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Catalytic Combustion of Propane/Air Mixtures on PlatinumA honeycomb catalyst of platinum (4.2 kg/cu m loading) over cordierite, with gamma-alumina washcoat, a cross section of 2.4 x 2.4 sq cm, a length of 7.6 cm, and a characteristic channel diameter of 1.4 mm is used as a steady flow reactor. Measurements are made with C3H8/air mixtures at 650 to 800 K inlet temperatures, 110 KPa pressure, 10 to 40 m/s inlet velocity, 0.19 to 0.32 equivalence ratios, and approximately 1.5 mole percent water content. The measured quantities are the substrate tempeature at ten axial locations, the exhaust gas temperature, the exhaust concentrations of CO, CO2, O2, and total hydrocarbons, and the pressure drop across the monolith. The measured quantities are compared with those computed with a two-dimensional steady-state model for axial and radial convection and diffusion of mass, momentum, energy and homogeneous (three overall reactions) and heterogeneous (infinitely fast) reactions. It is found that, under the tested conditions, most of the fuel is converted to CO2 and H2O at the surface. Gas-phase reactions tend rapidly to become more important as the temperature and equivalence ratio are increased and the flow velocity is decreased. Surface fuel conversion is much more rapid than fuel diffusion, resulting in diffusion-controlled oxidation.
Document ID
19830047382
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Bruno, C.
(Princeton Univ. NJ, United States)
Walsh, P. M.
(Princeton Univ. NJ, United States)
Santavicca, D. A.
(Princeton Univ. NJ, United States)
Sinha, N.
(Princeton Univ. NJ, United States)
Bracco, F. V.
(Princeton University Princeton, NJ, United States)
Yaw, Y.
(Princeton Univ. NJ, United States)
Date Acquired
August 29, 2013
Publication Date
January 1, 1983
Publication Information
Publication: Combustion Science and Technology
Volume: 31
Issue: 1-2,
Subject Category
Inorganic And Physical Chemistry
Accession Number
83A28600
Funding Number(s)
CONTRACT_GRANT: AF-AFOSR-76-3052
CONTRACT_GRANT: DE-AC21-80MC-14036
Distribution Limits
Public
Copyright
Other

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