Portal de Periódicos da CAPES

Catalytic combustion of premixed methane/air on a palladium-substituted hexaluminate stagnation surface

2002; Elsevier BV; Volume: 29; Issue: 1 Linguagem: Inglês

10.1016/s1540-7489(02)80128-6

1873-2704

Roderick W. Sidwell, Huayang Zhu, Robert J. Kee, David Wickham, Cyril Schell, Gregory S. Jackson,

Combustion and flame dynamics

This paper is an experimental and modeling study of catalytic combustion of lean methane/air mixtures in stagnation flow over a strontium-palladium-substituted hexaluminate catalyst surface. It reports gasphase profiles in the stagnation-flow boundary layer as measured by microprobe mass-spectrometric sampling. A chemically reacting flow model is developed and used to assist interpretation of the experimental data. A new surface-reaction mechanism does an excellent job of representing the effect of surface temperature (400 °C≤Ts≤760 °C) and equivalence ratio (0.2≤≤0.8).