Unveiling the Promoting Mechanism of H 2 Activation on CuFeO x Catalyst for Low-Temperature CO Oxidation
The effect of H activation on the performance of CuFeO catalyst for low-temperature CO oxidation was investigated. The characterizations of XRD, XPS, H -TPR, O -TPD, and in situ DRIFTS were employed to establish the relationship between physicochemical property and catalytic activity. The results sh...
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Veröffentlicht in: | Molecules (Basel, Switzerland) Switzerland), 2024-07, Vol.29 (14) |
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Hauptverfasser: | , , , , , |
Format: | Artikel |
Sprache: | eng |
Online-Zugang: | Volltext |
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Zusammenfassung: | The effect of H
activation on the performance of CuFeO
catalyst for low-temperature CO oxidation was investigated. The characterizations of XRD, XPS, H
-TPR, O
-TPD, and in situ DRIFTS were employed to establish the relationship between physicochemical property and catalytic activity. The results showed that the CuFeO
catalyst activated with H
at 100 °C displayed higher performance, which achieved 99.6% CO conversion at 175 °C. In addition, the H
activation promoted the generation of Fe
species, and more oxygen vacancy could be formation with higher concentration of O
species, which improved the migration rate of oxygen species in the reaction process. Furthermore, the reducibility of the catalyst was enhanced significantly, which increased the low-temperature activity. Moreover, the in situ DRIFTS experiments revealed that the reaction pathway of CO oxidation followed MvK mechanism at low temperature ( |
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ISSN: | 1420-3049 |