Curtin University Homepage
  • Library
  • Help
    • Admin

    espace - Curtin’s institutional repository

    JavaScript is disabled for your browser. Some features of this site may not work without it.
    View Item 
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item

    Effects of alkali promoters on tri-metallic Co-Ni-Cu-based perovskite catalyst for higher alcohol synthesis from syngas

    Access Status
    Fulltext not available
    Authors
    Ao, Min
    Pham, Gia
    Sunarso, J.
    Li, F.
    Jin, Y.
    Liu, Shaomin
    Date
    2019
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Ao, M. and Pham, G.H. and Sunarso, J. and Li, F. and Jin, Y. and Liu, S. 2019. Effects of alkali promoters on tri-metallic Co-Ni-Cu-based perovskite catalyst for higher alcohol synthesis from syngas. Catalysis Today.
    Source Title
    Catalysis Today
    DOI
    10.1016/j.cattod.2019.06.061
    ISSN
    0920-5861
    Faculty
    Faculty of Science and Engineering
    School
    WASM: Minerals, Energy and Chemical Engineering
    URI
    http://hdl.handle.net/20.500.11937/76630
    Collection
    • Curtin Research Publications
    Abstract

    © 2019 Elsevier B.V. Direct conversion of natural gas-derived syngas into higher alcohols via the Fischer-Tropsch process offers a more sustainable pathway to address fuels and chemicals demands for various industries in the near future. Large scale application of this process nonetheless relies on the availability of a highly active and selective catalyst. In this work, tri-metallic Co-Ni-Cu catalyst derived from La0.9Sr0.1Co0.8Ni0.1Cu0.1O3 perovskite precursor with two different alkali promoters were prepared and tested for higher alcohol synthesis from syngas. Active components and catalyst performances were found to vary with same weight loading of Na and K. K-promoted catalyst demonstrated the best higher alcohol formation with the higher alcohol distribution of 82.2% and alcohol chain growth probability factor of 0.53 at 325 °C, followed by the Na-promoted and non-promoted counterparts. The rationale behind the alkali addition—performance relationship is two-fold. On one hand, the addition of alkali promotes the formation of stable Co2C; resulting in high Co2C/Co ratio that enhances the higher alcohol distribution but decreases the CO conversion. On the other hand, the increased catalyst basicity obtained from alkali promotion facilitates the carbon chain propagation of alcohols, especially for the conversion of methanol to ethanol. In addition, the alkali promoters, especially K, prevent the deactivation of catalyst Co-Ni-Cu by eliminating the carbon deposition during the reaction; resulting in a stable catalyst even at 340 °C.

    Related items

    Showing items related by title, author, creator and subject.

    • Catalyst Development for Higher Alcohol Synthesis (HAS)
      Ao, Min (2017)
      This study investigated the effects of partial substitution at the A- and/or B-site of LaCoO3 perovskite catalysts (ABO3) on higher alcohol synthesis (HAS) from syngas. The catalyst properties and catalytic performances ...
    • Selectivity enhancement for higher alcohol product in Fischer-Tropsch synthesis over nickel-substituted La0.9Sr0.1CoO3 perovskite catalysts
      Ao, M.; Pham, Gia; Sage, V.; Pareek, Vishnu (2017)
      © 2017 Elsevier Ltd The performance of La 0.9 Sr 0.1 Co 1-x Ni x O 3 perovskite catalysts with different Ni substitution levels was evaluated in the Fischer-Tropsch (F-T) synthesis for higher alcohol production. It was ...
    • Perovskite-derived trimetallic Co-Ni-Cu catalyst for higher alcohol synthesis from syngas
      Ao, Min; Pham, Gia ; Sage, V.; Pareek, Vishnu ; Liu, Shaomin (2019)
      © 2019 Elsevier B.V. Trimetallic Co-Ni-Cu catalyst from perovskite precursor was prepared by co-precipitation method and then examined for its ability to form higher alcohols from syngas. A superior C2+OH yield of 142.1 ...
    Advanced search

    Browse

    Communities & CollectionsIssue DateAuthorTitleSubjectDocument TypeThis CollectionIssue DateAuthorTitleSubjectDocument Type

    My Account

    Admin

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Follow Curtin

    • 
    • 
    • 
    • 
    • 

    CRICOS Provider Code: 00301JABN: 99 143 842 569TEQSA: PRV12158

    Copyright | Disclaimer | Privacy statement | Accessibility

    Curtin would like to pay respect to the Aboriginal and Torres Strait Islander members of our community by acknowledging the traditional owners of the land on which the Perth campus is located, the Whadjuk people of the Nyungar Nation; and on our Kalgoorlie campus, the Wongutha people of the North-Eastern Goldfields.