Ru/Ce/Ni Metal Foams as Structured Catalysts for the Methanation of CO<sub>2</sub>
The development of highly conductive structured catalysts with enhanced mass- and heat-transfer features is required for the intensification of the strongly exothermic catalytic hydrogenation of CO<sub>2</sub> in which large temperature gradients should be avoided to prevent catalyst dea...
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MDPI AG
2020-12-01
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| Series: | Catalysts |
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| Online Access: | https://www.mdpi.com/2073-4344/11/1/13 |
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| author | Stefano Cimino Elisabetta Maria Cepollaro Luciana Lisi Stefano Fasolin Marco Musiani Lourdes Vázquez-Gómez |
| author_facet | Stefano Cimino Elisabetta Maria Cepollaro Luciana Lisi Stefano Fasolin Marco Musiani Lourdes Vázquez-Gómez |
| author_sort | Stefano Cimino |
| collection | DOAJ |
| description | The development of highly conductive structured catalysts with enhanced mass- and heat-transfer features is required for the intensification of the strongly exothermic catalytic hydrogenation of CO<sub>2</sub> in which large temperature gradients should be avoided to prevent catalyst deactivation and to control selectivity. Therefore, in this work we set out to investigate the preparation of novel structured catalysts obtained from a commercial open cell Ni foam with high pore density (75 ppi) onto which a CeO<sub>2</sub> layer was deposited via electroprecipitation, and, eventually, Ru was added by impregnation. Composite Ru/Ce/Ni foam catalysts, as well as simpler binary Ru/Ni and Ce/Ni catalysts were characterized by SEM-EDX, XRD, cyclic voltammetry, N<sub>2</sub> physisorption, H<sub>2</sub>-temperature programmed reduction (TPR), and their CO<sub>2</sub> methanation activity was assessed at atmospheric pressure in a fixed bed flow reactor via temperature programmed tests in the range from 200 to 450 °C. Thin porous CeO<sub>2</sub> layers, uniformly deposited on the struts of the Ni foams, produced active catalytic sites for the hydrogenation of CO<sub>2</sub> at the interface between the metal and the oxide. The methanation activity was further boosted by the dispersion of Ru within the pores of the CeO<sub>2</sub> layer, whereas the direct deposition of Ru on Ni, by either impregnation or pulsed electrodeposition methods, was much less effective. |
| first_indexed | 2024-03-10T13:47:08Z |
| format | Article |
| id | doaj.art-188aa8eb0c844dff99e0e144ed3494dc |
| institution | Directory Open Access Journal |
| issn | 2073-4344 |
| language | English |
| last_indexed | 2024-03-10T13:47:08Z |
| publishDate | 2020-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Catalysts |
| spelling | doaj.art-188aa8eb0c844dff99e0e144ed3494dc2023-11-21T02:28:05ZengMDPI AGCatalysts2073-43442020-12-011111310.3390/catal11010013Ru/Ce/Ni Metal Foams as Structured Catalysts for the Methanation of CO<sub>2</sub>Stefano Cimino0Elisabetta Maria Cepollaro1Luciana Lisi2Stefano Fasolin3Marco Musiani4Lourdes Vázquez-Gómez5Istituto di Scienze e Tecnologie per l’Energia e la Mobilità Sostenibili (STEMS), Consiglio Nazionale delle Ricerche (CNR), Via Guglielmo Marconi 4/10, 80125 Napoli, ItalyIstituto di Scienze e Tecnologie per l’Energia e la Mobilità Sostenibili (STEMS), Consiglio Nazionale delle Ricerche (CNR), Via Guglielmo Marconi 4/10, 80125 Napoli, ItalyIstituto di Scienze e Tecnologie per l’Energia e la Mobilità Sostenibili (STEMS), Consiglio Nazionale delle Ricerche (CNR), Via Guglielmo Marconi 4/10, 80125 Napoli, ItalyIstituto di Chimica della Materia Condensata e di Tecnologie per l’Energia (ICMATE), Consiglio Nazionale delle Ricerche (CNR), Corso Stati Uniti 4, 35127 Padova, ItalyIstituto di Chimica della Materia Condensata e di Tecnologie per l’Energia (ICMATE), Consiglio Nazionale delle Ricerche (CNR), Corso Stati Uniti 4, 35127 Padova, ItalyIstituto di Chimica della Materia Condensata e di Tecnologie per l’Energia (ICMATE), Consiglio Nazionale delle Ricerche (CNR), Corso Stati Uniti 4, 35127 Padova, ItalyThe development of highly conductive structured catalysts with enhanced mass- and heat-transfer features is required for the intensification of the strongly exothermic catalytic hydrogenation of CO<sub>2</sub> in which large temperature gradients should be avoided to prevent catalyst deactivation and to control selectivity. Therefore, in this work we set out to investigate the preparation of novel structured catalysts obtained from a commercial open cell Ni foam with high pore density (75 ppi) onto which a CeO<sub>2</sub> layer was deposited via electroprecipitation, and, eventually, Ru was added by impregnation. Composite Ru/Ce/Ni foam catalysts, as well as simpler binary Ru/Ni and Ce/Ni catalysts were characterized by SEM-EDX, XRD, cyclic voltammetry, N<sub>2</sub> physisorption, H<sub>2</sub>-temperature programmed reduction (TPR), and their CO<sub>2</sub> methanation activity was assessed at atmospheric pressure in a fixed bed flow reactor via temperature programmed tests in the range from 200 to 450 °C. Thin porous CeO<sub>2</sub> layers, uniformly deposited on the struts of the Ni foams, produced active catalytic sites for the hydrogenation of CO<sub>2</sub> at the interface between the metal and the oxide. The methanation activity was further boosted by the dispersion of Ru within the pores of the CeO<sub>2</sub> layer, whereas the direct deposition of Ru on Ni, by either impregnation or pulsed electrodeposition methods, was much less effective.https://www.mdpi.com/2073-4344/11/1/13CO<sub>2</sub> utilizationhydrogenationmethaneelectrodepositionelectroprecipitationruthenium |
| spellingShingle | Stefano Cimino Elisabetta Maria Cepollaro Luciana Lisi Stefano Fasolin Marco Musiani Lourdes Vázquez-Gómez Ru/Ce/Ni Metal Foams as Structured Catalysts for the Methanation of CO<sub>2</sub> Catalysts CO<sub>2</sub> utilization hydrogenation methane electrodeposition electroprecipitation ruthenium |
| title | Ru/Ce/Ni Metal Foams as Structured Catalysts for the Methanation of CO<sub>2</sub> |
| title_full | Ru/Ce/Ni Metal Foams as Structured Catalysts for the Methanation of CO<sub>2</sub> |
| title_fullStr | Ru/Ce/Ni Metal Foams as Structured Catalysts for the Methanation of CO<sub>2</sub> |
| title_full_unstemmed | Ru/Ce/Ni Metal Foams as Structured Catalysts for the Methanation of CO<sub>2</sub> |
| title_short | Ru/Ce/Ni Metal Foams as Structured Catalysts for the Methanation of CO<sub>2</sub> |
| title_sort | ru ce ni metal foams as structured catalysts for the methanation of co sub 2 sub |
| topic | CO<sub>2</sub> utilization hydrogenation methane electrodeposition electroprecipitation ruthenium |
| url | https://www.mdpi.com/2073-4344/11/1/13 |
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