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20 lut 2020 · A thorough review and critical evaluation of all experimental sulfur potential and phase diagram data available from the literature has been made for optimizing the Gibbs energy of the copper-sulfur liquid phase at 1 bar total pressure.
1 kwi 2017 · By burying the copper wire with plenty of sulfur and then heating the mix, the wire becomes completely submerged in liquid sulfur. The liquid sulfur then gets to react with the copper, and any oxygen that could possibly oxidize the copper would have to diffuse into the liquid sulfur before reaching the copper.
Indicates key paper F. Johannsen and H. Vollmer, “Study of Copper-Copper Sulfide System”, Z. Erzbergbau. Metallhuettenwes., 13, 313–322 (1960) in German. (Equi Diagram; Experimental; Information from this paper used in drawing evaluated phase diagrams) Google Scholar.
A one-step, corrosion-assisted reaction was developed to synthesize copper sulfide (CuS) from elemental copper and sulfur in water at 60 C. The as-prepared polycrystalline CuS consists of polyhedral-shaped 2e3 mm crystallites.
29 lut 2008 · This demonstration involves some fantastic chemistry and makes an excellent introduction to the use of quantitative calculations to find the formula of a reaction product, copper sulfide. Students will also get the chance to see some of the allotropes of sulfur.
In this experiment students study the behavior of copper in sulfur vapor, a piece of sulfur is heated and a picece of copper is held in the vapor in a test tube. The copper and sulfur combine to a new substance, which can be recognized from the change in color, density and other properties.
1 mar 2020 · In this paper, we investigated the influence of individual parameters on the recovery of copper from a synthetic copper sulfate solution using elemental sulfur and sulfur dioxide for the treatment of an acidic copper-containing solution originating from a heavy metal concentrate process.
