High temperature catalytically assisted combustion. Final report 1 Jun 80-31 May 81

Technical Report · Sat Aug 01 04:00:00 EDT 1981

OSTI ID:6538325

Bruno, C; Bracco, F V; Royce, B S.H.; Curtis, P M

Measurements of catalytic combustion of lean mixtures of propane/air at atmospheric pressure over platinum/alumina/cordierite catalysts were carried out over a broad range of equivalence ratios and flow velocities. Substrate (honeycomb) temperatures, chemical species at the catalyst were measured. A substantial data base for catalytic oxidation C/sub 3/H/sub 8/ over platinum catalysts was obtained. A two-dimensional model of the gas-phase oxidation of propane was developed. When the experimental wall temperature is used as the boundary condition for the gas-phase reactions; emissions predicted from the model agree well with measured values. From comparison with the experimental data, indications are that propane oxidation takes place via a three-step kinetic mechanism. Also from study of the relative importance of gas-phase vs. surface oxidation, conclusions are that most of the propane is burnt in the gas-phase rather than at the catalytic wall and that the wall kinetics is slower than the gas diffusion transplant.

• Research Organization: Princeton Univ., NJ (USA). Dept. of Mechanical and Aerospace Engineering
• OSTI ID: 6538325
• Report Number(s): AD-A-118641/0
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
AIR
ALKANES
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CATALYSTS
CATALYTIC COMBUSTORS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
COMBUSTION
COMBUSTORS
ELEMENTS
FLUIDS
GASES
HYDROCARBONS
METALS
ORGANIC COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PLATINUM
PLATINUM METALS
PROPANE
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENTS