Radiotracer study of the adsorption of pimelic acid at a platinized platinum electrode

✍ Scribed by G. Horányi; E.M. Rizmayer

• Publisher: Elsevier Science
• Year: 1987
• Tongue: English
• Weight: 473 KB
• Volume: 32
• Category: Article
• ISSN: 0013-4686
• DOI: 10.1016/0013-4686(87)90033-8

✦ Synopsis

The adsorption of pimelic acid has been studied in 1 mol dm-' HCIOI supporting electrolyte.

The potential dependence of the adsorption, the mobility of the adsorbed species and the effect of other saturated aliphatic acids (acetic, malonic, succinic and adipic acids) and Cl-ions on the adsorption were investigated. A reversible adsorption was found in the potential range from 400 to 8OOmV. At lower potentials (lCQ-400 mV) a slow chernisorption takes place resulting in strongly chernisorbed species which can be eliminated by reduction and oxidation. The behaviour of loosely adsorbed species involved in the reversible process is similar to that observed for other saturated acids. A sequence for the relative adsorbability of different dicarboxylic acids was established on the basis of the experimental results. Factors influencing the adsorbability were discussed.