Electrochemical reduction device and method of manufacturing hydride of aromatic hydrocarbon compound or nitrogen-containing heterocyclic aromatic compound

Abstract

An electrochemical reduction device includes: an electrolyte membrane; a reduction electrode having a catalyst metal and a porous conductive compound; and an oxygen generating electrode. The catalytic metal includes at least one of Pt and Pd. The conductive compound includes an oxide, nitride, carbide, oxynitride, carbonitride, or partial oxide of a carbonitride of: one or more metals selected from the group consisting of Ti, Zr, Nb, Mo, Hf, Ta, and W.

What is claimed is: 
     
         1 . An electrochemical reduction device comprising:
 an electrolyte membrane having ion conductivity;   a reduction electrode that is provided on one side of the electrolyte membrane and includes, as a reduction catalyst, both a catalyst metal, as a metal for promoting a benzene-ring hydrogenation reaction for an aromatic hydrocarbon compound, and a porous conductive compound for supporting the catalyst metal; and   an oxygen generating electrode provided on the other side of the electrolyte membrane, wherein   the catalyst metal includes at least one of Pt and Pd, and wherein   the conductive compound includes an oxide, nitride, carbide, oxynitride, carbonitride, or partial oxide of a carbonitride of: one or more metals selected from the group consisting of Ti, Zr, Nb, Mo, Hf, Ta, and W.   
     
     
         2 . The electrochemical reduction device according to  claim 1 , wherein
 the catalyst metal further includes one or more metals selected from the group consisting of Cr, Mn, Fe, Co, Ni, Cu, Zn, Mo, Ru, Sn, W, Re, Pb, and Bi.   
     
     
         3 . The electrochemical reduction device according to  claim 1 , wherein
 the conductive compound has electrical conductivity of 1.0×10 −2  S/cm or more.   
     
     
         4 . The electrochemical reduction device according to  claim 1 , wherein
 the reduction electrode includes an ion conductor.   
     
     
         5 . The electrochemical reduction device according to  claim 4 , wherein
 the ion conductor is an ion conducting polymer.   
     
     
         6 . The electrochemical reduction device according to  claim 4 , wherein
 the reduction catalyst is partially coated with the ion conductor.   
     
     
         7 . A method of manufacturing a hydride of an aromatic hydrocarbon compound or a nitrogen-containing heterocyclic aromatic compound, wherein
 at least one benzene ring of the aromatic hydrocarbon compound or the nitrogen-containing heterocyclic aromatic compound is hydrogenated: by introducing either the aromatic hydrocarbon compound or the nitrogen-containing heterocyclic aromatic compound into the reduction electrode side of the electrochemical reduction device according to  claim 1 ; by circulating water or humidified gas to the oxygen generating electrode side of the device; and by externally applying an electric field such that the reduction electrode has an electronegative potential and the oxygen generating electrode has an electropositive potential.   
     
     
         8 . The method of manufacturing a hydride of an aromatic hydrocarbon compound or a nitrogen-containing heterocyclic aromatic compound according to  claim 7 , wherein
 the aromatic hydrocarbon compound or the nitrogen-containing heterocyclic aromatic compound to be introduced into the reduction electrode side is introduced in a liquid state at a reaction temperature.