Experimentální studium adsorpce plynů na pevné sorbenty

Abstract

Gas adsorption process on to solid adsorbent is experimentally studied and reported here. General principles of adsorption covering the characterization of porous structures, examples of selected adsorbents and their properties, the mechanisms of adsorption and severe methods suitable for description of the porous structure are listed in theoretical part of this thesis. Experimental part is already focused on a particular problem associated with adsorption. It is a way of measuring the gas uptake (amount of gas adsorbed on solid adsorbent) at the wide range of pressures covering also high pressures up to 50 bar by a new device of gravimetric analysis. New apparatus TGA-HP50 made by TA-Instruments has been used. Detection of potential problems during experiments and their subsequent removal was another key point of the thesis. There are presented selected results of adsorption of nitrogen at two types of activated carbon and one type of zeolite sorbents. One of the activated carbon is a commercial material; the second one was prepared at our laboratory. Analysis of state properties (pressure and temperature) in the reactor during the test was also carried out in detail. It is evident, that newly employed experimental setup with high pressure reactor in combination with sensitive balance is more than suitable device for experimental study of adsorption process.