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A simplified extractive metallurgy exercise to demonstrate selective extraction of copper

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Author(s)

Iain Smellie, Yusra Abdelhamid, Cameron Lewis Carpenter-Warren, David Bradford Cordes, Clement Elliott, Sarah Lamorte, Iain L. J. Patterson, William Sanders, Iain P. Sandison, Alexandra Martha Zoya Slawin, Dominic M. Stewart, Samuel N. Walters

School/Research organisations

Abstract

A laboratory activity is described for senior high school or 1st year undergraduate level students that illustrates key concepts linked to extractive metallurgy. This experiment demonstrates preferential binding of a methoxyphenolic oxime ligand to Cu2+ in the presence of other transition metal ions in aqueous solution. The students are tasked to investigate the importance of the spatial relationship between the oxime and phenol group of two potential ligands by performing a series of short and simple tests. The objective is achieved by identifying which methoxyphenolic oxime ligand selectively and rapidly forms an isolable precipitate with Cu2+ ions. Only one of the potential ligands exhibits a clear preference for binding to Cu2+ and this can easily be identified visually (and confirmed by UV-visible spectroscopy if desired). The experiment has successfully been employed as part of an extracurricular laboratory course involving groups of 25-30 high school students.
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Details

Original languageEnglish
Pages (from-to)1203-1207
Number of pages4
JournalJournal of Chemical Education
Volume97
Issue number4
Early online date17 Feb 2020
DOIs
Publication statusPublished - 14 Apr 2020

    Research areas

  • High School/Introductory Chemistry, First-Year Undergraduate/General, Interdisciplinary/Multidisciplinary, Laboratory Instruction, Hands-On Learning/Manipulatives, Problem Solving/Decision Making, Applications of Chemistry, Coordination Compounds, Metallurgy, Qualitative Analysis, UV−Vis Spectroscopy

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