Articles producció científica> Enginyeria Química

Dimethyl carbonate synthesis from CO2 and methanol over CeO2: elucidating the surface intermediates and oxygen vacancy-assisted reaction mechanism

  • Dades identificatives

    Identificador: imarina:9381248
    Handle: https://hdl.handle.net/20.500.11797/imarina9381248
    Autors:
    Stoian DSugiyama TBansode AMedina Fvan Beek WHasegawa JYNakayama AUrakawa A
    Resum:
    Surface intermediate species and oxygen vacancy-assisted mechanism over CeO2 catalyst in the direct dimethyl carbonate (DMC) synthesis from carbon dioxide and methanol are suggested by means of transient spectroscopic methodologies in conjunction with multivariate spectral analysis. How the two reactants, i.e. CO2 and methanol, interact with the CeO2 surface and how they form decisive surface intermediates leading to DMC are unraveled by DFT-based molecular dynamics simulation by precise statistical sampling of various configurations of surface states and intermediates. The atomistic simulations and uncovered stability of different intermediate states perfectly explain the unique DMC formation profile experimentally observed upon transient operations, strongly supporting the proposed oxygen vacancy-assisted reaction mechanism.

  • Altres:

    Autor segons l'article: Stoian D; Sugiyama T; Bansode A; Medina F; van Beek W; Hasegawa JY; Nakayama A; Urakawa A
    Departament: Enginyeria Química
    Autor/s de la URV: Medina Cabello, Francisco / STOIAN, DRAGOS CONSTANTIN
    Resum: Surface intermediate species and oxygen vacancy-assisted mechanism over CeO2 catalyst in the direct dimethyl carbonate (DMC) synthesis from carbon dioxide and methanol are suggested by means of transient spectroscopic methodologies in conjunction with multivariate spectral analysis. How the two reactants, i.e. CO2 and methanol, interact with the CeO2 surface and how they form decisive surface intermediates leading to DMC are unraveled by DFT-based molecular dynamics simulation by precise statistical sampling of various configurations of surface states and intermediates. The atomistic simulations and uncovered stability of different intermediate states perfectly explain the unique DMC formation profile experimentally observed upon transient operations, strongly supporting the proposed oxygen vacancy-assisted reaction mechanism.
    Àrees temàtiques: Astronomia / física Chemistry (all) Chemistry (miscellaneous) Chemistry, multidisciplinary Ciências biológicas i Ciências biológicas iii Farmacia General chemistry Interdisciplinar Materiais Química
    Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
    Adreça de correu electrònic de l'autor: francesc.medina@urv.cat
    Identificador de l'autor: 0000-0002-3111-1542
    Data d'alta del registre: 2024-10-12
    Versió de l'article dipositat: info:eu-repo/semantics/publishedVersion
    Enllaç font original: https://pubs.rsc.org/en/content/articlelanding/2023/sc/d3sc04466a
    Referència a l'article segons font original: Chemical Science. 14 (47): 13908-13914
    Referència de l'ítem segons les normes APA: Stoian D; Sugiyama T; Bansode A; Medina F; van Beek W; Hasegawa JY; Nakayama A; Urakawa A (2023). Dimethyl carbonate synthesis from CO2 and methanol over CeO2: elucidating the surface intermediates and oxygen vacancy-assisted reaction mechanism. Chemical Science, 14(47), 13908-13914. DOI: 10.1039/d3sc04466a
    URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
    DOI de l'article: 10.1039/d3sc04466a
    Entitat: Universitat Rovira i Virgili
    Any de publicació de la revista: 2023
    Tipus de publicació: Journal Publications

  • Paraules clau:

    Chemistry (Miscellaneous),Chemistry, Multidisciplinary
    Astronomia / física
    Chemistry (all)
    Chemistry (miscellaneous)
    Chemistry, multidisciplinary
    Ciências biológicas i
    Ciências biológicas iii
    Farmacia
    General chemistry
    Interdisciplinar
    Materiais
    Química

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