Patents Assigned to De Nora S.p.A.
  • Separator for chlor-alkali electrolytic cells and method for its manufacturing
    Patent number: 8778149
    Abstract: 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 fibers bound to a hydrophilic ceramic material containing zirconium chemically bound to hydroxyl groups. The ceramic material is obtained starting from ZrO2 by a process of hydration under vacuum which can be carried out directly in the cell by means of suitable equipment.
    Type: Grant
    Filed: August 10, 2012
    Date of Patent: July 15, 2014
    Assignee: Industrie de Nora S.p.A.
    Inventor: Giovanni Meneghini
  • Cathode member and bipolar plate for hypochlorite cells
    Patent number: 8702877
    Abstract: 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.
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: April 22, 2014
    Assignee: Industrie de Nora S.p.A.
    Inventors: Carl W. Brown, Jr., Richard C. Carlson, Kenneth L. Hardee
  • Electrode suitable as hydrogen-evolving cathode
    Patent number: 8696877
    Abstract: 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.
    Type: Grant
    Filed: June 2, 2011
    Date of Patent: April 15, 2014
    Assignee: Industrie de Nora S.p.A.
    Inventors: Nedeljko Krstajic, Vladimir Jovic, Antonio Lorenzo Antozzi
  • ELECTRODE FOR ELECTROLYTIC PROCESSES AND METHOD OF MANUFACTURING THEREOF
    Publication number: 20140008215
    Abstract: The invention relates to an electrode for electrolytic processes, particularly to a cathode suitable for hydrogen evolution in an industrial electrolysis process comprising a metal substrate coated with an external catalytic layer containing crystalline ruthenium oxide having a highly ordered rutile-type structure with Ru Ru and Ru O bond length characterised by a Debye-Waller factor lower than a critical value. The catalytic outer layer may contain rare earth oxides, such as praseodymium. The electrode may also comprise an internal catalytic thin layer platinum-based, which gives an enhanced protection against accidental current reversal events.
    Type: Application
    Filed: May 3, 2012
    Publication date: January 9, 2014
    Applicant: INDUSTRIE DE NORA S.P.A.
    Inventors: Marianna Brichese, Antonio Lorenzo Antozzi, Alice Calderara
  • Electrolysis cell for hydrogen peroxide production and method of use
    Patent number: 8591719
    Abstract: 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.
    Type: Grant
    Filed: March 20, 2009
    Date of Patent: November 26, 2013
    Assignee: Industrie de Nora S.p.A.
    Inventor: Giuseppe Faita
  • ELECTRODE FOR ELECTROLYTIC CELL
    Publication number: 20130228450
    Abstract: The invention relates to an electrode for evolution of gaseous products in electrolysis cells comprising e metal substrate coated with at least two catalytic compositions, the outermost catalytic composition being deposited by means of chemical or physical phase vapour deposition technique and having a composition comprising noble metals selected from the group of platinum group metals or oxides thereof.
    Type: Application
    Filed: December 21, 2011
    Publication date: September 5, 2013
    Applicant: INDUSTRIE DE NORA S.p.A.
    Inventors: Christian Urgeghe, Antonio Lorenzo Antozzi
  • ANODE FOR ELECTROLYTIC EVOLUTION OF CHLORINE
    Publication number: 20130186750
    Abstract: An electrode suitable for chlorine evolution in electrolysis cells consists of a metal substrate coated with two distinct compositions applied in alternate layers, the former comprising oxides of iridium, ruthenium and valve metals, for instance tantalum, and the latter comprising oxides of iridium, ruthenium and tin. The thus-obtained electrode couples excellent characteristics of anodic potential and selectivity towards the chlorine evolution reaction.
    Type: Application
    Filed: November 25, 2011
    Publication date: July 25, 2013
    Applicant: INDUSTRIE DE NORA S.P.A.
    Inventors: Christian Urgeghe, Chiara Pezzoni, Antonio Lorenzo Antozzi
  • Cathode for electrolytic processes
    Patent number: 8480863
    Abstract: 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.
    Type: Grant
    Filed: January 26, 2012
    Date of Patent: July 9, 2013
    Assignee: Industrie de Nora S.p.A.
    Inventors: Andrea Francesco Gullá, Sobha Abraham
  • ANODE FOR CATHODIC PROTECTION AND METHOD FOR MANUFACTURING THE SAME
    Publication number: 20130168261
    Abstract: It is described a metal anode for cathodic protection in form of mesh ribbon having meshes whose holes are of rhomboidal shape, characterised by having such holes of rhomboidal shape arranged with the major diagonal oriented along the direction of the ribbon length and by the fact that the side edges along the ribbon length are free from cutting protrusions. It is also described a method for obtaining such anode.
    Type: Application
    Filed: September 15, 2011
    Publication date: July 4, 2013
    Applicant: INDUSTRIE DE NORA S.P.A.
    Inventors: Corrado Mojana, Simone Tremolada
  • Cathode for electrolysis cell
    Patent number: 8425754
    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.
    Type: Grant
    Filed: December 28, 2009
    Date of Patent: April 23, 2013
    Assignee: Industrie de Nora S.p.A.
    Inventors: Dario Oldani, Salvatore Peragine, Luciano Iacopetti
  • ELECTRODE FOR ELECTROCHLORINATION
    Publication number: 20130087450
    Abstract: The invention relates to an electrode for electrochemical generation of hypochlorite. The electrode comprises a valve metal substrate coated with a catalytic system consisting of two super-imposed layers of distinct composition and having a different activity towards hypochlorite anodic generation from chloride solutions. The electrode has a high duration in cathodic operation conditions, imparting self-cleaning characteristics thereto when used in combination with an equivalent one with periodic polarity reversal. Moreover, the deactivation of the electrode at the end of its life cycle occurs in two subsequent steps, allowing to schedule the substitution thereof with a significant notice period.
    Type: Application
    Filed: June 17, 2011
    Publication date: April 11, 2013
    Applicant: Industrie De Nora S.p.A.
    Inventors: Antonio Lorenzo Antozzi, Mariachiara Benedetto, Alice Calderara, Chiara Pezzoni, Christian Urgeghe
  • SYSTEM FOR ELECTROCHEMICAL GENERATION OF HYPOCHLORITE
    Publication number: 20130087449
    Abstract: The invention relates to a system for a point-of-use electrochemical generation of hypochlorite on demand in a wide range of volumes and concentration. The system is provided with a processor which adjusts the electrolyte composition, the current density and the electrolysis time, commanding an alert system capable of warning in advance whenever the replacement of electrodes is needed. Automated detection of the insertion and the correct type of several collecting vessels can also be provided, triggering the set-up of electrolysis parameters accordingly.
    Type: Application
    Filed: June 17, 2011
    Publication date: April 11, 2013
    Applicant: Industrie De Nora S.p.A.
    Inventor: Mariachiara Benedetto
  • Catalyst for oxygen reduction
    Patent number: 8372775
    Abstract: A method of producing a catalyst for oxygen reduction and a gas diffusion electrode.
    Type: Grant
    Filed: April 26, 2007
    Date of Patent: February 12, 2013
    Assignee: Industrie de Nora S.p.A.
    Inventors: Andrea F. Gulla, Robert J. Allen, Emory S. De Castro
  • Electrode for electrolysis cell
    Patent number: 8366890
    Abstract: 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.
    Type: Grant
    Filed: May 12, 2011
    Date of Patent: February 5, 2013
    Assignee: Industrie de Nora S.p.A.
    Inventors: Christian Urgeghe, Alexander Morozov, Alice Calderara, Dino Floriano Di Franco, Antonio Lorenzo Antozzi
  • Cathodic finger for diaphragm cell
    Patent number: 8349152
    Abstract: The invention relates to a structure of a cathodic finger for diaphragm electrolysis cells consisting of an external mesh and an internal reinforcing and current-distributing structure provided with protrusions suitable for maximizing the contact points with the external mesh.
    Type: Grant
    Filed: November 9, 2007
    Date of Patent: January 8, 2013
    Assignee: Industrie de Nora S.p.A.
    Inventor: Salvatore Peragine
  • ELECTROCHLORINATION METHOD FOR ABOVE-GROUND SWIMMING POOLS
    Publication number: 20120318748
    Abstract: The invention relate to the addition of mixture of non-halide salts to the water of above-ground swimming pools to allow sterilisation by in-situ electrochlorination with a modest sodium chloride content. A limitation of sodium chloride concentration in above-ground pools is necessary to prevent corrosion of the relevant steel supporting structure. The salt mixture additive contains sodium bisulphate and other salts of low toxicity.
    Type: Application
    Filed: August 31, 2012
    Publication date: December 20, 2012
    Applicant: Industrie De Nora S.p.A.
    Inventors: Richard Carlson, Kenneth L. Hardee, Stephanie Ann Lau
  • Electrode for Electrochemical Processes and Method for Obtaining the Same
    Publication number: 20120312683
    Abstract: An electrode suitable for use as hydrogen-evolving cathode in electrolytic processes is obtained by thermal decomposition of a precursor consisting of an acetic solution of nitrates of ruthenium, and optionally of rare earths. The electrode displays a low cathodic hydrogen evolution overpotential, an improved tolerance to current reversal phenomena and a high duration in industrial operating conditions.
    Type: Application
    Filed: August 21, 2012
    Publication date: December 13, 2012
    Applicant: Industrie De Nora S.p.A.
    Inventors: Marianna Brichese, Antonio Lorenzo Antozzi, Alice Calderara
  • SEPARATOR FOR CHLOR-ALKALI ELECTROLYTIC CELLS AND METHOD FOR ITS MANUFACTURING
    Publication number: 20120305029
    Abstract: 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 ZrO2 by a process of hydration under vacuum which can be carried out directly in the cell by means of suitable equipment.
    Type: Application
    Filed: August 10, 2012
    Publication date: December 6, 2012
    Applicant: Industrie De Nora S.p.A.
    Inventor: Giovanni Meneghini
  • Cathode for electrolytic processes
    Patent number: 8313623
    Abstract: A cathode for electrolytic processes, particularly suitable for hydrogen evolution in chlor-alkali electrolysis comprises a metal substrate provided with a catalytic coating made of two layers containing palladium, rare earths (such as praseodymium) and a noble component selected between platinum and ruthenium. The rare earth percent amount by weight is lower in the outer layer than in the inner layer.
    Type: Grant
    Filed: April 5, 2012
    Date of Patent: November 20, 2012
    Assignee: Industrie de Nora S.p.A.
    Inventors: Antonio Lorenzo Antozzi, Alice Calderara, Marianna Brichese
  • Apparatus for producing disinfectant
    Patent number: D701248
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: March 18, 2014
    Assignee: Industrie de Nora S.p.A.
    Inventors: Mariachiara Benedetto, Elena Carminati