| Alternative title | Doped barium cerate perovskite catalysts for simultaneous NOx storage and soot oxidation |
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| Download | - View supplementary information: Doped barium cerate perovskite catalysts for simultaneous NOₓ storage and soot oxidation (PDF, 575 KiB)
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| DOI | Resolve DOI: https://doi.org/10.1016/j.apcata.2020.117465 |
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| Author | Search for: Maffei, N.; Search for: Nossova, L.ORCID identifier: https://orcid.org/0000-0003-1809-2540; Search for: Turnbull, M. J.1; Search for: Caravaggio, G.; Search for: Burich, R. |
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| Affiliation | - National Research Council of Canada. Energy, Mining and Environment
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| Format | Text, Article |
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| Subject | barium cerate; NOₓ storage; soot oxidation; high-energy ball milling |
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| Abstract | A series of doped barium cerate perovskite catalysts (BaCeO₃₋δ, BaCe₀.₈Zr₀.₂O₃₋δ and BaCe₀.₈Zr0.1Co₀.₁O₃₋δ) were prepared by a two-step process consisting of solid-state synthesis followed by high-energy ball milling. X-ray diffraction studies showed that the dopants (Zr and Co) were incorporated into the perovskite lattice. TPR studies revealed that the high-energy ball milling process significantly enhanced the reducibility of the catalysts. XPS data indicated a shift in electron density away from the metal centres and an increase in defect oxides, for the high-energy ball milled catalysts, which led to enhanced activity of the catalysts. The catalytic performance was evaluated in a fixed bed reactor system under simulated diesel exhaust conditions, including water. The high-energy ball milled barium cerate sample co-doped with Zr and Co exhibited NOₓ storage of ∼228 μmol/g at 380 °C and a Tₘₐₓ, at which the rate of soot oxidation reaction was maximum, of 436 °C. |
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| Publication date | 2020-06-25 |
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| Publisher | Elsevier |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | fefa1586-cbe9-41d6-b55d-d117387af3ba |
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| Record created | 2020-07-21 |
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| Record modified | 2021-01-19 |
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