초록 ▼

Compositions and methods useful for oxygen sorption and other uses are presented, the compositions A composite material comprising components (A) and (B), wherein component (A) is selected from crystalline ceramic materials capable of forming a stable, reversible perovskite crystal phase at elevated

Compositions and methods useful for oxygen sorption and other uses are presented, the compositions A composite material comprising components (A) and (B), wherein component (A) is selected from crystalline ceramic materials capable of forming a stable, reversible perovskite crystal phase at elevated temperatures (T>500�� C.), and combinations thereof, and component (B) comprises a metal selected from rhodium (Rh), platinum (Pt), palladium (Pd), nickel (Ni) and silver (Ag), and combinations and alloys of these metals.

대표청구항 ▼

What is claimed is: 1. A composite material comprising components (A) and (B), wherein component (A) is selected from compounds within general formulas (4), (5), (6), (7), (8), and (9): description="In-line Formulae" end="lead"A2BO4-δ (4)description="In-line Formulae" end="tail" descripti

What is claimed is: 1. A composite material comprising components (A) and (B), wherein component (A) is selected from compounds within general formulas (4), (5), (6), (7), (8), and (9): description="In-line Formulae" end="lead"A2BO4-δ (4)description="In-line Formulae" end="tail" description="In-line Formulae" end="lead"A2B2O5-δ (5)description="In-line Formulae" end="tail" description="In-line Formulae" end="lead"AO(ABO3-δ)n (6)description="In-line Formulae" end="tail" description="In-line Formulae" end="lead"AM2Cu3O7-δ (7)description="In-line Formulae" end="tail" description="In-line Formulae" end="lead"Bi4V2(1-x)Me2xO11-3x, (8)description="In-line Formulae" end="tail" description="In-line Formulae" end="lead"A"B"O3 (9)description="In-line Formulae" end="tail" wherein: A is independently selected from ions of atoms having atomic numbers ranging from 57-71, inclusive, a cation of yttrium, ions of Group 1 atoms, ions of Group 2 atoms, and combinations of two or more, where Group 1 and Group 2 refer to the periodic table of elements; B is independently selected from d-block transition metal ions; A" is an ion of Na or Li, and B" is an ion of W or Mo; M is a metal cation selected from cations of Group 2 atoms of the periodic table of elements; Me is a metal cation selected from cations of Cu, Bi, and Co atoms; x is a real number ranging from 0.01 to 1.0; n ranges from 1 to about 10; and δ ranges from about 0.05 to about 0.30, and combinations thereof, and component (B) comprises a metal selected from rhodium (Rh), platinum (Pt), palladium (Pd), nickel (Ni) and silver (Ag), and combinations and alloys of these metals. 2. The composite material of claim 1 wherein component (A) is selected from compounds within general formula (10): description="In-line Formulae" end="lead"A2B2O7-δ (10):description="In-line Formulae" end="tail" wherein: A is independently selected from ions of atoms having atomic numbers ranging from 57-7 1,inclusive, a cation of yttrium, ions of Group 1 atoms, ions of Group 2 atoms, and combinations of two or more, where Group 1 and Group 2 refer to the periodic table of elements; B is independently selected from d-block transition metal ions; and 67 ranges from about 0.05 to about 0.30. 3. The composite material as claimed in claim 1 wherein component (A) comprises a crystalline ceramic oxide within general formula (7) AM2Cu3O7-δ. 4. The composite material as claimed in claim 3 wherein component (A) comprises a crystalline ceramic oxide selected from: description="In-line Formulae" end="lead"Y0.5La0.5BaCaCu3O7-δ description="In-line Formulae" end="tail" description="In-line Formulae" end="lead"Y0.8La0.2Ba0.8Sr1.2Cu3 O7-δdescription="In-line Formulae" end="tail" description="In-line Formulae" end="lead"Y0.7La0.3Ba0.8Sr1.2Cu3 O7-δdescription="In-line Formulae" end="tail" description="In-line Formulae" end="lead"Y0.9La1.0Ba0.6Ca0.6Sr 0.8Cu3O7-δdescription="In-line Formulae" end="tail" and combinations thereof. 5. The composite material as claimed in claim 1 wherein said binary metal oxide is selected from binary metal oxides of d-block transition metals and mixtures thereof. 6. A method of separating a gas component from a mixture of gases by pressure swing adsorption, thermal swing absorption, or combination thereof comprising contacting said gas mixture with the composite material as claimed in claim 4. 7. A method for converting hydrocarbons into hydrogen and carbon monoxide by contacting said hydrocarbons with the composite material as claimed in claim 4 having oxygen sorbed thereon. 8. The method as claimed in claim 7 wherein reactions of partial oxidation, steam reforming, or auto-thermal reforming, take place in a process mode selected from batch, semi-continuous, continuous or cyclic operations.