[yow]

Deutschmann reports superadiabatic flame temperatures for surface reactions of H2 and CH4 over platinum catalyst. Has anyone simulated H2/CH4/C3H8/C4H10 over platinum catalyst? Any tips on how to achieve superadiabatic flame temperatures?

I'm trying to simulate H2 over Pt and have checked my Chemkin import units for EVERYTHING - pre exponential factors, temperature exponents, thermo data, concentration dependent activation energies... and still am only achieving near adiabatic flame temperatures for a simulation of Deutschmann's original 1.8mm x 50mm long cylindrical channel. I refuse to modify adsorption temperature exponents just to increase my combustion temperature...

Anything remotely helpful is appreciated.