アルカリおよびアルカリ土水素駆動のN2活性化およびMn窒素触媒に対する変換
Fei Chang1,2, Yeqin Guan1,2, Xinghua Chang3
1Dalian National Laboratory for Clean Energy , Dalian Institute of Chemical Physics, Chinese Academy of Sciences , Dalian 116023 , P. R. China.
Journal of the American Chemical Society
|October 24, 2018
まとめ
アルカリとアルカリ土金属水素は,マンガネス窒素を大幅に増加させる
科学分野:
- カタリシス
- 材料科学
- 化学工学
背景:
- 初期の3D移行金属は,反応物質との強い親和性のために,典型的には悪い触媒である.
- マンガネス・ニトリドは,典型的な条件下でアンモニア合成の活動が軽微である.
研究 の 目的:
- アルカリとアルカリ土金属水素 (AHs) のアンモニア合成のためのマンガネス・ニトリドに対する触媒促進効果を調査する.
- 触媒の活性化に伴うメカニズムを理解する
主な方法:
- 各種AHによって促進されたマンガネス窒素の実験的合成と特徴付け.
- 様々な条件下でアンモニア合成反応の試験.
- AHsの役割を明らかにするためにインシトゥのメカニズム研究.
主要な成果:
- AHsは,BaH2 > LiH > KH > CaH2 > NaHのプロモーション順序で,マンガン酸ナトリドの活動を増加させる.
- AHsは,マンガンニトリドからNの除去を促進し,N2の活性化とアンモニアの生産を強化します.
- Mn-LiHシステムの活性相と運動は反応条件に非常に敏感である.
結論:
- AHsは,特に負の電荷を持つ水素は,マンガンニトリド触媒の効果的な促進剤です.
- この研究は,アンモニア合成および他の化学プロセスの早期移行金属触媒の設計のための戦略を提案しています.
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