Removal of 1,2-DCB from water emulsion using adsorbent catalysts was studied.Purification cycle comprises adsorption and regeneration by hydrodechlorination.The adsorption involves condensation and coalescence of 1,2-DCB drops on carbon.1,2-DCB adsorption was found to proceed by mechanism of volume filling of pores.Regeneration rate was shown to correlate with particle size of the active component. Purification of emulsions of 1,2-dichlorobenzene (1,2-DCB) by carbon-based adsorbent catalysts has been studied. The cycle of purification includes: (1) adsorption of 1,2-DCB from the aqueous phase and (II) reductive regeneration by hydrodechlorination of the adsorbed 1,2-DCB by molecular hydrogen in the liquid phase. 1,2-DCB adsorption from aqueous solutions has been found to proceed by the mechanism of volume filling of pores. The rate of hydrodechlorination was shown to correlate with the particle size of the active component: the finer the particles, the higher the activity of the adsorbent catalyst. Pd/FAS with an average Pd particle size of 2.8nm was found to be the most efficient catalyst.