Mercury capture on a supported chlorocuprate(II) ionic liquid adsorbent studied using operando synchrotron X-ray absorption spectroscopy

Roberto Boada, Giannantonio Cibin, Fergal Coleman, Sofia Diaz-Moreno, Diego Gianolio, Christopher Hardacre, Shusaku Hayama, John D. Holbrey, Rafin Ramli, Kenneth R. Seddon, Geetha Srinivasan, Malgorzata Swadzba-Kwasny

Research output: Contribution to journalArticle

9 Citations (Scopus)
208 Downloads (Pure)

Abstract

Mercury scrubbing from gas streams using a supported 1-butyl-3-methylimidazolium chlorocuprate(II) ionic liquid ([C4mim]2[Cu2Cl6]) has been studied using operando EXAFS. Initial oxidative capture as [HgCl3]– anions was confirmed, this was then followed by the unanticipated generation of mercury(I) chloride through comproportionation with additional mercury from the gas stream. Combining these two mechanisms leads to net one electron oxidative extraction of mercury from the gas with increased potential capacity and efficiency for supported ionic liquid mercury scrubbers.
Original languageEnglish
Pages (from-to)18946-18953
Number of pages8
JournalDalton Transactions
Volume45
Issue number47
Early online date09 Nov 2016
DOIs
Publication statusPublished - 2016

Keywords

  • Mercury
  • ionic liquid
  • EXAFS
  • HycaPure

ASJC Scopus subject areas

  • Inorganic Chemistry
  • Spectroscopy
  • Physical and Theoretical Chemistry

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