Accession Number : ADA118641

Title :   High Temperature Catalytically Assisted Combustion.

Descriptive Note : Final rept. 1 Jun 80-31 May 81,


Personal Author(s) : Bruno,C ; Bracco,F V ; Royce,B S H ; Curtis,P M

PDF Url : ADA118641

Report Date : Aug 1981

Pagination or Media Count : 64

Abstract : 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 C3H8 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. (Author)

Descriptors :   *Combustion, *Catalysts, *Catalytic cracking, *Air breathing engines, Weapon delivery, Defense systems, Physical properties, Fluid dynamics, Predictions, Combustors

Subject Categories : Combustion and Ignition

Distribution Statement : APPROVED FOR PUBLIC RELEASE