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High-Entropy Spinel
Oxide as Highly Effective Catalysts
for the Catalytic Combustion of Volatile Organic Compounds
Meiyu Shi (17476728)
Wenli Gao (245749)
Kaixing Ru (25138830)
Qiang Niu (625783)
Yuan Shu (11766443)
Pengfei Zhang (32384)
Biochemistry
Chemical Sciences not elsewhere classified
Immunology
Biological Sciences not elsewhere classified
Virology
stable catalysts remains
reactive oxygen species
noble metal catalysts
highly effective catalysts
dft calculations indicated
entropy spinel oxides
entropy spinel oxide
industrial catalytic applications
6 </ sub
4 </ sub
3 </ sub
2 </ sub
entropy sample
catalytic combustion
synthesized via
study provided
significant potential
results demonstrated
promising strategy
promising solution
performance non
major category
human health
higher concentration
catalyst exhibited
adsorption energy
76 kj
Volatile organic compounds (VOCs) such as propylene represent
a
major category of pollutants threatening environmental safety and
human health. Catalytic combustion is a promising solution, yet designing
highly active and stable catalysts remains a challenge. In this work,
a high-entropy spinel oxide (Ni<sub>0.2</sub>Mg<sub>0.2</sub>Cu<sub>0.2</sub>Mn<sub>0.2</sub>Co<sub>0.2</sub>)Al<sub>2</sub>O<sub>4</sub> was synthesized via a sol–gel method. The results demonstrated
that the (Ni<sub>0.2</sub>Mg<sub>0.2</sub>Cu<sub>0.2</sub>Mn<sub>0.2</sub>Co<sub>0.2</sub>)Al<sub>2</sub>O<sub>4</sub> calcined at 700 °C
exhibited uniform elemental distribution and a high specific surface
area of 110.2 m<sup>2</sup>/g. The catalyst exhibited a higher concentration
of surface-reactive oxygen species and moderate C<sub>3</sub>H<sub>6</sub> adsorption energy. For the catalytic combustion of propylene
(C<sub>3</sub>H<sub>6</sub>), the catalyst achieved superior activity,
a low apparent activation energy of 64.76 kJ/mol, and it maintained
stable catalytic performance over 400 h without obvious deactivation.
DFT calculations indicated that the high-entropy sample has the lowest
oxygen vacancy formation energy. This study provided a promising strategy
for designing high-performance non-noble metal catalysts for propylene
elimination, highlighting the significant potential of high-entropy
spinel oxides in industrial catalytic applications.
2026-09-29T00:00:00Z
Text
Journal contribution
10.1021/acs.iecr.6c02459.s001
https://figshare.com/articles/journal_contribution/High-Entropy_Spinel_Oxide_as_Highly_Effective_Catalysts_for_the_Catalytic_Combustion_of_Volatile_Organic_Compounds/34027569
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