CO2から選択的に甲酸を生成し,電解剤としてMn(bpy) ((CO) 3Br,添加物としてトライエチラミン/イソプロパノールを使用する
Monica R Madsen1, Magnus H Rønne1, Marvin Heuschen1
1Carbon Dioxide Activation Center (CADIAC), Interdisciplinary Nanoscience Center, Department of Chemistry, Aarhus University, Gustav Wieds Vej 14, 8000 Aarhus C, Denmark.
Journal of the American Chemical Society
|November 23, 2021
まとめ
マンガンの触媒とトリエチラミンやイソプロパノールなどの添加物を用いて二酸化炭素 (CO2) をアリ酸 (HCOOH) に効率的に変換する. この方法は,有価な化学物質の生産のための選択性と効率性を最適化します.
科学分野:
- 電気化学
- カタリシス
- 緑の化学
背景:
- 効率的な二酸化炭素 (CO2) を価値ある製品に変換することが急務です.
- 電気触媒による二酸化炭素の削減は 持続可能な経路です
- マンガンの複合物は,CO2削減のための電解剤として有望である.
研究 の 目的:
- CO2をアリ酸 (HCOOH) に還元するための効率的な電気触媒システムを開発する.
- 製品の選択性と反応経路を制御する添加物の役割を調査する.
- 高ファラダイク効率と低超電位性を得るために触媒の性能を最適化します.
主な方法:
- マンガンの触媒,fac-Mn(bpy) ((CO) 3Brを用いた電気化学的なCO2の還元
- 製品の選択性に影響を与えるための添加物 (アミンとアルコール) の体系的な変化
- 反応メカニズムを解明するための密度関数理論 (DFT) の計算.
主要な成果:
- トライエチラミン (Et3N) とイソプロパノール (iPrOH) を添加物として使用することによって,COよりHCOOHの選択的生産.
- 260mVの超電位でHCOOHの59%±1%のファラダイク効率を達成した.
- 2M Et3NとiPrOHで560mVのオーバーポテンシャルでファラダイク効率を71%±3%まで最大化する.
- HCOOHの選択性の決定におけるアミン構造の重要な役割が示された.
結論:
- CO2 を HCOOH に変換するための単純な電気化学的方法が示されています.
- マンガンの触媒と特定の添加物の組み合わせは,高い選択性と効率性を可能にします.
- CO2利用のための高度な電気触媒システムの設計には,添加効果を理解することが重要です.
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