Calculation of immersion enthalpy data from adsorption isotherms |
| |
Authors: | Kalies Grit Rockmann Rico Denoyel Renaud |
| |
Institution: | Wilhelm Ostwald Institute of Physical and Theoretical Chemistry, University of Leipzig, Linnéstr. 2, D-04175 Leipzig, Germany. kalies@rz.uni-leipzig.de |
| |
Abstract: | The thermodynamic equations for the calculation of binary and ternary immersion data in excess formalism are presented. Immersion enthalpies and entropies of the n-hexane/n-octane, n-octane/n-tetradecane and n-hexane/n-tetradecane binary mixtures as well as the n-hexane/n-octane/n-tetradecane ternary mixture on activated carbon are calculated from the temperature dependence of adsorption isotherms. In order to evaluate the quality of the calculations, the calculated immersion enthalpies of the binary mixtures on activated carbon are compared with those that were measured calorimetrically. It is shown that phenomenological thermodynamics can be used successfully to predict calorimetric data on the basis of adsorption excess isotherms. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|