Electrochemical production of Cuprous iodide (cas 1335-23-5) using the anode-support system

Add time:09/05/2019    Source:sciencedirect.com

This paper describes the application of an anode-support system to the electrolytic production of Cuprous iodide (cas 1335-23-5) by the anodic dissolution of metallic copper in an acidic potassium iodide solution. At the cathode the reduction of iodine to iodide is carried out. It has been determined that it is possible to utilize in the process an AISI-316 L stainless steel mesh basket loaded with small pieces of high-grade copper scrap. Under the operating conditions used the AISI-316 L stainless steel remains passive and acts only as an electrical contact between the copper pieces and the external current source. As cathode system, an AISI-316 L stainless steel mesh surrounded by a polypropylene diaphragm was utilized. As recommended operating conditions, a solution of KI: 40 g dm−3 and I2 : 20 g dm−3, pH: 1.8±0.2, current density: 1.0 A dm−2, T: 20±1°C, can be used. Good quality cuprous iodide powder (99.8% purity) was obtained. The energy consumption was 0.21 kWh (kg CuI)−1.

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