Nalazite se na CroRIS probnoj okolini. Ovdje evidentirani podaci neće biti pohranjeni u Informacijskom sustavu znanosti RH. Ako je ovo greška, CroRIS produkcijskoj okolini moguće je pristupi putem poveznice www.croris.hr
izvor podataka: crosbi

Extraction and separation of Tantalum(v) with 3-Hydroxy-2-Methyl-1-(4-tolyl)-4-pyridone (CROSBI ID 80266)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Vojković, Vlasta ; Gojmerac Ivšić, Astrid ; Tamhina, Biserka Extraction and separation of Tantalum(v) with 3-Hydroxy-2-Methyl-1-(4-tolyl)-4-pyridone // Croatica chemica acta, 70 (1997), 2; 667-677

Podaci o odgovornosti

Vojković, Vlasta ; Gojmerac Ivšić, Astrid ; Tamhina, Biserka

engleski

Extraction and separation of Tantalum(v) with 3-Hydroxy-2-Methyl-1-(4-tolyl)-4-pyridone

Extraction of tantalum(V) from aqueous oxalic solution with 3-hydroxy-2-methyl-1-(4-tolyl)-4-pyridone (HY) dissolved in chloroform has been examined at different acidities and ionic strengths. Tantalum(V) is quantitatively extracted with HY from oxalic solution at pH 2.3-2.5, probably as a mixed ligand Ta-oxalate-HY complex. Tantalum(V) can be quantitatively extracted even from a more acidic solution in the presence of sulphuric, hydrochloric or perchloric acids, in the acidity range from pH= 2.3 to 3.5 M H2SO4 or HCl and from pH= 2.3 to 5.5 M HClO4. Thiocyanate, perchlorate and chloride ions produce a synergistic effect on the tantalum(V) extraction with HY. In the presence of an excess of thiocyanate, perchlorate or chloride ions tantalum (V) is quantitatively extracted with HY in the acidity range from pH= 2.3 to 3.5 M H2SO4 as a mixed ligand Ta-NCS-HY, Ta-ClO4-HY or in the form Ta-Cl-HY complexes. Compositions of the complexes are studied and discussed. Tantalum(V) extraction with HY enables its separation from niobium(V), zirconium(IV) and hafnium(IV).

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

Podaci o izdanju

70 (2)

1997.

667-677

objavljeno

0011-1643

Povezanost rada

Kemija

Indeksiranost