A Simplified Extractive Metallurgy Exercise to Demonstrate Selective Extraction of Copper
| Autor: | Alexandra M. Z. Slawin, Iain P. Sandison, Iain A. Smellie, Sarah Lamorte, Yusra Abdelhamid, William Sanders, David B. Cordes, Clement Elliott, Iain L. J. Patterson, Dominic M. Stewart, Samuel N. Walters, Cameron L. Carpenter-Warren |
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| Přispěvatelé: | University of St Andrews. School of Chemistry, University of St Andrews. Centre for Higher Education Research, University of St Andrews. EaSTCHEM |
| Rok vydání: | 2020 |
| Předmět: |
Laboratory Instruction
Applications of Chemistry education chemistry.chemical_element Coordination Compounds Extractive metallurgy UV−Vis Spectroscopy Education Coordination complex Problem Solving/Decision Making chemistry.chemical_compound Ultraviolet visible spectroscopy High School/Introductory Chemistry Phenol QD First-Year Undergraduate/General chemistry.chemical_classification Aqueous solution Chemistry Ligand DAS Hands-On Learning/Manipulatives General Chemistry QD Chemistry Oxime Combinatorial chemistry Copper Metallurgy Qualitative Analysis Interdisciplinary/Multidisciplinary |
| Zdroj: | Journal of Chemical Education. 97:1203-1207 |
| ISSN: | 1938-1328 0021-9584 |
| DOI: | 10.1021/acs.jchemed.9b00996 |
| Popis: | 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. Postprint |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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