Complex oxides for reactive oxygen separation and related applications
AssigneeNorth Carolina State University
InventorsFanxing Li, Xijun Wang, Emily Krzystowczyk, Jian Dou, Yunfei Gao
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Abstract
In one aspect, the disclosure relates to an oxygen-deficient mixed metal perovskite having the formula SrxA1-xFeyB1-yO3-δ, wherein A can be Ca, K, Y, Ba, La, Sm, or any combination thereof; wherein B can be Co, Cu, Mn, Mg, Ni, Ti, or any combination thereof; wherein x is from 0 to 1; wherein y is from 0 to 1; and wherein δ is from 0 to 0.7. Also disclosed are redox catalysts comprising the oxygen-deficient mixed metal perovskites and methods for chemical looping air separation, chemical looping CO2 splitting, and chemical looping alkane conversion using the disclosed catalysts.
Claims18
An oxygen-deficient mixed metal perovskite comprising the formula Srx(A/A′)1-xFey(B/B′)1-yO3-δ,
- wherein Srx(A/A′)1-xFey(B/B′)1-yO3-δ is selected from the group consisting of Sr0.75Ca0.25Fe0.75Mn0.25O3-δ, Sr0.875Ca0.125Fe0.625Mg0.375O3-δ, Sr0.75Ca0.25CoO3-δ, Sr0.875K0.125CoO3-δ, Sr0.875La0.125Fe0.75Cu0.25O3-δ, Sr0.875Y0.125Fe0.75Ni0.25O3-δ, Sr0.625Ca0.375Fe0.75Cu0.25O3-δ, Sr0.875Ba0.125Fe0.375Mn0.625O3-δ, Sr0.875K0.125Fe0.75Co0.125Ni0.125O3-δ, Sr0.5Ba0.5Fe0.625Mg0.25Ti0.125O3-δ, SrFe0.5Cu0.125Mn0.125Mg0.25O3-δ, Sr0.875Ca0.125Fe0.75Co0.125Ni0.125O3-δ, Sr0.875La0.125Fe0.75Co0.125Ni0.125O3-δ, Sr0.875Sm0.125Fe0.75Co0.125Ni0.125O3-δ, Sr0.5Y0.5Fe0.125Ti0.875O3-δ, Sr0.375Y0.625Fe0.5Ti0.5O3-δ, Sr0.5Y0.5Fe0.375Ti0.625O3-δ, Sr0.375Sm0.625Fe0.375Ti0.625O3-δ, Sr0.125Sm0.875Fe0.75Cu0.25O3-δ, Sr0.375La0.375Sm0.25Fe0.75Ti0.25O3-δ, Sr0.375La0.5Sm0.125Fe0.75Ti0.25O3-δ, and Sr0.125La0.625Sm0.25Fe0.875Ti0.125O3-δ.
Dependencies are inferred from the claim text.