Synergetic mechanism for basic and acid sites of MgMxOy (M = Fe, Mn) double oxides in catalytic ozonation of p-hydroxybenzoic acid and acetic acid

Shen, Tongdong; Su, Wentao; Yang, Qiangqiang; Ni, Jun; Tong, Shaoping

doi:10.1016/j.apcatb.2020.119346

Cited by 58 publications

(17 citation statements)

References 53 publications

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“…6 Hence, ozonebased advanced oxidation processes with ˙OH generation have been extensively studied in recent years. 7,8 In the past decade, a series of catalysts (such as metal oxide catalysts, 9 supported metal catalysts, 10 and carbon-based catalysts 11 ) have been used to heterogeneously catalyze ozone with a satisfactory effect. Nevertheless, carbon-based catalysts are easily damaged by ozone, resulting in a gradual decline of catalytic performance.…”

Section: Introductionmentioning

confidence: 99%

Hydraulic-driven piezoelectric ozonation process for nitrobenzene degradation: synergy, energy consumption, impact factors, mechanism, and application potential

Zhuang¹,

Shuai

Yang³

et al. 2022

Environ. Sci.: Water Res. Technol.

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Section: Introductionmentioning

confidence: 99%

Hydraulic-driven piezoelectric ozonation process for nitrobenzene degradation: synergy, energy consumption, impact factors, mechanism, and application potential

Zhuang¹,

Shuai

Yang³

et al. 2022

Environ. Sci.: Water Res. Technol.

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“…The relative ratio of Fe 2+ decreases from 54.3 to 45.88%. It can be deduced that ozone can react with low valence state metal ions in the lattice to produce reactive oxygen species and high valence state metal ions . For Fe 2 O 3 , the Fe 2p 3/2 region was also split into two peaks.…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, it is of great significance to find out a stable calcium-based catalyst with high activity. Recently, it has been reported that MgFe x O y shows great catalytic performance for the degradation of organic pollutants in the catalytic ozonation process . Recently, researchers have demonstrated that there is a slight shift of the iron atoms from the cubic perovskite structure in the Ca 2 Fe 2 O 5 catalyst, which may create oxygen vacancies and facilitate the mobility of oxygen .…”

Section: Introductionmentioning

confidence: 99%

Catalytic Ozonation over Ca₂Fe₂O₅ for the Degradation of Quinoline in an Aqueous Solution

Wang

Zhou

Zheng

et al. 2022

Ind. Eng. Chem. Res.

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The treatment of industrial wastewater with various organic compounds was essential for the source control of water pollution. Catalytic ozonation process was widely used in wastewater treatment due to its higher efficiency and easy operation. In this work, Ca 2 Fe 2 O 5 was prepared by the sol−gel method and used as a catalyst to remove quinoline effectively by the catalytic ozonation process. The physical and chemical properties of the catalyst have been well characterized by X-ray diffraction, Fourier transform infrared spectroscopy, N 2 physical adsorption−desorption profiles, transmission electron microscopy, and X-ray photoelectron spectroscopy. The results have shown that calcium iron oxide has sheet micromorphology and good crystal structure. In addition, the Ca 2 Fe 2 O 5 catalyst has more oxygen vacancies than the Fe 2 O 3 catalyst, which can promote the decomposition of ozone molecules to produce active free radicals effectively. In this study, the Ca 2 Fe 2 O 5 catalyst has shown higher catalytic activity than the other reported catalysts, which can remove quinoline and other organics from an aqueous solution effectively. In the Ca 2 Fe 2 O 5 /O 3 system, more ozone molecules decomposed to generate • OH radicals, which inhibited the direct reaction of ozone and quinoline to produce NH 4 + -N. Meanwhile, • OH radicals generated in the catalytic ozonation process has increased the chemical oxygen demand removal rate efficiently. In addition, the intermediate products in the catalytic ozonation process were studied by electrospray ionization−mass spectrometry analysis. This research shows a promising way to prepare efficient catalysts for the treatment of quinoline by the catalytic ozonation process.

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“…This difference could be explained by the presence of NO x inside the reactor when the air was used instead of oxygen to generate ozone [46]. Indeed, the effect of water has been shown to be limited in the presence of NO x , as demonstrated by Subrahmanyam et al on activated carbon [46] and Mehandjiev et al on catalysts based on manganese oxide [47][48][49]. However, the addition of a small amount of palladium was found to considerably limit this undesirable effect.…”

Section: Catalytic Activity In Dry and Humid Conditionsmentioning

confidence: 99%

Low-Temperature O3 Decomposition over Pd-TiO2 Hybrid Catalysts

et al. 2022

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In aircraft and spacecraft, outside air is not directly fed to the passenger because it contains ozone at elevated altitudes. The decomposition of low concentration ozone in the air was carried out at 25 °C by catalytic oxidation on Pd-based catalysts supported on a high surface area hybrid TiO2. The use of these hybrid catalysts has shown a beneficial effect, both on the catalytic activity and on the catalyst stability. Kinetic studies showed that the most promising catalytic phase (Pd/TiO2_100) was the one obtained from the TiO2 support containing the lowest content of citrate ligands and leading to small Pd particles (around 4 nm). The effect of catalyst synthesis on the decomposition of O3 gas (15 ppm) in a dry and humid (HR = 10%) stream in a closed environment such as aircraft or spacecraft was also investigated in this study and further elucidated by detailed characterizations. It was shown that the system could be used as an effective treatment for air coming from outside.

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Synergetic mechanism for basic and acid sites of MgMxOy (M = Fe, Mn) double oxides in catalytic ozonation of p-hydroxybenzoic acid and acetic acid

Cited by 58 publications

References 53 publications

Hydraulic-driven piezoelectric ozonation process for nitrobenzene degradation: synergy, energy consumption, impact factors, mechanism, and application potential

Hydraulic-driven piezoelectric ozonation process for nitrobenzene degradation: synergy, energy consumption, impact factors, mechanism, and application potential

Catalytic Ozonation over Ca₂Fe₂O₅ for the Degradation of Quinoline in an Aqueous Solution

Low-Temperature O3 Decomposition over Pd-TiO2 Hybrid Catalysts

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Synergetic mechanism for basic and acid sites of MgMxOy (M = Fe, Mn) double oxides in catalytic ozonation of p-hydroxybenzoic acid and acetic acid

Cited by 58 publications

References 53 publications

Hydraulic-driven piezoelectric ozonation process for nitrobenzene degradation: synergy, energy consumption, impact factors, mechanism, and application potential

Hydraulic-driven piezoelectric ozonation process for nitrobenzene degradation: synergy, energy consumption, impact factors, mechanism, and application potential

Catalytic Ozonation over Ca2Fe2O5 for the Degradation of Quinoline in an Aqueous Solution

Low-Temperature O3 Decomposition over Pd-TiO2 Hybrid Catalysts

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Product

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Catalytic Ozonation over Ca₂Fe₂O₅ for the Degradation of Quinoline in an Aqueous Solution