Following the need for an innovative catalyst and material design in catalysis, we provide a comparative approach using pure and Pd-doped LaCu_xMn_1–xO₃ (x = 0.3 and 0.5) perovskite catalysts to elucidate the beneficial role of the Cu/perovskite and the promoting effect of Cu_yPd_x/perovskite interfaces developing in situ under model NO + CO reaction conditions. The observed bifunctional synergism in terms of activity and N₂ selectivity is essentially attributed to an oxygen-deficient perovskite interface, which provides efficient NO activation sites in contact with in situ exsolved surface-bound monometallic Cu and bimetallic CuPd nanoparticles. The latter promotes the decomposition of the intermediate N₂O at low temperatures, enhancing the selectivity toward N₂. We show that the intelligent Cu/perovskite interfacial design is the prerequisite to effectively replace noble metals by catalytically equally potent metal–mixed-oxide interfaces. We have provided the proof of principle for the NO + CO test reaction but anticipate the extension to a universal concept applicable to similar materials and reactions.

中文翻译：

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谁做这份工作？铜如何通过形成铜-混合氧化物界面来替代可持续催化中的贵金属

由于需要创新的催化剂和催化材料设计，我们提供了一种使用纯和 Pd 掺杂的 LaCu _x Mn _{1– x} O ₃ ( x = 0.3 和 0.5) 钙钛矿催化剂的比较方法，以阐明 Cu/在模型 NO + CO 反应条件下，钙钛矿和 Cu _y Pd _x /钙钛矿界面原位发展的促进作用。_{在活性和 N 2}选择性方面观察到的双功能协同作用主要归因于缺氧钙钛矿界面，该界面提供了与原位接触的有效 NO 活化位点溶解的表面结合的单金属Cu和双金属CuPd纳米颗粒。后者促进了中间体N ₂ O 在低温下的分解，提高了对N ₂的选择性。我们表明，智能铜/钙钛矿界面设计是通过催化同样有效的金属-混合氧化物界面有效替代贵金属的先决条件。我们已经提供了 NO + CO 测试反应的原理证明，但预计将扩展到适用于类似材料和反应的通用概念。