Bromide oxidation and bromine reduction in propylene carbonate

Autor:	V. Komnenic, Slavko Mentus, V. Vojinovic
Rok vydání:	2003
Předmět:	Bromine Chemistry General Chemical Engineering Inorganic chemistry chemistry.chemical_element Electrochemistry Analytical Chemistry chemistry.chemical_compound Bromide Propylene carbonate Iodide oxidation Cyclic voltammetry Rotating disk electrode Platinum
Zdroj:	Journal of Electroanalytical Chemistry. 547:109-113
ISSN:	1572-6657
DOI:	10.1016/s0022-0728(03)00174-8
Popis:	Bromide oxidation and bromine reduction in propylene carbonate (PC) +1 M LiClO 4 was investigated voltammetrically using polycrystalline platinum rotating disc electrode. The corresponding voltammograms were compared to those of iodide oxidation and HCl decomposition. The oxidation 2Br − →Br 2 +2e − was found to proceed through two steps, which are caused by the formation of a stable intermediate Br 3 − ion. The stability constant of tri-bromine ion was estimated to be 10 5.5 M. The diffusion coefficient of Br − ion in this solution was determined to be 3.41×10 −6 cm 2 s −1 . In the case of bromine reduction, a time dependence of the shape of the voltammogram was observed, which showed that one is dealing with a direct bromination of PC.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::bce7cf42d5870d5df50499006de0f472 https://doi.org/10.1016/s0022-0728(03)00174-8 Zobrazit plný text záznamu Full Text from ScienceDirect