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research article

Infrared imaging of temperature profiles in microreactors for fast and exothermic reactions

Haber, J.
•
Kashid, M. N.
•
Borhani, N.
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2013
Chemical Engineering Journal

Though microreactors provide high heat transfer rates, temperature profiles are formed in case of fast and highly exothermic reactions. A method based on non-intrusive infrared thermometry has been developed to track these profiles quantitatively with a resolution of 250 data points/cm(2) and a precision of 1 degrees C. By placing the microreactor at a pressure of 10(-2) mbar, convective heat losses are efficiently suppressed which assures well defined boundaries and reproducible results. The temperature profiles of the fast and exothermic hydrolysis of tetraethoxysilane were measured inside a microcapillary at different flow rates via infrared transparent window. In the reactor provided with a cooling system, the heat transfer coefficient was determined by thermal imaging for different operating conditions. The data obtained are in good agreement with the values reported in literature. (C) 2012 Elsevier B.V. All rights reserved.

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Type
research article
DOI
10.1016/j.cej.2012.10.021
Web of Science ID

WOS:000315322700013

Author(s)
Haber, J.
Kashid, M. N.
Borhani, N.
Thome, J.  
Krtschil, U.
Renken, A.  
Kiwi-Minsker, L.  
Date Issued

2013

Publisher

Elsevier

Published in
Chemical Engineering Journal
Volume

214

Start page

97

End page

105

Subjects

Temperature profile

•

Microreactor

•

Infrared thermometry

•

Exothermic reaction

Editorial or Peer reviewed

NON-REVIEWED

Written at

EPFL

EPFL units
LGRC  
LTCM  
Available on Infoscience
October 29, 2012
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/86374
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