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...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Molecules (Basel, Switzerland) Switzerland), 2024-07, Vol.29 (14)
Hauptverfasser: Shen, Zhenghua, Xing, Xiangdong, She, Yuan, Meng, Hao, Niu, Wenkang, Ren, Shan
Format: Artikel
Sprache:eng
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
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 (
ISSN:1420-3049