Anode for electrolytic synthesis and method for producing fluorine gas

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.

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 .