US2014231249A1PendingUtilityA1

Chlorine evolution anode

49
Assignee: MORIMITSU MASATSUGUPriority: Sep 13, 2011Filed: Aug 31, 2012Published: Aug 21, 2014
Est. expirySep 13, 2031(~5.1 yrs left)· nominal 20-yr term from priority
Inventors:Masatsugu Morimitsu
C02F 2001/46147C25C 7/02C25B 1/26C02F 2103/08C02F 2001/46142C25B 11/093C02F 1/4674C25B 11/077C25B 11/067C25B 11/053C25B 11/097C25B 11/051C25B 11/0484
49
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Claims

Abstract

Provided is a chlorine evolution anode in which a main reaction of the anode is chlorine evolution, and the chlorine evolution anode which is low in potential of the anode for chlorine evolution, thereby being able to decrease an electrolytic voltage and lower an electric energy consumption rate. The chlorine evolution anode of the present invention is a chlorine evolution anode in which chlorine evolution from an aqueous solution is a main reaction of the anode and also in which a catalytic layer containing amorphous ruthenium oxide and amorphous tantalum oxide is formed on a conductive substrate.

Claims

exact text as granted — not AI-modified
1 . A chlorine evolution anode wherein a main reaction of the anode is chlorine evolution from an aqueous solution, and the chlorine evolution anode which has a catalytic layer containing amorphous ruthenium oxide and amorphous tantalum oxide formed on a conductive substrate. 
     
     
         2 . The chlorine evolution anode according to  claim 1  which is used in any one of electrowinning, brine electrolysis, acid electrolysis and sea water electrolysis. 
     
     
         3 . The chlorine evolution anode according to  claim 1 , wherein the catalytic layer is composed of a mixture of amorphous ruthenium oxide and amorphous tantalum oxide. 
     
     
         4 . The chlorine evolution anode according to  claim 1 , wherein a mole ratio of ruthenium to tantalum is from 90:10 to 10:90 in the catalytic layer. 
     
     
         5 . The chlorine evolution anode according to  claim 1 , wherein an intermediate layer is formed between the catalytic layer and the conductive substrate. 
     
     
         6 . The chlorine evolution anode according to  claim 5 , wherein the intermediate layer is made of tantalum, niobium, tungsten, molybdenum, titanium, platinum or any one of alloys of these metals. 
     
     
         7 . The chlorine evolution anode according to  claim 5 , wherein the intermediate layer contains a crystalline composite oxide of ruthenium and titanium. 
     
     
         8 . The chlorine evolution anode according to  claim 5 , wherein the intermediate layer contains crystalline ruthenium oxide and amorphous tantalum oxide. 
     
     
         9 . The chlorine evolution anode according to  claim 5 , wherein the intermediate layer is electrically conductive diamond. 
     
     
         10 . The chlorine evolution anode according to  claim 2 , wherein the catalytic layer is composed of a mixture of amorphous ruthenium oxide and amorphous tantalum oxide. 
     
     
         11 . The chlorine evolution anode according to  claim 2 , wherein a mole ratio of ruthenium to tantalum is from 90:10 to 10:90 in the catalytic layer. 
     
     
         12 . The chlorine evolution anode according to  claim 3 , wherein a mole ratio of ruthenium to tantalum is from 90:10 to 10:90 in the catalytic layer. 
     
     
         13 . The chlorine evolution anode according to  claim 10 , wherein a mole ratio of ruthenium to tantalum is from 90:10 to 10:90 in the catalytic layer. 
     
     
         14 . The chlorine evolution anode according to  claim 2 , wherein an intermediate layer is formed between the catalytic layer and the conductive substrate. 
     
     
         15 . The chlorine evolution anode according to  claim 3 , wherein an intermediate layer is formed between the catalytic layer and the conductive substrate. 
     
     
         16 . The chlorine evolution anode according to  claim 4 , wherein an intermediate layer is formed between the catalytic layer and the conductive substrate. 
     
     
         17 . The chlorine evolution anode according to  claim 10 , wherein an intermediate layer is formed between the catalytic layer and the conductive substrate. 
     
     
         18 . The chlorine evolution anode according to  claim 11 , wherein an intermediate layer is formed between the catalytic layer and the conductive substrate. 
     
     
         19 . The chlorine evolution anode according to  claim 12 , wherein an intermediate layer is formed between the catalytic layer and the conductive substrate. 
     
     
         20 . The chlorine evolution anode according to  claim 13 , wherein an intermediate layer is formed between the catalytic layer and the conductive substrate. 
     
     
         21 . The chlorine evolution anode according to  claim 14 , wherein the intermediate layer is made of tantalum, niobium, tungsten, molybdenum, titanium, platinum or any one of alloys of these metals. 
     
     
         22 . The chlorine evolution anode according to  claim 15 , wherein the intermediate layer is made of tantalum, niobium, tungsten, molybdenum, titanium, platinum or any one of alloys of these metals. 
     
     
         23 . The chlorine evolution anode according to  claim 16 , wherein the intermediate layer is made of tantalum, niobium, tungsten, molybdenum, titanium, platinum or any one of alloys of these metals. 
     
     
         24 . The chlorine evolution anode according to  claim 17 , wherein the intermediate layer is made of tantalum, niobium, tungsten, molybdenum, titanium, platinum or any one of alloys of these metals. 
     
     
         25 . The chlorine evolution anode according to  claim 18 , wherein the intermediate layer is made of tantalum, niobium, tungsten, molybdenum, titanium, platinum or any one of alloys of these metals. 
     
     
         26 . The chlorine evolution anode according to  claim 19 , wherein the intermediate layer is made of tantalum, niobium, tungsten, molybdenum, titanium, platinum or any one of alloys of these metals. 
     
     
         27 . The chlorine evolution anode according to  claim 20 , wherein the intermediate layer is made of tantalum, niobium, tungsten, molybdenum, titanium, platinum or any one of alloys of these metals. 
     
     
         28 . The chlorine evolution anode according to  claim 14 , wherein the intermediate layer contains a crystalline composite oxide of ruthenium and titanium. 
     
     
         29 . The chlorine evolution anode according to  claim 15 , wherein the intermediate layer contains a crystalline composite oxide of ruthenium and titanium. 
     
     
         30 . The chlorine evolution anode according to  claim 16 , wherein the intermediate layer contains a crystalline composite oxide of ruthenium and titanium. 
     
     
         31 . The chlorine evolution anode according to  claim 17 , wherein the intermediate layer contains a crystalline composite oxide of ruthenium and titanium. 
     
     
         32 . The chlorine evolution anode according to  claim 18 , wherein the intermediate layer contains a crystalline composite oxide of ruthenium and titanium. 
     
     
         33 . The chlorine evolution anode according to  claim 19 , wherein the intermediate layer contains a crystalline composite oxide of ruthenium and titanium. 
     
     
         34 . The chlorine evolution anode according to  claim 20 , wherein the intermediate layer contains a crystalline composite oxide of ruthenium and titanium. 
     
     
         35 . The chlorine evolution anode according to  claim 14 , wherein the intermediate layer contains crystalline ruthenium oxide and amorphous tantalum oxide. 
     
     
         36 . The chlorine evolution anode according to  claim 15 , wherein the intermediate layer contains crystalline ruthenium oxide and amorphous tantalum oxide. 
     
     
         37 . The chlorine evolution anode according to  claim 16 , wherein the intermediate layer contains crystalline ruthenium oxide and amorphous tantalum oxide. 
     
     
         38 . The chlorine evolution anode according to  claim 17 , wherein the intermediate layer contains crystalline ruthenium oxide and amorphous tantalum oxide. 
     
     
         39 . The chlorine evolution anode according to  claim 18 , wherein the intermediate layer contains crystalline ruthenium oxide and amorphous tantalum oxide. 
     
     
         40 . The chlorine evolution anode according to  claim 19 , wherein the intermediate layer contains crystalline ruthenium oxide and amorphous tantalum oxide. 
     
     
         41 . The chlorine evolution anode according to  claim 20 , wherein the intermediate layer contains crystalline ruthenium oxide and amorphous tantalum oxide. 
     
     
         42 . The chlorine evolution anode according to  claim 14 , wherein the intermediate layer is electrically conductive diamond. 
     
     
         43 . The chlorine evolution anode according to  claim 15 , wherein the intermediate layer is electrically conductive diamond. 
     
     
         44 . The chlorine evolution anode according to  claim 16 , wherein the intermediate layer is electrically conductive diamond. 
     
     
         45 . The chlorine evolution anode according to  claim 17 , wherein the intermediate layer is electrically conductive diamond. 
     
     
         46 . The chlorine evolution anode according to  claim 18 , wherein the intermediate layer is electrically conductive diamond. 
     
     
         47 . The chlorine evolution anode according to  claim 19 , wherein the intermediate layer is electrically conductive diamond. 
     
     
         48 . The chlorine evolution anode according to  claim 20 , wherein the intermediate layer is electrically conductive diamond.

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