Thermochemically active iron titanium oxide materials
View Patent ↗A thermal oxidation-reduction cycle is disclosed that uses iron titanium oxide as the reactive material. The cycle may be used for the thermal splitting of water and/or carbon dioxide to form hydrogen and/or carbon monoxide. The formed compounds may be used as syngas precursors to form fuels.
1. A method for generating a fuel or fuel precursor, comprising:
thermally reducing a mixture comprising ferric pseudobrookite and rutile not in the presence of a fuel to a reduced iron titanium oxide with an atomic ratio of iron to titanium of 1:1 and oxygen by heating the mixture with concentrated solar energy to react the ferric pseudobrookite and rutile;
reacting the reduced iron titanium oxide with a reactant to form a product and ferric pseudobrookite.
2. The method of claim 1 , wherein the reduced iron titanium oxide comprises ilmenite.
3. The method of claim 1 , wherein the reactant is H 2 O and the product is hydrogen.
4. The method of claim 1 , wherein the reactant is CO 2 and the product is carbon monoxide.
5. The method of claim 1 , wherein the reactant is a mixture of H 2 O and CO 2 and the product is a mixture of hydrogen and carbon monoxide.
6. The method of claim 1 , wherein the mixture is dispersed in an yttria stabilized zirconia matrix.
7. The method of claim 1 , wherein thermally reducing is at a temperature greater than or equal to 1280° C.
8. A concentrated solar energy thermal cycle method, comprising:
heating a mixture comprising ferric pseudobrookite and rutile not in the presence of a fuel to a reduction temperature by concentrated solar energy to cause a reduction reaction between the ferric pseudobrookite and rutile to produce reduced iron titanium oxide with a ratio of iron to titanium of 1:1; and
reducing a feedstock material by reacting the feedstock material with the reduced iron titanium oxide to form a product material and ferric pseudobrookite; and
repeating the heating and reducing steps.
9. The method of claim 8 , wherein the feedstock material comprises H 2 O.
10. The method of claim 8 , wherein the feedstock material comprises CO 2 .
11. The method of claim 8 , wherein the reactant is a mixture of H 2 O and CO 2 and the product is a mixture of hydrogen and carbon monoxide.
12. The method of claim 8 , wherein the mixture is dispersed in an yttria stabilized zirconia matrix.