Abstract: The invention relates to a method of manufacturing of metal electrodes for electrolytic applications by means of a continuous deposition of a layer of noble metals upon metal substrates by a physical vapour deposition technique.

Abstract: A structure of cathodic fingers for a chlor-alkali diaphragm cell with improved voltage and faradic efficiency is described, characterized in that a sheet provided with projections is inserted inside each finger. The interwoven wire mesh or the perforated sheet, forming each finger, is secured by a conductive connection, preferably by welding, to the top of each projection, thereby providing optimal uniformity of the electrical current distribution. The projections have a shape preferably equivalent to spherical caps, disposed in a quincuncial pattern. The internal volume of each finger is subdivided by the sheet provided with projections into two portions wherein both the free upward motion of hydrogen bubbles and the free longitudinal motion of the separated hydrogen take place towards the cell perimetrical chamber.

Abstract: The invention relates to a cathode for electrolytic processes, particularly suitable for hydrogen evolution in chlor-alkali electrolysis, consisting of a nickel substrate provided with a coating comprising a protective zone containing palladium and a physically distinct catalytic activation containing platinum or ruthenium optionally mixed with a highly oxidizing metal oxide, preferably chromium or praseodymium oxide.

Abstract: The invention relates to a process for wine evolution by electrochemical way, with reduced treatment times and controlled selectivity. The process may be carried out at the anodic compartment of an electrochemical reactor subdivided by a semipermeable membrane on a valve metal anode, for instance a titanium anode, provided with catalytic coating containing platinum or other noble metal.

Abstract: The invention relates to a cathode for diaphragm chlor-alkali cells delimited by a conductive foraminous surface and having an internal volume containing two juxtaposed elements aimed at improving the fluid and electrical current distribution.

Abstract: The invention relates to a cathode for electrolytic processes, particularly suitable for hydrogen evolution in chlor-alkali electrolysis, consisting of a nickel substrate provided with a coating comprising a protective zone containing palladium and a physically distinct catalytic activation containing platinum or ruthenium optionally mixed with a highly oxidising metal oxide, preferably chromium or praseodymium oxide.

Abstract: The invention relates to a process for wine evolution by electrochemical way, with reduced treatment times and controlled selectivity. The process may be carried out at the anodic compartment of an electrochemical reactor subdivided by a semipermeable membrane on a valve metal anode, for instance a titanium anode, provided with catalytic coating containing platinum or other noble metal.

Abstract: A structure of cathodic fingers for a chlor-alkali diaphragm cell with improved voltage and faradic efficiency is described, characterised in that a sheet provided with projections is inserted inside each finger. The interwoven wire mesh or the perforated sheet, forming each finger, is secured by a conductive connection, preferably by welding, to the top of each projection, thereby providing optimal uniformity of the electrical current distribution. The projections have a shape preferably equivalent to spherical caps, disposed in a quincuncial pattern. The internal volume of each finger is subdivided by the sheet provided with projections into two portions wherein both the free upward motion of hydrogen bubbles and the free longitudinal motion of the separated hydrogen take place towards the cell perimetrical chamber.

Abstract: The invention relates to an improved design of electrolyzer, in particular to the design of a diaphragm electrolyzer for the production of chlorine and alkali from aqueous solutions of alkali chlorides, comprising at least one anode fixed to an anodic base and in electrical contact therewith by means of a current collecting stem separated from the electrolyte circulating in the anodic compartment by means of a hydraulic seal system, wherein a conductive and deformable contact element is interposed between said current collecting stem and said anodic base, and wherein the hydraulic seal system comprises at least one O-ring.

Abstract: The present invention discloses a new design of elements for ion exchange membrane electrolyzers for the electrolysis of brine to produce chlorine, hydrogen and caustic soda. This new design solves the problems affecting prior art, by both minimizing the electrolyte concentration and temperature gradients, and the pressure fluctuation resorting to components which are easy to be installed and may be obtained through automated production cycles.