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

DOI: 10.1039/C6DT03014A DOI Help

Authors: Roberto Boada (Diamond Light Source) , Giannantonio Cibin (Diamond Light Source) , Fergal Coleman (Queen's University of Belfast) , Sofia Diaz-moreno (Diamond Light Source) , Diego Gianolio (Diamond Light Source) , Christopher Hardacre (Queen's University of Belfast) , Shusaku Hayama (Diamond Light Source) , John D. Holbrey (Queen's University of Belfast) , Rafin Ramli (QUILL, School of Chemistry and Chemical Engineering, The Queen's University of Belfast) , Keneth R. Seddon (Queen's University of Belfast) , Geetha Srinivasan (QUILL, School of Chemistry and Chemical Engineering, The Queen's University of Belfast) , Gosia Swadzba-kwasny (Queen's University of Belfast)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Dalton Trans.

State: Published (Approved)
Published: October 2016
Diamond Proposal Number(s): 2452 , 11881

Abstract: Mercury scrubbing from gas streams using a supported 1-butyl-3-methylimidazolium chlorocuprate(II)ionic liquid ([C4mim]2[Cu2Cl6]) has been studied using operandoEXAFS. 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.

Subject Areas: Chemistry, Energy, Environment

Instruments: B18-Core EXAFS , I20-Scanning-X-ray spectroscopy (XAS/XES)

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