New layered perovskites, KSr2Nb3O10 and two new protonated niobates HSr2Nb3O10*1.2H2O and HSr2Nb3O10,were synthesized by solid state reaction and ion-exchange reaction.These new compounds were characterized by EPMA,AAS,XRD,IR,DTA and so on.The structure may be described as treble perovskite sheets [Sr2Nb3O10]- interleaved with K+,H3O+ or H+.These new compounds are new members of the Dion-Jacobsonseries with n=3 for the general formula M[An-1NbnO3n+1],and their indexed X-ray powder diffraction data were first reported in the paper.
参考文献
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