CeO2-CuO bimetal oxides derived from Ce-based MOF and their difference in catalytic activities for CO oxidation

Guo, Zeyi; Song, Lianghao; Xu, Tiantian; Gao, Daowei; Li, Cuncheng; Hu, Xun; Chen, Guozhu

doi:10.1016/j.matchemphys.2019.01.057

Cited by 43 publications

(28 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, incorporation of Ce and further activation of the material resulted in a highly dispersed bimetallic system of strong CeO 2 -CuO interactions that improved CO oxidation when compared to HKUST-1-derived CuO alone. Over the Ce-HKUST-1-derived CeO 2 -CuO, total CO conversion was achieved at 150 • C. Guo et al [41] obtained CeO 2 -CuO bimetallic catalysts derived from Cu supported on Ce-MOF-808 which showed 100% CO conversion above 300 • C, which is a significantly higher temperature than in the case of that reported in this work for HKUST-1-based catalysts. Zhu et al [42] synthesised Ce-UiO-66-derived CuO-CeO 2 catalysts and studied them in preferential CO oxidation (PROX).…”

Section: Catalytic Tests Of Co Oxidationmentioning

confidence: 43%

“…For example, Zamaro et al [25] reported that HKUST-1 itself was not active in CO oxidation but that it was found to be a good matrix for obtaining well-dispersed CuO nanoparticles. In addition, In contrary to other works on CO oxidation over MOF-based catalysts that undergo in situ transformation to CeO 2 -CuO [25,41], our aim was to conduct the reaction maintaining the metal-organic framework. It was proven by the XRD analysis for H1, Ce@H1(W), and Ce@H1(D) ( Figure 12) that after catalytic tests the HKUST-1 structure was preserved; however, small intensity reflexes of CuO and Cu 2 O can be observed on the diffractogram of H1, which is due to oxidation of the BTC linker.…”

Section: Catalytic Tests Of Co Oxidationmentioning

confidence: 99%

See 1 more Smart Citation

HKUST-1-Supported Cerium Catalysts for CO Oxidation

et al. 2020

View full text Add to dashboard Cite

The synthesis method of metal–organic frameworks (MOFs) has an important impact on their properties, including their performance in catalytic reactions. In this work we report on how the performance of [Cu3(TMA)2(H2O)3]n (HKUST-1) and Ce@HKUST-1 in the reaction of CO oxidation depends on the synthesis method of HKUST-1 and the way the cerium active phase is introduced to it. The HKUST-1 is synthesised in two ways: via the conventional solvothermal method and in the presence of a cationic surfactant (hexadecyltrimethylammonium bromide (CTAB)). Obtained MOFs are used as supports for cerium oxide, which is deposited on their surfaces by applying wet and incipient wetness impregnation methods. To determine textural properties, structure, morphology, and thermal stability, the HKUST-1 supports and Ce@HKUST-1 catalysts are characterised using X-ray diffraction (XRD), N2 sorption, scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FT-IR), and thermogravimetric analysis (TGA). It is proven that the synthesis method of HKUST-1 has a significant impact on its morphology, surface area, and thermal stability. The synthesis method also influences the dispersion and the morphology of the deposited cerium oxide. Last but not least, the synthesis method affects the catalytic activity of the obtained material.

show abstract

Section: Catalytic Tests Of Co Oxidationmentioning

confidence: 43%

Section: Catalytic Tests Of Co Oxidationmentioning

confidence: 99%

HKUST-1-Supported Cerium Catalysts for CO Oxidation

et al. 2020

View full text Add to dashboard Cite

show abstract

“…For example, some catalysts derived from Cebased MOFs can be used in CO oxidation. [97,[99][100][101][102][103][104] Zhang et al reported cauliflower-and strawsheave-like Ce-based catalysts derived from MOF materials with large surface areas. These porous catalysts can provide enough active sites and oxygen vacancies and exhibit excellent catalytic performance for CO oxidation.…”

Section: Harmful Gas Conversionmentioning

confidence: 99%

Rare‐Earth‐Based Metal–Organic Frameworks as Multifunctional Platforms for Catalytic Conversion

Shi

Cao

Liu

et al. 2021

Small

View full text Add to dashboard Cite

show abstract

“…Ceria-based materials have found wide applications in many catalytic processes [1], such as vehicle emission purification [2], water-gas shift reactions [3], CO oxidation [4] etc. Their excellent performance primarily stems from the unique Ce 4f orbital with strong electron localization characteristics, typically exhibiting the dynamic Ce 4+ /Ce 3+ transition [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%