IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v12y2019i3p469-d202654.html
   My bibliography  Save this article

Kinetics and Reactor Design Aspects of Selective Methanation of CO over a Ru/γ-Al 2 O 3 Catalyst in CO 2 /H 2 Rich Gases

Author

Listed:
  • Panagiota Garbis

    (Chair of Chemical Engineering, Center of Energy Technology, University Bayreuth, 95440 Bayreuth, Germany)

  • Christoph Kern

    (Chair of Chemical Engineering, Center of Energy Technology, University Bayreuth, 95440 Bayreuth, Germany)

  • Andreas Jess

    (Chair of Chemical Engineering, Center of Energy Technology, University Bayreuth, 95440 Bayreuth, Germany)

Abstract

Polymer electrolyte membrane fuel cells (PEMFCs) for household applications utilize H 2 produced from natural gas via steam reforming followed by a water gas shift (WGS) unit. The H 2 -rich gas contains CO 2 and small amounts of CO, which is a poison for PEMFCs. Today, CO is mostly converted by addition of O 2 and preferential oxidation, but H 2 is then also partly oxidized. An alternative is selective CO methanation, studied in this work. CO 2 methanation is then a highly unwanted reaction, consuming additional H 2 . The kinetics of CO methanation in CO 2 /H 2 rich gases were studied with a home-made Ru catalyst in a fixed bed reactor at 1 bar and 160–240 °C. Both CO and CO 2 methanation can be well described by a Langmuir Hinshelwood approach. The rate of CO 2 methanation is slow compared to CO. CO 2 is directly converted to methane, i.e., the indirect route via reverse water gas shift (WGS) and subsequent CO methanation could be excluded by the experimental data and in combination with kinetic considerations. Pore diffusion may affect the CO conversion (>200 °C). The kinetic equations were applied to model an adiabatic fixed bed methanation reactor of a fuel cell appliance.

Suggested Citation

  • Panagiota Garbis & Christoph Kern & Andreas Jess, 2019. "Kinetics and Reactor Design Aspects of Selective Methanation of CO over a Ru/γ-Al 2 O 3 Catalyst in CO 2 /H 2 Rich Gases," Energies, MDPI, vol. 12(3), pages 1-15, February.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:3:p:469-:d:202654
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/12/3/469/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/12/3/469/
    Download Restriction: no
    ---><---

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Eun-Shin Bang & Myoung-Hwan Kim & Sang-Kyun Park, 2022. "Options for Methane Fuel Processing in PEMFC System with Potential Maritime Applications," Energies, MDPI, vol. 15(22), pages 1-16, November.
    2. Sorrenti, Ilaria & Harild Rasmussen, Theis Bo & You, Shi & Wu, Qiuwei, 2022. "The role of power-to-X in hybrid renewable energy systems: A comprehensive review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 165(C).
    3. Sukhe Badmaev & Vladimir Sobyanin, 2020. "Production of Hydrogen-Rich Gas by Oxidative Steam Reforming of Dimethoxymethane over CuO-CeO 2 /γ-Al 2 O 3 Catalyst," Energies, MDPI, vol. 13(14), pages 1-10, July.
    4. Panagiota Garbis & Andreas Jess, 2020. "Selective CO Methanation in H 2 -Rich Gas for Household Fuel Cell Applications," Energies, MDPI, vol. 13(11), pages 1-11, June.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jeners:v:12:y:2019:i:3:p:469-:d:202654. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.