1964•OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information)Requires access
COMPLEX FORMATION OF ZIRCONIUM AND HAFNIUM WITH NITRILOTRIACETIC ACID
А. Н. Ермаков, I.M. Marov, G.A. Evtikova
Open publisher page 0 citations
Abstract
The complexing of Zr/sup 4+/ and Hf/sup 4+/ ions with nitrilotriacetic acid in highly acid medium was studied using ion exchange methods. It was found that 1: 1 ratio complexes form in 1 and 2 mole HClO/sub 4/ solution in the presence of H/sub 2/A. Constants for HfAl complexes (0.68 plus or minus 0.03) x 10/sup 4/ and (1.2 plus or minus 0.1) x 10/sup 4/ (2 mole HClO/sub 4/) and for ZrA/sup +/ (11.2 plus or minus 2.0 x 10/sup 4/ and (27.4 plus or minus 2.6) x 10/sup 4/ were found. It was also found that three hydrogen ions split away in the H/sub 3/A reaction with Zr/sup 4+/ and Hf/sup 4+/. (R.V.J.)