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Two dimensional, transient catalytic combustion of CO-air on platinumThe light off transient of catalytic combustion of lean CO-air mixtures in a platinum coated channel of a honeycomb monolith is studied with a model that resolves transient radial and axial gradients in both the gas and the solid. For the conditions studied it is concluded that: the initial heat release occurs near the entrance at the gas-solid interface and is controlled by heterogeneous reactions; large spatial and temporal temperature gradients occur in the solid near the entrance controlled mostly by the availability of fuel; the temperature of the solid near the entrance achieves almost its steady state value before significant heating of the back; heterogeneous reactions and the gas heated up front and flowing downstream heat the back of the solid; the overall transient time is controlled by the thermal inertia of the solid and by forced convection; radiation significantly influences both transient and steady state particularly near the entrance; the oxidation of CO occurs mostly on the catalyst and becomes diffusion controlled soon into the transient.
Document ID
19860025463
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Sinha, N.
(SAI, Inc. Princeton, NJ, United States)
Bruno, C.
(CNR CNPM, Milan, Italy)
Bracco, F. V.
(Princeton University NJ, United States)
Date Acquired
August 12, 2013
Publication Date
January 1, 1985
Publication Information
Publication: PCH/PhysicoChemical Hydrodynamics
Volume: 6
Issue: 4 19
ISSN: 0191-9059
Subject Category
Inorganic And Physical Chemistry
Accession Number
86A10201
Funding Number(s)
CONTRACT_GRANT: AF-AFOSR-76-3052
CONTRACT_GRANT: NAG3-8
Distribution Limits
Public
Copyright
Other

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