RARE EARTH-NOBLE METAL-BASED COMPOSITE MATERIAL AND RARE EARTH-NOBLE METAL-BASED COMPOSITE OXIDE

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PROBLEM TO BE SOLVED : To provide an oxide in which noble metals are homogeneously dispersed and which has high homogeneity. SOLUTION : The rare earth-noble metal-based composite material comprises a hexacyano polynuclear complex crystal body that is represented by the general formula : Ln[M(CN)6]nH2O (wherein Ln is at least one kind of rare earth elements, M is at least one kind of trivalent transition metals, and n is 0 or more and 10 or less), and at least one kind of noble metal elements that are different from above M and their compounds as the second component. COPYRIGHT : (C)2006, JPO&NCIPI