Development of La Doped Ni/CeO<sub>2</sub> for CH<sub>4</sub>/CO<sub>2</sub> Reforming
Methane dry reforming (MDR) allows the transformation of carbon dioxide and methane, the two main greenhouse gases, into syngas. Given the high endothermicity of the process, it is necessary to produce a catalytic system that is very active, selective and resistant to coking deactivation; this work...
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MDPI AG
2018-11-01
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| Online Access: | https://www.mdpi.com/2311-5629/4/4/60 |
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| author | Federica Menegazzo Cristina Pizzolitto Elena Ghedini Alessandro Di Michele Giuseppe Cruciani Michela Signoretto |
| author_facet | Federica Menegazzo Cristina Pizzolitto Elena Ghedini Alessandro Di Michele Giuseppe Cruciani Michela Signoretto |
| author_sort | Federica Menegazzo |
| collection | DOAJ |
| description | Methane dry reforming (MDR) allows the transformation of carbon dioxide and methane, the two main greenhouse gases, into syngas. Given the high endothermicity of the process, it is necessary to produce a catalytic system that is very active, selective and resistant to coking deactivation; this work focuses on the development of a heterogeneous catalyst based on nickel supported on cerium oxide. Several strategies of synthesis of the catalysts were studied with particular attention to the lanthanum addition methodology. Both supports and catalysts, fresh and used, were deeply characterized by different techniques (N<sub>2</sub> physisorption, TPR, XRD, SEM). The effect of temperature on activity and selectivity of the different catalysts was also studied. A positive effect of lanthanum addition is strongly related to the synthetic methodology. Incipient wetness impregnation of lanthanum precursor on an already calcined ceria has led to the best catalytic activity. This behaviour is due to a more effective interaction between nickel and the support, which results in a higher dispersion of the active phase. The structural modifications have led to an improvement of the redox pump of the ceria, reducing the formation of coke during the reaction and improving the stability on time on stream. |
| first_indexed | 2024-04-14T07:56:41Z |
| format | Article |
| id | doaj.art-59bff8ba51ab48f2a8de73b4dc160b06 |
| institution | Directory Open Access Journal |
| issn | 2311-5629 |
| language | English |
| last_indexed | 2024-04-14T07:56:41Z |
| publishDate | 2018-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | C |
| spelling | doaj.art-59bff8ba51ab48f2a8de73b4dc160b062022-12-22T02:05:01ZengMDPI AGC2311-56292018-11-01446010.3390/c4040060c4040060Development of La Doped Ni/CeO<sub>2</sub> for CH<sub>4</sub>/CO<sub>2</sub> ReformingFederica Menegazzo0Cristina Pizzolitto1Elena Ghedini2Alessandro Di Michele3Giuseppe Cruciani4Michela Signoretto5CATMAT Lab, Department of Molecular Sciences and Nanosystems, Ca’ Foscari University Venice and INSTM-RU Ve, Via Torino 155, 30172 Venezia Mestre, ItalyCATMAT Lab, Department of Molecular Sciences and Nanosystems, Ca’ Foscari University Venice and INSTM-RU Ve, Via Torino 155, 30172 Venezia Mestre, ItalyCATMAT Lab, Department of Molecular Sciences and Nanosystems, Ca’ Foscari University Venice and INSTM-RU Ve, Via Torino 155, 30172 Venezia Mestre, ItalyDepartment of Physics and Geology, University of Perugia, Via Pascoli, 06123 Perugia, ItalyDepartment of Physics and Earth Science, University of Ferrara, Via Saragat 1, 44122 Ferrara, ItalyCATMAT Lab, Department of Molecular Sciences and Nanosystems, Ca’ Foscari University Venice and INSTM-RU Ve, Via Torino 155, 30172 Venezia Mestre, ItalyMethane dry reforming (MDR) allows the transformation of carbon dioxide and methane, the two main greenhouse gases, into syngas. Given the high endothermicity of the process, it is necessary to produce a catalytic system that is very active, selective and resistant to coking deactivation; this work focuses on the development of a heterogeneous catalyst based on nickel supported on cerium oxide. Several strategies of synthesis of the catalysts were studied with particular attention to the lanthanum addition methodology. Both supports and catalysts, fresh and used, were deeply characterized by different techniques (N<sub>2</sub> physisorption, TPR, XRD, SEM). The effect of temperature on activity and selectivity of the different catalysts was also studied. A positive effect of lanthanum addition is strongly related to the synthetic methodology. Incipient wetness impregnation of lanthanum precursor on an already calcined ceria has led to the best catalytic activity. This behaviour is due to a more effective interaction between nickel and the support, which results in a higher dispersion of the active phase. The structural modifications have led to an improvement of the redox pump of the ceria, reducing the formation of coke during the reaction and improving the stability on time on stream.https://www.mdpi.com/2311-5629/4/4/60dry reformingCO<sub>2</sub> reformingNi/CeO<sub>2</sub>lanthanumLa<sub>2</sub>O<sub>3</sub>SMSIceriasyngas |
| spellingShingle | Federica Menegazzo Cristina Pizzolitto Elena Ghedini Alessandro Di Michele Giuseppe Cruciani Michela Signoretto Development of La Doped Ni/CeO<sub>2</sub> for CH<sub>4</sub>/CO<sub>2</sub> Reforming C dry reforming CO<sub>2</sub> reforming Ni/CeO<sub>2</sub> lanthanum La<sub>2</sub>O<sub>3</sub> SMSI ceria syngas |
| title | Development of La Doped Ni/CeO<sub>2</sub> for CH<sub>4</sub>/CO<sub>2</sub> Reforming |
| title_full | Development of La Doped Ni/CeO<sub>2</sub> for CH<sub>4</sub>/CO<sub>2</sub> Reforming |
| title_fullStr | Development of La Doped Ni/CeO<sub>2</sub> for CH<sub>4</sub>/CO<sub>2</sub> Reforming |
| title_full_unstemmed | Development of La Doped Ni/CeO<sub>2</sub> for CH<sub>4</sub>/CO<sub>2</sub> Reforming |
| title_short | Development of La Doped Ni/CeO<sub>2</sub> for CH<sub>4</sub>/CO<sub>2</sub> Reforming |
| title_sort | development of la doped ni ceo sub 2 sub for ch sub 4 sub co sub 2 sub reforming |
| topic | dry reforming CO<sub>2</sub> reforming Ni/CeO<sub>2</sub> lanthanum La<sub>2</sub>O<sub>3</sub> SMSI ceria syngas |
| url | https://www.mdpi.com/2311-5629/4/4/60 |
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