Studies of a Mixed Adsorption Layer of Butan-1-ol and o-Toluidine on Mercury Electrode

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Title:Studies of a Mixed Adsorption Layer of Butan-1-ol and o-Toluidine on Mercury Electrode
Creators:
Sieńko, Dorota
Gugała, Dorota
Nieszporek, Jolanta
Jankowska, Joanna
Saba, Jadwiga
Journal or Publication Title:
Collection of Czechoslovak Chemical Communications, 67, 11, pp. 1579-1588
Uncontrolled Keywords:Surface pressure, Adsorption isotherm, Thermodynamics, Butanol, Alcohols, Surface charge density, Toluidine

Abstract

The results of thermodynamic analysis of <i>o</i>-toluidine adsorption on a mercury electrode in the presence of various butan-1-ol amounts complete our previous studies on properties of mixed adsorption layers of toluidine isomers-butan-1-ol. The values of the relative surface excess Γ'<sub>°T</sub> obtained for <i>o</i>-toluidine show that adsorption of this compound decreases with increasing of butan-1-ol concentration. Analysis of adsorption parameters derived from the Frumkin isotherm indicates that in the presence of 0.33 M BuOH in 1 M NaClO<sub>4</sub> with adjusted pH 3 as supporting electrolyte, ∆<i>G</i><sup>0</sup> values for <i>o</i>-toluidine are the highest and, at the same time, the strongest repulsive interaction occurs. In the presence of 0.11 M butan-1-ol, smaller values of ∆<i>G</i><sup>0</sup> for <i>o</i>-toluidine correspond to weaker repulsive interaction. Therefore the change of the Γ'<sub>°T</sub> value for <i>o</i>-toluidine as a function of butan-1-ol concentration is the result of mutual changes of ∆<i>G</i><sup>0</sup> and interaction constant <i>A</i> between adsorbate molecules. <p>

Title:Studies of a Mixed Adsorption Layer of Butan-1-ol and o-Toluidine on Mercury Electrode
Creators:
Sieńko, Dorota
Gugała, Dorota
Nieszporek, Jolanta
Jankowska, Joanna
Saba, Jadwiga
Uncontrolled Keywords:Surface pressure, Adsorption isotherm, Thermodynamics, Butanol, Alcohols, Surface charge density, Toluidine
Divisions:Life and Chemical Sciences > Institute of Organic Chemistry and Biochemistry > Collection of Czechoslovak Chemical Communications
Journal or Publication Title:Collection of Czechoslovak Chemical Communications
Volume:67
Number:11
Page Range:pp. 1579-1588
ISSN:0010-0765
E-ISSN:1212-6950
Publisher:Institute of Organic Chemistry and Biochemistry
Related URLs:
URLURL Type
http://dx.doi.org/10.1135/cccc20021579UNSPECIFIED
ID Code:2015
Item Type:Article
Deposited On:06 Feb 2009 17:14
Last Modified:06 Feb 2009 16:14

Citation

Sieńko, Dorota; Gugała, Dorota; Nieszporek, Jolanta; Jankowska, Joanna; Saba, Jadwiga (2002) Studies of a Mixed Adsorption Layer of Butan-1-ol and o-Toluidine on Mercury Electrode. Collection of Czechoslovak Chemical Communications, 67 (11). pp. 1579-1588. ISSN 0010-0765

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