The translational energy of CO2 produced from CO oxidation on Pd foil at 600 K was studied using high resolution infrared chemiluminescence spectroscopy. Rotational structure of certain vibrational transitions was fully resolved using a Fourier transform infrared (FTIR) spectrometer operating at 0.006 cm(-1) resolution. The Doppler line broadening of each rovibrational transition was also resolved, and information on translational energy of CO2 was therefore obtained. It was observed that the translational excitation of CO2 was independent of the specific rovibrational state. The sensitivity to angular and velocity distribution of the translational energy of CO2 was also evaluated.