Analysis of interacted poly vanadate based on its preparation and characterization

Author(s): Subrata Chatterjee, P.P.Jha, R.R.Jha, Rajesh Kumar

The triheteropoly vanadate having hetero atom Ni2+ and Co2+ cation was prepared by conventionalmethod in the dilute acidicmediumhaving pH-4.5 at reflux temperature. The thermal stability of the product was studied and it was observed that the product involved three step decomposition as per TGA graph producing about 20.003% weight loss which was also duly supported byDTAgraph indicating one large exothermic peakmaxima at 122.550C. The product isolated is bright brown in appearance. The IR spectrum of the product indicates the presence ofNa,V=O,V-Co,V-Ni, Co-O,Ni-O,V-O and Hydrogen bonded H2O group. On the basis of analytical I.R.spectral, thermal stability its chemical composition is confirmed as Na2 [Ni Co V6 O18] 8.5H2O

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