Perovskite oxides for thermochemical conversion of carbon dioxide
AssigneeUniversity of South Florida
InventorsJohn N. Kuhn, Debtanu Maiti, Yolanda A. Daza, Bryan J. Hare, Adela E. Ramos, Venkat R. Bhethanabotla
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Abstract
Perovskite oxides and catalysts containing the perovskite oxides are provided for the thermochemical conversion of carbon dioxide to carbon monoxide. The perovskite oxides can exhibit large carbon monoxide production rates and/or low carbon monoxide production onset temperatures as compared to existing materials. Reactors are provided containing the perovskite oxides and catalysts, as well as methods of use thereof for the thermochemical conversion of carbon dioxide to carbon monoxide.
Claims20
A perovskite oxide having a composition according to the formula
- A1xA2(1-X)B1yB2(1-y)O3;
- wherein x is about 0.2 to 0.8;
- wherein y is about 0.2 to 0.8;
- wherein A1 and A2 are independently selected from the group consisting of La, Ca, and Ba, provided that A1 and A2 are not the same;
- wherein B1 and B2 are independently transition metals, provided that B1 and B2 are not the same.
A perovskite oxide, having a composition according to the formula
- A1xA2(1-X)B1yB2(1-y)O3;
- wherein x is about 0.2 to 0.8;
- wherein y is about 0.2 to 0.8;
- wherein A1 and A2 are independently selected from the group consisting of La, Ca, and Ba, provided that A1 and A2 are not the same;
- wherein B1 and B2 are independently transition metals, provided that B1 and B2 are not the same;
- wherein the perovskite oxide is selected from the group consisting of La0.6Ca0.4Fe0.4Mn0.6O3, La0.6Ca0.4Al0.4Mn0.6O3, La0.6Ba0.4Fe0.6Al0.4O3, La0.6Ca0.4Cr0.4Mn0.6O3, La0.6Ca0.4Cr0.6Al0.4O3, La0.6Ca0.4Cr0.6Fe0.4O3, La0.6Ba0.4Mn0.6Fe0.4O3, La0.6Ba0.4MnO3, La0.6Ba0.4Mn0.6Cr0.4O3, La0.6Ba0.4Cr0.8Co0.2O3, La0.6 Ca0.4Cr0.8Co0.2O3, and La0.6Ba0.4Cr0.6Fe0.4O3.
A perovskite oxide having a composition according to the formula
- A1xA2(1-X)B1yB2(1-y)O3;
- wherein x is about 0.2 to 0.8;
- wherein y is about 0.2 to 0.8;
- wherein A1 and A2 are independently selected from the group consisting of La, Ca, and Ba, provided that A1 and A2 are not the same;
- wherein B1 and B2 are independently selected from the group consisting of Al, Fe, Mn, and Co, provided that B1 and B2 are not the same.
Dependencies are inferred from the claim text.