caa a22 4500 475816064 CHVBK 20180406123810.0 cr unu---uuuuu 170329e20000501xx s 000 0 eng 10.1023/A:1003826712515 doi (NATIONALLICENCE)springer-10.1023/A:1003826712515 Electrochemical investigation of the adsorption behaviour of anhydrides and imides on iron in acid medium [Elektronische Daten] [E. Lazarova, S. Kalcheva, G. Neykov, T. Yankova, N. Stoyanov] The capacitance method was applied to the study of the adsorption of anhydrides and imides with different size of the anhydride and imide ring on iron electrodes in acid medium. It was found that the addition of anhydrides and imides to sulphuric acid solution leads to a decrease in the electrode double layer capacitance. The latter is determined by the adsorption of the compounds investigated. Verifying the validity of Frumkin's isotherm adsorption parameters which characterize the interaction forces between the species in the adsorbed layer, their maximum surface excess, as well as the area occupied by a single adsorbate, were determined. The data obtained, and those provided by quantum-chemical calculations of the partial electron charges and the geometric area of the organic molecules studied, form the basis of a discussion on the orientation of the species adsorbed. The inhibiting effect observed is explained in relation to the adsorption behaviour. Kluwer Academic Publishers, 2000 adsorption nationallicence anhydrides nationallicence capacitance method nationallicence imides nationallicence iron electrode nationallicence Lazarova E. Department of Physical Chemistry, University of Chemical Technology and Metallurgy, 1756, Sofia, Bulgaria aut Kalcheva S. Department of Physical Chemistry, University of Chemical Technology and Metallurgy, 1756, Sofia, Bulgaria aut Neykov G. Institute for Foreign Students, 1111, Sofia, Bulgaria aut Yankova T. Department of Chemistry, Technical University of Russe, 7016, Russe, Bulgaria aut Stoyanov N. Department of Chemistry, Technical University of Russe, 7016, Russe, Bulgaria aut Journal of Applied Electrochemistry Kluwer Academic Publishers 30/5(2000-05-01), 561-570 0021-891X 30:5<561 2000 30 10800 https://doi.org/10.1023/A:1003826712515 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1003826712515 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lazarova E. Department of Physical Chemistry, University of Chemical Technology and Metallurgy, 1756, Sofia, Bulgaria aut NATIONALLICENCE 700 1- Kalcheva S. Department of Physical Chemistry, University of Chemical Technology and Metallurgy, 1756, Sofia, Bulgaria aut NATIONALLICENCE 700 1- Neykov G. Institute for Foreign Students, 1111, Sofia, Bulgaria aut NATIONALLICENCE 700 1- Yankova T. Department of Chemistry, Technical University of Russe, 7016, Russe, Bulgaria aut NATIONALLICENCE 700 1- Stoyanov N. Department of Chemistry, Technical University of Russe, 7016, Russe, Bulgaria aut NATIONALLICENCE 773 0- Journal of Applied Electrochemistry Kluwer Academic Publishers 30/5(2000-05-01), 561-570 0021-891X 30:5<561 2000 30 10800 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer