Influence of zirconia addition in TiO2 and TiO2–CeO2 aerogels on the textural, structural and catalytic properties of supported vanadia in chlorobenzene oxidation

Gannoun, Chiraz; Ghorbel, Abdelhamid; Gaigneaux, Éric M.

doi:10.1039/d1ra08611a

Cited by 3 publications

(1 citation statement)

References 53 publications

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“…Figure 6 shows the H 2 -TPR profiles of the x VÀ SiO 2 catalysts. The high-temperature peak at 429-436 °C is attributed to highly dispersed VO x species, [45,46] suggesting that the VO x species are distributed more uniformly on the catalyst surface with increased V loading. Moreover, the 0.5 VÀ SiO 2 sample exhibits a higher reduction temperature of 538 °C.…”

Section: H 2 -Tpr Resultsmentioning

confidence: 99%

One‐pot synthesis of V doped mesoporous SiO₂ catalysts for selective oxidation of ethane and propane

Song

Fan

et al. 2023

ChemistrySelect

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A series of vanadium‐doped mesoporous SiO2 catalysts were prepared using a one‐pot emulsion method. The effects of VOx species with different structures on C−H bond activation and product selectivity in ethane and propane selective oxidation were investigated using X‐ray diffraction (XRD), N2 adsorption‐desorption, scanning electron microscopy (SEM), transmission electron microscopy (TEM), Raman, ultraviolet‐visible diffuse reflectance spectroscopy (UV‐Vis DRS), hydrogen temperature programmed reduction (H2‐TPR), and ammonia temperature programmed desorption (NH3‐TPD) characterizations. The results revealed that the highly dispersed isolated tetrahedral VOx species on the catalyst gradually polymerized into highly dispersed oligomeric VOx species with the increased V loading. The former is beneficial for the formation of olefins and total aldehydes during the selective oxidation of propane. Oligomeric VOx species are conducive to improving the selectivity of ethylene and acetaldehyde in the selective oxidation of ethane. The highest catalytic performances for selective oxidation of ethane and propane were obtained at a temperature of 650 °C. The conversion of ethane was 41.6 %, with a corresponding yield of ethylene and acetaldehyde of 23.6 % over a 0.5 V−SiO2 catalyst. In contrast, the propane conversion was 61.5 %, with a corresponding total yield of olefins and aldehydes of 41.3 % over a 1.0 V−SiO2 catalyst.

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Section: H 2 -Tpr Resultsmentioning

confidence: 99%

One‐pot synthesis of V doped mesoporous SiO₂ catalysts for selective oxidation of ethane and propane

Song

Fan

et al. 2023

ChemistrySelect

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Promoting effect of Ti on MnTiOx catalysts for benzene highly efficient oxidation

Yao

et al. 2022

Journal of Environmental Chemical Engineering

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Recent advances in catalytic oxidation of chlorobenzene over metal oxide-based catalysts

Ye,

Gao,

Feng

et al. 2024

Separation and Purification Technology

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Influence of zirconia addition in TiO₂ and TiO₂–CeO₂ aerogels on the textural, structural and catalytic properties of supported vanadia in chlorobenzene oxidation

Abstract: Chlorobenzene conversion over vanadia supported catalysts.

Cited by 3 publications

References 53 publications

One‐pot synthesis of V doped mesoporous SiO₂ catalysts for selective oxidation of ethane and propane

One‐pot synthesis of V doped mesoporous SiO₂ catalysts for selective oxidation of ethane and propane

Promoting effect of Ti on MnTiOx catalysts for benzene highly efficient oxidation

Recent advances in catalytic oxidation of chlorobenzene over metal oxide-based catalysts

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Influence of zirconia addition in TiO2 and TiO2–CeO2 aerogels on the textural, structural and catalytic properties of supported vanadia in chlorobenzene oxidation

Abstract: Chlorobenzene conversion over vanadia supported catalysts.

Cited by 3 publications

References 53 publications

One‐pot synthesis of V doped mesoporous SiO2 catalysts for selective oxidation of ethane and propane

One‐pot synthesis of V doped mesoporous SiO2 catalysts for selective oxidation of ethane and propane

Promoting effect of Ti on MnTiOx catalysts for benzene highly efficient oxidation

Recent advances in catalytic oxidation of chlorobenzene over metal oxide-based catalysts

Contact Info

Product

Resources

About

Influence of zirconia addition in TiO₂ and TiO₂–CeO₂ aerogels on the textural, structural and catalytic properties of supported vanadia in chlorobenzene oxidation

One‐pot synthesis of V doped mesoporous SiO₂ catalysts for selective oxidation of ethane and propane

One‐pot synthesis of V doped mesoporous SiO₂ catalysts for selective oxidation of ethane and propane