| Industrie De Nora S.p.A. Patent applications |
| Patent application number | Title | Published |
|---|
| 20120125785 | Cathode for Electrolytic Processes - The invention relates to an electrode for electrolytic applications, optionally an oxygen-evolving anode, obtained on a titanium substrate and having a highly compact dual barrier layer comprising titanium and tantalum oxides and a catalytic layer. A method for forming the dual barrier layer comprises the thermal decomposition of a precursor solution applied to the substrate optionally followed by a quenching step and a lengthy thermal treatment at elevated temperature. | 05-24-2012 |
| 20120118754 | Electrode for Oxygen Evolution in Industrial Electrolytic Processes - The invention relates to a catalytic coating suitable for oxygen-evolving anodes in electrochemical processes. The catalytic coating comprises an outermost layer with an iridium and tantalum oxide-based composition modified with amounts not higher than 5% by weight of titanium oxide. | 05-17-2012 |
| 20120061237 | CATHODE FOR ELECTROLYTIC PROCESSES - The invention relates to a cathode for electrolytic processes with evolution of hydrogen comprising a metal substrate with a noble metal-based activation layer and two protective layers, one interposed between the activation layer and the substrate and one external, containing an electroless-depositable alloy of a metal comprising one of nickel, cobalt and iron with a non-metal selected from phosphorus and boron, with the optional addition of a transition element selected between tungsten and rhenium. | 03-15-2012 |
| 20110226627 | ELECTRODE SUITABLE AS HYDROGEN-EVOLVING CATHODE - The invention relates to a cathode for hydrogen evolution in electrolysis cells, for instance chlor-alkali cells or cells for producing chlorate or hypochlorite, obtained starting from a substrate of nickel or other conductive material galvanically coated with nickel co-deposited with an amorphous molybdenum oxide. | 09-22-2011 |
| 20110209992 | Electrode for Electrolysis Cell - The invention relates to an electrode formulation comprising a catalytic layer containing tin, ruthenium, iridium, palladium and niobium oxides applied to a titanium or other valve metal substrate. A protective layer based on titanium oxide modified with oxides of other elements such as tantalum, niobium or bismuth may be interposed between the substrate and the catalytic layer. The thus obtained electrode is suitable for use as an anode in electrolysis cells for chlorine production. | 09-01-2011 |
| 20110174628 | CATHODE MEMBER AND BIPOLAR PLATE FOR HYPOCHLORITE CELLS - A cathodic member for electrochemical cells used in hypochlorite production comprises a zirconium plate coated with a zirconium oxide layer, which is particularly suitable for minimising the decomposition of the hypochlorite product while ensuring a prolonged lifetime. The coated zirconium plate can be used as the cathodic plate in a monopolar cell, or can be welded to a titanium plate for use in a bipolar configuration. | 07-21-2011 |
| 20110108436 | Method for Treating Industrial Waste Waters - There is disclosed a treatment process of wastes containing organic molecules with electron-withdrawing groups on conjugated unsaturated bonds, for instance belonging to aromatic rings. The process comprises an electrochemical reduction step and a simultaneous or subsequent oxidation step, optionally also of electrochemical nature. | 05-12-2011 |
| 20100272830 | Biocide Combination for use in Agricultural Applications - The invention is directed to a combination characterised by a high biocide power for use in agricultural applications, comprising a sodium or potassium hypochlorite solution and an agent allowing to generate hypochiorous acid at the moment of the application, adjusting the concentration thereof in a simple way. | 10-28-2010 |
| 20100236922 | Separator for Chlor-Alkali Electrolytic Cells and Method for its Manufacturing - The invention relates to a synthetic diaphragm for chlor-alkali cells with improved energy consumption and gas separation characteristics. The diaphragm comprises a network of polymer fibres bound to a hydrophilic ceramic material containing zirconium chemically bound to hydroxyl groups. The ceramic material is obtained starting from ZrO | 09-23-2010 |
| 20100183745 | Electrochemical Device for Biocide Treatment in Agricultural Applications - The invention relates to an electrochemical device which simultaneously carries out the production of an oxidising solution at controlled composition containing hypochlorous acid and the sprinkling thereof in a continuous process, useful for biocide treatments in agricultural fields. The device can be installed on motor vehicles or mobile means in general. | 07-22-2010 |
| 20100096275 | Cathode for Electrolysis Cell - 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. | 04-22-2010 |
| 20100084266 | Electrodes with Mechanically Roughened Surface for Electrochemical Applications - The invention relates to a method for roughening the surface of a metal sheet used as electrode support in industrial electrochemical applications, and an electrode made by such method. Mechanical roughening is imparted by skin-passing the sheet between two rollers of a rolling mill, at least one of which is patterned according to a predetermined profile to be transferred by compression to the surface of the metal sheet. | 04-08-2010 |
| 20100059389 | Electrode for Membrane Electrolysis Cells - The invention relates to an electrode for membrane electrolysis cells comprising a grooved metal support favouring the gas release and the electrolyte renewal on its surface. The grooved geometry of the support may be obtained by erosion of a metal sheet with abrasive media in a continuous process. | 03-11-2010 |
| 20090211918 | ELECTROCHEMICAL CELL AND METHOD FOR OPERATING THE SAME - The invention relates to an electrochemical cell comprising an arrangement of anode/cathode pairs, in which the accumulation of scales or similar fouling phenomena are prevented by alternatively operating either the anode or the cathode of one pair and the corresponding counterelectrode of the adjacent pair, the non-operated electrode of each pair being at open circuit. The electrolyte dissolves the scale deposits on the electrodes at open circuit, without resorting to harmful current reversal. | 08-27-2009 |
| 20090200162 | Anode for Electrolysis - The invention relates to an anode comprising a titanium alloy substrate coated with noble metals by thermal decomposition of precursors thereof. The alloy of the substrate includes elements which can be oxidised during the thermal decomposition step, allowing electrical energy savings and a prolonged duration in industrial electrolytic processes. The anode of the invention is suitable for chlor-alkali electrolysis, allowing to produce chlorine with a lower oxygen content and a lower energy consumption than the anodes of the prior art. | 08-13-2009 |
| 20090194411 | Cathode For Electrolytic Processes - 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. | 08-06-2009 |
| 20090178931 | Electrolysis Cell for Hydrogen Peroxide Production and Method of Use - An electrolytic cell for the production of hydrogen peroxide with faradic efficiency and a method for the production of highly pure hydrogen peroxide with high faradic efficiency are disclosed. The cell is provided with a separator of high hydraulic permeability and is equipped with an oxygen-fed gas-diffusion cathode and with an anode activated with a catalyst for oxygen evolution. The high faradic efficiency of hydrogen peroxide generation is allowed by the dilution of product hydrogen peroxide by the anolyte crossing the permeable separator, and by keeping the operating temperature at values below 50° C. | 07-16-2009 |
| 20090038956 | Amalgam Decomposer for Mercury Cathode Cells for Alkali Chloride Electrolysis - The invention relates to an amalgam decomposer for mercury cathode chlor-alkali cells. The amalgam decomposer of the invention contains a filling of carbon steel rings whose external surface is provided with a catalytic coating for amalgam decomposition consisting of one or more electrically conductive metals carbides. The internal surface of the rings is free of catalytic coating and wettable by the amalgam, while the external carbide catalytic coating is not wettable by the amalgam thereby favouring hydrogen evolution. | 02-12-2009 |
| 20090032407 | Device for the Separation of Mercury from Caustic Soda in Chlor-Alkali Plants - The invention relates to a device for breaking the electrical continuity of the stream of caustic soda produced in mercury-cathode chlor-alkali plants. The device is comprised of a vessel internally subdivided into three compartments by two flow-conveying septa, the three compartments being in communication and defining a caustic soda tortuous flow-path allowing the centrifugal deposition of mercury microdroplets released by the upstream amalgam decomposer | 02-05-2009 |
| 20080230381 | SYSTEM FOR THE ELECTROLYTIC PRODUCTION OF SODIUM CHLORATE - A system for the electrolytic production of sodium chlorate having a sodium chloride brine buffered with phosphate and having a reduced or zero chromium content is disclosed. The system comprises electrolytic cells of the undivided type with intercalated cathodes and anodes. The cathodes can comprise steel perforated sheets activated with a Fe—Mo alloy coating. | 09-25-2008 |
