Abstract
Results of EDAX, XRD, IR, TG, DSC and SEM carried out on crystalline materials obtained by diffusion of praseodymium ions through silica gel impregnated with tartaric acid are reported. The crystallized material assumed spherulitic morphology which was established to be Pr2(C4H4O6)35H2O. EDAX confirmed the presence of praseodymium. X-ray diffraction data giving 2θ, intensity andd-values is also reported for the first time. Infrared spectrum in the range of 500–4000 cm−1 and the description of peaks recorded for the material are given. Results of thermal analysis (TG and DSC) indicated that the material is thermally unstable; the decomposition only occurs at 40–560 °C, after which it reduces to Pr2O3. SEM results suggest spherulitic growth arising from diverging crystal fibres which originate from multiple nuclei dispersed within a centrally-located spherical region.
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