Copper ion reduction catalyzed by chloride ions

Autor:	Konrad G. Weil, Sabine Wasle, David Mendez Soares, Karl Doblhofer
Rok vydání:	2002
Předmět:	Reaction mechanism Chemistry General Chemical Engineering Inorganic chemistry chemistry.chemical_element Electrolyte Electrochemistry Chloride Copper Analytical Chemistry Reaction rate constant Galvanic cell medicine Cyclic voltammetry medicine.drug
Zdroj:	Journal of Electroanalytical Chemistry. 532:353-358
ISSN:	1572-6657
DOI:	10.1016/s0022-0728(02)01050-1
Popis:	The cathodic reduction of copper(II) is studied in the absence and in the presence of chloride ions (1×10−3≤cCl≤8×10−3 M) in an electrolyte that is comparable to galvanic copper baths (2.2 M H2SO4+0.3 M CuSO4). Experiments conducted with the electrochemical quartz-microbalance, largely under conditions of cyclic voltammetry, demonstrate the formation and reduction of CuCl on the copper surface. A mechanism of Cu(II) reduction with intermediate formation of CuCl is postulated. Its rate is comparable to that of chloride-free Cu(II) reduction. The enhancement of the reduction current observed in the presence of chloride is proposed to result from the fact that the mechanism involving CuCl mediation proceeds in parallel with the chloride-free path.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::46223c45c3ec804cf59eea3c47d253fc https://doi.org/10.1016/s0022-0728(02)01050-1 Zobrazit plný text záznamu Full Text from ScienceDirect