In the course of the experiments nanostructured catalysts have been developed for hydrogenation of ClO3- ions. Different nitrogen doped carbon nanotube (N-BCNT) coated catalyst pellets have been synthetized by the catalytic chemical vapour deposition (CCVD) method. These core-shell structured pellets were used as supports of palladium catalysts. The catalysts were examined by scanning electron microscopy (SEM), energy dispersed X-ray spectrometry (EDX) and X-ray diffractometry (XRD). The catalytic activity of these Pd/BCNT pellets were tested in hydrogenation of chlorate in a continuous flow system. The hydrogenation process was followed by using of a miniaturized spectrophotometric cell developed by us. The catalysts proved to be efficient, because of the higher chlorate hydrogenation 90.5% chlorate conversion could be reached. [GRAPHICS]