Effect of solvent media and condensed benzene rings on thermochemical behaviour of dibenzo-18-crown-6 in solution |
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| Authors: | Barannikov Vladimir P. Guseynov Sabir S. Vyugin Anatoliy I. |
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| Affiliation: | (1) Departamento de Química, Facultad de Ciencias, Grupo de Investigación en Calorimetría, Universidad Nacional de Colombia, Los Andes, Colombia;(2) Departamento de Química, Facultad de Ciencias, Grupo de Investigación en Sólidos Porosos y Calorimetría, Universidad de Los Andes, Los Andes, Colombia |
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| Abstract: | The specific and non-specific interactions of twelve activated carbon cloth samples prepared from commercial cotton fabric, and that present different activation degrees are studied through the determination of immersion enthalpies in CCl4 and H2O, and in aqueous solutions of NaOH and HCl. The immersion enthalpies found for the solvents CCl4 and H2O are in a range of 5.49–45.84 and 1.77–7.76 J g−1, respectively. The enthalpic values for the materials in aqueous solutions of NaOH and HCl, allow characterizing the chemical surface of these materials, which are in a range of 6.63 and 21.49 J g−1, finding through them important relations in company with other characterizing techniques used in the study of these materials. |
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| Keywords: | acidity activated carbon cloth adsorption isotherm basicity immersion calorimetry |
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