Low-temperature removal of toluene and propanal over highly active mesoporous CuCeOx catalysts synthesized via a simple self-precipitation protocol

He, Chi; Yu, Yanke; Yue, Lin; Qiao, Nanli; Li, Jinjun; Shen, Qun; Yu, Weijia; Chen, Jinsheng; Hao, Zhengping

doi:10.1016/j.apcatb.2013.08.039

Cited by 162 publications

(96 citation statements)

References 57 publications

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“…Praliaud et al [19] observed an appearance of transition band at 450 nm during outgassing of alumina supported 6.4 wt.% of Cu at 773 K and ascribed it to the formation of three-dimensional Cu +1 clusters in the CuO matrix. He et al [20] also assigned this peak to Cu +1 in CuO/CeO 2 solids and confirmed this by means of XPS analysis. However, Smeets of the bis(-oxo)dicopper core and believed that this type of Cu is active in catalytic N 2 O decomposition [21].…”

Section: Characterization Of Cuo/ceo 2 Materialsmentioning

confidence: 62%

Small CuO clusters on CeO2 nanospheres as active species for catalytic N2O decomposition

Zabilskiy

Djinović

Erjavec

et al. 2015

Applied Catalysis B: Environmental

110

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Section: Characterization Of Cuo/ceo 2 Materialsmentioning

confidence: 62%

Small CuO clusters on CeO2 nanospheres as active species for catalytic N2O decomposition

Zabilskiy

Djinović

Erjavec

et al. 2015

Applied Catalysis B: Environmental

110

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“…and Cu ? species as there are no literature data for Cu 0 with such low Auger kinetic energy [39]. The ratios of Cu ?…”

Section: X-ray Photoelectron Spectroscopymentioning

confidence: 98%

Solvothermal synthesis in ethylene glycol and catalytic activity for CO oxidation of CuO/CeO2 catalysts

et al. 2015

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A series of supported CuO/CeO 2 catalysts with various CuO loadings (5-25 wt%) were prepared using a solvothermal method with ethylene glycol as solvent. The effects of CuO loading on physicochemical properties and catalytic activity of the prepared CuO/CeO 2 catalysts have been investigated by X-ray diffraction, Raman spectroscopy, BET surface area measurement, X-ray photoelectron spectroscopy, temperature-programmed reduction with H 2 , temperature-programmed desorption of CO techniques, and low-temperature CO oxidation reaction test.The results indicate that the catalyst with 10 wt% CuO loading has the highest catalytic activity, which can be attributed to the largest amounts of well-dispersed CuO species strongly interacting with support CeO 2 and oxygen vacancies caused by the incorporation of Cu 2? into CeO 2 lattice, and the highest concentration of and the most active lattice oxygen. The activity for CO oxidation of the supported CuO/CeO 2 catalyst prepared by the present solvothermal method was significantly higher than that of the counterparts prepared by the commonly used impregnation and deposition-precipitation methods.

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“…Nonetheless, the synthesis of mesostructured silica or carbon template is rather complex and time-consuming. Previously, we synthesized mesoporous CuO x -CeO 2 catalysts with large surface area (up to 162.8 m 2 /g) via a facile self-assembly method, and found that these materials possessed powerful catalytic activity for the oxidation of toluene and propanal [23]. However, the catalytic performances of mesoporous transition metal/ceria composites in CVOC oxidation were seldom considered.…”

Section: Introductionmentioning

confidence: 99%

“…Mesoporous transition metal oxides (MTMO) with d-shell electrons confined to nanosized walls and redox active internal surfaces show extreme fascinating prospects in VOC decomposition [17]. The synthesis of MTMO usually requires "soft" (e.g., surfactants or block copolymers) or "hard" (e.g., porous silica or carbon) structural templates [18][19][20][21][22][23] through a nanocasting route using KIT-6 silica as the hard template, over which 100% propane could be totally oxidized at around 225°C [22]. Nonetheless, the synthesis of mesostructured silica or carbon template is rather complex and time-consuming.…”

Section: Introductionmentioning

confidence: 99%

Catalytic destruction of chlorobenzene over mesoporous ACeOx (A=Co, Cu, Fe, Mn, or Zr) composites prepared by inorganic metal precursor spontaneous precipitation

Shi

et al. 2015

Fuel Processing Technology

Self Cite

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Mesostructured ACeO x (A = Co, Cu, Fe, Mn, or Zr) composites with large specific surface area and developed mesoporosity were prepared by inorganic metal precursor spontaneous precipitation (IMSP) method. Influences of catalyst surface area, pore structure, reducibility, and active oxygen concentration on catalytic performance were studied. Both preparation route and metal precursor type affect metal active site dispersion, and the IMSP is a desirable approach for synthesis of metal composites with homogeneous active phase distribution. The original crystalline structure of CeO 2 is well maintained although parts of transition metal cations are incorporated into its framework. The forming of A n+ -O 2− -Ce 4+ connections in ACeO x catalysts could reduce the redox potential of metal species, allowing effective redox cycles during oxidation reactions. CuCeO x demonstrates powerful catalytic efficiency with 99% of chlorobenzene (CB) destructed at 328°C, which is much lower than the other ACeO x oxides and Cu-doped catalysts synthesized via the incipient impregnation and coprecipitation methods (T 99 N 405°C). The active site reducibility is the foremost activity determining factor for CB destruction.

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Low-temperature removal of toluene and propanal over highly active mesoporous CuCeOx catalysts synthesized via a simple self-precipitation protocol

Cited by 162 publications

References 57 publications

Small CuO clusters on CeO2 nanospheres as active species for catalytic N2O decomposition

Small CuO clusters on CeO2 nanospheres as active species for catalytic N2O decomposition

Solvothermal synthesis in ethylene glycol and catalytic activity for CO oxidation of CuO/CeO2 catalysts

Catalytic destruction of chlorobenzene over mesoporous ACeOx (A=Co, Cu, Fe, Mn, or Zr) composites prepared by inorganic metal precursor spontaneous precipitation

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