イソレテキュラー超微孔金属有機フレームワーク内のエタン/エチレン分離の強化
Rui-Biao Lin1, Hui Wu2, Libo Li1
1Department of Chemistry , University of Texas at San Antonio , One UTSA Circle , San Antonio , Texas 78249-0698 , United States.
Journal of the American Chemical Society
|September 15, 2018
まとめ
エチレンとエタンの分離を 劇的に強化した ポーズ構造を備えた 新しい金属有機フレームワーク (MOF) を開発しました 石油化学産業で高純度エチレンを生産するための より効率的な方法を提供する.
科学分野:
- 材料科学
- 化学工学
- 分離科学
背景:
- エタン (C2H6) とエチレン (C2H4) の分離は石油化学産業にとって極めて重要ですが,エネルギー密集的です.
- 浸透性物質を使用する現在の吸着分離方法では,効率的なC2H6/C2H4分離には十分な選択性が欠けている.
研究 の 目的:
- 効率的なエタン/エチレン分離のための高度に選択的な吸着剤を開発する.
- C2H4よりもC2H6の選択性を強化する孔構造と表面特性の役割を調査する.
主な方法:
- 制御された毛穴サイズと弱い極面を持つ2つのイソレティキュラー超微孔金属有機フレームワーク (MOF) の合成.
- ニュートロン粉の difraktion,ガス吸収の isotherms,および結晶学的分析を使用して特徴付け.
- 分離性能の評価は,分子モデリングと画期的な実験によって行われます.
主要な成果:
- 小孔のMOFアナログは,C2H6/C2H4の吸収比が237% (60. 0/25. 3cm3cm3) であることを示し,選択性が大幅に向上した.
- ニュートロン difraktionは,MOFの自己適応的吸収行動を明らかにし,C2H6との最適なヴァン・デル・ワールスの接触を可能にしました.
- 最適化された孔構造と表面親和性は,C2H4よりもC2H6を優先的に結合する.
結論:
- 設計された超マイクロポラスMOFは,C2H6/C2H4分離に高度に効率的な吸着剤です.
- この材料はエチレンを効率的に精製するための有望な解決策です.
- この研究は,選択的なガス吸収のためのMOFの孔工学の重要性を強調しています.
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