高熵策略可提高过渡金属钙钛矿氧化物的低温脱硝效率。

IF 4.2 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Chemical Communications Pub Date : 2025-03-18 DOI:10.1039/d4cc06688j

Xuan Zhang , Dequan Jiang , Shenghui Han , Wanli Yi , Jianwen Su , Song Gao , Yonggang Wang , Ruqiang Zou

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引用次数: 0

摘要

为获得低温NH3-SCR反应所需的高熵钙钛矿（HEPs），提出了“高熵排斥”和“元取代”策略。在六种金属（Mn, Fe, Co, Ni, Cr, Al）中，HEP-no-Al表现出最高的催化活性。结果表明，b位元素丰富的价态对提高催化性能起着至关重要的作用。在180℃条件下，用Mo和W取代b位上的Cr，进一步提高了对NO的去除率，达到100%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

High-entropy strategies afford transition metal perovskite oxides with enhanced low-temperature NOx removal efficiency†

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High-entropy strategies afford transition metal perovskite oxides with enhanced low-temperature NOx removal efficiency†

“High-entropy exclusion” and “elementary substitution” strategies are developed to afford high-entropy perovskites (HEPs) for NH₃-SCR reaction at low-temperature. Among the six metals (Mn, Fe, Co, Ni, Cr, Al), HEP-no-Al exhibits the highest catalytic activity. It was found that the rich valence states of the elements at the B-site played a crucial role in enhancing the catalytic performance. Cr at the B-site was substituted with Mo and W, and B-site substitution by Mo further improves the NO removal efficiency to 100% at 180 °C.

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来源期刊

Chemical Communications 化学-化学综合

CiteScore

8.60

自引率

4.10%

发文量

2705

审稿时长

1.4 months

期刊介绍： ChemComm (Chemical Communications) is renowned as the fastest publisher of articles providing information on new avenues of research, drawn from all the world''s major areas of chemical research.