Spinel Co3O4 oxides-support synergistic effect on catalytic oxidation of toluene

Chai, Guangtao; Du, Dan; Wang, Chao; Zhang, Chuanhui; Cárdenas, Luis; Bion, Nicolas; Guo, Yanglong; Gil, Sonia; Giroir‐Fendler, A.

doi:10.1016/j.apcata.2021.118044

Cited by 23 publications

(2 citation statements)

References 51 publications

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“…It was found that the ratio between the amount of H 2 assigned to the first and the second reduction steps was 0.32 for the Co 3 O 4 (S) oxide, very close to the theoretical value of 0.33. Interestingly, this ratio was appreciable lower (0.26) for the Co 3 O 4 (U) sample, thereby evidencing a larger abundance of Co 2+ species [34]. By contrast, the ratio for the third counterpart (Co 3 O 4 (A)) was higher (0.39), with a notable relative contribution of Co 3+ cations.…”

Section: Physical-chemical Characterisationmentioning

confidence: 88%

Co3o4 Hollow Nanotubes for the Catalytic Oxidation of C2-Chlorinated Vocs

López‐Fonseca

Gil-Barbarin

Gutiérrez-Ortiz

et al. 2023

Preprint

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Section: Physical-chemical Characterisationmentioning

confidence: 88%

Co3o4 Hollow Nanotubes for the Catalytic Oxidation of C2-Chlorinated Vocs

López‐Fonseca

Gil-Barbarin

Gutiérrez-Ortiz

et al. 2023

Preprint

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“…The results indicate that Ce can increase the Co 2+ content on the surface of the catalyst, which may be because Co 3+ is partially replaced by Co 2+ or Ce 4+ and Ce 3+ . The existence of Co 2+ species is often accompanied by oxygen vacancy and oxygen mobility, which is conducive to the activation and rapid transfer of oxygen molecules, and thus promotes the catalytic oxidation of toluene [43,44].…”

Section: Surface Composition Of the Catalystsmentioning

confidence: 99%

Enhanced low-temperature activity of toluene combustion over Ce-modified Co3O4 catalyst by weakening Co−O strength

Cheng

Fan

Mao

et al. 2023

Reac Kinet Mech Cat

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In this study, a series of Ce-modified Co3O4 catalysts were prepared by co-precipitation.The influence of Ce/(Ce+Co) ratio on the catalyst microstructure and catalytic oxidation performance of toluene were systematically investigated. The results showed that introduction of Ce lead to great changes in the structure with a smaller crystallite size of Co3O4 and larger specific surface area of the catalyst. More importantly, Ce dopant can significantly weaken the Co-O bond strength and enhance the activity of oxygen species, thus improving the degradation efficiency of toluene. Due to the weakest Co-O bond strength, abundant oxygen vacancy, and the strongest reducibility of Co 3+ , CoCe0.05Ox catalyst exhibited the best catalytic oxidation activity of toluene (T90=225℃). In addition, CoCe0.05Ox catalyst presented good stability and repeatability during 30 h durability test under water vapor.

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A Review on Fe₂O₃‐Based Catalysts for Toluene Oxidation: Catalysts Design and Optimization with the Formation of Abundant Oxygen Vacancies

Zhang,

He,

Tang

et al. 2024

ChemCatChem

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Volatile organic compounds (VOCs) are typical pollutants with hazards for humans and the environment, and can be efficiently mitigated by catalytic combustion. Fe2O3‐based catalysts are a promising choice due to their low cost and strong redox ability. Several attempts have been made to promote the catalytic performance of Fe2O3 at low temperatures. This review summarizes the research progress on Fe2O3‐based catalysts for the oxidation of toluene, one of the most common and harmful VOC. Firstly, the properties and catalytical performance for Fe2O3‐based catalysts were summarized, and the reaction mechanisms for toluene oxidation on the surface of Fe2O3 were detailed to comprehend the role of oxygen vacancy. Then, the modification for single Fe2O3 catalysts, including synthesis parameters, structure and morphology control, has been introduced to reveal the correlation between physicochemical properties of catalysts and their activity. In addition, composite Fe2O3 catalysts, which can promote catalytic performance significantly due to the synergetic effect between different components, were comprehended. Finally, waste‐derived Fe2O3 catalysts with sustainable merit as converting waste into worth have been discussed. Moreover, the advanced machine learning tools, which are helpful in accelerating catalyst design, configuration optimization and reactivity prediction, have been introduced as an emerging research opportunity for the future.

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Spinel Co3O4 oxides-support synergistic effect on catalytic oxidation of toluene

Cited by 23 publications

References 51 publications

Co3o4 Hollow Nanotubes for the Catalytic Oxidation of C2-Chlorinated Vocs

Co3o4 Hollow Nanotubes for the Catalytic Oxidation of C2-Chlorinated Vocs

Enhanced low-temperature activity of toluene combustion over Ce-modified Co3O4 catalyst by weakening Co−O strength

A Review on Fe₂O₃‐Based Catalysts for Toluene Oxidation: Catalysts Design and Optimization with the Formation of Abundant Oxygen Vacancies

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Spinel Co3O4 oxides-support synergistic effect on catalytic oxidation of toluene

Cited by 23 publications

References 51 publications

Co3o4 Hollow Nanotubes for the Catalytic Oxidation of C2-Chlorinated Vocs

Co3o4 Hollow Nanotubes for the Catalytic Oxidation of C2-Chlorinated Vocs

Enhanced low-temperature activity of toluene combustion over Ce-modified Co3O4 catalyst by weakening Co−O strength

A Review on Fe2O3‐Based Catalysts for Toluene Oxidation: Catalysts Design and Optimization with the Formation of Abundant Oxygen Vacancies

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About

A Review on Fe₂O₃‐Based Catalysts for Toluene Oxidation: Catalysts Design and Optimization with the Formation of Abundant Oxygen Vacancies