Singular perturbation analysis is employed to investigate the heat and mass transfer of chemically-reactive steady stagnation flows in catalytic porous beds, under the assumption of a thin thermal boundary layer. Results indicate that the control parameters for the reactant concentration are those associated with Arrhenius kinetics, i.e., the reaction rate constant, the activation energy and the fluid temperature feeding the bed. On the other hand, the governing parameters for the temperature profiles are those associated with the chemical reaction heat and the thermal conductivity. The role of the mass diffusivity is not important to reactant concentration and temperature, once the mass diffusion boundary layer remains within the thermal boundary layer. Brinkman＇s viscous layer near the impermeable wall is included in the present analysis; however, its effect on the heat transfer and chemical reaction characteristics is found to be negligible.