Sulfinylcalix[4]arene-impregnated amberlite XAD-7 resin for the separation of niobium(V) from tantalum(V).
Amberlite XAD-7 resin was impregnated with p-tert-butylsulfinylcalix[4]arene. Niobium(V) was collected on the impregnated resin in yields of more than 90% around pH 5.4, whereas tantalum(V) was negligibly collected. The collected niobium(V) was desorbed with 9 M sulfuric acid nearly quantitatively, hence the separation of niobium(V) from tantalum(V) was successfully achieved.
Matsumiya
Hiroaki
H
Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, Aramaki-Aoba 07, Aoba-ku, Sendai 980-8579, Japan. h-matsu@numse.nagoya-u.ac.jp
Yasuno
Shizu
S
Iki
Nobuhiko
N
Miyano
Sotaro
S
D000180:Acrylic Resins / Q000737:chemistry*; D002852:Chromatography, Ion Exchange / Q000379:methods*; D009556:Niobium / Q000302:isolation & purification*; D010636:Phenols / Q000737:chemistry; D011137:Polystyrenes / Q000737:chemistry*; D013440:Sulfides / Q000737:chemistry; D013635:Tantalum / Q000302:isolation & purification*
D000180:Acrylic Resins; D010636:Phenols; D011137:Polystyrenes; D013440:Sulfides; C500450:thiacalix(4)arene; D009556:Niobium; C015661:amberlite XAD 7; D013635:Tantalum