Preparation and chelation properties of polystyrene-divinylbenzene copolymer resins containing pyridylamines, salicylamine, and 2-thenylamine.

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概要

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• Bidentate and tridentate ligands, 2-pyridylmethylamine, <I>N</I>-[2-(2-pyridyl)ethyl]ethylenediamine, salicylamine, and 2-thenylamine are incorporated into polystyrene–2%-divinylbenzene copolymer beads. These chelating resins are evaluated for their chelation capacity toward transition metal ions (Co<SUP>2+</SUP>, Ni<SUP>2+</SUP>, Cu<SUP>2+</SUP>, and Zn<SUP>2+</SUP>) at various pH. The chelating resins containing pyridine derivatives show a high capacity and selectivity. The selectivity of the resins for the metal ions is in the order, Cu<SUP>2+</SUP>>>Ni<SUP>2+</SUP>>Co<SUP>2+</SUP>≥Zn<SUP>2+</SUP> which is in accord with the order of the formation constants of the introduced ligands. Separation of a metal ion mixture (Cu<SUP>2+</SUP>, Ni<SUP>2+</SUP>, Zn<SUP>2+</SUP>) into its components is undertaken by a column containing the chelating resin derived from <I>N</I>-[2-(2-pyridyl)ethyl]ethylenediamine. The present resins can also be used for the elimination of trace amount of harmful heavy metal ions such as Hg<SUP>2+</SUP> and CrO<SUB>4</SUB><SUP>2−</SUP>.

• 公益社団法人 日本化学会の論文

著者

• Kikuchi Atsushi

  Government Industrial Research Institute

• Suzuki Toshishige

  Government Industrial Research Institute

• Yokoyama Toshiro

  Government Industrial Research Institute

• Kimura Tetsuo

  Government Industrial Research Institute, Tohoku

関連論文

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• Preparation and chelation properties of polystyrene-divinylbenzene copolymer resins containing pyridylamines, salicylamine, and 2-thenylamine.
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