CeCu composite oxide for chlorophenol effective removal by heterogeneous catalytic wet peroxide oxidation

Xie, Hongmei; Zeng, Jia; Zhou, Guilin

doi:10.1007/s11356-019-07042-5

Cited by 10 publications

(3 citation statements)

References 37 publications

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“…(1) Generally speaking, the larger speci c surface area and pore volume of catalysts can provide more active sites for adsorption and activation of reactants, which is conducive to the improvement of catalytic activity (Zhao et al 2018;Xie et al 2020). N 2 adsorption/desorption characterization results (Table 1)…”

Section: Correlation Between Physicochemical Properties and Catalytic...mentioning

confidence: 99%

CO oxidation over Cu-Ce binary oxide prepared by solvothermal method: Effects of cerium precursors on the properties and catalytic behavior

Jin

Liu

et al. 2022

Preprint

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Cu-Ce binary oxides were prepared by one-pot solvothermal method, and the effects of different cerium precursors (cerium nitrate and cerium ammonium nitrate) on the catalytic activity and resistance to water vapor or CO2 of the prepared samples for low-temperature CO oxidation reaction were investigated. The physico-chemical characteristics of the catalysts were characterized by thermal analyses (TG-DSC), X-ray diffraction (XRD), Raman spectroscopy, N2 adsorption-desorption, inductively coupled plasma-atomic emission spectrometry (ICP-AES), X-ray photoelectron spectroscopy (XPS), in-situ diffuse reflectance infrared Fourier transform spectroscopy (in-situ DRIFTs), temperature-programmed reduction with H2 (H2-TPR), and temperature-programmed desorption of adsorbed O2 (O2-TPD). The results indicated that the CuO-CeO2 catalyst (CC-N) prepared with cerium nitrate showed higher activity for low-temperature CO oxidation, which can be ascribed to its larger specific surface area and pore volume, more amounts of highly dispersed CuO species with strong interaction with CeO2, Cu+ species, and more active surface oxygen species, compared with the counterpart prepared with cerium ammonium nitrate (CC-NH). Furthermore, the CC-N catalyst also exhibited better resistance to CO2 poisoning than CC-NH.

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Section: Correlation Between Physicochemical Properties and Catalytic...mentioning

confidence: 99%

CO oxidation over Cu-Ce binary oxide prepared by solvothermal method: Effects of cerium precursors on the properties and catalytic behavior

Jin

Liu

et al. 2022

Preprint

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“…5,6 Compared with the Fenton technology, heterogeneous catalytic wet peroxide oxidation technology is the ideal choice for separation of catalyst from reaction medium. [7][8][9] In the heterogeneous catalytic wet peroxide oxidation system, the carrier plays an important role in the improvement of catalytic oxidation efficiency. 10,11 Conventionally, the catalyst carrier has the following functions: (1) a signicant increase in the contact area between the reaction liquid and the catalyst; 12,13 (2) hydrophobicity and chemical stability improvement of the catalyst; 14 (3) rapid separation and recycling of the catalyst.…”

Section: Introductionmentioning

confidence: 99%

“…They can promote the generation of hydroxyl radicals and electron transfer reactions, accelerate the cycle between different valence states of rare earth elements or iron elements, and improve the efficiency of heterogeneous catalytic wet peroxide oxidation degradation. 8,9 Therefore, the introduction of rare earth elements into catalytic wet peroxide oxidation systems is conducive to the degradation of organic pollutants in water. The stable valence state of rare earth ions is usually positive trivalent, but under certain conditions, Ce undergoes a valence change and becomes positive tetravalent, which exists in some solids or in solution.…”

Section: Introductionmentioning

confidence: 99%

Rhodamine B dye is efficiently degraded by polypropylene-based cerium wet catalytic materials

et al. 2020

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Catalytic activity of metals in heterogeneous Fenton-like oxidation of wastewater contaminants: a review

2021

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Innovations in water technology are needed to solve challenges of climate change, resource shortages, emerging contaminants, urbanization, sustainable development and demographic changes. In particular, conventional techniques of wastewater treatment are limited by the presence of poorly biodegradable organic matter. Alternatively, recent Fenton, Fenton-like and hybrid processes appear successful for cleaning of different types of liquid wastewaters. Here, we review the application of metallic catalyst-H2O2 systems in the heterogeneous Fenton process. Each metallic catalyst-H2O2 system has unique redox properties due to metal oxidation state. Solution pH is a major influencing factor. Catalysts made of iron and cerium form stable complexes with oxidation products and H2O2, thus resulting in reduced activities. Copper forms transitory complexes with oxidation products, but copper catalytic activity is restored during the reaction. Silver and manganese do not form complexes. The catalyst performance for degradation and mineralization decreases in the order: manganese, copper, iron, silver, cerium, yet the easiness of practical application decreases in the order: copper, manganese, iron, silver, cerium.

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CeCu composite oxide for chlorophenol effective removal by heterogeneous catalytic wet peroxide oxidation

Cited by 10 publications

References 37 publications

CO oxidation over Cu-Ce binary oxide prepared by solvothermal method: Effects of cerium precursors on the properties and catalytic behavior

CO oxidation over Cu-Ce binary oxide prepared by solvothermal method: Effects of cerium precursors on the properties and catalytic behavior

Rhodamine B dye is efficiently degraded by polypropylene-based cerium wet catalytic materials

Catalytic activity of metals in heterogeneous Fenton-like oxidation of wastewater contaminants: a review

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