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Title: A simple primary amide for the selective recovery of gold from secondary resources

Abstract

Waste electrical and electronic equipment (WEEE) such as mobile phones contains a plethora of metals of which gold is by far the most valuable. Herein a simple primary amide is described that achieves the selective separation of gold from a mixture of metals typically found in mobile phones by extraction into toluene from an aqueous HCl solution; unlike current processes, reverse phase transfer is achieved simply using water. Phase transfer occurs by dynamic assembly of protonated and neutral amides with [AuCl 4]– ions through hydrogen bonding in the organic phase, as shown by EXAFS, mass spectrometry measurements, and computational calculations, and supported by distribution coefficient analysis. In conclusion, the fundamental chemical understanding gained herein should be integral to the development of metal-recovery processes, in particular through the use of dynamic assembly processes to build complexity from simplicity.

Authors:
 [1];  [1];  [1];  [2];  [1]; ORCiD logo [1]
  1. Univ. of Edinburgh, Edinburgh (United Kingdom)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1326545
Grant/Contract Number:
AC05-00OR22725
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Angewandte Chemie (International Edition)
Additional Journal Information:
Journal Name: Angewandte Chemie (International Edition); Journal Volume: 55; Journal Issue: 40; Journal ID: ISSN 1433-7851
Publisher:
Wiley
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Doidge, Euan D., Carson, Innis, Tasker, Peter A., Ellis, Ross J., Morrison, Carole A., and Love, Jason B. A simple primary amide for the selective recovery of gold from secondary resources. United States: N. p., 2016. Web. doi:10.1002/anie.201606113.
Doidge, Euan D., Carson, Innis, Tasker, Peter A., Ellis, Ross J., Morrison, Carole A., & Love, Jason B. A simple primary amide for the selective recovery of gold from secondary resources. United States. doi:10.1002/anie.201606113.
Doidge, Euan D., Carson, Innis, Tasker, Peter A., Ellis, Ross J., Morrison, Carole A., and Love, Jason B. Wed . "A simple primary amide for the selective recovery of gold from secondary resources". United States. doi:10.1002/anie.201606113. https://www.osti.gov/servlets/purl/1326545.
@article{osti_1326545,
title = {A simple primary amide for the selective recovery of gold from secondary resources},
author = {Doidge, Euan D. and Carson, Innis and Tasker, Peter A. and Ellis, Ross J. and Morrison, Carole A. and Love, Jason B.},
abstractNote = {Waste electrical and electronic equipment (WEEE) such as mobile phones contains a plethora of metals of which gold is by far the most valuable. Herein a simple primary amide is described that achieves the selective separation of gold from a mixture of metals typically found in mobile phones by extraction into toluene from an aqueous HCl solution; unlike current processes, reverse phase transfer is achieved simply using water. Phase transfer occurs by dynamic assembly of protonated and neutral amides with [AuCl4]– ions through hydrogen bonding in the organic phase, as shown by EXAFS, mass spectrometry measurements, and computational calculations, and supported by distribution coefficient analysis. In conclusion, the fundamental chemical understanding gained herein should be integral to the development of metal-recovery processes, in particular through the use of dynamic assembly processes to build complexity from simplicity.},
doi = {10.1002/anie.201606113},
journal = {Angewandte Chemie (International Edition)},
number = 40,
volume = 55,
place = {United States},
year = {Wed Aug 24 00:00:00 EDT 2016},
month = {Wed Aug 24 00:00:00 EDT 2016}
}

Journal Article:
Free Publicly Available Full Text
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Cited by: 5works
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