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Hydrolysis01:15

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Pretreatment of Lignocellulosic Biomass with Low-cost Ionic Liquids
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フォーマルデヒドの安定化により,バイオマス脱ポリマー化中にリンニンモノメールの生成が容易になる.

Li Shuai1, Masoud Talebi Amiri1, Ydna M Questell-Santiago1

  • 1Laboratory of Sustainable and Catalytic Processing, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland.

Science (New York, N.Y.)
|November 16, 2016
PubMed
まとめ
この要約は機械生成です。

バイオマスの前処理中にホルマルデヒドを加えると,溶解性のリグニン分子が生成され,高収量で有価なモノマーに変換されます. この突破は,リグニンの凝縮を防ぐことで,バイオ精製所の効率と収益性を大幅に高めます.

さらに関連する動画

Extraction of Lignin with High β-O-4 Content by Mild Ethanol Extraction and Its Effect on the Depolymerization Yield
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科学分野:

  • バイオマス変換
  • 緑の化学
  • キャタリシス

背景:

  • 効率的なリグニン分解法の開発は,バイオ精製所の生産性にとって極めて重要です.
  • 原生リグニンの炭素-炭素結合と抽出中の凝縮は,高収量モノマー生産を阻害する.

研究 の 目的:

  • リグニンの溶解性とその後の脱ポリメリゼーションを改善するために,バイオマスの前処理中にフォーマルデヒドの使用を調査する.
  • リグニンから高量のグアアシルとシリンギルモノマーを得るために.

主な方法:

  • 溶性リンニン中間物質を形成するために,ホルムアルデヒドでバイオマスを前処理する.
  • 溶性リンニン分子の水素分解により,アロマティックモノマーが生成される.
  • セルロース,半セルロース,リグニンの分離分解

主要な成果:

  • formaldehyde を加えることで,理論的収量に近い (47 モル % のビック, 78 モル % のポップル) に変換可能な溶解性リグニン分子を生成した.
  • フォーマルデヒドを使わない方法と比較して 収穫量は3~7倍でした
  • フォーマルデヒドは1,3-ダイオキサン構造を形成することで,リグニンの凝縮を防ぐ.
  • セルロース,半セルロース,およびリグニンの全体的な単体産量は76-90モル%であった.

結論:

  • フォーマルデヒドによるバイオマスの前処理は,高収量リグニンの脱ポリマー化のための非常に効果的な戦略です.
  • この方法は,リグニンの反発性を克服することによって,バイオ精製の効率を大幅に改善します.
  • バイオマス成分を別々に処理することで,モノメアの総回収を最大限にします.