Chemija / Chemistry
 ISSN 0235-7216 ISSN 2424-4538 (online) |
2009 m. Nr. 1 Formation of barely soluble compounds in the CuSO4–K4P2O7–H2O system
The article deals with barely soluble compounds formed in the CuSO4–K4P2O7–H2O system. The precipitates were analysed by X-ray diffraction (XRD), chemical analysis and FTIR spectroscopy. The results have shown that the formation of barely soluble compounds occurs in the following steps: semiamorphous voluminous precipitate → Cu2P2O7 · 5H2O → Cu3K2(P2O7)2 · 3H2O (Dimorph A) → Cu3K2(P2O7)2 · 3H2O (Dimorph B). A double salt may be formed after some time in the reaction mixture as a result of heterogeneous reaction: Keywords: copper, diphosphates, precipitation, heterogeneous reaction, XRD analysis |
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