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    Turning a Methanation Co Catalyst into an In–Co Methanol Producer

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    Bavykina_et_al.pdf
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    Type
    Article
    Authors
    Bavykina, Anastasiya
    Yarulina, Irina
    Al Abdulghani, Abdullah cc
    Gevers, Lieven
    Hedhili, Mohamed N. cc
    Miao, Xiaohe
    Galilea, Adrian cc
    Pustovarenko, Alexey
    Dikhtiarenko, Alla
    Cadiau, Amandine cc
    Aguilar-Tapia, Antonio
    Hazemann, Jean-Louis
    Kozlov, Sergey
    Oud-Chikh, Samy
    Cavallo, Luigi cc
    Gascon, Jorge cc
    KAUST Department
    Advanced Membranes & Porous Materials Center
    Advanced Membranes and Porous Materials Research Center
    Biological and Environmental Sciences and Engineering (BESE) Division
    Chemical Engineering Program
    Chemical Science
    Chemical Science Program
    Chemical and Biological Engineering
    Imaging & Characterization Laboratory
    Imaging and Characterization Core Lab
    KAUST Catalysis Center
    KAUST Catalysis Center (KCC)
    Physical Characterization
    Physical Science and Engineering (PSE) Division
    Surface Science
    Date
    2019-07-05
    Embargo End Date
    2020-07-05
    Permanent link to this record
    http://hdl.handle.net/10754/656006
    
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    Abstract
    The direct hydrogenation of CO2 to methanol using hydrogen is regarded as a potential technology to reduce greenhouse gas emissions and the dependence on fossil fuels. For this technology to become feasible, highly selective and productive catalysts that can operate under a wide range of reaction conditions near thermodynamic conversion are required. Here we combine a CO-producing In oxide catalyst with a methane-producing Co catalyst to obtain an In/Co catalyst for CO2 reduction to methanol. Density functional (DFT) simulations demonstrate that the charge transfer between the Co support and the In oxide film leads to enrichment of the surface of indium oxide with O vacancies, which serve as active sites for selective conversion of CO2 to methanol. Moreover, our simulations suggest that CO2 reduction on Co-supported In2O3–x films will preferentially yield methanol, rather than CO and methane. As a result, the prepared In@Co catalysts produce methanol from CO2 with high selectivity (>80%) and productivity (0.86 gCH3OH gcatalyst–1 h–1) at conversion levels close to thermodynamic equilibrium, even at temperatures as high as 300 °C and at moderate pressures (50 bar).
    Citation
    Bavykina, A., Yarulina, I., Al Abdulghani, A. J., Gevers, L., Hedhili, M. N., Miao, X., … Gascon, J. (2019). Turning a Methanation Co Catalyst into an In–Co Methanol Producer. ACS Catalysis, 9(8), 6910–6918. doi:10.1021/acscatal.9b01638
    Sponsors
    The authors gratefully acknowledge the European Synchrotron Radiation Facility (Grenoble, France) for provision of beamtime (CH-5572) for XAS experiments carried out on the CRG FAME UHD beamline (BM30) and support of their staff. The FAME-UHD project is financially supported by the French large loan EquipEx (EcoX, ANR-10-EQPX-27-01), the CEA-CNRS CRG consortium and the INSU CNRS Institute.
    Publisher
    American Chemical Society (ACS)
    Journal
    ACS Catalysis
    DOI
    10.1021/acscatal.9b01638
    Additional Links
    http://pubs.acs.org/doi/10.1021/acscatal.9b01638
    ae974a485f413a2113503eed53cd6c53
    10.1021/acscatal.9b01638
    Scopus Count
    Collections
    Articles; Biological and Environmental Science and Engineering (BESE) Division; Advanced Membranes and Porous Materials Research Center; Imaging and Characterization Core Lab; Physical Science and Engineering (PSE) Division; Chemical Science Program; Chemical Engineering Program; KAUST Catalysis Center (KCC)

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