Anode for electrolytic synthesis and method for producing fluorine gas

Patent metadata

Field	Value
Publication number	US-2021310138-A1
Application number	US-201917266728-A
Country	US
Kind code	A1
Filing date	Jul 29, 2019
Priority date	Aug 23, 2018
Publication date	Oct 7, 2021
Grant date	—

Abstract

An anode for electrolytic synthesis (3) for electrolytically synthesizing fluorine gas. The anode includes an anode substrate (31) formed of a metallic material and a carbonaceous layer (33) formed of a carbonaceous material and arranged on the surface of the anode substrate (31). The metallic material is an iron-based alloy containing iron and nickel. Also disclosed is a method for producing fluorine gas using the anode for electrolytic synthesis.

First claim

1 . An anode for electrolytic synthesis for electrolytically synthesizing fluorine gas comprising:
an anode substrate formed of a metallic material; and a carbonaceous layer formed of a carbonaceous material and arranged on a surface of the anode substrate, wherein the metallic material is an iron-based alloy containing iron and nickel.

2 . The anode for electrolytic synthesis according to claim 1 , wherein the metallic material is an iron-based alloy containing iron, nickel, and cobalt.

3 . The anode for electrolytic synthesis according to claim 1 , wherein the metallic material is an iron-based alloy containing iron, nickel, cobalt, and carbon.

4 . The anode for electrolytic synthesis according to claim 1 , wherein the iron-based alloy contains 32 mass % or more and 40 mass % or less of nickel.

5 . The anode for electrolytic synthesis according to claim 2 , wherein
the iron-based alloy contains 30 mass % or more and 38 mass % or less of nickel and 3 mass % or more and 12 mass % or less of cobalt.

6 . The anode for electrolytic synthesis according to claim 3 , wherein
the iron-based alloy contains 20 mass % or more and 36 mass % or less of nickel, 3 mass % or more and 20 mass % or less of cobalt, and 0.01 mass % or more and 1.5 mass % or less of carbon.

7 . The anode for electrolytic synthesis according to claim 1 , wherein
the carbonaceous layer contains an inner layer in contact with the anode substrate and an outer layer outside the inner layer, the inner layer is a layer in which at least one of metals constituting the iron-based alloy and carbon coexist, and the outer layer is a layer formed of carbon.

8 . A method for producing fluorine gas comprising:
electrolyzing an electrolytic solution containing hydrogen fluoride to electrolytically synthesize fluorine gas using the anode for electrolytic synthesis according to claim 1 .

9 . The anode for electrolytic synthesis according to claim 2 , wherein
the carbonaceous layer contains an inner layer in contact with the anode substrate and an outer layer outside the inner layer, the inner layer is a layer in which at least one of metals constituting the iron-based alloy and carbon coexist, and the outer layer is a layer formed of carbon.

10 . The anode for electrolytic synthesis according to claim 3 , wherein
the carbonaceous layer contains an inner layer in contact with the anode substrate and an outer layer outside the inner layer, the inner layer is a layer in which at least one of metals constituting the iron-based alloy and carbon coexist, and the outer layer is a layer formed of carbon.

11 . The anode for electrolytic synthesis according to claim 4 , wherein
the carbonaceous layer contains an inner layer in contact with the anode substrate and an outer layer outside the inner layer, the inner layer is a layer in which at least one of metals constituting the iron-based alloy and carbon coexist, and the outer layer is a layer formed of carbon.

12 . The anode for electrolytic synthesis according to claim 5 , wherein
the carbonaceous layer contains an inner layer in contact with the anode substrate and an outer layer outside the inner layer, the inner layer is a layer in which at least one of metals constituting the iron-based alloy and carbon coexist, and the outer layer is a layer formed of carbon.

13 . The anode for electrolytic synthesis according to claim 6 , wherein
the carbonaceous layer contains an inner layer in contact with the anode substrate and an outer layer outside the inner layer, the inner layer is a layer in which at least one of metals constituting the iron-based alloy and carbon coexist, and the outer layer is a layer formed of carbon.

14 . A method for producing fluorine gas comprising:
electrolyzing an electrolytic solution containing hydrogen fluoride to electrolytically synthesize fluorine gas using the anode for electrolytic synthesis according to claim 2 .

15 . A method for producing fluorine gas comprising:
electrolyzing an electrolytic solution containing hydrogen fluoride to electrolytically synthesize fluorine gas using the anode for electrolytic synthesis according to claim 3 .

16 . A method for producing fluorine gas comprising:
electrolyzing an electrolytic solution containing hydrogen fluoride to electrolytically synthesize fluorine gas using the anode for electrolytic synthesis according to claim 4 .

17 . A method for producing fluorine gas comprising:
electrolyzing an electrolytic solution containing hydrogen fluoride to electrolytically synthesize fluorine gas using the anode for electrolytic synthesis according to claim 5 .

18 . A method for producing fluorine gas comprising:
electrolyzing an electrolytic solution containing hydrogen fluoride to electrolytically synthesize fluorine gas using the anode for electrolytic synthesis according to claim 6 .

19 . A method for producing fluorine gas comprising:
electrolyzing an electrolytic solution containing hydrogen fluoride to electrolytically synthesize fluorine gas using the anode for electrolytic synthesis according to claim 7 .

Assignees

• Showa Denko Kk

Inventors

• FUKUCHI Yohsuke
• OGURO Shinya
• Kobayashi Hiroshi

Classifications

• C25B11/061

  Metal or alloy · CPC title

• C25B11/089 Primary

  Alloys · CPC title

• C25B11/065

  Carbon · CPC title

• C22C38/105

  containing Co and Ni · CPC title

• C22C38/08

  containing nickel {(C22C38/105 takes precedence)} · CPC title