Importance

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Abstract

A substantially amorphous, aluminum-containing oxide having the composition Al.sub.1-x-y1-y2 Bi.sub.x M.sub.1y1 O.sub.z (wherein x is defined by 0.0001.ltoreq.x.ltoreq.0.10, M.sub.1 is at least one selected from Si, P, B, Sb, Se, Te, Sn, Zn, In, Cr, Nb, Sc, Y, Sr, Ba, Ca, Na, Li, Mg, Mn, W, Ti, Zr, Hf, Be and rare earth metals, M.sub.2 is at least one selected from Fe, Ni, Co, Rh, Ru, Re, Cu and Pb, y1 is defined by 0.ltoreq.y1.ltoreq.0.1, y2 is defined by 0.ltoreq.y2.ltoreq.0.01, z is defined by 1.2.ltoreq.z.ltoreq.1.5, and x, y1, y2 and z are each an atomic ratio); an aluminum-containing metal composition containing the above oxide and Al and/or Bi in a metallic state; a process for producing the above oxide or the above metal composition; and a molded article formed from the above oxide or the above metal composition. The above oxide or the above metal composition is useful as an electronic part, a catalyst, and the like.

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First Claim