Behaviour of gases and vapours in microporous phase of tissue systems of natural materials, adsorption and dissolution processes and their kinetitics


Grant No.:


Grant Agency:

Grant Agency of the Academy of Sciences of the CR (GAAVČR)

Resolved in:

2001 - 2003

Principal investigator:

Ing. Zuzana Weishauptová, CSc., Department of Geochemistry, IRSM AS CR, v.v.i.


For natural organic substances the presence of microporous phase composed from solid phase and a system of voids of molecular size is characteristic. The aim of the project is the study of processes running of their interface surface.
1. At substance where the sorption in the microporous phase is accompanied with dissolving of vapour and gas molecules in the solid phase which is connected with its swelling. It will be determined the critical pressure after its attainment the molecules of vapour and gases start to be absorbed in the solid phase.
2. The conditions will be investigated under which the desorption branch of the isotherm passes under the adsorption one.
3. The experimental and thermodynamics conditions of the exchange sorption for different pairs of gases taking part in these processes will be determined. To acquire the necessary values a gravimetric sorption device with high accuracy of measurement will be applied. Enthalpy and entropy of all processes will be calculated.

ISVAV: (What is it?)

Project in The Research and Development and Innovation System of the Czech Republic (in Czech only)