High Dispersion of CeO<sub>2</sub> on CeO<sub>2</sub>/MgO Prepared under Dry Conditions and Its Improved Redox Properties
Suppressing the usage of rare-earth elements is crucial for making the catalysts sustainable. Preparing CeO<sub>2</sub> nanoparticles is a common technique to reduce CeO<sub>2</sub> consumption, but such nanoparticles are prone to sinter or react with the supports when subjec...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-11-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/14/23/7922 |
| _version_ | 1797507874506670080 |
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| author | Kenji Taira Reiko Murao |
| author_facet | Kenji Taira Reiko Murao |
| author_sort | Kenji Taira |
| collection | DOAJ |
| description | Suppressing the usage of rare-earth elements is crucial for making the catalysts sustainable. Preparing CeO<sub>2</sub> nanoparticles is a common technique to reduce CeO<sub>2</sub> consumption, but such nanoparticles are prone to sinter or react with the supports when subjected to heat treatments. This study demonstrated that stable CeO<sub>2</sub> nanoparticles were deposited on MgO by the simple impregnation method. When CeO<sub>2</sub>/MgO was prepared under the dry atmosphere, the CeO<sub>2</sub> nanoparticles remained ~3 nm in diameter even after being heated at 800 °C, which is much smaller than ~5 nm of CeO<sub>2</sub>/MgO prepared under ambient air. Temperature-programmed reduction, temperature-programmed oxidation, X-ray photoelectron spectroscopy, and in situ X-ray diffraction studies showed that CeO<sub>2</sub>/MgO exhibited higher oxygen mobility when prepared under the dry atmosphere. Dry reforming reaction demonstrated that CeO<sub>2</sub>/MgO prepared under the dry atmosphere exhibited higher activity than that prepared under ambient air and pure CeO<sub>2</sub>. |
| first_indexed | 2024-03-10T04:54:39Z |
| format | Article |
| id | doaj.art-bf12207f955546cb9bcff7024a33d946 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T04:54:39Z |
| publishDate | 2021-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-bf12207f955546cb9bcff7024a33d9462023-11-23T02:19:53ZengMDPI AGEnergies1996-10732021-11-011423792210.3390/en14237922High Dispersion of CeO<sub>2</sub> on CeO<sub>2</sub>/MgO Prepared under Dry Conditions and Its Improved Redox PropertiesKenji Taira0Reiko Murao1Advanced Technology Research Laboratories, Nippon Steel Corporation, 20-1 Shintomi, Futtsu 293-8511, Chiba, JapanAdvanced Technology Research Laboratories, Nippon Steel Corporation, 20-1 Shintomi, Futtsu 293-8511, Chiba, JapanSuppressing the usage of rare-earth elements is crucial for making the catalysts sustainable. Preparing CeO<sub>2</sub> nanoparticles is a common technique to reduce CeO<sub>2</sub> consumption, but such nanoparticles are prone to sinter or react with the supports when subjected to heat treatments. This study demonstrated that stable CeO<sub>2</sub> nanoparticles were deposited on MgO by the simple impregnation method. When CeO<sub>2</sub>/MgO was prepared under the dry atmosphere, the CeO<sub>2</sub> nanoparticles remained ~3 nm in diameter even after being heated at 800 °C, which is much smaller than ~5 nm of CeO<sub>2</sub>/MgO prepared under ambient air. Temperature-programmed reduction, temperature-programmed oxidation, X-ray photoelectron spectroscopy, and in situ X-ray diffraction studies showed that CeO<sub>2</sub>/MgO exhibited higher oxygen mobility when prepared under the dry atmosphere. Dry reforming reaction demonstrated that CeO<sub>2</sub>/MgO prepared under the dry atmosphere exhibited higher activity than that prepared under ambient air and pure CeO<sub>2</sub>.https://www.mdpi.com/1996-1073/14/23/7922CeO<sub>2</sub>MgOdry reformingheterogeneous catalysisin situ XRD |
| spellingShingle | Kenji Taira Reiko Murao High Dispersion of CeO<sub>2</sub> on CeO<sub>2</sub>/MgO Prepared under Dry Conditions and Its Improved Redox Properties Energies CeO<sub>2</sub> MgO dry reforming heterogeneous catalysis in situ XRD |
| title | High Dispersion of CeO<sub>2</sub> on CeO<sub>2</sub>/MgO Prepared under Dry Conditions and Its Improved Redox Properties |
| title_full | High Dispersion of CeO<sub>2</sub> on CeO<sub>2</sub>/MgO Prepared under Dry Conditions and Its Improved Redox Properties |
| title_fullStr | High Dispersion of CeO<sub>2</sub> on CeO<sub>2</sub>/MgO Prepared under Dry Conditions and Its Improved Redox Properties |
| title_full_unstemmed | High Dispersion of CeO<sub>2</sub> on CeO<sub>2</sub>/MgO Prepared under Dry Conditions and Its Improved Redox Properties |
| title_short | High Dispersion of CeO<sub>2</sub> on CeO<sub>2</sub>/MgO Prepared under Dry Conditions and Its Improved Redox Properties |
| title_sort | high dispersion of ceo sub 2 sub on ceo sub 2 sub mgo prepared under dry conditions and its improved redox properties |
| topic | CeO<sub>2</sub> MgO dry reforming heterogeneous catalysis in situ XRD |
| url | https://www.mdpi.com/1996-1073/14/23/7922 |
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