Influence of the formulation of catalysts deposited on cordierite monoliths for acetic acid oxidation

Sedjame, Henri-Joël; Brahmi, Rachid; Lafaye, Gwendoline; Barbier, J.; Fontaine, Céline

doi:10.1016/j.crci.2017.08.004

Cited by 7 publications

(2 citation statements)

References 60 publications

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“…Zhong et al (2018) reported several short-chain acids, such as acetic acid and formic acid, as major by-products that formed during the ozonation degradation of humic acids. Acetic acid-contaminated water not only causes great harm if ingested by livestock and to crop irrigation but also adversely affects the respiratory system and sensory organs of human beings (Sedjame et al 2018;Zhao et al 2018). Therefore, the effective degradation of acetic acid is of great significance for the complete mineralization of organic compounds in wastewater.…”

Section: Introductionmentioning

confidence: 99%

Complete mineralization of acetic acid using catalytic ozonation with a high energy efficiency enhanced by MnO2/γ-Al2O3

Meng

Yao

Gao

et al. 2021

Preprint

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The complete mineralization of acetic acid in a biodegradation process is difficult due to the α-position methyl on the carboxyl group of acetic acid. This study explores the complete oxidation of acetic acid by catalytic ozonation. Metal oxides of MnO2, Co3O4, Fe3O4, and CeO2 loaded on γ-Al2O3 power were used as the catalysts. The experimental results showed that MnO2/γ-Al2O3 catalyst had the best mineralization performance for acetic acid. Typically, the mineralization of acetic acid is as high as 88.4% after 300 min ozonation of 100 mL of 1.0 g L‒1 acetic acid catalysed by 3.0 g 1.0wt.% MnO2/γ-Al2O3 catalyst powder with an energy efficiency of 15 g kWh‒1. However, without a catalyst, the mineralization of acetic acid is only 33.2% with an energy efficiency of 5.1 g kWh−1. The effects of MnO2 loading, catalyst dosage, acetic acid concentration, O3 concentration, ozonation temperature, and initial pH value of the acetic acid solution were systematically investigated. Radical quenchers and in-situ DRIFTS analyses indicated that •OH radical and reactive oxygen species on catalyst surface played an important role in the ozonation of acetic acid to CO2 and H2O. The mechanism of acetic acid oxidation on MnO2/γ-Al2O3 is proposed.

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Section: Introductionmentioning

confidence: 99%

Complete mineralization of acetic acid using catalytic ozonation with a high energy efficiency enhanced by MnO2/γ-Al2O3

Meng

Yao

Gao

et al. 2021

Preprint

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“…It has been shown that the adherence of the active phase to the monolith is essential in the development of structured catalysts (Ashraf et al, 2018;Sedjame et al, 2018). Different factors affect this adherence, such as the characteristics of the suspension containing the active phase, the particle size of the solid to be deposited on the monolith, the nature of the dispersion medium, the concentration of solids and pH of the suspension (Landi et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

REMOVAL OF NITRATE FROM DRINKING WATER BY USING PdCu STRUCTURED CATALYSTS BASED ON CORDIERITE MONOLITHS

Jaworski

Barbero

Siri

et al. 2019

Braz. J. Chem. Eng.

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Structured catalysts were prepared, characterized and evaluated in NO 3 removal from drinking water. Different suspensions containing a previously optimized PdCu/5wt% ZrO 2-Al 2 O 3 powder catalyst (hereinafter PdCu/5ZA p) were prepared and deposited on cordierite monoliths by washcoating. The effect of suspension concentration, the particle size, the immersion number, the use of suspension stabilizer agent, and an alumina precoating on the coating adherence and catalytic performance were studied. All the prepared structured catalysts were active for the elimination of NO 3 and presented good selectivity to N 2 (> 93%) in synthetic water samples. The catalyst performance was related to the amount of deposited catalyst. The highest activity and the best coating adherence were obtained with the structured catalyst prepared by a single immersion in a 14 wt% concentration suspension, which was obtained from the powder catalyst milled for 10 h and stabilized with colloidal alumina. This catalyst also showed good activity when it was reused for four cycles and when it was evaluated with real water samples.

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Low temperature catalytic combustion of toluene over three-dimensionally ordered La0.8Ce0.2MnO3/cordierite catalysts

Zang

Zhao

Wang

et al. 2019

Applied Surface Science

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Influence of the formulation of catalysts deposited on cordierite monoliths for acetic acid oxidation

Cited by 7 publications

References 60 publications

Complete mineralization of acetic acid using catalytic ozonation with a high energy efficiency enhanced by MnO2/γ-Al2O3

Complete mineralization of acetic acid using catalytic ozonation with a high energy efficiency enhanced by MnO2/γ-Al2O3

REMOVAL OF NITRATE FROM DRINKING WATER BY USING PdCu STRUCTURED CATALYSTS BASED ON CORDIERITE MONOLITHS

Low temperature catalytic combustion of toluene over three-dimensionally ordered La0.8Ce0.2MnO3/cordierite catalysts

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