AI Article Synopsis
- Supported metal catalysts improve chemical reactions by creating efficient metal-oxide interfaces.
- The study shows that a Cu@ZnO structure can be formed in situ by migrating Zn from ZnO to Cu nanoparticles at 450°C in a CO hydrogenation environment.
- This method enhances the catalytic activity for converting CO to methanol, revealing a novel approach to optimize oxide-metal interactions through high-temperature conditions.
Article Abstract
Supported metal catalysts are widely used for chemical conversion, in which construction of high density metal-oxide or oxide-metal interface is an important means to improve their reaction performance. Here, Cu@ZnO encapsulation structure has been in situ constructed through gas-phase migration of Zn species from ZnO particles onto surface of Cu nanoparticles under CO hydrogenation atmosphere at 450 °C. The gas-phase deposition of Zn species onto the Cu surface and growth of ZnO overlayer is self-limited under the high temperature and redox gas (CO /H ) conditions. Accordingly, high density ZnO -Cu interface sites can be effectively tailored to have an enhanced activity in CO hydrogenation to methanol. This work reveals a new route for the construction of active oxide-metal interface and classic strong metal-support interaction state through gas-phase migration of support species induced by high temperature redox reaction atmosphere.
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| http://dx.doi.org/10.1002/anie.202316888 | DOI Listing |
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