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Methane synthesis on nickel by a solid-state ionic method.

T M Gür, R A Huggins

    Science (New York, N.Y.)
    |February 25, 1983
    PubMed
    Summary
    This summary is machine-generated.

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    Electrochemical synthesis of methane via Fischer-Tropsch reactions is feasible using solid oxide electrolytes. This method significantly enhances methanation rates by controlling oxygen activity at the catalyst interface.

    Area of Science:

    • Electrochemistry
    • Catalysis
    • Solid-state chemistry

    Background:

    • Fischer-Tropsch synthesis is a key process for converting syngas to hydrocarbons.
    • Controlling the oxygen activity at the gas-catalyst interface is crucial for optimizing reaction rates.
    • Solid oxide electrolytes offer potential for precise control in electrochemical reactions.

    Purpose of the Study:

    • To demonstrate the feasibility of electrochemically synthesizing methane using a Fischer-Tropsch type reaction.
    • To investigate the use of a solid oxide electrolyte for in situ control of oxygen activity.
    • To evaluate the impact of this technique on methanation rates.

    Main Methods:

    • Utilized a solid-state ionic approach with a solid oxide electrolyte.
    • Applied an external voltage to control oxygen activity at the gas-catalyst interface.

    Related Experiment Videos

  • Tested methanation of hydrogen-carbon monoxide and hydrogen-carbon dioxide mixtures on nickel electrodes.

    • Main Results:

    • Demonstrated the feasibility of electrochemical methane synthesis.
    • Achieved nearly two orders of magnitude enhancement in methanation rates compared to intrinsic rates.
    • Showcased effective in situ control of oxygen activity via applied voltage.

    Conclusions:

    • Electrochemical Fischer-Tropsch synthesis using solid oxide electrolytes is a viable and highly effective method.
    • This solid-state ionic approach offers significant rate enhancements for methanation.
    • The technique provides precise control over reaction conditions, leading to improved catalytic performance.