Abstract: The invention relates to a process and device for catalyzing chemical reaction. The reaction system is brought into contact with the surface of a solid, electrically conducting layer provided with an underlying insulating or semi-conducting layer and an electric current is passed successively across both layers. The device comprises a stratified body having at least one electrically insulating or semi-conducting layer, covered at least partially with an electrically conducting layer suitable for contact with the reaction system, and means for applying a voltage for passage of a given electric current across said body.Heterogeneous catalysis of a desired reaction is achieved at the surface of the conducting layer due to said current passage.