グリーン・ケミストリー. バイオプラスチックの生産のための形状選択ゼオライト触媒
Michiel Dusselier1, Pieter Van Wouwe2, Annelies Dewaele2
1Center for Surface Chemistry and Catalysis, KU Leuven, Kasteelpark Arenberg 23, B-3001 Heverlee, Belgium. michiel.dusselier@gmail.com bert.sels@biw.kuleuven.be.
Science (New York, N.Y.)
|July 4, 2015
まとめ
ゼオライトベースの新しいプロセスは,乳酸を直接,生物分解性ポリマーの重要な成分である乳酸に効率的に変換します. この方法は,収穫率を向上させ,廃棄物を減らすことで現在の生産を上回り,ポリラクティック酸の製造によりグリーンな代替品を提供します.
科学分野:
- ポリマー化学のポリマー化学について
- グリーン・ケミストリー (Green Chemistry)
- カタリシス カタリシス カタリシス
背景:
- ポリ乳酸 (PLA) は,石油化学プラスチックに代わる再生可能なポリマーである.
- 現在,乳酸からPLAを生産することは非効率で,エネルギーが集約され,時間がかかります.
- 乳酸のサイクルダイマーであるラクチドは,PLA合成の重要な中間物質である.
研究 の 目的:
- 乳酸を乳チドに変換するための直接的で効率的な触媒プロセスを開発する.
- ラクチドの生産のための既存の複数段階の方法を改善する.
- 生物分解性ポリマーの製造における持続可能性を高めるために.
主な方法:
- 乳酸を乳チドに直接ゼオライトベースの触媒変換を用いた.
- ゼオライトの形状選択特性を活用して,製品形成を制御しました.
- 複数の反応サイクルにおける触媒の回復と再活性化を研究した.
主要な成果:
- 直接的,単一ステップのプロセスを通して,乳酸塩の記録的な収量を達成しました.
- ゼオライト触媒は,ラセミゼーションと副産物の形成を最小限に抑え,従来の方法を上回る.
- 少なくとも6回の反応サイクルで証明された触媒の安定性と再利用性.
- 溶媒と副産物の効率的なリサイクルの促進.
結論:
- 乳酸を乳酸に直接ゼオライトで触媒化して変換することは,非常に生産的で効率的な方法です.
- このプロセスは,生物分解性ポリマー生産のための持続可能で経済的に有効な代替案を提供します.
- 形状選択的なゼオライト触媒は,高収量,低廃棄物のラクチド合成に不可欠です.
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