Micro-kinetic modeling of NH3 decomposition on Ni and its application to solid oxide fuel cells

Appari, S and Janardhanan, V M and Jayanti, S and Maier, L and Tischer, S and Deutschmann, O (2012) Micro-kinetic modeling of NH3 decomposition on Ni and its application to solid oxide fuel cells. Chemical Engineering Science, 66 (21). pp. 5184-5191. ISSN 0009-2509

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Abstract

This paper presents a detailed surface reaction mechanism for the decomposition of NH3 to H2 and N2 on a Ni surface. The mechanism is validated for temperatures ranging from 700 to 1500K and pressures from 5.3Pa to 100kPa. The activation energies for various elementary steps are calculated using the unity bond index-quadratic exponential potential (UBI-QEP) method. Sensitivity analysis is carried out to study the influence of various kinetic parameters on reaction rates. The NH3 decomposition mechanism is used to simulate SOFC button cell operating on NH3 fuel.

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IITH Creators:
IITH CreatorsORCiD
Janardhanan, V Mhttp://orcid.org/0000-0002-3458-4169
Item Type: Article
Uncontrolled Keywords: Catalysis; Kinetics; Mathematical modeling; NH3 decomposition; Reaction engineering; SOFC
Subjects: Chemical Engineering > Biochemical Engineering
Divisions: Department of Chemical Engineering
Depositing User: Team Library
Date Deposited: 29 Oct 2014 10:01
Last Modified: 05 Jul 2017 11:02
URI: http://raiith.iith.ac.in/id/eprint/529
Publisher URL: https://doi.org/10.1016/j.ces.2011.07.007
OA policy: http://www.sherpa.ac.uk/romeo/issn/0009-2509/
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