| 摘要 |
A process for extracting cesium ions from an aqueous solution, comprising: (a) producing, in a polar organic solvent, an adduct compound which is the product of (i) a macrocyclic polyether containing at least one species of the structural elements <IMAGE> I <IMAGE> II <IMAGE> III where, in structure I, n represents one of the numbers 0, 1 or 2, the -C- (C)n-O group forms part of the polyether ring and R1 is H, CH3, or phenyl, with up to 4 R1 not being H; in structure II, the -C-C-O- group forms part of the polyether ring and R2 is H, CH3, t-butyl, pentyl, heptyl, nonyl, (CH2)9CH3, or phenyl, with up to 2 R2 not being H; and in structure III, the -C-C-O group forms part of the polyether ring and R3 is H, CH3, t-butyl, pentyl, heptyl, nonyl, (CH2)9CH3, or phenyl, with up to 2 R3 not being H; with (ii) an inorganic complex acid or a salt of the inorganic complex acid, the acid or salt containing a multivalent element of the third main group, the fifth main group, or the second subgroup of the Periodic Table as the central atom, and as ligands, a plurality of atoms of an element of the seventh main group, or a plurality of phenyl radicals or cyano radicals, excluding the establishment of an adduct of dibenzo-18-crown-6 with sodium tetraphenylborate (DB-18-C-6/NaTPB); (b) bringing the aqueous solution containing cesium ions into contact with an adduct phase containing the adduct compound to extract the cesium from the aqueous phase into the adduct phase and thereby charge the adduct phase, and (c) separating the adduct phase charged with cesium ions from the aqueous solution.
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