ポリエチレン廃棄物をエチレンで分解してプロピレンを形成する
Richard J Conk1,2, Steven Hanna1,2, Jake X Shi1,2
1Department of Chemistry, University of California, Berkeley, Berkeley, CA 94720, USA.
Science (New York, N.Y.)
|September 29, 2022
まとめ
この研究は,軽度の触媒処理を用いて廃棄ポリエチレンプラスチックを価値あるプロピレンモノマーに変換します. この革新的な化学リサイクル方法は,プラスチック廃棄物の管理と原料の生産に持続可能な経路を提供します.
科学分野:
- ポリマー化学
- カタリシス
- 持続可能な化学
背景:
- ポリオレフィンはプラスチック廃棄物の最大の部分を占めています.
- 安定した炭素結合により,ポリオレフィンをモノマーに分解することは困難です.
- プラスチックの廃棄物を価値ある原料に効率的に変換することは,持続可能性にとって極めて重要です.
研究 の 目的:
- ポリエチレンをプロピレンに変換するための触媒方法の開発.
- ポリオレフィン分解のための選択的化学変換を調査する.
- プラスチック廃棄物の再生のための持続可能な経路を確立する.
主な方法:
- 高密度ポリエチレンの部分脱水処理は,イリジウムピンカーまたはプラチナ/亜鉛触媒を用いて行われます.
- Hoveyda-Grubbsとパラジウムベースのイソメリゼーション触媒を用いた脱飽和ポリマーのタンデムイソメリゼーションエテナリシス.
- プロピレン分とオレフィン分を測定するための反応産物の分析
主要な成果:
- デヒドロゲン化により,内部オレフィンが最大3.2%の不飽和ポリエチレンが得られる.
- 不飽和ポリマーをプロピレンに選択的に分解することで,80%を超える収量が得られる.
- ポリオレフィン分解には軽度の触媒条件が用いられました.
結論:
- 軽度の触媒は,安定したポリオレフィンを効果的に分解することができる.
- このプロセスは プラスチックの廃棄物から 価値ある炭素原料を生産する 有望な方法です
- 開発された触媒システムは,ポリオレフィンの化学的リサイクルの可能性を示しています.
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