Indium adsorbent and indium fractioning method

Details Indium adsorbent and indium fractioning method Indium adsorbent and indium fractioning method

2005-07-07

2009-11-03

Menon, Krishnan S (Department: 1797)

Liquid purification or separation

Processes

Ion exchange or selective sorption

C210S656000, C210S502100, C210S198200, C423S624000, C526S310000

Reexamination Certificate

active

07611631

ABSTRACT:
The invention provides an indium adsorbent that can cause indium to be adsorbed, and a simple and inexpensive indium fractioning method for isolating and recovering high-purity indium from an acid solution whose primary component is hydrochloric acid and that contains indium. A primary component of the indium adsorbent is an anion-exchange resin that has a crosslinked structure produced by the copolymerization of styrene or acrylamide and divinylbenzene, and at least one of a quaternary ammonium group and a tertiary ammonium group, and that is provided with an acid-adsorbing ability. An acid solution whose primary component is hydrochloric acid and that includes indium is brought into contact with the anion-exchange resin to cause indium to be adsorbed to the anion-exchange resin.

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Sigma-Aldrich. Material Safety Data Sheet: DOWEX 1×8-200 Ion-Exchange Resin, CAS 69011-19-4. Apr. 21, 2004, 4 pages.

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