Publikationsdatum:
2015-10-09
Beschreibung:
Adsorption behavior of nitrogen and carbon dioxide on Norit R1 Extra and AlO(OH) nanoparticles and hollow spheres were measured using a magnetic suspension balance. The experiments were performed at temperatures between 298 K and 328 K at pressures up to 23.5 MPa. Independent from the substrate investigated, all isotherms increase with increasing pressure, reach a maximum and then decrease with increasing pressure. In addition, selected experimental data were correlated with different model approaches and compared with reliable literature data. In case of CO 2 on AlO(OH) capillary condensation was observed at T = 298 K and 313 K. The results suggest that the conversion of the liquid into a supercritical adsorbate phase does not take place suddenly.
Print ISSN:
0930-7516
Digitale ISSN:
1521-4125
Thema:
Chemie und Pharmazie
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Werkstoffwissenschaften, Fertigungsverfahren, Fertigung