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  The Controlled Oxidation of Hydrogen from an Explosive Mixture of Gases Using a Microstructured Reactor/Heat Exchanger and Pt/Al2O3 Catalyst

Janicke, M. T., Kestenbaum, H., Hagendorf, U., Schüth, F., Fichtner, M., & Schubert, K. (2000). The Controlled Oxidation of Hydrogen from an Explosive Mixture of Gases Using a Microstructured Reactor/Heat Exchanger and Pt/Al2O3 Catalyst. Journal of Catalysis, 191(2), 282-293. doi:10.1006/jcat.2000.2819.

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 Creators:
Janicke, Michael T.1, Author
Kestenbaum, H.2, Author              
Hagendorf, Ulrike1, Author
Schüth, Ferdi3, Author              
Fichtner, Maximilian4, Author
Schubert, Klaus4, Author
Affiliations:
1Max Planck Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, Mülheim an der Ruhr, D-45470, Germany, ou_persistent22              
2Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck , ou_persistent22              
3Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445589              
4Forschungszentrum Karlsruhe GmbH, Postfach 3640, Karlsruhe, D-76021, Germany, ou_persistent22              

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Free keywords: microstructured reactor; H2/O2 reaction; Pt catalyst; Al2O2 support
 Abstract: With advances achieved in the area of microreactor technology, new possibilities for the use of microchannel reactors in the field of heterogeneous catalysis are now attainable. By exploiting these microstructured reactors for their relatively high surface-to-volume ratio and the inherent safety due to dimensions below the quenching distance at which explosions can propagate, hazardous reaction mixtures can be handled safely. The aim of this paper is to present the results on the catalytic H2/O2 reaction obtained from an alumina-coated microstructured reactor/heat exchanger that has been impregnated with a platinum catalyst. With this reactor, explosive mixtures of gaseous hydrogen and oxygen (up to 50% by volume of H2 in O2) were safely handled and the hydrogen was completely converted to water without explosions by maintaining a heterogeneously catalyzed reaction. The homogeneous reaction was prevented through efficient removal of the heat evolved from this highly exothermic reaction with cooling gas flowing in the heat exchanger channels of the reactor. It is anticipated that the use of microstructured reactors in catalysis research will add new levels of safety and control in studying chemical systems that necessarily involve explosive mixtures of gases.

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Language(s): eng - English
 Dates: 2002-04-122000-04-25
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1006/jcat.2000.2819
 Degree: -

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Title: Journal of Catalysis
Source Genre: Journal
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Publ. Info: San Diego, CA. : Academic Press
Pages: - Volume / Issue: 191 (2) Sequence Number: - Start / End Page: 282 - 293 Identifier: ISSN: 0021-9517
CoNE: https://pure.mpg.de/cone/journals/resource/954922645027