Synthesis and Characterization of Heteropolytungstosilicate Complexes with the Lanthanide Elements

Abstract

Abstract: Lanthanide heteropoly compounds K₁₅[Ln(HSiW₉O₃₄)₂]·28H₂O(Ln=La, Ce, Nd), denoted as Ln(SiW₉)₂, were synthesized and characterized by element analysis, TG-DTA, IR, UV, XPS and XRD. The results show that partial oxygen in Ln(SiW₉)₂was coordinated with Ln^3-, where Ln^-3was in the inner side of the heteropoly anions, while the fundamental structure of SiW₉had little change. The result was supported by ion exchange experiment.

Key words: Tungstosilicic heteropoly complex, Lanthanide elements, Synthesis, Characteri-zation.

WANG Zhan-wen, WU Nai-jun, WANG Shu-fang . Synthesis and Characterization of Heteropolytungstosilicate Complexes with the Lanthanide Elements[J]. Chemical Research in Chinese Universities, 1992, 8(4): 343-347.

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Synthesis and Characterization of Heteropolytungstosilicate Complexes with the Lanthanide Elements

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