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Surface Reaction Kinetics of Steam- and CO₂-Reforming as Well as Oxidation of Methane over Nickel-Based Catalysts

Delgado, Karla Herrera 1; Maier, Lubow 2; Tischer, Steffen ORCID iD icon 2; Zellner, Alexander 1; Stotz, Henning 1; Deutschmann, Olaf 1,2
1 Institut für Technische Chemie und Polymerchemie (ITCP), Karlsruher Institut für Technologie (KIT)
2 Institut für Katalyseforschung und -technologie (IKFT), Karlsruher Institut für Technologie (KIT)

Abstract:

An experimental and kinetic modeling study on the Ni-catalyzed conversion of methane under oxidative and reforming conditions is presented. The numerical model is based on a surface reaction mechanism consisting of 52 elementary-step like reactions with 14 surface and six gas-phase species. Reactions for the conversion of methane with oxygen, steam, and CO₂ as well as methanation, water-gas shift reaction and carbon formation via Boudouard reaction are included. The mechanism is implemented in a one-dimensional flow field description of a fixed bed reactor. The model is evaluated by comparison of numerical simulations with data derived from isothermal experiments in a flow reactor over a powdered nickel-based catalyst using varying inlet gas compositions and operating temperatures. Furthermore, the influence of hydrogen and water as co-feed on methane dry reforming with CO₂ is also investigated.


Verlagsausgabe §
DOI: 10.5445/IR/110103758
Veröffentlicht am 17.01.2018
Originalveröffentlichung
DOI: 10.3390/catal5020871
Scopus
Zitationen: 89
Web of Science
Zitationen: 82
Dimensions
Zitationen: 89
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Katalyseforschung und -technologie (IKFT)
Institut für Technische Chemie und Polymerchemie (ITCP)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2015
Sprache Englisch
Identifikator ISSN: 2073-4344
urn:nbn:de:swb:90-AAA1101037585
KITopen-ID: 110103758
HGF-Programm 37.03.01 (POF III, LK 01) Catalysts and Mechanisms
Erschienen in Catalysts
Verlag MDPI
Band 5
Heft 2
Seiten 871-904
Schlagwörter reaction kinetics, thermodynamic consistency, nickel, steam reforming, dry reforming, partial oxidation
Nachgewiesen in Scopus
Dimensions
Web of Science
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