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Optical and electrochemical residence time-characterization of LTCC flow-through microreactors

 
: Groß, G.A.; Abahmane, L.; Thelemann, T.; Fischer, M.; Hinz, M.; Boskovic, D.; Günther, P.M.; Köhler, J.M.

American Institute of Chemical Engineers -AIChE-:
Topical Conference on Applications of Micro-Reactor Engineering 2007 : Held at the 2007 AIChE Spring National Meeting. April 22-27, 2007 Houston, Texas, USA
Red Hook, NY: Curran, 2007
ISBN: 978-1-60423-350-6
pp.174-184
Topical Conference on Applications of Micro-Reactor Engineering <2007, Houston/Tex.>
American Institute of Chemical Engineers (AIChE Spring National Meeting) <2007, Houston/Tex.>
English
Conference Paper
Fraunhofer ICT ()

Abstract
A modular microreactor system for reactions at elevated temperature and pressure was developed using the technology of low-temperature cofired ceramics (LTCC). The technology allows the integration of heating elements as well as electrochemical transducers. A set of microelectrode pairs was applied for the determination of the residence time behaviour of different parts of the microreactor system. Conductivity measurements of residence timewere compared with optical measurements using external optical sensors at the inlet and outlet. The results reflect a good agreement between both methods at lower flow rates, but strong differences in the monitoring of global and local residence times at high flow rates.

: http://publica.fraunhofer.de/documents/N-351581.html