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Thermocatalytic CO(2) Conversion over a Nickel-Loaded Ceria Nanostructured Catalyst: A NAP-XPS Study

Despite the increasing economic incentives and environmental advantages associated to their substitution, carbon-rich fossil fuels are expected to remain as the dominant worldwide source of energy through at least the next two decades and perhaps later. Therefore, both the control and reduction of C...

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Autores principales: Barroso-Bogeat, Adrián, Blanco, Ginesa, Pérez-Sagasti, Juan José, Escudero, Carlos, Pellegrin, Eric, Herrera, Facundo C., Pintado, José María
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7913549/
https://www.ncbi.nlm.nih.gov/pubmed/33546339
http://dx.doi.org/10.3390/ma14040711
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author Barroso-Bogeat, Adrián
Blanco, Ginesa
Pérez-Sagasti, Juan José
Escudero, Carlos
Pellegrin, Eric
Herrera, Facundo C.
Pintado, José María
author_facet Barroso-Bogeat, Adrián
Blanco, Ginesa
Pérez-Sagasti, Juan José
Escudero, Carlos
Pellegrin, Eric
Herrera, Facundo C.
Pintado, José María
author_sort Barroso-Bogeat, Adrián
collection PubMed
description Despite the increasing economic incentives and environmental advantages associated to their substitution, carbon-rich fossil fuels are expected to remain as the dominant worldwide source of energy through at least the next two decades and perhaps later. Therefore, both the control and reduction of CO(2) emissions have become environmental issues of major concern and big challenges for the international scientific community. Among the proposed strategies to achieve these goals, conversion of CO(2) by its reduction into high added value products, such as methane or syngas, has been widely agreed to be the most attractive from the environmental and economic points of view. In the present work, thermocatalytic reduction of CO(2) with H(2) was studied over a nanostructured ceria-supported nickel catalyst. Ceria nanocubes were employed as support, while the nickel phase was supported by means a surfactant-free controlled chemical precipitation method. The resulting nanocatalyst was characterized in terms of its physicochemical properties, with special attention paid to both surface basicity and reducibility. The nanocatalyst was studied during CO(2) reduction by means of Near Ambient Pressure X-ray Photoelectron Spectroscopy (NAP-XPS). Two different catalytic behaviors were observed depending on the reaction temperature. At low temperature, with both Ce and Ni in an oxidized state, CH(4) formation was observed, whereas at high temperature above 500 °C, the reverse water gas shift reaction became dominant, with CO and H(2)O being the main products. NAP-XPS was revealed as a powerful tool to study the behavior of this nanostructured catalyst under reaction conditions.
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spelling pubmed-79135492021-02-28 Thermocatalytic CO(2) Conversion over a Nickel-Loaded Ceria Nanostructured Catalyst: A NAP-XPS Study Barroso-Bogeat, Adrián Blanco, Ginesa Pérez-Sagasti, Juan José Escudero, Carlos Pellegrin, Eric Herrera, Facundo C. Pintado, José María Materials (Basel) Article Despite the increasing economic incentives and environmental advantages associated to their substitution, carbon-rich fossil fuels are expected to remain as the dominant worldwide source of energy through at least the next two decades and perhaps later. Therefore, both the control and reduction of CO(2) emissions have become environmental issues of major concern and big challenges for the international scientific community. Among the proposed strategies to achieve these goals, conversion of CO(2) by its reduction into high added value products, such as methane or syngas, has been widely agreed to be the most attractive from the environmental and economic points of view. In the present work, thermocatalytic reduction of CO(2) with H(2) was studied over a nanostructured ceria-supported nickel catalyst. Ceria nanocubes were employed as support, while the nickel phase was supported by means a surfactant-free controlled chemical precipitation method. The resulting nanocatalyst was characterized in terms of its physicochemical properties, with special attention paid to both surface basicity and reducibility. The nanocatalyst was studied during CO(2) reduction by means of Near Ambient Pressure X-ray Photoelectron Spectroscopy (NAP-XPS). Two different catalytic behaviors were observed depending on the reaction temperature. At low temperature, with both Ce and Ni in an oxidized state, CH(4) formation was observed, whereas at high temperature above 500 °C, the reverse water gas shift reaction became dominant, with CO and H(2)O being the main products. NAP-XPS was revealed as a powerful tool to study the behavior of this nanostructured catalyst under reaction conditions. MDPI 2021-02-03 /pmc/articles/PMC7913549/ /pubmed/33546339 http://dx.doi.org/10.3390/ma14040711 Text en © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Barroso-Bogeat, Adrián
Blanco, Ginesa
Pérez-Sagasti, Juan José
Escudero, Carlos
Pellegrin, Eric
Herrera, Facundo C.
Pintado, José María
Thermocatalytic CO(2) Conversion over a Nickel-Loaded Ceria Nanostructured Catalyst: A NAP-XPS Study
title Thermocatalytic CO(2) Conversion over a Nickel-Loaded Ceria Nanostructured Catalyst: A NAP-XPS Study
title_full Thermocatalytic CO(2) Conversion over a Nickel-Loaded Ceria Nanostructured Catalyst: A NAP-XPS Study
title_fullStr Thermocatalytic CO(2) Conversion over a Nickel-Loaded Ceria Nanostructured Catalyst: A NAP-XPS Study
title_full_unstemmed Thermocatalytic CO(2) Conversion over a Nickel-Loaded Ceria Nanostructured Catalyst: A NAP-XPS Study
title_short Thermocatalytic CO(2) Conversion over a Nickel-Loaded Ceria Nanostructured Catalyst: A NAP-XPS Study
title_sort thermocatalytic co(2) conversion over a nickel-loaded ceria nanostructured catalyst: a nap-xps study
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7913549/
https://www.ncbi.nlm.nih.gov/pubmed/33546339
http://dx.doi.org/10.3390/ma14040711
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