Abstract
In order to clarify the characteristics of the catalytic reaction under high concentration of CO_2, experimental investigation and two-dimensional numerical simulation were conducted in this research. As a result, the stability reduction of catalytic reaction was confirmed under CH_4/O_2/CO_2 mixture compared to CH_4/O_2/N_2 mixture in both of simulation and experiment. This is because the wall and gas phase temperature, exposure of Pt(s) and heat of reaction on catalyst wall surface were decreased in CH_4/O_2/CO_2 mixture.
