Low-temperature synthetic route based on the amorphous nature of giant species for preparation of lower valence oxides

摘要

We examined low-temperature synthetic route based on the amorphous nature of giant species to succeed to prepare Cs blue bronze (Cs0.3MoO3), which has never obtained by usual high-temperature methods, at ca. 680K. Solid solutions (K1-xRbx)(0.28)MoO3 and (Li1-xNax)(0.9)Mo6O17 were also obtained at lower temperatures (ca. 670K). For the latter system consisting of non-isostructural end members, Li0.9Mo6O17-structure type solid solution was formed even when 0.25< x< 0.70, unlike the case by the usual high-temperature methods. Metastable mixed oxides Ln(2)Mo(3)O(9) (Ln = La, Gd) were obtained, but not as single phases. © 2005 Elsevier Inc. All rights reserved.