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Ceramic microreactors for heterogeneously catalysed gas-phase reactions.

Regina Knitter1, Marcel A Liauw

  • 1Forschungszentrum Karlsruhe GmbH, IMF III, Karlsruhe, Germany. regina.knitter@imf.fzk.de

Lab on a Chip
|July 23, 2004
PubMed
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A new modular microreactor system made of alumina was developed for high-temperature chemical reactions. This ceramic system offers excellent thermal and chemical resistance, overcoming limitations of metal or polymer components.

Area of Science:

  • Chemical Engineering
  • Materials Science

Background:

  • Microchannel components offer high surface-to-volume ratios beneficial for micro chemical engineering.
  • Reactor material and corrosion are critical limitations for metal and polymer microreactors, especially at high temperatures or with corrosive reactants.

Purpose of the Study:

  • To develop and test a modular microreactor system constructed from alumina for high-temperature and corrosive chemical reactions.
  • To evaluate the performance of ceramic microreactor components in demanding chemical processes.

Main Methods:

  • Fabrication of a modular microreactor system using alumina via a rapid prototyping process chain.
  • Investigation of two heterogeneously catalyzed gas-phase reactions: oxidative coupling of methane and isoprene selective oxidation to citraconic anhydride.

Related Experiment Videos

  • Testing the system's suitability at temperatures up to 1000°C.

    • Main Results:

    • The alumina microreactor system demonstrated high thermal and chemical resistance.
    • The ceramic components showed no undesirable side reactions (blind activity).
    • The modular design with exchangeable inserts allowed adaptation to different reaction requirements.

    Conclusions:

    • Alumina-based microreactor systems are well-suited for high-temperature and corrosive chemical engineering applications.
    • The developed modular system offers a robust and adaptable solution for advanced chemical synthesis.
    • Ceramic microreactors provide significant advantages over traditional metal or polymer counterparts in extreme conditions.