Catalytic converter for the treatment of combustion exhaust gases

Abstract

A catalytic converter for the treatment of combustion exhaust gases includes a first large surface, which is exposed to the exhaust gas to be purified and which has a layer of a catalytically active material suitable for converting gas components, and a planar first electrode which is in physical contact with the layer made of a catalytically active material suitable for converting gas components, and which is able to receive an electric pumping voltage.

1 . A catalytic converter for treatment of combustion exhaust gases, comprising:
 a first large surface exposed to the exhaust gases to be purified, the first large surface including a layer made of a catalytically active material suitable for converting gas components; and   a planar first electrode situated so as to be in physical contact with the layer made of the catalytically active material suitable for converting gas components, the planar first electrode configured to receive an electric pumping voltage.   
   
   
       2 . The catalytic converter according to  claim 1 , further comprising:
 a solid electrolyte layer in physical contact with at least one of the first electrode and an additional electrode, the first electrode and the additional electrode forming an electrochemical cell.   
   
   
       3 . The catalytic converter according to  claim 1 , wherein the additional electrode acts as anode and includes an open-pore design. 
   
   
       4 . The catalytic converter according to  claim 2 , wherein the solid electrolyte layer contains zirconium dioxide. 
   
   
       5 . The catalytic converter according to  claim 1 , wherein a catalytic converter material includes one of a spinel and a perovskite. 
   
   
       6 . The catalytic converter according to  claim 5 , wherein the perovskite is a compound of general formula ABO 3 , and the spinel is a compound of general formula A 2 BO 4 , wherein A includes one of yttrium and at least one of lanthanides, actinides, alkali metals, earth alkali metals, and mixtures thereof, and B includes at least one of copper, iron, cobalt, nickel and mixtures thereof. 
   
   
       7 . The catalytic converter according to  claim 1 , wherein the layer of the catalytically active material suitable for converting gas components includes a wavy structure. 
   
   
       8 . The catalytic converter according to  claim 2 , further comprising:
 a plurality of the first electrode and a plurality of additional electrode, configured to jointly form an interdigital structure.   
   
   
       9 . A method for producing a catalytic converter for treatment of combustion exhaust gases, wherein the catalytic converter includes a first large surface exposed to the exhaust gases to be purified, the first large surface including a layer made of a catalytically active material suitable for converting gas components; and a planar first electrode situated so as to be in physical contact with the layer made of the catalytically active material suitable for converting gas components, the planar first electrode configured to receive an electric pumping voltage, the method comprising:
 providing a ceramic green body foil including a solid electrolyte material with the first electrode on the first large surface, and with the layer containing catalytically active material suitable for converting gas components, and with a second electrode on a second large surface; and   laterally elongating the ceramic green body foil, the first electrode, the second electrode, and the layer containing catalytically active material suitable for converting gas components, thereby obtaining a wavy structure.   
   
   
       10 . The method according to  claim 9 , further comprising:
 after the lateral elongating, rolling up the ceramic green body foil, the first electrode, the second electrode, and the layer containing catalytically active material suitable for converting gas components parallel to a longitudinal axis of the green body foil, thereby producing a rotationally symmetric body.   
   
   
       11 . The method according to  claim 9 , further comprising:
 sintering the ceramic green body foil, the first electrode, the second electrode, and the layer containing catalytically active material suitable for converting gas components.   
   
   
       12 . A method of using a catalytic converter for treatment of combustion exhaust gases, wherein the catalytic converter includes a first large surface exposed to the exhaust gases to be purified, the first large surface including a layer made of a catalytically active material suitable for converting gas components; and a planar first electrode situated so as to be in physical contact with the layer made of the catalytically active material suitable for converting gas components, the planar first electrode configured to receive an electric pumping voltage, the method comprising:
 removing oxygen-containing components of a gas mixture.