Abstract
The highly dispersed CuO@CeO2 catalysts were produced from Cu/MIL-53(Ce) through encapsulated copper in a matrix of metal organic framework MIL-53(Ce), serving as a catalyst for CO oxidation. Comparison on the catalytic performance between the CuO@CeO2 and the (CuO or MIL-53(Ce)) catalytic material has been conducted to understand the catalytic behavior of the catalysts. The CuO@CeO2 catalysts were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), N2 adsorption-desorption, and the hydrogen temperature-programmed reduction (H2-TPR). The analyses indicated that the unique CuO@CeO2 spatial confinement in the obtained solids minimize catalyst deactivation, resulting in high active and stable operation. Indeed, the heterogeneous catalytic composite materials CuO@CeO2 catalyst exhibited excellent activity in CO oxidation test, with 100% conversion at 79–95°C and the catalytic activity were stable after reaction 300h.
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