The conversion of trichloromethane in mixtures with air was investigated under normal pressure in a gliding discharge (GD) reactor operated in both a homogeneous gas system and with a solid catalyst. The Pt catalyst supported by a honey-comb cordierite structure was placed in the reactor below the ends of the electrodes. Cl(2) and HCl were the main products of the CHCl(3) conversion. The presence of CCl(4) was also noted. The influence of the electrode length and the distance between the electrodes in the narrowest section on CHCl(3) conversion was examined. The Pt catalyst revealed some activity in the trichloromethane processing. This resulted in an increased overall CHCl(3) conversion with the portion of CHCl(3) converted to CCl(4) smaller than that in the homogeneous system. The effect of temperature on CHCl(3) conversion was found to be significant.