Effect of zirconium on the structure and activity of Cu/Ti 1-xZr xO 2 catalysts for selective catalytic reduction of NO with C 3H 6
Mixed oxides of 5 wt% Cu/Ti 1-xZr xO 2 (x = 0, 0.3, 0.5, 0.7, 1.0) were synthesized using the impregnation-urea coprecipitation method and the catalysts prepared were assessed for the selective catalyst reduction (SCR) of NO with C 3H 6. A significant improvement of the catalytic activity was found...
| Main Authors: | , , , |
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| Format: | Journal Article |
| Published: |
2012
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| Online Access: | http://hdl.handle.net/20.500.11937/27847 |
| _version_ | 1848752376962351104 |
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| author | Liu, J. Li, Xin Yong Zhao, Q. Zhang, D. |
| author_facet | Liu, J. Li, Xin Yong Zhao, Q. Zhang, D. |
| author_sort | Liu, J. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Mixed oxides of 5 wt% Cu/Ti 1-xZr xO 2 (x = 0, 0.3, 0.5, 0.7, 1.0) were synthesized using the impregnation-urea coprecipitation method and the catalysts prepared were assessed for the selective catalyst reduction (SCR) of NO with C 3H 6. A significant improvement of the catalytic activity was found over the Zr-doped catalysts with the highest N 2 yield of 67.2% achieved over Cu/Ti 0.7Zr 0.3O 2 at 275 °C. Based on the characterizations using BET, ICP, XRD, H 2-TPR, FTIR of adsorbed pyridine, XPS, and TEM, the enhanced SCR activity of Cu/Ti 0.7Zr 0.3O 2 was attributed to the large surface area, appropriate structural disorder, abundant Lewis acid sites, increase in the amount of active sites, and greater lattice oxygen mobility. The specific physico-chemical properties were caused by the distortion of the crystal structure and the change of the electron charge density (ECD) due to the introduction of Zr species. The generation of mixed Ti-O-Zr bond was beneficial for the adsorption of NO and the oxidation of NO to NO 2, which favored the SCR reaction. © 2012 The Royal Society of Chemistry. |
| first_indexed | 2025-11-14T08:07:39Z |
| format | Journal Article |
| id | curtin-20.500.11937-27847 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:07:39Z |
| publishDate | 2012 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-278472017-09-13T15:11:17Z Effect of zirconium on the structure and activity of Cu/Ti 1-xZr xO 2 catalysts for selective catalytic reduction of NO with C 3H 6 Liu, J. Li, Xin Yong Zhao, Q. Zhang, D. Mixed oxides of 5 wt% Cu/Ti 1-xZr xO 2 (x = 0, 0.3, 0.5, 0.7, 1.0) were synthesized using the impregnation-urea coprecipitation method and the catalysts prepared were assessed for the selective catalyst reduction (SCR) of NO with C 3H 6. A significant improvement of the catalytic activity was found over the Zr-doped catalysts with the highest N 2 yield of 67.2% achieved over Cu/Ti 0.7Zr 0.3O 2 at 275 °C. Based on the characterizations using BET, ICP, XRD, H 2-TPR, FTIR of adsorbed pyridine, XPS, and TEM, the enhanced SCR activity of Cu/Ti 0.7Zr 0.3O 2 was attributed to the large surface area, appropriate structural disorder, abundant Lewis acid sites, increase in the amount of active sites, and greater lattice oxygen mobility. The specific physico-chemical properties were caused by the distortion of the crystal structure and the change of the electron charge density (ECD) due to the introduction of Zr species. The generation of mixed Ti-O-Zr bond was beneficial for the adsorption of NO and the oxidation of NO to NO 2, which favored the SCR reaction. © 2012 The Royal Society of Chemistry. 2012 Journal Article http://hdl.handle.net/20.500.11937/27847 10.1039/c2cy20121f restricted |
| spellingShingle | Liu, J. Li, Xin Yong Zhao, Q. Zhang, D. Effect of zirconium on the structure and activity of Cu/Ti 1-xZr xO 2 catalysts for selective catalytic reduction of NO with C 3H 6 |
| title | Effect of zirconium on the structure and activity of Cu/Ti 1-xZr xO 2 catalysts for selective catalytic reduction of NO with C 3H 6 |
| title_full | Effect of zirconium on the structure and activity of Cu/Ti 1-xZr xO 2 catalysts for selective catalytic reduction of NO with C 3H 6 |
| title_fullStr | Effect of zirconium on the structure and activity of Cu/Ti 1-xZr xO 2 catalysts for selective catalytic reduction of NO with C 3H 6 |
| title_full_unstemmed | Effect of zirconium on the structure and activity of Cu/Ti 1-xZr xO 2 catalysts for selective catalytic reduction of NO with C 3H 6 |
| title_short | Effect of zirconium on the structure and activity of Cu/Ti 1-xZr xO 2 catalysts for selective catalytic reduction of NO with C 3H 6 |
| title_sort | effect of zirconium on the structure and activity of cu/ti 1-xzr xo 2 catalysts for selective catalytic reduction of no with c 3h 6 |
| url | http://hdl.handle.net/20.500.11937/27847 |