CO2/CH4分離のための多変性多結晶金属有機枠膜
Weidong Fan1, Yunpan Ying1, Shing Bo Peh1
1Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585 Singapore.
Journal of the American Chemical Society
|October 5, 2021
まとめ
この研究では,CO2 / CH4の選択性と浸透性が向上した天然ガス分離のための先進的なMIL-160膜を導入します. これらの新しい膜は,従来のシリコアルミノフォスファート-34膜と比較して,水分と炭化水素に対する耐性が向上しています.
科学分野:
- 材料科学
- 化学工学
- 分離技術
背景:
- 膜技術はエネルギー効率の良い天然ガスの分離を提供します.
- シリコアルミノフォスファート-34 (SAPO-34) のような微孔の無機膜は有望ですが,水分と炭化水素吸収に苦しんでいます.
- 汚染物質に耐える頑丈な膜の開発は,産業用天然ガス処理に不可欠です.
研究 の 目的:
- 天然ガスの分離のための新しいMIL-160膜を製造し,特徴づけること.
- 毛穴の大きさとリガンドの機能が膜の性能に及ぼす影響を網膜化学を用いて調べる.
- フッ素機能化されたMIL-160/CAU-10-F膜の性能を評価し,既存のSAPO-34膜と比較する.
主な方法:
- Al2O3基板上の多結晶MIL-160膜のインサイト水熱合成
- フッ素機能化されたMIL-160/CAU-10-F膜の製造.
- CO2/CH4の選択性およびCO2の浸透性の測定を含むガス分離性能試験
- 水蒸気と炭化水素に対する膜耐性の評価
主要な成果:
- 3μmの厚さのMIL-160膜は,有意な分子シート効果を示し,成功裏に製造されました.
- 網状の化学反応により MIL-160膜の孔の大きさと環境を正確に制御することができました.
- フッ素で機能化されたMIL-160/CAU-10-F膜は,MIL-160と比較してCO2 / CH4の選択性が10.7%増加し,CO2の浸透性が31.2%増加した.
- MIL-160とMIL-160/CAU-10-Fの膜は,SAPO-34膜よりも水蒸気と炭化水素に対する優れた耐性を示した.
結論:
- MIL-160膜は,網状化学を介して調整可能な性質を持つ天然ガス分離に有効です.
- フッ素機能化により,CO2 / CH4分離性能とCO2浸透性が向上する.
- これらの新型の防水膜は,汚染物質の存在下での安定性と性能を改善し,水性SAPO-34膜の性能を上回ります.
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