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Registro Completo |
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
19/06/2024 |
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Data da última atualização: |
31/07/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
PATRICIO, N. B.; CARDOSO, J. C.; ESCOTE, M. T.; LANFREDI, A. J. C.; DATYE, A.; PHAM, H.; OLIVEIRA, C. R. de; FONSECA, F. C.; SANTIAGO, E. I. |
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Afiliação: |
NUCLEAR AND ENERGY RESEARCH INSTITUTE, IPEN-CNEN; NUCLEAR AND ENERGY RESEARCH INSTITUTE, IPEN-CNEN; UFMS, FEDERAL UNIVERSITY OF MATO GROSSO DO SUL; CECS, FEDERAL UNIVERSITY OF ABC; UNIVERSITY OF NEW MEXICO; UNIVERSITY OF NEW MEXICO; CAUE RIBEIRO DE OLIVEIRA, CNPDIA; NUCLEAR AND ENERGY RESEARCH INSTITUTE, IPEN-CNEN; NUCLEAR AND ENERGY RESEARCH INSTITUTE, IPEN-CNEN. |
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Título: |
Assembling bifunctional ceria-zirconia electrocatalyst for efficient electrochemical conversion of methane at room temperature. |
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Ano de publicação: |
2024 |
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Fonte/Imprenta: |
Chemical Engineering Journal, v. 488, 150951, 2024. |
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Páginas: |
1 - 10 |
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ISSN: |
1385-8947 |
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DOI: |
https://doi.org/10.1016/j.cej.2024.150951 |
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Idioma: |
Inglês |
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Conteúdo: |
ABSTRACT The electrochemical conversion of methane to C2 compounds at room temperature is reported using CeO2-ZrO2 electrocatalysts. The mixed oxide electrocatalysts produced methanol, ethanol, and acetone, along with traces of acetaldehyde and isopropanol, under a polarization of 1.2 V with ~ 50 % Faradaic efficiency. Detailed characterizaing on the assembling configuration of the electrocatalyst. Samples with separated phases and limited solid solution formation showed the highest electrochemical activity, indicating that an optimal assembly of ceria and zirconia was crucial to achieving efficient conversion with high Faradaic efficiency and selectivity. Such high electrochemical activity observed for the phase separated CeO2-ZrO2 electrocatalyst suggests that a synergic effect between ceria and zirconia is required for the critical reaction steps, such as the activation and partial oxidation of methane. The experimental results point to credible routes to efficiently convert methane into valuable chemicals in mild conditions. |
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Palavras-Chave: |
Bifunctional catalyst; Ceria-zirconia; Electrocatalysts; Methane conversion. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01965naa a2200301 a 4500
001 2164961
005 2024-07-31
008 2024 bl uuuu u00u1 u #d
022 $a1385-8947
024 7 $ahttps://doi.org/10.1016/j.cej.2024.150951$2DOI
100 1 $aPATRICIO, N. B.
245 $aAssembling bifunctional ceria-zirconia electrocatalyst for efficient electrochemical conversion of methane at room temperature.$h[electronic resource]
260 $c2024
300 $a1 - 10
520 $aABSTRACT The electrochemical conversion of methane to C2 compounds at room temperature is reported using CeO2-ZrO2 electrocatalysts. The mixed oxide electrocatalysts produced methanol, ethanol, and acetone, along with traces of acetaldehyde and isopropanol, under a polarization of 1.2 V with ~ 50 % Faradaic efficiency. Detailed characterizaing on the assembling configuration of the electrocatalyst. Samples with separated phases and limited solid solution formation showed the highest electrochemical activity, indicating that an optimal assembly of ceria and zirconia was crucial to achieving efficient conversion with high Faradaic efficiency and selectivity. Such high electrochemical activity observed for the phase separated CeO2-ZrO2 electrocatalyst suggests that a synergic effect between ceria and zirconia is required for the critical reaction steps, such as the activation and partial oxidation of methane. The experimental results point to credible routes to efficiently convert methane into valuable chemicals in mild conditions.
653 $aBifunctional catalyst
653 $aCeria-zirconia
653 $aElectrocatalysts
653 $aMethane conversion
700 1 $aCARDOSO, J. C.
700 1 $aESCOTE, M. T.
700 1 $aLANFREDI, A. J. C.
700 1 $aDATYE, A.
700 1 $aPHAM, H.
700 1 $aOLIVEIRA, C. R. de
700 1 $aFONSECA, F. C.
700 1 $aSANTIAGO, E. I.
773 $tChemical Engineering Journal$gv. 488, 150951, 2024.
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Registro original: |
Embrapa Instrumentação (CNPDIA) |
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