メタル・オーガニック・フレームワークにおけるカチオン交換によるオレフィンポリメリゼーションのための単一サイト異質な触媒

Robert J Comito¹, Keith J Fritzsching², Benjamin J Sundell³

¹Department of Chemistry, Massachusetts Institute of Technology , 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States.

Journal of the American Chemical Society

|July 23, 2016

まとめ

メタル・オーガニック・フレームワーク (MOF) は,高度なポリオレフィン生産を可能にします. MFU-4lの亜鉛イオンを他の金属と交換することで,研究者は精密なポリマー合成と形態制御のための多用途の固体触媒を作成しました.

科学分野:

材料科学
カタリシス
ポリマー化学

背景:

先進的なポリオルフェンは単一部位の異質な触媒に依存しています.
メタル・オーガニック・フレームワーク (MOF) は,触媒の調整可能な分子設計を提供します.
MFU-4lは,工業的な応用の可能性のある高表面積のMOFです.

研究の目的:

MOFベースの触媒を用いた選択的なオレフィンポリメリゼーションのための一般的なプラットフォームを開発する.
オレフィンポリメリゼーションのための金属交換MFU-4lの触媒活性を調査する.
ポリエチレン合成における分子と形態学的制御を証明する.

主な方法:

合成されたMFU-4I金属有機フレーム.
MFU-4Iで反応性金属と亜鉛イオン交換した.
ポリエチレンは様々な分析技術を用いて特徴づけられた.
エチレンとプロピレンの共ポリマー化における触媒性能の評価

主要な成果:

金属交換されたMFU-4l触媒は,低ポリ分散度指数を持つ単一サイトのような反応性を示す.
ポリマーの分子量と形状をよくコントロールできる.
エチレンとプロピレンの成功コポリメリゼーションを証明した.
触媒粒子の周りの均一なポリマーの成長は形態学的制御を提供します.

結論:

金属交換MOFは,選択的なオレフィンポリメリゼーションのための多用途のプラットフォームを提供します.
これらの触媒は産業用触媒に不可欠な分子と形態学的制御を提供します
開発されたMOF触媒は,ポリオレフィン製造における連続フロープロセスに希望を示しています.

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