Systems, methods and materials for NOx decomposition with metal oxide materials
First Claim
1. A method comprising:
- contacting a first gaseous input stream comprising NOx with a metal oxide particle, whereupon the NOx in the first gaseous input stream reacts with the metal oxide particle to generate nitrogen (N2) gas and an oxidized metal oxide particle,wherein contacting the first gaseous input stream with the metal oxide particle occurs at a first temperature of from 400°
C. to 700°
C.;
collecting a first gaseous product stream comprising substantially no NOx;
contacting a second gaseous input stream comprising at least one sweeping gas with the oxidized metal oxide particle, whereupon the sweeping gas comprises oxygen (O2) gas after contacting the oxidized metal oxide particle and a reduced metal oxide particle is generated,wherein the at least one sweeping gas is oxygen (O2) gas free;
wherein contacting the second gaseous input stream with the oxidized metal oxide particle occurs at a second temperature of from 600°
C. to 1000°
C.; and
collecting a second gaseous product stream comprising the oxygen (O2) gas.
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Accused Products
Abstract
Systems and methods use oxygen uncoupling metal oxide material for decomposition of NOx. A gaseous input stream comprising NOx is contacted with a metal oxide particle, generating nitrogen (N2) gas and an oxidized metal oxide particle. After contacting the first gaseous input stream with the metal oxide particle, a first gaseous product stream is collected. The first gaseous product stream includes substantially no NOx. A second gaseous input stream comprising at least one sweeping gas is also contacted with the oxidized metal oxide particle. After contacting the oxidized metal oxide particle, the sweeping gas includes oxygen (O2) and a reduced metal oxide particle is generated. Then a second gaseous product stream is collected, where the second gaseous product stream includes oxygen (O2) gas.
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Citations
7 Claims
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1. A method comprising:
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contacting a first gaseous input stream comprising NOx with a metal oxide particle, whereupon the NOx in the first gaseous input stream reacts with the metal oxide particle to generate nitrogen (N2) gas and an oxidized metal oxide particle, wherein contacting the first gaseous input stream with the metal oxide particle occurs at a first temperature of from 400°
C. to 700°
C.;collecting a first gaseous product stream comprising substantially no NOx; contacting a second gaseous input stream comprising at least one sweeping gas with the oxidized metal oxide particle, whereupon the sweeping gas comprises oxygen (O2) gas after contacting the oxidized metal oxide particle and a reduced metal oxide particle is generated, wherein the at least one sweeping gas is oxygen (O2) gas free; wherein contacting the second gaseous input stream with the oxidized metal oxide particle occurs at a second temperature of from 600°
C. to 1000°
C.; andcollecting a second gaseous product stream comprising the oxygen (O2) gas. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification