The absolute majority of modern studies dealing with the interpretation of experimental data on the basis of the Freundlich isotherm ignore the fact that the data obtained for regions of low and moderate adsorbate concentration/pressure can be analytically continued within the Freundlich adsorption model to the adsorptive saturation area with coverages tending to 100%. Needless to say, this would give valuable extended information about the corresponding adsorption process. This message proposes a framework to comprehensively analyse experimental data first recognised as complying with the Freundlich adsorption model. An algorithm-driven method is presented which enables one to translate the data obtained in the area of small and moderate the coverages of the area of adsorptive saturation regime. As examples, three sets of experimental data for adsorption of mercury (II) on N-rich porous organic polymers and of protein on carrier nano-Mg(OH)₂ have been processed and presented according to the framework developed.

Investigations of carbon steel corrosion were conducted in the model stratum water saturated with hydrogen sulfide. Inhibitive properties of AMDOR IC‐6, that is, mixture of 10% aminoparafine C ₁₂ C ₁₈ and 10% imidazoline dissolved in specific mixture of organic solvents, EM‐10 (imino‐bis‐[(ethyl‐2)‐( C ‐alkyl of tall oil acids)‐(1,3‐diazocyclopenten‐2)]) and EM‐11 (1‐(3,6‐diazo‐8‐amine)‐( C ‐alkyl of coco oil acids)‐1,3‐diazocyclopenten‐2) have been studied by the electrochemical impedance spectroscopy (EIS) and for comparison by the weight loss and polarization measurements. The inhibitor concentration was equal to 25–200 mg/l. EIS measurements (60 kHz–10 mHz) were carried out at the corrosion potential ( E _cor ), anodic and cathodic polarization. The suggested equivalent circuit consists of four parallel branches and satisfactorily fits the experimental data obtained in the solutions with and without the inhibitors at E _cor . The observed values of double layer capacity C _dl < 1 µF/cm ² testify that multilayer adsorption of the inhibitors takes place on the electrode surface. It causes a retardation of the anodic reaction and slightly influences the cathodic one. Inhibitor efficiencies calculated on basis of impedance data qualitatively correlate with those obtained from the weight loss tests and the polarization measurements. Copyright © 2008 John Wiley & Sons, Ltd.

The nature of nanoscale effects in the nanodispersed materials and the transition of a compound to the nanostate are considered. Possible methods of achieving and maintaining the nanostate are suggested and experimentally observed examples are presented.

Published data on the influence of the effective nanoparticle size and the atomicity of clusters on the physicochemical properties of substances are considered. An interpretation is suggested for the analytical relations of the first and second laws of thermodynamics considered with conversion of the substance and the dependence of the chemical potential of reagents on the effective nanoparticle size taken into account.