Potassium zirconium oxalate a new precursor for the preparation of perovskite, pyrochlore and Nasicon type materials
作者： Maligi Malathi , Kammara Vaishnavi , Gundeboina Ravi , Manasa Sunku , Muga Vithal
DOI: 10.1016/J.JSSC.2019.04.038
关键词:
摘要: Abstract A new precursor, potassium zirconium oxalate pentahydrate, K4[Zr(C2O4)4]·5H2O, was used for the preparation of containing perovskite, pyrochlore and Nasicon type materials. Perovskites (BaZrO3, CaZrO3, SrZrO3 PbZrO3) were prepared by thermal decomposition a mixture pentahydrate MCl2 (M = Ba, Ca, Pb Sr). Pyrochlore materials, Ln2Zr2O7 (Ln = Pr, Nd Gd) synthesized heating LnCl3. composition, KZr2(PO4)3 obtained using phosphoric acid hydrothermal method. Hydrothermal treatment in basic, neutral acidic medium gave different products. compound, ZrO(C2O4)·xH2O (x = 1.2–1.8), from parent medium. The TGA profile recorded. All compositions characterized powder X-ray diffraction technique. composition Fourier-transform infrared spectroscopy, elemental analysis, XPS XRD techniques. advantages this precursor over other compounds reasons formation final products are discussed.
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