CO oxidation over fiberglasses with doped Cu-Ce-O catalytic layer prepared by surface combustion synthesis

Desyatykh, I. V.; Vedyagin, Aleksey A.; Mishakov, Ilya V.; Shubin, Yu. V.

doi:10.1016/j.apsusc.2015.04.185

Cited by 24 publications

(14 citation statements)

References 19 publications

(26 reference statements)

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“…Using CuCeO x -NP, we observed the required T sur to induce light-off effect decreased to 130 °C. Several studies have been reported the synergistic effect of CuO and CeO 2 in literature, due to the strong metal–support interaction at the interface of CuO and CeO 2 , which determines the redox feature and the subsequent catalytic behavior. − ,,,,,− ,, On the other hand, the required T sur significantly increased to 190 °C by using CuAlO x -NP as catalyst. The T cat of CuAlO x -NP, as shown in Figure c, was ≈ l00 °C lower than the bare Cu x O-based NPs under the same level of exothermic reaction (i.e., 100% of CO oxidation), indicating less heat accumulated in the catalyst to promote CO oxidation.…”

Section: Resultsmentioning

confidence: 99%

Mechanistic Study of Gas-Phase Controlled Synthesis of Copper Oxide-Based Hybrid Nanoparticle for CO Oxidation

Lee

Chou

et al. 2016

J. Phys. Chem. C

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We report a systematic study of gas-phase controlled synthesis of copper oxides-based hybrid nanoparticles for catalytic CO oxidation. The complementary physical, spectroscopic, and microscopic analyses were conducted to obtain a better understanding of the material properties, including particle size, crystallinity, elemental composition, and oxidation state. Results showed that the synthesized nanoparticles exhibited highly durable catalytic activity and stability, also the particle size, crystallite size, and chemical composition were tunable by choosing suitable chemical compositions of precursors and temperatures. The crystallite size of CuO influenced the reducibility of CuO by CO and the subsequent catalytic activity of CO oxidation. The hybridization process of CeO2 and CuO induces the formation of new active sites at the Cu–Ce–O interface, which enhances reproducibility of CuO and the catalytic activity. However, the reproducibility of CuO and catalytic activity were considerably decreased when CeO2 was replaced with the inert Al2O3. This work describes a prototype method to form highly pure and well-controlled hybrid nanocatalysts, which can be used to establish the correlation of material properties versus reducibility and subsequent catalytic activity for energy and environmental applications.

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Section: Resultsmentioning

confidence: 99%

Mechanistic Study of Gas-Phase Controlled Synthesis of Copper Oxide-Based Hybrid Nanoparticle for CO Oxidation

Lee

Chou

et al. 2016

J. Phys. Chem. C

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“…27,32 At the surface of the hybrid nanostructure, the adsorbed methane and oxygen molecules dissociate to a surface-bound methyl group and oxygen atoms during the alternating redox conditions, respectively (Figure 9b-2). 25,27,29,32 An oxygen vacancy regenerates after the release of water, and subsequently it combines with the oxygen atoms (Figure 9b-3). The dissociated methyl group is further oxidized by the adsorbed oxygen atoms, and then a water molecule is released and an oxygen vacancy is regenerated (Figure 9b-4).…”

Section: Resultsmentioning

confidence: 99%

“…12,20−24 However, the obvious challenging problems for the noble metal-based catalysts are expensive, easily sintered, volatile, and poisoned in the presence of water, sulfur, and other reactive gases during the operation. 1,3,4,16,25 In contrast, transition-metal oxides arise as methane combustion catalysts in the market mainly due to the low cost and operation stability. 2,6,7,10,13,26,27 Among the transition-metal oxide catalysts, copper oxide, especially in the form of nanoparticles (NPs), has shown to be a promising substitute to noble metal-based catalysts.…”

Section: Introductionmentioning

confidence: 99%

Synergistic Catalysis of Methane Combustion Using Cu–Ce–O Hybrid Nanoparticles with High Activity and Operation Stability

Chou

Lee

et al. 2016

J. Phys. Chem. C

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A new CuO–CeO2 hybrid nanoparticle (CuCeO x -NP) with a tunable homogeneous chemical composition was successfully prepared for high-performance catalytic methane combustion. The substantial amounts of Cu–Ce–O interfaces were created for enhanced catalysis using gas-phase evaporation-induced self-assembly. The CuCeO x -NP exhibited an ultralow light-off temperature (320 °C), high activity, selectivity, and operation stability for catalytic methane combustion. The optimal reducibility and the corresponding catalytic activity of CuCeO x -NP were achieved when the molar fraction of Ce was 0.17. The operation stability increased as the concentration ratio of oxygen in the reactant gas and the corresponding oxidation rate of carbon species from the catalyst surface increased. This work demonstrates a facile route for controlled synthesis of CuCeO x -NP. The mechanistic understanding of synergistic catalysis developed in this study can be used to further enhance activity of methane combustion and reduce environmental pollution for alternative energy applications.

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“…After SCS the physico‐chemicals analysis revealed that the active components detected on the support surface appeared in three different states: large agglomerates, small particles, and thin oxide film. The catalytic activity in CO oxidation was evaluated in terms of the dopant's nature (Co 3 O 4 , Mn 3 O 4 ) over supported copper‐ceria samples and it was established that the the catalysts’ activity is directly related to the dopant nature and the sort of its interaction with CuO phase …”

Section: Oxidation Reactionsmentioning

confidence: 99%

Review of Recent Studies on Solution Combustion Synthesis of Nanostructured Catalysts

et al. 2018

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Solution combustion synthesis (SCS) is a relatively new method for synthesizing catalytic materials with many distinct advantages: simplicity of method, short reaction times, and the capability to regulate crystal lattice parameters and thereby the activity and selectivity of catalysts. Over the last years, SCS has been used for the production and study of a multitude of new catalytic materials. This review considers and discusses the recent developments and trends in SCS of nanocatalysts, while special attention is paid to the development and applications of nanostructured catalysts.

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CO oxidation over fiberglasses with doped Cu-Ce-O catalytic layer prepared by surface combustion synthesis

Cited by 24 publications

References 19 publications

Mechanistic Study of Gas-Phase Controlled Synthesis of Copper Oxide-Based Hybrid Nanoparticle for CO Oxidation

Mechanistic Study of Gas-Phase Controlled Synthesis of Copper Oxide-Based Hybrid Nanoparticle for CO Oxidation

Synergistic Catalysis of Methane Combustion Using Cu–Ce–O Hybrid Nanoparticles with High Activity and Operation Stability

Review of Recent Studies on Solution Combustion Synthesis of Nanostructured Catalysts

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