title: Application of zone melting techniques to metal chelate systems-I Concentration of trace amounts of aluminium in tris(acetylacetonato)chromium(III).
abstract: The possibilities of applying the zone melting technique to metal chelates are described and discussed. The technique has been applied to the system of tris(acetylacetonato)chromium(III)-tris-(acetylacetonato)aluminium(III). The concentrating effect is not dependent upon the initial concentration of the minor component, but on the rate of zone movement. When the rate is set at 15 mm hr , the value of the distribution coefficient, 0.55-0.64, is at a minimum, and may be assumed to be the equilibrium distribution coefficient under the conditions described.
authors.affiliation: Department of Organic Synthesis, Faculty of Engineering, Kyushu University, Fukuoka, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Kaneko
authors.forename: K
authors.initials: K
authors.lastname: Ueno