| 摘要 |
A crystalline ceramic oxide of the general formula (1), (2), (3), (4), (5), (6), (7), (8), (9), or (10): AxByO3- delta , AxA'x'ByB'y'O3- delta , and AxA'x'A''x''ByB'y'B''y''O3- delta , A2BO4- delta A2B2O5- delta AO(ABO3- delta )n AM2Cu3O7- delta Bi4V2(1-x)Me2xO11-3x, A'B'O3 where B' is W or Mo; A2B2O7- delta , and combinations thereof, wherein: A is a cation of atoms having atomic numbers ranging from 57-71, inclusive, a cation of yttrium, cations of Groups 1 and 2 atoms, and combination thereof; B is a cation of a d-block transition metal; A' is a cation of Na or Li; M is a metal cation selected from cations of Group 2 atoms; Me is a metal cation of Cu, Bi, and Co atoms; x ranges from 0.01 to 1.00; and delta ranges from 0.05 to 0.30 are useful as sorbents of oxygen and catalysts of the reaction between a hydrocarbon and oxygen to form carbon monoxide and hydrogen. The compounds (1) - (10) may also function as active supports for binary metal oxides to enhance the oxygen sorption/desorption capacity of the composites. One group of composite materials comprise components (A) and (B), wherein component (A) is selected from compounds of general formulas (1) through (10), inclusive, 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. <IMAGE>
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