Please use this identifier to cite or link to this item: https://dspace.upt.ro/xmlui/handle/123456789/1321
Title: Obtaining of pyrazine-2,3-dicarboxylic acid through electrochemical quinoxaline oxidation using copper alloys as anodes [articol]
Authors: Țăranu, B.O.
Popa, I.
Dragoș, A.
Ţăranu, Ioan
Dobrescu, M.
Vlătănescu, N.V.
Subjects: Electrochimie
Articol
Pyrazine-2,3-dicarboxylic acid
Quinoxaline
Copper alloy anodes
Current efficiencies
Substance efficiencies
Issue Date: 2010
Publisher: Timişoara: Editura Politehnica
Citation: Țăranu, B. O.. Obtaining of pyrazine-2,3-dicarboxylic acid through electrochemical quinoxaline oxidation using copper alloys as anodes. Timişoara: Editura Politehnica, 2010
Series/Report no.: Seria chimie şi ingineria mediului, Tom 55(69), fasc. 2 (2010);
Abstract: Previous studies have shown that quinoxaline (Q) oxidation with electrochemically regenerated KMnO4, with the formation of pyrazine-2,3-dicarboxylic acid (PDCA), is possible using Pt, Ni, stainless steel and Cu electrodes. In order to improve current knowledge and to expand the variety of electrodes used for the pyrazine-2,3-dicarboxilic acid (PDCA) production process, we investigated the behavior of the copper alloy anodes – brass and bronze. A laboratory electrolyser for PDCA synthesis with copper alloy anode was manufactured. Depending on the anode – copper, brass and bronze - the effect of various parameters on the current and substance efficiencies was investigated. These parameters are: anodic current density, amount of electricity, temperature and initial concentration of quinoxaline. The best performances of this electrolyser are ~88% current efficiencies on the brass electrode and up to 80% substance efficiencies on the bronze electrode, at a current density of 3,5 A/dm2. These performances are greater than those obtained on the copper anode.
URI: http://localhost:8080/xmlui/handle/123456789/1321
Appears in Collections:Articole stiintifice/Scientific articles

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