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Observatoire Midi-Pyrénées |  |
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Observatoire Midi-Pyrénées | |
| HAL: hal-00189931, version 1 |
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| Journal of Electroanalytical Chemistry (2006) 19-26 |
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| A copper-palladium alloy usable as cathode material mode of formation and first examples of catalytic cleavages of carbon-halide bonds |
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| J. Simonet 1P. Poizot 2 |
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| (2006-06-01) |
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| A palladiated copper (Cu-Pd) interface of well-defined structure is formed by dipping a metallic copper substrate in solutions of palladium sulphate in 0.1 N sulphuric acid. Copper is quasi-immediately covered with a shiny metallic surface, which was characterized as corresponding to a CuPd phase dispersed at the copper interface in nanoparticles. This modified surface was successfully used as a new cathode in the field of bond cleavage reactions, in particular those of the carbon-iodide and carbon-bromide bonds. The accent is put on the potential shift between the use of a regular glassy carbon surface and this particular palladiated interface; the potential shift is so large that it enables the one-electron cleavage of C-I and C-Br bonds probably because transient free alkyl radicals are not electro-active at the potential at which the first electron transfer occurs. |
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| 1: | Institut des Sciences Chimiques de Rennes |
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CNRS : UMR6226 – Université de Rennes 1 – Institut National des Sciences Appliquées (INSA) - Rennes – Ecole Nationale Supérieure de Chimie de Rennes |
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| 2: | Laboratoire de Réactivité et de Chimie des Solides Amiens |
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Université de Picardie Jules Verne |
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| 3: | Laboratoire des Mécanismes et Transfert en Géologie (LMTG) |
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CNRS : UMR5563 – Observatoire Midi-Pyrénées – Université Paul Sabatier [UPS] - Toulouse III – Institut de recherche pour le développement [IRD] : UMR154 |
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| Subject | : | Physics/Physics/Chemical Physics Chemical Sciences/Organic chemistry |
| hal-00189931, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00189931 | |
| oai:hal.archives-ouvertes.fr:hal-00189931 | |
| From: Annie Delahaie | |
| Submitted on: Thursday, 22 November 2007 16:44:46 | |
| Updated on: Tuesday, 14 February 2012 11:54:30 | |
