ガス分離のためのポリメリックとゼオライト膜の利点を真に組み合わせる
Xiaoyu Tan1, Sven Robijns2, Raymond Thür1
1Centre for Membrane Separations, Adsorption, Catalysis and Spectroscopy for Sustainable Solutions (cMACS), KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium.
Science (New York, N.Y.)
|December 15, 2022
まとめ
この研究では,効率的なガス分離のためにNa-SSZ-39ゼオライトとポリミドを用いた高度な混合マトリックス膜 (MMM) が開発されました. 新しい膜の設計は,二酸化炭素 (CO2) の分離性能を大幅に向上させ,既存の技術を上回ります.
科学分野:
- 材料科学
- 化学工学
- 分離科学
背景:
- 混合マトリックス膜 (MMM) は,高効率な分離のために,ポリマーの処理性と充填剤の性能を組み合わせています.
- ポリマー内の充填剤の最適な統合を達成することは依然として大きな課題です.
- 既存のMMMは,選択性,浸透性,長期的な安定性をバランスにすることがしばしば困難です.
研究 の 目的:
- エネルギー効率の高いガス分離のための高性能MMMを開発する.
- 現在のMMMの限界を克服し,特定のゼオライト特性をポリマーマトリックスと統合する.
- 頑丈で耐久性のある膜を作り 優れたガス分離能力を持つ
主な方法:
- 商用ポリミドマトリックスにNa-SSZ-39の超高負荷を組み込む.
- ゼオライトとMMMの合成を慎重に設計し,ガス浸透経路を作成します.
- 柔軟で耐老化性のある膜の製造 (1年以上テストされた)
主要な成果:
- 開発されたMMMは,約423のCO2-CH4混合ガスの選択性を達成しました.
- 膜は,約8300バレルの高いCO2の透過性を示した.
- 性能は既存のポリマーベースの膜とゼオライトのみの膜を上回った.
結論:
- 新型MMM設計では高性能ゼオライトのフィーラーをポリマーマトリックスに成功裏に統合しています.
- 膜は CO2/CH4の分離効率と透過性を発揮しています.
- この進歩は,エネルギー効率の高いガス分離技術のための有望な経路を提供します.
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