Thermocatalytic CO2 Conversion over a Nickel-Loaded Ceria Nanostructured Catalyst: A NAP-XPS Study
| العنوان: | Thermocatalytic CO2 Conversion over a Nickel-Loaded Ceria Nanostructured Catalyst: A NAP-XPS Study |
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| المؤلفون: | Adrián Barroso-Bogeat, Facundo C. Herrera, Carlos Escudero, José M. Pintado, Ginesa Blanco, Eric Pellegrin, Juan José Pérez-Sagasti |
| المساهمون: | Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica |
| المصدر: | Materials SEDICI (UNLP) Universidad Nacional de La Plata instacron:UNLP Volume 14 Issue 4 Materials 2021, 14(4), 711 RODIN. Repositorio de Objetos de Docencia e Investigación de la Universidad de Cádiz instname Materials, Vol 14, Iss 711, p 711 (2021) RODIN: Repositorio de Objetos de Docencia e Investigación de la Universidad de Cádiz Universidad de Cádiz |
| بيانات النشر: | MDPI, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | rare earth oxides, Materials science, CO2 hydrogenation, chemistry.chemical_element, 02 engineering and technology, Ceria nanocubes, 010402 general chemistry, Nnickel, lcsh:Technology, 01 natural sciences, Water-gas shift reaction, Methane, Article, Catalysis, chemistry.chemical_compound, nickel, X-ray photoelectron spectroscopy, ceria nanocubes, General Materials Science, lcsh:Microscopy, Rare earth oxides, lcsh:QC120-168.85, Near Ambient Pressure X-ray Photoelectron Spectroscopy (NAP-XPS), lcsh:QH201-278.5, lcsh:T, business.industry, Fossil fuel, Química, 021001 nanoscience & nanotechnology, 0104 chemical sciences, Nickel, chemistry, Chemical engineering, lcsh:TA1-2040, lcsh:Descriptive and experimental mechanics, lcsh:Electrical engineering. Electronics. Nuclear engineering, lcsh:Engineering (General). Civil engineering (General), 0210 nano-technology, business, lcsh:TK1-9971, Syngas, Ambient pressure |
| الوصف: | 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 CO2 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 CO2 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 CO2 with H2 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 CO2 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, CH4 formation was observed, whereas at high temperature above 500 °C, the reverse water gas shift reaction became dominant, with CO and H2O being the main products. NAP-XPS was revealed as a powerful tool to study the behavior of this nanostructured catalyst under reaction conditions. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 1996-1944 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::616c6963ea4d3fc0a1c38f541345b969Test http://europepmc.org/articles/PMC7913549Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....616c6963ea4d3fc0a1c38f541345b969 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 19961944 |
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