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- Author or Editor: H. J. Jaffer x
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Journal of Thermal Analysis and Calorimetry
Authors:
F. Jasim
,
H. J. Jaffer
, and
M. M. Barbooti
Thermoanalytical investigations of the V2O5-K2S2O8 system have revealed that, in the presence of excess amounts of V2O5, the initial decomposition temperature is lowered compared to that of the pure salt. An explanation for this lowering is based on the interaction between V2O5 and the peroxo group of the persulfate ion. The reaction however, is, not unimolecular. The presence of an unknown potassium sulfate complex of V(V) with a catalytic character is indicated by XRD patterns obtained for samples heated up to 410°. It has been found that the formation of K3VO8, KV(SO4)2, K3V5O14 and K4V10O27 depends on whether V2O5 or K2SO4 is present in excess during thermal decomposition.
