Thin-layer chromatographic separation of trifluoroacetylacetone rare earth chelates

• Published in: BUNSEKI KAGAKU Vol. 20; no. 3; pp. 274 - 277
• Main Authors: TANIKAWA, Keiichi, ARAKAWA, Kiichi
• Format: Journal Article
• Language: English; Japanese
• Published: Tokyo The Japan Society for Analytical Chemistry 1971; Japan Science and Technology Agency
• ISSN: 0525-1931
• DOI: 10.2116/bunsekikagaku.20.274

Thin layer chromatographic separation of Ce(tfa)4, Ce(tfa)3, La(tfa)3, Pr(tfa)3, Sm(tfa)3, Dy(tfa)3, Ho(tfa)3 and Er(tfa)3 was carried out by using Eastman chromatogram cellulose sheet. The separation of Ce(tfa)4 and Ce(tfa)3 was possible by a single developer as benzene, toluene, cyclohexane and petroleum benzine. By using mixed solvents, the separation of Ce(tfa)4>Er(tfa)3>Dy(tfa)3 was done with petroleum benzine-acetylacetone (40 : 1) and the separation of Al(III) or Cr(III) and Cu(II) as well as that of rare earths was done with cyclohexaneacetylacetone (20 : 1). The Rf values were in the order, Al(tfa)3>Ho(tfa)3>Cu(tfa)2. The separation of La(tfa)3>Sm(tfa)3>Nd(tfa)3 was done by development with toluene-cyclohexane-acetic acid (30 : 20 : 1).