Experimental and numerical studies on combustion characteristics of a catalytically stabilized combustor

This study aims to investigate surface catalytic reaction and flame combustion of lean premixed mixture in a catalytically stabilized combustor through experiment and modeling. Five types of catalyst beds composed of Various combinations of noble metal catalysts, Pd and Pt, and a high temperature catalyst, La-Mn-hexaaluminate, were tested. Results showed that the most active catalyst system consisted of a Pd catalyst in the first stage of the catalyst bed and a Pt catalyst in the second stage. A numerical simulation, consisting of three sets of multi-step elementary surface reactions for CH4 oxidation over Pt, was conducted and the most accurate model was used to evaluate the catalyst bed and the homogeneous reaction. The numerical simulation showed that the flame speed of the mixture supported by catalytic surface reaction was much raised as compared to the mixture without a catalytic combustion. (C) 2000 Elsevier Science B.V. All rights reserved.
Publisher
ELSEVIER SCIENCE BV
Issue Date
2000-06
Language
ENG
Keywords

GAS-TURBINE; METHANE; PALLADIUM

Citation

CATALYSIS TODAY, v.59, no.1-2, pp.75 - 86

ISSN
0920-5861
URI
http://hdl.handle.net/10203/73707
Appears in Collection
ME-Journal Papers(저널논문)
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