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    Screening and design of active metals on dendritic mesoporous Ce0.3Zr0.7O2 for efficient CO2 hydrogenation to methanol

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    Name:
    Screening and design of active metals on dendritic mesoporous Ce0.3Zr0.7O2 for efficient CO2 hydrogenation to methanol.pdf
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    835.1Kb
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    PDF
    Description:
    Accepted manuscript
    Embargo End Date:
    2024-02-04
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    Type
    Article
    Authors
    Alabsi, Mohnnad H.
    Wang, Xilong
    Zheng, Peng
    Ramirez, Adrian
    Duan, Aijun
    Xu, Chunming
    Huang, Kuo-Wei cc
    KAUST Department
    KAUST Catalysis Center and Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia.
    KAUST Catalysis Center (KCC)
    Chemical Science Program
    Physical Science and Engineering (PSE) Division
    Date
    2022-02-04
    Embargo End Date
    2024-02-04
    Submitted Date
    2021-11-28
    Permanent link to this record
    http://hdl.handle.net/10754/675364
    
    Metadata
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    Abstract
    Different active metals (PdCu, PdZn, CuZn, CuGa, and CuNi) over novel dendritic Ce0.3Zr0.7O2 (CZ) support were optimized to investigate their metal alloy interactions and further utilize their surface properties of the spherical morphology and the open pores of the dendritic support. The nature of the dendritic support offers a distinctive property in which it can increases the distribution of active sites. This variety of bimetallic phases withhold a distinctive interaction characteristic with the support that could promote CO2 hydrogenation to methanol by improving the oxygen vacancies and modifying the catalyst's reduction property. The addition of ZnO species into PdZn/CZ catalyst and the higher dispersion degrees of active metals could generate more oxygen vacancies that can improve and stabilize the methoxy species and promote the formate routes, thus, improve the activity of CO2 hydrogenation to methanol reaction. PdZn/CZ catalyst displayed the highest CO2 conversions (25.7 %), methanol yield (6.9 %), and superior 100 h long-term stability than those of other bimetallic catalysts. The best CO2 hydrogenation activity of the PdZn/CZ catalyst can be ascribed to the CO2 adsorption capabilities of CZ support that generated added oxygen vacancies and hydrogen dissociation performance of the Pd-ZnO active site.
    Citation
    Alabsi, Wang, X., Zheng, P., Ramirez, A., Duan, A., Xu, C., & Huang, K.-W. (2022). Screening and design of active metals on dendritic mesoporous Ce0.3Zr0.7O2 for efficient CO2 hydrogenation to methanol. Fuel, 317, 123471. https://doi.org/10.1016/j.fuel.2022.123471
    Sponsors
    This work was supported by King Abdullah University of Science and Technology (KAUST).
    Publisher
    Elsevier BV
    Journal
    Fuel
    DOI
    10.1016/j.fuel.2022.123471
    Additional Links
    https://linkinghub.elsevier.com/retrieve/pii/S0016236122003362
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.fuel.2022.123471
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Chemical Science Program; KAUST Catalysis Center (KCC)

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