Fe-Beta@CeO2 core-shell catalyst with tunable shell thickness for selective catalytic reduction of NOx with NH3
A series of core-shell structural deNO x catalysts using small-grain Beta supporting FeO x nanoparticles as the core and tunable CeO 2 thin film thickness as sheaths were designed and controllably synthesized. Their catalytic performances were tested for selective catalytic reduction of NO x wit...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Published: |
John Wiley & Sons, Inc.
2017
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| Online Access: | http://hdl.handle.net/20.500.11937/54266 |
| _version_ | 1848759328211730432 |
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| author | Liu, J. Liu, Jian Zhao, Z. Wei, Y. Song, W. |
| author_facet | Liu, J. Liu, Jian Zhao, Z. Wei, Y. Song, W. |
| author_sort | Liu, J. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | A series of core-shell structural deNO x catalysts using small-grain Beta supporting FeO x nanoparticles as the core and tunable CeO 2 thin film thickness as sheaths were designed and controllably synthesized. Their catalytic performances were tested for selective catalytic reduction of NO x with NH 3 (NH 3 -SCR). It was found that CeO 2 shell thickness plays an important role in influencing the acidity and redox properties of the catalysts. Fe-Beta at CeO 2 core-shell catalysts exhibit excellent resistance to H 2 O and SO 2 and high NO x conversion (above 90%) in the wide temperature range (225-565°C). The kinetics result indicates that the coating of CeO 2 shell significantly increases the pore diffusion resistance of Fe-Beta at CeO 2 catalysts. Furthermore, in situ DRIFT results reveal that CeO 2 shell can promote the formation of NO 2 and cis- N2O2- species. But too thick CeO 2 shell (~20 nm) would result in the formation of inactive nitrate species, and thereby lead to a decrease of high-temperature activity of the catalysts. |
| first_indexed | 2025-11-14T09:58:08Z |
| format | Journal Article |
| id | curtin-20.500.11937-54266 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:58:08Z |
| publishDate | 2017 |
| publisher | John Wiley & Sons, Inc. |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-542662017-12-12T06:57:49Z Fe-Beta@CeO2 core-shell catalyst with tunable shell thickness for selective catalytic reduction of NOx with NH3 Liu, J. Liu, Jian Zhao, Z. Wei, Y. Song, W. A series of core-shell structural deNO x catalysts using small-grain Beta supporting FeO x nanoparticles as the core and tunable CeO 2 thin film thickness as sheaths were designed and controllably synthesized. Their catalytic performances were tested for selective catalytic reduction of NO x with NH 3 (NH 3 -SCR). It was found that CeO 2 shell thickness plays an important role in influencing the acidity and redox properties of the catalysts. Fe-Beta at CeO 2 core-shell catalysts exhibit excellent resistance to H 2 O and SO 2 and high NO x conversion (above 90%) in the wide temperature range (225-565°C). The kinetics result indicates that the coating of CeO 2 shell significantly increases the pore diffusion resistance of Fe-Beta at CeO 2 catalysts. Furthermore, in situ DRIFT results reveal that CeO 2 shell can promote the formation of NO 2 and cis- N2O2- species. But too thick CeO 2 shell (~20 nm) would result in the formation of inactive nitrate species, and thereby lead to a decrease of high-temperature activity of the catalysts. 2017 Journal Article http://hdl.handle.net/20.500.11937/54266 10.1002/aic.15743 John Wiley & Sons, Inc. unknown |
| spellingShingle | Liu, J. Liu, Jian Zhao, Z. Wei, Y. Song, W. Fe-Beta@CeO2 core-shell catalyst with tunable shell thickness for selective catalytic reduction of NOx with NH3 |
| title | Fe-Beta@CeO2 core-shell catalyst with tunable shell thickness for selective catalytic reduction of NOx with NH3 |
| title_full | Fe-Beta@CeO2 core-shell catalyst with tunable shell thickness for selective catalytic reduction of NOx with NH3 |
| title_fullStr | Fe-Beta@CeO2 core-shell catalyst with tunable shell thickness for selective catalytic reduction of NOx with NH3 |
| title_full_unstemmed | Fe-Beta@CeO2 core-shell catalyst with tunable shell thickness for selective catalytic reduction of NOx with NH3 |
| title_short | Fe-Beta@CeO2 core-shell catalyst with tunable shell thickness for selective catalytic reduction of NOx with NH3 |
| title_sort | fe-beta@ceo2 core-shell catalyst with tunable shell thickness for selective catalytic reduction of nox with nh3 |
| url | http://hdl.handle.net/20.500.11937/54266 |