公开(公告)号：US20170306512A1

公开(公告)日：2017-10-26

申请号：US15521396

申请日：2015-11-23

Applicant: INDUSTRIE DE NORA S.P.A.

Inventor： Alice GARGIULO ,  Alice CALDERARA ,  Chiara PEZZONI

IPC: C25B11/04 ,  C02F1/461 ,  C25B1/26 ,  C02F101/12

CPC classification number: C25B11/0405 ,  C02F1/46109 ,  C02F2001/46142 ,  C02F2101/12 ,  C25B1/26 ,  C25B11/0484

Abstract: An electrode suitable as chlorine-evolving anode in electrolytic cells and a method for obtaining thereof is provided. The electrode has a metal substrate coated with a catalytic composition made of thin layers based on oxides of tin, iridium and ruthenium and combines excellent characteristics of anodic potential and selectivity with respect to the reaction of chlorine evolution without resorting to the use of dopants such as platinum and palladium.

公开(公告)号：US20240360572A1

公开(公告)日：2024-10-31

申请号：US18574593

申请日：2022-08-01

Applicant: INDUSTRIE DE NORA S.P.A.

Inventor： Alice CALDERARA ,  Stefania MORA

IPC: C25B11/053 ,  C25B1/04 ,  C25B1/16 ,  C25B1/26 ,  C25B11/061 ,  C25B11/097

CPC classification number: C25B11/053 ,  C25B1/04 ,  C25B1/16 ,  C25B1/26 ,  C25B11/061 ,  C25B11/097

Abstract: An electrode and in particular an electrode suitable for use as a cathode for hydrogen evolution in industrial electrolytic processes and a method for its preparation. The electrode comprises a metal substrate provided with a catalytic coating, the catalytic coating comprising a first protective layer in direct contact with the substrate, the first protective layer comprising platinum, in the form of metal or its oxides, and a second layer applied on top of the first protective layer, the second layer comprising platinum, palladium and an element selected from the group of rare earths, in the form of metals or their oxides, wherein the second layer comprises 15-40% by weight of platinum and 10-30% by weight of palladium and 40-75% by weight of an element selected from the group of rare earths referred to metals.

公开(公告)号：US20190338147A1

公开(公告)日：2019-11-07

申请号：US16063417

申请日：2016-12-21

Applicant: INDUSTRIE DE NORA S.P.A.

Inventor： Alice CALDERARA ,  Valentina BONOMETTI

IPC: C09D5/08 ,  C09D127/18 ,  C23C18/12 ,  C25B9/00

Abstract: The invention relates to a coating for providing protection against interstitial corrosion for titanium surfaces such as flanges or other equipment used in highly aggressive electrolytic environments, for example hydrochloric acid electrolysis cells. The coating according to the invention comprises a passivating layer, on which a film of water-repellent material is applied. The invention further relates to a method for providing anticorrosive protection for flanges of electrochemical cells.

公开(公告)号：US20180127887A1

公开(公告)日：2018-05-10

申请号：US15572265

申请日：2016-06-22

Applicant: INDUSTRIE DE NORA S.P.A.

Inventor： Alice CALDERARA ,  Fabio TIMPANO ,  Takashi FURUSAWA

IPC: C25B11/04 ,  C25C1/12 ,  C25B1/02 ,  C25C7/02

CPC classification number: C25B11/0484 ,  C25B1/02 ,  C25B11/0405 ,  C25B11/0415 ,  C25C1/12 ,  C25C7/02

Abstract: An electrode on valve metal substrate suitable for the evolution of oxygen in electrolytic processes is provided with a coating having a catalytic layer containing platinum group metals and one or more protective layers based on tin oxide modified with a doping element selected from bismuth, antimony or tantalum and with a small amount of ruthenium. The electrode is useful in processes of non-ferrous metal electrowinning.

公开(公告)号：US20160024670A1

公开(公告)日：2016-01-28

申请号：US14781472

申请日：2014-04-03

Applicant: INDUSTRIE DE NORA S.P.A.

Inventor： Alessandro FIORUCCI ,  Alice CALDERARA ,  Luciano IACOPETTI

IPC: C25C7/00 ,  C25C7/04 ,  C25C7/02 ,  C25C1/12

CPC classification number: C25C7/06 ,  C25C1/12 ,  C25C7/00 ,  C25C7/02 ,  C25C7/04

Abstract: The invention relates to a cell for metal electrowinning equipped with a device useful for preventing the adverse effects of dendrite growth on the cathodic deposit. The cell comprises a porous conductive screen, positioned between the anode and the cathode, capable of stopping the growth of dendrites and avoiding that they reach the anode surface.

Abstract translation: 本发明涉及一种用于金属电解沉积的电池，其配备有用于防止枝晶生长对阴极沉积物的不利影响的装置。 电池包括位于阳极和阴极之间的多孔导电屏，能够阻止枝晶的生长并避免它们到达阳极表面。

公开(公告)号：US20230151503A1

公开(公告)日：2023-05-18

申请号：US17906429

申请日：2021-03-23

Applicant: INDUSTRIE DE NORA S.P.A.

Inventor： Alice CALDERARA ,  Marianna BRICHESE

IPC: C25B11/093 ,  C25B9/19 ,  C25B11/061 ,  C25B1/04 ,  C25B1/34 ,  C25D1/00 ,  C25D17/12

CPC classification number: C25B11/093 ,  C25B9/19 ,  C25B11/061 ,  C25B1/04 ,  C25B1/34 ,  C25D1/00 ,  C25D17/12

Abstract: A method for surface treatment of a metal substrate, suitable for use as electrode support in electrochemical processes by: (a) immersion of the metal substrate and of at least one counter electrode in an electrolyte selected from hydrochloric acid, nitric acid, boric acid or sulfuric acid at a weight concentration of between 10-40%; (b) application of an anodic current density to the metal substrate of between 0.1 and 30 A/dm2 for a time of between 0.5 and 120 minutes. An electrode for gas evolution in electrochemical processes obtained from a correspondingly treated substrate.

公开(公告)号：US20210324534A1

公开(公告)日：2021-10-21

申请号：US17362290

申请日：2021-06-29

Applicant: INDUSTRIE DE NORA S.P.A.

Inventor： Alice CALDERARA ,  Luciano IACOPETTI ,  Fabio TIMPANO

IPC: C25D17/10 ,  C25D3/06 ,  C25C7/02 ,  C25C1/10 ,  C25B11/093 ,  C25D3/04

Abstract: An electrode for electrolytic processes, in particular to an anode suitable for oxygen evolution having a valve metal substrate, a catalytic layer, a protection layer consisting of oxides of valve metals interposed between the substrate and the catalytic layer and an outer coating of oxides of valve metals. The electrode is particularly suitable for processes of cathodic electrodeposition of chromium from an aqueous solution containing Cr (III).

公开(公告)号：US20210238757A1

公开(公告)日：2021-08-05

申请号：US16973245

申请日：2019-06-13

Applicant: INDUSTRIE DE NORA S.P.A.

Inventor： Alice GARGIULO ,  Alice CALDERARA ,  Luciano IACOPETTI

IPC: C25B11/081 ,  C25B13/00 ,  C25B9/23 ,  C25B11/063 ,  C25B1/26

Abstract: The invention relates to a process for obtaining a electrode usable as a anode in electrolytic cells for the production of chlorine. The electrode thus obtained comprises a catalytic layer containing oxides of tin, ruthenium, iridium and titanium applied to a substrate of a valve metal.

公开(公告)号：US20150308004A1

公开(公告)日：2015-10-29

申请号：US14441646

申请日：2013-11-11

Applicant: INDUSTRIE DE NORA S.P.A.

Inventor： Marianna BRICHESE ,  Alice CALDERARA ,  Cecilia DEL CURTO

IPC: C25B11/04 ,  C25B9/18 ,  C25B1/26 ,  C25B9/10

CPC classification number: C25B11/0442 ,  C25B1/26 ,  C25B9/10 ,  C25B9/18 ,  C25B9/20 ,  C25B11/0405 ,  C25B11/0415 ,  C25B11/0484 ,  C25B11/0494

Abstract: The invention relates to an electrode suitable for use as a cathode for hydrogen evolution in industrial electrolytic processes. The electrode comprises a metallic substrate, an internal catalytic layer containing rhodium and an external catalytic layer containing ruthenium.

Abstract translation: 本发明涉及一种适用于工业电解工艺中用于析氢的阴极的电极。 电极包括金属基底，含有铑的内部催化剂层和含有钌的外部催化剂层。

公开(公告)号：US20230203683A1

公开(公告)日：2023-06-29

申请号：US18000369

申请日：2021-06-22

Applicant: INDUSTRIE DE NORA S.P.A.

Inventor： Alice CALDERARA ,  Stefania MORA

IPC: C25B11/093 ,  C25B11/053 ,  C25B1/46 ,  C25B1/04 ,  C25B9/19 ,  C25B9/70

CPC classification number: C25B11/093 ,  C25B11/053 ,  C25B1/46 ,  C25B1/04 ,  C25B9/19 ,  C25B9/70

Abstract: An electrode suitable for use as a cathode for the development of hydrogen in industrial electrolytic processes, equipped with a catalytic coating having an external layer containing ruthenium and selenium; and a method for the production of the same.