Spatial Resolution of Species and Temperature Profiles in Catalytic Reactors. In Situ Sampling Techniques and CFD Modeling.

Claudia Diehm; Hüsyein Karadeniz; Canan Karakaya; Matthias Hettel; Olaf Deutschmann

doi:10.1016/B978-0-12-800422-7.00002-9

Spatial Resolution of Species and Temperature Profiles in Catalytic Reactors. In Situ Sampling Techniques and CFD Modeling.

Claudia Diehm, Hüsyein Karadeniz, Canan Karakaya, Matthias Hettel, Olaf Deutschmann

Chemical Process Scale Up

Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review

10 Scopus citations

Abstract

Spatial resolution of species and temperature profiles can provide valuable information for understanding, design, and optimization of catalytic reactors. The combination of experimental investigation and CFD modeling does not only improve our knowledge but also helps to discover uncertainties and limitations of novel scientific techniques for an adequate interpretation of the observations. Two lab-scale reactor configurations with in situ capillary techniques are investigated experimentally and numerically for the resolution of spatial species and temperature profiles: the stagnation flow on a catalytically coated disc and the flow through a catalytically coated honeycomb monolith, in which CO is totally and CH₄ is partially oxidized, respectively, over Rh/Al₂O₃ catalysts. CFD simulations reveal two significant items for the interpretation of the measured profiles: internal mass transport inside the catalyst in the stagnation flow reactor and the impact of the capillary probe in the honeycomb monolith.

Original language	English
Title of host publication	Advances in Chemical Engineering
Publisher	Academic Press Inc.
Pages	41-95
Number of pages	55
DOIs	https://doi.org/10.1016/B978-0-12-800422-7.00002-9
State	Published - 2014

Publication series

Name	Advances in Chemical Engineering
Volume	45
ISSN (Print)	0065-2377

Funding

The work presented includes studies of former and current MS and PhD students and postdocs in our group at the Karlsruhe Institute of Technology; in particular, we would like to mention the PhD theses by Canan Karakaya, Claudia Diehm, and Hüsyein Karadeniz as well as the MS thesis by Bentolhoda Torkashvand and would also like to thank Lubow Maier and Steffen Tischer. We very much appreciate the collaboration with Colorado School of Mines (Robert J. Kee) and Politecnico di Milano (Dario Livio, Alessandro Donazzi, Alessandra Beretta) in setting up the stagnation flow and catalytic honeycomb reactors, respectively. Thanks to Yvonne Dedecek (KIT) for editorial assistance. Financial support by the German Research Foundation (DFG), Helmholtz Association via the Helmholtz Research School Energy-Related Catalysis, the European Union, Steinbeis GmbH für Technologietransfer, and many industrial partners is gratefully acknowledged.

Keywords

CFD
CH
CO
Capillary
Heterogeneous catalysis
Honeycomb monoliths
In situ
Microkinetics
Rh
Stagnation flow

Access to Document

10.1016/B978-0-12-800422-7.00002-9

Cite this

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abstract = "Spatial resolution of species and temperature profiles can provide valuable information for understanding, design, and optimization of catalytic reactors. The combination of experimental investigation and CFD modeling does not only improve our knowledge but also helps to discover uncertainties and limitations of novel scientific techniques for an adequate interpretation of the observations. Two lab-scale reactor configurations with in situ capillary techniques are investigated experimentally and numerically for the resolution of spatial species and temperature profiles: the stagnation flow on a catalytically coated disc and the flow through a catalytically coated honeycomb monolith, in which CO is totally and CH4 is partially oxidized, respectively, over Rh/Al2O3 catalysts. CFD simulations reveal two significant items for the interpretation of the measured profiles: internal mass transport inside the catalyst in the stagnation flow reactor and the impact of the capillary probe in the honeycomb monolith.",

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Spatial Resolution of Species and Temperature Profiles in Catalytic Reactors. In Situ Sampling Techniques and CFD Modeling. / Diehm, Claudia; Karadeniz, Hüsyein; Karakaya, Canan et al.
Advances in Chemical Engineering. Academic Press Inc., 2014. p. 41-95 (Advances in Chemical Engineering; Vol. 45).

Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review

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AU - Karadeniz, Hüsyein

AU - Karakaya, Canan

AU - Hettel, Matthias

AU - Deutschmann, Olaf

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AB - Spatial resolution of species and temperature profiles can provide valuable information for understanding, design, and optimization of catalytic reactors. The combination of experimental investigation and CFD modeling does not only improve our knowledge but also helps to discover uncertainties and limitations of novel scientific techniques for an adequate interpretation of the observations. Two lab-scale reactor configurations with in situ capillary techniques are investigated experimentally and numerically for the resolution of spatial species and temperature profiles: the stagnation flow on a catalytically coated disc and the flow through a catalytically coated honeycomb monolith, in which CO is totally and CH4 is partially oxidized, respectively, over Rh/Al2O3 catalysts. CFD simulations reveal two significant items for the interpretation of the measured profiles: internal mass transport inside the catalyst in the stagnation flow reactor and the impact of the capillary probe in the honeycomb monolith.

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KW - CH

KW - CO

KW - Capillary

KW - Heterogeneous catalysis

KW - Honeycomb monoliths

KW - In situ

KW - Microkinetics

KW - Rh

KW - Stagnation flow

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M3 - Chapter

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T3 - Advances in Chemical Engineering

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BT - Advances in Chemical Engineering

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Spatial Resolution of Species and Temperature Profiles in Catalytic Reactors. In Situ Sampling Techniques and CFD Modeling.

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Keywords

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