The role of Fe(III) and water in the oxidation of chalcopyrite
Selma Fabiana Bazan, Hélio Anderson Duarte, Guilherme Ferreira de Lima · 2026
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Description
Selma Bazan, Hélio Duarte, and Guilherme de Lima model first oxidation steps of a copper mineral, in work from 2026. Chalcopyrite is the main copper sulfide ore, but slow dissolving blocks cheap metal recovery. Oxidation is the key first step in leaching, and iron plus water drive that step in acid baths.
Quantum calculations compare two sulfur ended crystal faces for iron complex binding. Binding is stronger on one face, where paired bonds aid electron flow to the oxidant. A hydrogen shift path then forms a radical that attacks surface sulfur atoms. That path runs easily on the strong face but faces a huge barrier on the other. Stable products on the slow face may seal it.
Catalog record
| CREATOR | Selma Fabiana Bazan, Hélio Anderson Duarte, Guilherme Ferreira de Lima |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 26 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |