エチレンのポリメリゼーションのためのクロム触媒は,フィリップス触媒の均質なモデルとして使用されます

Leonard A MacAdams¹, Gerald P Buffone, Christopher D Incarvito

¹Center for Catalytic Science and Technology, Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, USA.

Journal of the American Chemical Society

|January 27, 2005

まとめ

新型クロム触媒は,エチレンとコポリマーエチレンをアルファ-オレフィンで効果的にポリマー化します. この均質な触媒は,フィリップス・オレフィン・ポリメリゼーション触媒のモデルとなる.

科学分野:

有機金属化学有機金属化学
ポリマーサイエンスの科学

背景:

フィリップス触媒は,産業用オレフィンポリメリゼーションの礎石である.
そのような触媒のメカニズムを理解することは,改良されたポリメリゼーションプロセスの開発に不可欠です.

研究の目的:

大容量なナナックリンガンドを持つカチオン性クロミウム ((III)) アルキル複合体を合成し,特徴づけること.
エチレンポリメリゼーションおよびコポリメリゼーションにおけるこの複合体の触媒活性を調べる.

主な方法:

クロミウム複合体の構造的特徴は,光譜および結晶学的技術を用いて記述した.
様々な条件下でアルファオレフィンによるエチレンポリメリゼーションおよびコポリメリゼーションの触媒試験.

主要な成果:

ナナック・リガンドを併用したカチオンクロム ((III) アルキル複合体は,成功して合成され,構造的に特徴づけられました.
触媒は,エチレンホモポリメリゼーションおよびアルファオレフィンとの共ポリメリゼーションにおいて高い活性を示した.
均質な触媒は,異質なフィリップス触媒の構造的・機能的モデルとして機能する.

結論:

明確に定義された均質なクロム触媒は,異質なフィリップス触媒の振る舞いを効果的に真似することができます.
この研究は,クロム複合体によって触媒化されたオレフィンポリメリゼーションのメカニズムについての洞察を提供します.

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