効率的な高温ブタノール分離のための高度に水に安定したメタカルボランベースの銅金属有機フレームワーク
Lei Gan1, Arunraj Chidambaram2, Pol G Fonquernie1
1Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), E-08193 Bellaterra, Barcelona, Spain.
Journal of the American Chemical Society
|April 28, 2020
まとめ
mCB-MOF-1という新型の水性金属有機構造は,薄くした水溶液からブタノールを効率的に分離します. この材料はZIF-8よりもアルコールへの親和性が高く,バイオ燃料の生産に有望な解決策です.
科学分野:
- 材料科学
- 化学工学
- 持続可能なエネルギー
背景:
- バイオ燃料は化石燃料の持続可能な代替品であり,バイオブタノールが注目されています.
- ブタノールを薄くした発酵ブローチ (最大2 wt%) から分離することは大きな生産課題です.
- ゼオライトやMOFのような既存の吸着剤は,水性性や不安定性のために制限があります.
研究 の 目的:
- 水溶液からブタノールを回収するための費用対効果の高い吸着剤を開発する.
- アセトン-ブタノール-エタノール (ABE) 混合物の吸収分離のための新しい水性金属有機フレームワーク (MOF) mCB-MOF-1の可能性を調査する.
主な方法:
- 銅イオンとカルボラン-カルボキシラートリガンドを用いた新しい水性MOF,mCB-MOF-1の合成と特徴付け.
- mCB-MOF-1の様々な溶媒と水溶液における安定性の評価
- 水,エタノール,ブタノール,アセトンに対するmCB-MOF-1とZIF-8を比較するために,蒸気イソサームを用いた吸収試験.
- mCB-MOF-1の分離性能を現実的なABE混合物で333Kでテストする.
主要な成果:
- mCB-MOF-1は有機溶剤,熱水,酸性/塩基性溶液に優れた安定性を示した.
- mCB-MOF-1は水に対するタイプIIイソテルムを示し,ZIF-8よりもアルコールとアセトンに対するより高い親和性を示した.
- ABE混合物分離では,mCB-MOF-1は,ZIF-8と比較して333 Kでより効率的なブタノール回収を示した.
結論:
- 新型水性MOF,mCB-MOF-1は,稀な水溶液からブタノールを効率的に回収するための安定した有望な材料です.
- mCB-MOF-1は,バイオ燃料生産における吸着分離のためにZIF-8のような既存の材料よりも利点があります.
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