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Published in: Journal of Materials Science 24/2021

19-05-2021 | Chemical routes to materials

Low-temperature catalytic combustion of benzene over Zr–Mn mixed oxides synthesized by redox-precipitation method

Authors: Yuan Qu, Simin Zhu, Long Zhang, Shikuan Sun, Xiaoping Dong, Limin Guo

Published in: Journal of Materials Science | Issue 24/2021

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Abstract

Zr-Mn mixed oxides with various Zr/Mn molar ratios were synthesized by redox-precipitation method and applied to benzene catalytic combustion. The results showed that the addition of Zr to MnO2 could improve the benzene combustion activity, among which Zr/MnO2-0.2 catalyst performed the best catalytic activity with T50 and T90 of 171 °C and 195 °C (1000 ppm benzene, GHSV = 60,000 ml · g−1 · h−1, 0% RH (relative humidity), 20 vol% O2/N2), respectively. A series of characterizations were used to investigate the structure–activity relationship of Zr–Mn mixed oxides, which demonstrated that the larger specific surface area, more surface reactive oxygen species, higher low-temperature reduction and acidity contributed to the enhanced catalytic activity of Zr–Mn mixed oxides. Finally, the possible pathways of benzene combustion over Zr–Mn mixed oxides were explored by in-situ DRIFTS spectra and the possible intermediates generated under different conditions were also revealed.

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Appendix
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Metadata
Title
Low-temperature catalytic combustion of benzene over Zr–Mn mixed oxides synthesized by redox-precipitation method
Authors
Yuan Qu
Simin Zhu
Long Zhang
Shikuan Sun
Xiaoping Dong
Limin Guo
Publication date
19-05-2021
Publisher
Springer US
Published in
Journal of Materials Science / Issue 24/2021
Print ISSN: 0022-2461
Electronic ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-021-06152-1

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