| Reduction of NO by CO using Pd-CeTb and Pd-CeZr catalysts supported on SiO2 and La2O3-Al2O3 |
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| 作者姓名： | Victor Ferrer Dora Finol Roger Solano Alexander Moront Miguel Ramos |
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| 作者单位： | Instituto de Superficies y Catálisis, Facultad de Ingeniería, Universidad del Zulia, Maracaibo 4003A, Venezuela;Instituto de Superficies y Catálisis, Facultad de Ingeniería, Universidad del Zulia, Maracaibo 4003A, Venezuela;Instituto de Superficies y Catálisis, Facultad de Ingeniería, Universidad del Zulia, Maracaibo 4003A, Venezuela;Instituto de Superficies y Catálisis, Facultad de Ingeniería, Universidad del Zulia, Maracaibo 4003A, Venezuela;Instituto Zuliano de Investigaciones Tecnológicas, km 15 carretera Vía a la Cañada, Apartado 331, Venezuela |
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| 基金项目： | This research was partially supported by the Consejo de Desarrollo Científico y Humanístico of La Universidad del Zulia (CONDES-LUZ CC-0090-12) and Fondo Nacional de Ciencia, Tecnología e Innovación (FONACIT N° 2011001345). We would like to express our gratitude to engineers Angeli Barroso and Jean Bracho for the TPR analysis. |
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| 摘 要： | The catalytic activity of Pd catalysts supported on Ce0.73Tb0.27Ox/SiO2, Ce0.6Zr0.4Ox/SiO2, Ce0.73Tb0.27Ox/La2O3-Al2O3 and Ce0.6Zr0.4Ox/La2O3-Al2O3 was studied using the reduction of NO by CO. The catalysts were characterized by X-ray fluorescence, surface area, X-ray diffraction, temperature-programmed reduction, CO chemisorption and oxygen storage capacity. Temperature-programmed reduction results indicated that Tb or Zr incorporation improves the reducibility and oxygen storage capacity. CO chemisorption data suggested the presence of large PdO particles due to the low CO/Pd ratio. No significant differences were obtained in light off temperatures (TLight off) for all Pd catalysts and the most active was 1.5%Pd/Ce0.6Zr0.4Ox/SiO2.
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| 关 键 词： | Mixed oxides OSC Reduction of NO by CO Three way catalysts |
| 收稿时间： | 2/5/2014 12:00:00 AM |
| 修稿时间： | 5/5/2014 12:00:00 AM |
Reduction of NO by CO using Pd-CeTb and Pd-CeZr catalysts supported on SiO2 and La2O3-Al2O3 |
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| Victor Ferrer,Dora Finol,Roger Solano,Alexander Moront,Miguel Ramos.Reduction of NO by CO using Pd-CeTb and Pd-CeZr catalysts supported on SiO2 and La2O3-Al2O3[J].Journal of Environmental Sciences |
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| Authors: | Victor Ferrer Dora Finol Roger Solano Alexander Moronta and Miguel Ramos |
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| Institution: | Instituto de Superficies y Catálisis, Facultad de Ingeniería, Universidad del Zulia, Maracaibo 4003A, Venezuela;Instituto de Superficies y Catálisis, Facultad de Ingeniería, Universidad del Zulia, Maracaibo 4003A, Venezuela;Instituto de Superficies y Catálisis, Facultad de Ingeniería, Universidad del Zulia, Maracaibo 4003A, Venezuela;Instituto de Superficies y Catálisis, Facultad de Ingeniería, Universidad del Zulia, Maracaibo 4003A, Venezuela;Instituto Zuliano de Investigaciones Tecnológicas, km 15 carretera Vía a la Cañada, Apartado 331, Venezuela |
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| Abstract: | The catalytic activity of Pd catalysts supported on Ce0.73Tb0.27Ox/SiO2, Ce0.6Zr0.4Ox/SiO2, Ce0.73Tb0.27Ox/La2O3-Al2O3 and Ce0.6Zr0.4Ox/La2O3-Al2O3 was studied using the reduction of NO by CO. The catalysts were characterized by X-ray fluorescence, surface area, X-ray diffraction, temperature-programmed reduction, CO chemisorption and oxygen storage capacity. Temperature-programmed reduction results indicated that Tb or Zr incorporation improves the reducibility and oxygen storage capacity. CO chemisorption data suggested the presence of large PdO particles due to the low CO/Pd ratio. No significant differences were obtained in light off temperatures (TLight off) for all Pd catalysts and the most active was 1.5%Pd/Ce0.6Zr0.4Ox/SiO2. |
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| Keywords: | Mixed oxides OSC Reduction of NO by CO Three way catalysts |
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