Methane Dry Reforming over Ni/NiO Supported on Ce-, Zr-, and Al-Modified Y<sub>2</sub>O<sub>3</sub> for Hydrogen Production
In this work, Ce, Zr, and Al are used to promote Y<sub>2</sub>O<sub>3</sub> as supports for Ni/NiO, with the expectation to obtain more efficient catalysts for DRM reaction. XRD and Raman results have testified that all the three cations have been doped into the lattice of Y&...
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MDPI AG
2023-02-01
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| Series: | Catalysts |
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| Online Access: | https://www.mdpi.com/2073-4344/13/2/430 |
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| author | Zijian Chen Lei Mao Xiuzhong Fang Xianglan Xu Junwei Xu Xiang Wang |
| author_facet | Zijian Chen Lei Mao Xiuzhong Fang Xianglan Xu Junwei Xu Xiang Wang |
| author_sort | Zijian Chen |
| collection | DOAJ |
| description | In this work, Ce, Zr, and Al are used to promote Y<sub>2</sub>O<sub>3</sub> as supports for Ni/NiO, with the expectation to obtain more efficient catalysts for DRM reaction. XRD and Raman results have testified that all the three cations have been doped into the lattice of Y<sub>2</sub>O<sub>3</sub> to form a solid solution structure, thus obtaining supports with decreased crystallinity and improved surface areas. As a result, all the modified catalysts display evidently improved reaction performance. The Ni–support interaction of the modified catalysts is enhanced in comparison with the unmodified catalyst, thus having improved Ni dispersion. Moreover, the modified catalysts have improved alkalinity, which is beneficial to activate CO<sub>2</sub> and enhance the activity. In addition, it is found that all the modified catalysts possess a richer amount of surface active oxygen species (O<sub>2</sub><sup>δ−</sup> and O<sub>2</sub><sup>−</sup>), which is critical to eliminate carbon depositions. It is believed that the interaction of these factors is responsible for the enhanced DRM performance of the modified catalysts. In situ DRIFTS results have confirmed that the addition of the secondary metals can improve the DRM activity of the catalyst by accelerating the conversion of formate intermediate species. |
| first_indexed | 2024-03-11T09:01:09Z |
| format | Article |
| id | doaj.art-ab1fcdfcb51844fb8543fb4bbef9afae |
| institution | Directory Open Access Journal |
| issn | 2073-4344 |
| language | English |
| last_indexed | 2024-03-11T09:01:09Z |
| publishDate | 2023-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Catalysts |
| spelling | doaj.art-ab1fcdfcb51844fb8543fb4bbef9afae2023-11-16T19:43:03ZengMDPI AGCatalysts2073-43442023-02-0113243010.3390/catal13020430Methane Dry Reforming over Ni/NiO Supported on Ce-, Zr-, and Al-Modified Y<sub>2</sub>O<sub>3</sub> for Hydrogen ProductionZijian Chen0Lei Mao1Xiuzhong Fang2Xianglan Xu3Junwei Xu4Xiang Wang5Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, ChinaKey Laboratory of Jiangxi Province for Environment and Energy Catalysis, School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, ChinaKey Laboratory of Jiangxi Province for Environment and Energy Catalysis, School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, ChinaKey Laboratory of Jiangxi Province for Environment and Energy Catalysis, School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, ChinaKey Laboratory of Jiangxi Province for Environment and Energy Catalysis, School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, ChinaKey Laboratory of Jiangxi Province for Environment and Energy Catalysis, School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, ChinaIn this work, Ce, Zr, and Al are used to promote Y<sub>2</sub>O<sub>3</sub> as supports for Ni/NiO, with the expectation to obtain more efficient catalysts for DRM reaction. XRD and Raman results have testified that all the three cations have been doped into the lattice of Y<sub>2</sub>O<sub>3</sub> to form a solid solution structure, thus obtaining supports with decreased crystallinity and improved surface areas. As a result, all the modified catalysts display evidently improved reaction performance. The Ni–support interaction of the modified catalysts is enhanced in comparison with the unmodified catalyst, thus having improved Ni dispersion. Moreover, the modified catalysts have improved alkalinity, which is beneficial to activate CO<sub>2</sub> and enhance the activity. In addition, it is found that all the modified catalysts possess a richer amount of surface active oxygen species (O<sub>2</sub><sup>δ−</sup> and O<sub>2</sub><sup>−</sup>), which is critical to eliminate carbon depositions. It is believed that the interaction of these factors is responsible for the enhanced DRM performance of the modified catalysts. In situ DRIFTS results have confirmed that the addition of the secondary metals can improve the DRM activity of the catalyst by accelerating the conversion of formate intermediate species.https://www.mdpi.com/2073-4344/13/2/430dry reforming of methaneY<sub>2</sub>O<sub>3</sub> supportsecondary metal dopingcoking resistancesurface active oxygen speciessurface alkaline sites |
| spellingShingle | Zijian Chen Lei Mao Xiuzhong Fang Xianglan Xu Junwei Xu Xiang Wang Methane Dry Reforming over Ni/NiO Supported on Ce-, Zr-, and Al-Modified Y<sub>2</sub>O<sub>3</sub> for Hydrogen Production Catalysts dry reforming of methane Y<sub>2</sub>O<sub>3</sub> support secondary metal doping coking resistance surface active oxygen species surface alkaline sites |
| title | Methane Dry Reforming over Ni/NiO Supported on Ce-, Zr-, and Al-Modified Y<sub>2</sub>O<sub>3</sub> for Hydrogen Production |
| title_full | Methane Dry Reforming over Ni/NiO Supported on Ce-, Zr-, and Al-Modified Y<sub>2</sub>O<sub>3</sub> for Hydrogen Production |
| title_fullStr | Methane Dry Reforming over Ni/NiO Supported on Ce-, Zr-, and Al-Modified Y<sub>2</sub>O<sub>3</sub> for Hydrogen Production |
| title_full_unstemmed | Methane Dry Reforming over Ni/NiO Supported on Ce-, Zr-, and Al-Modified Y<sub>2</sub>O<sub>3</sub> for Hydrogen Production |
| title_short | Methane Dry Reforming over Ni/NiO Supported on Ce-, Zr-, and Al-Modified Y<sub>2</sub>O<sub>3</sub> for Hydrogen Production |
| title_sort | methane dry reforming over ni nio supported on ce zr and al modified y sub 2 sub o sub 3 sub for hydrogen production |
| topic | dry reforming of methane Y<sub>2</sub>O<sub>3</sub> support secondary metal doping coking resistance surface active oxygen species surface alkaline sites |
| url | https://www.mdpi.com/2073-4344/13/2/430 |
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