ガス分離のための超薄で高負荷の混合マトリックス膜の固体溶媒処理
Guining Chen1, Cailing Chen2, Yanan Guo1
1State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211800, China.
Science (New York, N.Y.)
|September 21, 2023
まとめ
研究者らは新しい固体溶媒法を使って 超薄混合マトリックス膜 (MMM) を開発しました これらの高度なMMMは,高濃度の充填物でも優れたガス分離性能を達成します.
科学分野:
- 材料科学
- 化学工学
- ナノテクノロジー
背景:
- 混合マトリックス膜 (MMM) は,ポリマーとフィラーを組み合わせることで分子分離の可能性を提供します.
- 課題は,インターフェイスの互換性を制御し,特に高い充填量で超薄な選択層を達成することです.
研究 の 目的:
- 超薄型MMMを製造するための新しい加工戦略を開発する.
- MMMのガス分離性能を向上させるため
主な方法:
- ポリマーを金属塩の溶媒として使用した固体溶媒処理戦略が採用された.
- これは金属塩を固定し,金属有機フレームワーク (MOF) に変換することを制御する超薄の前駆層を形成しました.
- この方法は,ポリマーマトリックス内のMOF粘着を促進しました.
主要な成果:
- 100ナノメートル未満の厚さで超薄なMMMを製造し,充填料の負荷は80体積%までです.
- 結果として生じた膜は,ガスをシートする性能を大幅に向上させました.
- 最先端の膜よりも1〜2度高い水素の浸透性および/または二酸化炭素の選択性を達成した.
結論:
- 固体溶媒加工戦略は,高性能の超薄MMMを作成するのに有効です.
- このアプローチは,MMMのインターフェイス互換性と処理の制限を克服します.
- 開発されたMMMは,高度なガス分離アプリケーションのための例外的な可能性を示しています.
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