Patents by Inventor Antonio Lorenzo Antozzi
Antonio Lorenzo Antozzi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11634827Abstract: 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: GrantFiled: November 25, 2011Date of Patent: April 25, 2023Assignee: INDUSTRIE DE NORA S.P.A.Inventors: Christian Urgeghe, Chiara Pezzoni, Antonio Lorenzo Antozzi
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Patent number: 10968526Abstract: The invention relates to an electrolysis cell of alkali solutions partitioned by an ion-exchange membrane into an anodic compartment in which an alkaline electrolyte is circulated and a cathodic compartment consisting of a gas chamber; the cathodic compartment contains a gas-diffusion cathode in whose interior an electrolyte film coming from the anodic compartment percolates.Type: GrantFiled: October 15, 2013Date of Patent: April 6, 2021Assignee: INDUSTRIE DE NORA S.P.A.Inventors: Luciano Iacopetti, Antonio Lorenzo Antozzi
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Publication number: 20180187318Abstract: An electrode for electrochemical generation of hypochlorite is provided. The electrode has a valve metal substrate coated with a catalytic system consisting of two superimposed 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: ApplicationFiled: January 29, 2018Publication date: July 5, 2018Inventors: Antonio Lorenzo Antozzi, Mariachiara Benedetto, Alice Calderara, Chiara Pezzoni, Christian Urgeghe
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Publication number: 20150240368Abstract: The invention relates to an electrolysis cell of alkali solutions partitioned by an ion-exchange membrane into an anodic compartment in which an alkaline electrolyte is circulated and a cathodic compartment consisting of a gas chamber; the cathodic compartment contains a gas-diffusion cathode in whose interior an electrolyte film coming from the anodic compartment percolates.Type: ApplicationFiled: October 15, 2013Publication date: August 27, 2015Inventors: Luciano Iacopetti, Antonio Lorenzo Antozzi
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Patent number: 9090983Abstract: 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: GrantFiled: August 21, 2012Date of Patent: July 28, 2015Assignee: INDUSTRIE DE NORA S.P.A.Inventors: Marianna Brichese, Antonio Lorenzo Antozzi, Alice Calderara
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Patent number: 9090982Abstract: The invention relates to a cathode for electrolytic processes provided with a catalytic coating based on ruthenium crystallites with highly controlled size falling in a range of 1-10 nm. The coating can be produced by physical vapor deposition of a ruthenium or ruthenium oxide layer.Type: GrantFiled: March 22, 2012Date of Patent: July 28, 2015Assignee: INDUSTRIE DE NORA S.P.A.Inventors: Christian Urgeghe, Stefania Mora, Antonio Lorenzo Antozzi
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Patent number: 9090981Abstract: 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 characterized 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: GrantFiled: May 3, 2012Date of Patent: July 28, 2015Assignee: INDUSTRIE DE NORA S.P.A.Inventors: Marianna Brichese, Antonio Lorenzo Antozzi, Alice Calderara
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Patent number: 8932442Abstract: 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.Type: GrantFiled: January 26, 2012Date of Patent: January 13, 2015Assignee: Industrie de Nora S.p.A.Inventors: Alice Calderara, Antonio Lorenzo Antozzi, Ruben Ornelas Jacobo
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Patent number: 8696877Abstract: 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: GrantFiled: June 2, 2011Date of Patent: April 15, 2014Assignee: Industrie de Nora S.p.A.Inventors: Nedeljko Krstajic, Vladimir Jovic, Antonio Lorenzo Antozzi
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Publication number: 20140008215Abstract: 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: ApplicationFiled: May 3, 2012Publication date: January 9, 2014Applicant: INDUSTRIE DE NORA S.P.A.Inventors: Marianna Brichese, Antonio Lorenzo Antozzi, Alice Calderara
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Publication number: 20130228450Abstract: 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: ApplicationFiled: December 21, 2011Publication date: September 5, 2013Applicant: INDUSTRIE DE NORA S.p.A.Inventors: Christian Urgeghe, Antonio Lorenzo Antozzi
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Publication number: 20130186750Abstract: 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: ApplicationFiled: November 25, 2011Publication date: July 25, 2013Applicant: INDUSTRIE DE NORA S.P.A.Inventors: Christian Urgeghe, Chiara Pezzoni, Antonio Lorenzo Antozzi
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Publication number: 20130087450Abstract: 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: ApplicationFiled: June 17, 2011Publication date: April 11, 2013Applicant: Industrie De Nora S.p.A.Inventors: Antonio Lorenzo Antozzi, Mariachiara Benedetto, Alice Calderara, Chiara Pezzoni, Christian Urgeghe
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Patent number: 8366890Abstract: 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: GrantFiled: May 12, 2011Date of Patent: February 5, 2013Assignee: Industrie de Nora S.p.A.Inventors: Christian Urgeghe, Alexander Morozov, Alice Calderara, Dino Floriano Di Franco, Antonio Lorenzo Antozzi
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Publication number: 20120312683Abstract: 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: ApplicationFiled: August 21, 2012Publication date: December 13, 2012Applicant: Industrie De Nora S.p.A.Inventors: Marianna Brichese, Antonio Lorenzo Antozzi, Alice Calderara
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Patent number: 8313623Abstract: 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: GrantFiled: April 5, 2012Date of Patent: November 20, 2012Assignee: Industrie de Nora S.p.A.Inventors: Antonio Lorenzo Antozzi, Alice Calderara, Marianna Brichese
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Publication number: 20120199473Abstract: 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: ApplicationFiled: April 5, 2012Publication date: August 9, 2012Applicant: Industrie De Nora S.p.A.Inventors: Antonio Lorenzo Antozzi, Marianna Brichese, Alice Calderara
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Publication number: 20120175270Abstract: The invention relates to a cathode for electrolytic processes provided with a catalytic coating based on ruthenium crystallites with highly controlled size falling in a range of 1-10 nm. The coating can be produced by physical vapour deposition of a ruthenium or ruthenium oxide layer.Type: ApplicationFiled: March 22, 2012Publication date: July 12, 2012Applicant: Industrie De Nora S.p.A.Inventors: Christian Urgeghe, Stefania Mora, Antonio Lorenzo Antozzi
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Publication number: 20120164344Abstract: 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.Type: ApplicationFiled: March 6, 2012Publication date: June 28, 2012Applicant: Industrie De Nora S.p.A.Inventors: Antonio Lorenzo Antozzi, Andrea Francesco Gullá, Luciano Iacopetti, Gian Nicola Martelli, Enrico Ramunni, Christian Urgeghe
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Publication number: 20120118754Abstract: 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.Type: ApplicationFiled: January 26, 2012Publication date: May 17, 2012Applicant: Industrie De Nora S.p.A.Inventors: Alice Calderara, Antonio Lorenzo Antozzi, Ruben Ornelas Jacobo