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In the paper the full sol-gel process of KNbO powder preparation, using KOH, NbO and KCO as initial substrates as well as oxalic and citric acid as a chelating agent is presented. It was also confirmed that a mixture of compounds obtained during calcination of KOH and NbO, mixed in adequate proportions, could be source of Nb ions in the sol-gel process. The crystal and electronic structure parameters of the manufactured powder proper for KNbO compound were established using XRD, XPS and UV-VIS techniques. [ABSTRACT FROM AUTHOR]