cation exchange behavior of scandium titanium

Systematic investigations of the exchange behavior of metals between thiocyanate media and ion exchange resins, both anion and cation, have been reported. Several of these papers have been concerned with the behavior of lanthanide and actinide metals. Hamaguchi et (33, 34) used Diaion SK-1, a cation exchange resin very similar to Bowex 50,

potentiometric titration. The uptake behaviour of scandium by the TiPs was studied in detail in a batch mode operation. The selectivity for scandium ion exchange from acidic solutions are assessed in binary equimolar solutions of scandium and other typical ions (Fe, Al, Ca, Y) present in BR leachate.

Amongst the extractants, which were investigated for the selective extraction of scandium and titanium from the acidic lixivium in this study, D2EHPA and primary amine N1923 performed best. 2 ...

@article{osti_7002698, title = {Cation-exchange behavior of scandium, titanium, and vanadium in various degrees of oxidation in dilute hydrofluoric acid solutions}, author = {Razbash, A A and Sevast'yanov, Yu G}, abstractNote = {The distribution coefficients of scandium, titanium, and vanadium in various degrees of oxidation between the sulfonic acid type cation-exchange resin KRS-8p and ...

Dec 05, 2009· Dec 05, 2009· Cation exchange chromatographic separation of scandium from titanium and other elements has been reported [9, 15]. A generator system of 44 Ti/ 44 Sc uses Dowex 1 X8 anion exchange column in the chloride form, the 44 Ti is adsorbed in 0.1 M oxalic acid, while 44 Sc is eluted with a mixture of 0.1 M oxalic acid and 0.2 mL hydrochloric acid ...

The minimum extraction of Fe was observed at the acidity close to 3 M HCl. The decrease Fe extraction rate from 1 to 3 M corresponds to the cation exchange. Under the conditions of low acid, due to the strong deprotonation in the extractant, it is easy to exchange with Fe 3+ ions. However, the extraction of Fe began to enhance at acidity higher ...

Feb 15, 2004· Feb 15, 2004· The ion exchange capacity of alpha-titanium phosphate is greater than those of other phosphates, which is explained on the basis of the surface behavior, disorderness of the system, degree of hydrolysis of incoming guest adsorbate metal ions, and structural steric hindrance of the exchangers during adsorption and sorption.

JOURNAL OF CHRO1V~ATOGRAPH T-43 TI-IE SEPARATION OF SCANDIUM BY CATION EXCHANGE IN ACID AM- 1KONIUM SULFATE MEDIA ROKURO I(URODA, YOSHIHITO NAKAGOMI AND I(OJI ISHIDA Laboratory for Analytical Chemistry, Faculty of E**gineeri,,g, University of Chiba, ayoi-vho, ›fiiba (Japan) (Received September 27th, z965) The considerable data regarding the ion …

@article{osti_4013152, title = {ANION-EXCHANGE BEHAVIOR OF SCANDIUM IN CHLORIDE-THIOCYANATE MEDIA}, author = {Hamaguchi, H and Onuma, N and Kishi, M and Kuroda, R}, abstractNote = {A method is described for the separation of scandium from rare earths and thorium by anion exchange. The method utilizes the adsorption of a negatively charged thiocyanato complex of …

Cation-exchange separation of scandium 157 50 40 (d) Elution of scandium, dysprosium and europium. 30 20 10 100 200 300 400 500 600 Volume of effluent, ml 100 80 . 60 40 20 ^ IM NHiSCN in 0-5M H Cl ' s 2M 0c NH4SCN m )-5M HCl Al 4^, (e) Elution of aluminium and scandium. 50 100 150 200 250 300 Volume of effluent, ml 0-5M NH,SCN in 0-5M HCl. 2M ...

Sc scandium Sc 3+ scandium ion Ga gallium Ga 3+ gallium ion Ti titanium Ti 3+ titanium(III) ion titanous ion Ti 4+ titanium(IV) ion titanic ion V vanadium V3+ vanadium(III) ion vanadous ion V5+ vanadium(V) ion vanadic ion Cr chromium Cr 2+ chromium ... Element Symbols & Names Cations Stock System Latin System . H hydrogen H ¯ hydride ion

Yttrium is a chemical element with the symbol Y and atomic number 39. It is a silvery-metallic transition metal chemically similar to the lanthanides and has often been classified as a "rare-earth element". Yttrium is almost always found in combination with lanthanide elements in rare-earth minerals, and is never found in nature as a free element. 89 Y is the only stable isotope, and the only ...

Separation of carrier-free 47 Sc from titanium targets. IntroductionScandium-47 is a radionhclide of potential value for radiotherapy with labelled tumor-associated monoclonal antibodies. The 3.42 d half-life of 47 Sc is sufficient for good tumor uptake. It is a medium energy ~-emitter, with emissions of 441.1 keVmax (68%) and 600.5 keVma x (32%).

Scandium is a chemical element with the symbol Sc and atomic number 21.. A silvery-white metallic d-block element, it has historically been classified as a rare-earth element, together with yttrium and the lanthanides.It was discovered in 1879 by spectral analysis of the minerals euxenite and gadolinite from Scandinavia.. Scandium is present in most of the deposits of rare-earth and uranium ...

Separation of tervalent rare earths and scandium from aluminium, iron(iii), titanium(iv), and other elements by cation-exchange chromatography in hydrochloric acid-ethanol. Strelow FW(1), Baxter C. Author information: (1)National Chemical Research Laboratory, P.O. Box 395, Pretoria, S. Africa.

Oct 24, 2006· Oct 24, 2006· Abstract. From certain organic solvents containing organic phosphorus compounds such as ctylphosphine oxide (TOPO), bis(2-ethylhexyl)orthophosphoric acid (HDEHP), or tri-n-butylphosphate (TBP) and hydrochloric acid, scandium is much less retained on the strongly acidic cation-exchange resin Dowex 50 than are all other members of the rare-earth group.

The effect of hydrofluoric acid on the cation exchange behavior of metal ions Robert Bart Brown Iowa State University Follow this and additional works at:https://lib.dr.iastate.edu/rtd Part of theAnalytical Chemistry Commons ... coefficients of titanium, scandium, germanium, and gallium on ...