The insertion of copper into the gold lattice forming gold–copper (AuCu) nanoalloys enhances the gold catalytic performance in reactions such as CO oxidation. Here, we compared the catalytic performance of 6 nm AuCu nanoparticles (NPs) supported on SiO₂ (AuCu_SiO₂), a nonreducible oxide, and CeO₂ (AuCu_CeO₂), a reducible one, under preferential oxidation of CO (CO-PROX). Under reaction conditions, the support nature impacted on the stabilization of different species on the catalyst surface. The AuCu_CeO₂ was both more active and more stable, which was associated with the ability of CeO₂ to stabilize the AuCu alloy phase under reaction conditions.

中文翻译：

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负载的AuCu合金纳米粒子用于CO的优先氧化（CO-PROX）

将铜插入形成金-铜（AuCu）纳米合金的金晶格中可增强诸如CO氧化等反应中的金催化性能。在这里，我们比较了在优先氧化CO（CO-PROX）的情况下，负载在SiO ₂（AuCu_SiO ₂）和不可还原的CeO ₂（AuCu_CeO ₂）上的6 nm AuCu纳米颗粒（NPs）的催化性能。。在反应条件下，载体性质影响催化剂表面上不同物质的稳定化。AuCu_CeO ₂既活泼又稳定，这与CeO ₂在反应条件下稳定AuCu合金相的能力有关。