Metal organic framework Cu/MIL-53(Ce)-mediated synthesis of highly active and stable CO oxidation catalysts

• Published in: Inorganic chemistry communications Vol. 79; pp. 74 - 77
• Main Authors: Tan, Hai-Yan, Zhou, Yin, Yan, Yun-Fan, Wu, De-Yong, Hu, Wei-Bing, Shi, Xin-Yu
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.05.2017
• Subjects: Calcination; CO catalytic oxidation; Cu/MIL-53(Ce); CuO@CeO2 catalyst; Metal-organic framework; Cu/MIL-53(Ce); Calcination; Metal-organic framework; CO catalytic oxidation; CuO@CeO2 catalyst
• ISSN: 1387-7003; 1879-0259
• DOI: 10.1016/j.inoche.2017.03.023

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. The highly dispersed CuO@CeO2 nanoparticles, which resulted from the CuO uniformly supported on the three dimension porous structure of MIL-53(Ce), give rise to a superior catalytic activity and stability for CO oxidation. [Display omitted] •The high activity and stability catalyst of CuO@CeO2 has been synthesized by calcined Cu/MIL-53(Ce) nanoparticles.•CuO@CeO2 catalyst has been demonstrated to be catalyst for CO oxidation, the catalytic mechanism of CO oxidation on CuO@CeO2 has been presented.•Cu/MIL-53(Ce) has been first used as a precursor material for CuO@CeO2 catalyst.