Multiphase W–V–Hf-Ta Mixed-Metal Oxides for Catalytic Oxidation of Toluene
- 1University of Zagreb , , Trg Marka Marulića 19 , ,
- 2Tampere University , , ,
- 3Ruđer Bošković Institute , Bijenička Cesta 54 , ,
Abstract
Multiphase mixed-metal oxides (MMOs) containing W, V, Hf, Ta, and either Fe or Ti were synthesized by coprecipitation and evaluated as catalysts for toluene oxidation. Structural analysis determined the formation of multiphase crystalline systems, while energy-dispersive X-ray spectroscopy pointed out to homogeneous elemental distribution. X-ray photoelectron spectroscopy confirmed that all elements are present in oxidized states, consistent with the formation of mixed-metal oxides. The catalytic activity of the prepared MMO was tested in a fixed-bed reactor in the toluene degradation process. A one-dimensional pseudohomogeneous model assuming first-order kinetics successfully described the experimental data. The Ti-containing catalyst showed slightly higher activity, achieving a lower toluene removal temperature and having a lower activation energy (139.27 kJ mol–1) in comparison to the Fe-containing catalyst (145.41 kJ mol–1). The obtained results demonstrate that the investigated multiphase MMOs are promising candidates for volatile organic compounds removal.
Related
- Synthesis and Characterization of Lamellar Precursor-Derived Mixed Metal Oxides for Enhanced Catalytic Toluene Oxidation
- Comparison of One-Pot Synthesis and Incipient Wetness Impregnation for Nb-Mn/MCM-41 Catalysts in Plasma-Catalytic Oxidation of Toluene
- Effect of Y2O3 content on toluene oxidation performance and heat-generation behavior of induction-heated Ni–Y2O3 catalysts
- Stabilizing Cu+ in Mn-MIL-100 Enables Efficient Plasma–Catalytic Toluene Degradation
- Insights into the effect of exposed Mn2O3 crystal planes on toluene oxidation over MnOx/IM monolithic catalysts
BibTeX
@article{zuzic2026multiphase,
title = {{Multiphase W–V–Hf-Ta Mixed-Metal Oxides for Catalytic Oxidation of Toluene}},
author = {Andreja Žužić and Filip Car and Kimmo Lahtonen and Jelena Macan and Vesna Tomašić and Andreja Gajović},
journal = {ACS Omega},
year = {2026},
month = nov,
doi = {10.1021/acsomega.6c06708},
url = {https://pubs.acs.org/acsodf/article/doi/10.1021/acsomega.6c06708/5462645/Multiphase-W-V-Hf-Ta-Mixed-Metal-Oxides-for},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Multiphase W–V–Hf-Ta Mixed-Metal Oxides for Catalytic Oxidation of Toluene
AU - Andreja Žužić
AU - Filip Car
AU - Kimmo Lahtonen
AU - Jelena Macan
AU - Vesna Tomašić
AU - Andreja Gajović
PY - 2026
DA - 2026/11/03
JO - ACS Omega
DO - 10.1021/acsomega.6c06708
UR - https://pubs.acs.org/acsodf/article/doi/10.1021/acsomega.6c06708/5462645/Multiphase-W-V-Hf-Ta-Mixed-Metal-Oxides-for
AB - Multiphase mixed-metal oxides (MMOs) containing W, V, Hf, Ta, and either Fe or Ti were synthesized by coprecipitation and evaluated as catalysts for toluene oxidation. Structural analysis determined the formation of multiphase crystalline systems, while energy-dispersive X-ray spectroscopy pointed out to homogeneous elemental distribution. X-ray photoelectron spectroscopy confirmed that all elements are present in oxidized states, consistent with the formation of mixed-metal oxides. The catalytic activity of the prepared MMO was tested in a fixed-bed reactor in the toluene degradation process. A one-dimensional pseudohomogeneous model assuming first-order kinetics successfully described the experimental data. The Ti-containing catalyst showed slightly higher activity, achieving a lower toluene removal temperature and having a lower activation energy (139.27 kJ mol–1) in comparison to the Fe-containing catalyst (145.41 kJ mol–1). The obtained results demonstrate that the investigated multiphase MMOs are promising candidates for volatile organic compounds removal.
SN - 2470-1343
ER -