変種で多孔性が生じました.
- 触媒試験では,触媒部位のアクセシビリティが向上した.
結論:
- 有機リガンドの導入は,無機硫酸塩で覆われたクラスターの性能を高めるための有効な戦略です.
- 調節可能な溶解性および多孔性は,触媒活動の最適化における重要な要因である.
- これらのCe12V6クラスターは 効率的な酸化還元触媒としての可能性を 示しています
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