Electrochemical study of benzene on Pt of various surface structures in alkaline and acidic solutions
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Title: | Electrochemical study of benzene on Pt of various surface structures in alkaline and acidic solutions |
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Authors: | Montilla, Francisco | Morallon, Emilia | Vázquez Picó, José Luis |
Research Group/s: | Electrocatálisis y Electroquímica de Polímeros |
Center, Department or Service: | Universidad de Alicante. Departamento de Química Física |
Keywords: | Benzene | Platinum electrode | Oxidation | Cyclic voltammetry | FTIR spectroscopy |
Knowledge Area: | Química Física |
Date Created: | 5-Aug-2002 |
Issue Date: | 18-Sep-2002 |
Publisher: | Elsevier |
Citation: | MONTILLA JIMÉNEZ, Francisco; MORALLÓN NÚÑEZ, Emilia; VÁZQUEZ PICÓ, José Luis. "Electrochemical study of benzene on Pt of various surface structures in alkaline and acidic solutions". Electrochimica Acta. Vol. 47, Issue 27 (15 Oct. 2002). ISSN 0013-4686, pp. 4399-4406 |
Abstract: | The electrochemical behaviour of benzene on platinum electrodes (polycrystalline and single-crystal electrodes) has been studied in acidic and alkaline solutions. In acid solutions the reduction of benzene to cyclohexane takes place in all the platinum surface structure employed, however it does not occur in alkaline media (0.1 M NaOH). In this case, the hydrogen adsorption/desorption processes displace the adsorbed benzene from the electrode surface. The oxidation of benzene is also affected by the pH of the electrolyte and also by the surface structure of the platinum electrode used. In acid solutions, this oxidation at higher potentials (1.4 V vs. RHE) yields CO2, benzoquinone and α,β-unsaturated esters or lactones, however in alkaline media carbonate anions coming from CO2 and salts of carboxylic acids have been detected by in situ FTIR spectroscopy using a platinum polycrystalline electrode. Bulk electrolysis of benzene solutions using a platinum electrode in acid and alkaline media was performed in order to confirm the results obtained by spectroscopic measurements. |
Sponsor: | Generalitat Valenciana (GV01-313); Ministerio de Ciencia y Tecnología (MAT2001-1007). |
URI: | http://hdl.handle.net/10045/7823 |
ISSN: | 0013-4686 |
DOI: | 10.1016/S0013-4686(02)00520-0 |
Language: | eng |
Type: | info:eu-repo/semantics/article |
Peer Review: | si |
Publisher version: | http://dx.doi.org/10.1016/S0013-4686(02)00520-0 |
Appears in Collections: | INV - GEPE - Artículos de Revistas |
Files in This Item:
File | Description | Size | Format | |
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Electrochimica Acta 47 (2002) 4399-4406.pdf | Versión final (acceso restringido) | 184,92 kB | Adobe PDF | Open Request a copy |
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