Behavior of Silver-Thiourea Complexes in Nafion Resin

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Abstract

The behavior of silver-thiourea complexes in Nafion 117 resin was investigated with thiourea sorption and sodium-silver ion-exchange experiments. It was observed that the sorption of thiourea by the Ag-form of the ion exchanger was much higher than that obtained with the H- and Na-forms. The thiourea to silver molar ratio within the resin was found to be about 1.8. In the presence of thiourea, the fraction of silver species in the ion exchanger was about 20% greater than that in the absence of this ligand. The strong interaction between the silver-thiourea species and Nafion material may be attributed to the formation of an insoluble Ag2T3(SO3R)2compound inside the ion exchanger.

Original languageEnglish (US)
Pages (from-to)1077-1084
Number of pages8
JournalSeparation Science and Technology
Volume28
Issue number4
DOIs
StatePublished - Mar 1 1993

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Process Chemistry and Technology
  • Filtration and Separation

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