On the Adsorption of Octanoic Acid at the Mercury/Electrolyte and Air/Water Interfaces

✍ Scribed by Antonis Avranas; Utz Retter; Klaus Lunkenheimer; Heinz Lohse

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 224 KB
• Volume: 189
• Category: Article
• ISSN: 0021-9797
• DOI: 10.1006/jcis.1997.4852

✦ Synopsis

dynamics are usually considerably changed by coadsorption

The adsorption of a purified solution of octanoic acid at the (6,7). As already reported in (7) it is indispensable to use mercury/solution and air/water interfaces was studied. The equisurfactant solutions with a sufficient grade of purity, called librium capacitance values were obtained by phase sensitive ac ''surface-chemically purity,'' by means of which interfering voltametry. From the concentration dependence of the capacitance effects of trace impurities at the air/solution interface.

and of the surface tension at 22 and 45ЊC, the adsorption isotherms

In this paper we studied the adsorption of purified soluwere evaluated by applying the Frumkin isotherm. Adsorption tions of octanoic acid at the air/solution and mercury/soluenergies, lateral interaction energies, and molecular surface areas tion interfaces. A stock solution was purified with the high obtained are compared for the two interfaces.