Investigation on synergistic effect of CuO and Cu–O–Ce on efficient oxidation of ethyl acetate over CuO/CeO2 catalysts

The high activity of ethyl acetate (EA) combustion is studied over the CuO/CeO 2 catalysts which are prepared by the ball milling method, and the relationships between catalytic activity and active sites of CuO and Cu–O–Ce structure are investigated. The finely dispersed CuO particles (around 1.0 nm...

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Bibliographic Details
Published in:Research on chemical intermediates 2024-07, Vol.50 (7), p.3351-3368
Main Authors: Ye, Yuchuan, Wang, Qing, Chen, Han, Chen, Liqiao, Wang, Luhui, Mo, Liuye, Tan, Li, Wei, Qinhong, Xu, Jing
Format: Article
Language:English
Subjects:
Ball milling
Catalysis
Catalysts
Catalytic activity
Catalytic converters
Cerium oxides
Chemistry
Chemistry and Materials Science
Copper oxides
Ethyl acetate
Inorganic Chemistry
Oxidation
Physical Chemistry
Roasting
Synergistic effect
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Summary:The high activity of ethyl acetate (EA) combustion is studied over the CuO/CeO 2 catalysts which are prepared by the ball milling method, and the relationships between catalytic activity and active sites of CuO and Cu–O–Ce structure are investigated. The finely dispersed CuO particles (around 1.0 nm) and Cu–O–Ce structure are prepared in the CuO/CeO 2 catalysts when 5 wt% Cu loading is acquired with the calcination temperature at 500 °C. Complete conversion of ethyl acetate to CO 2 is achieved at 210 °C. Via controlling calcination temperatures and treatments by alkaline/acid, it is demonstrated that the synergistic effect between highly dispersed CuO and Cu–O–Ce structure results in a better ability of oxygen activation and catalytic activity for the 5-CuO/CeO 2 (500) catalyst. This study provides a feasible strategy for designing an efficient CuO/CeO 2 catalyst and an insight into the structure–activity relationship.
ISSN:0922-6168
1568-5675
DOI:10.1007/s11164-024-05315-4