Jabłońska, M;
Arán, MA;
Beale, AM;
Góra-Marek, K;
Delahay, G;
Petitto, C;
Pacultová, K;
(2019)
Catalytic decomposition of N2O over Cu–Al–Ox mixed metal oxides.
RSC Advances
, 9
(7)
pp. 3979-3986.
10.1039/c8ra10509j.
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Abstract
Cu–Al–Ox mixed metal oxides with intended molar ratios of Cu/Al = 85/15, 78/22, 75/25, 60/30, were prepared by thermal decomposition of precursors at 600 °C and tested for the decomposition of nitrous oxide (deN2O). Techniques such as XRD, ICP-MS, N2 physisorption, O2-TPD, H2-TPR, in situ FT-IR and XAFS were used to characterize the obtained materials. Physico-chemical characterization revealed the formation of mixed metal oxides characterized by different specific surface area and thus, different surface oxygen default sites. The O2-TPD results gained for Cu–Al–Ox mixed metal oxides conform closely to the catalytic reaction data. In situ FT-IR studies allowed detecting the form of Cu+⋯N2 complexes due to the adsorption of nitrogen, i.e. the product in the reaction between N2O and copper lattice oxygen. On the other hand, mostly nitrate species and NO were detected but those species were attributed to the residue from catalyst synthesis.
| Type: | Article |
|---|---|
| Title: | Catalytic decomposition of N2O over Cu–Al–Ox mixed metal oxides |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1039/c8ra10509j |
| Publisher version: | https://doi.org/10.1039/c8ra10509j |
| Language: | English |
| Additional information: | This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes. https://creativecommons.org/licenses/by-nc/3.0/ |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10068356 |
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