caa a22 4500 463170601 CHVBK 20180406164812.0 cr unu---uuuuu 170326e20071201xx s 000 0 eng 10.1007/s10450-007-9063-z doi (NATIONALLICENCE)springer-10.1007/s10450-007-9063-z Liquid-phase adsorption experiments on ordered mesoporous silicas [Elektronische Daten] [R. Rockmann, G. Kalies, O. Klepel] SBA-15, SBA-16 and MCM-48 silicas with hexagonal $p\bar{6}mm$ , cubic $Im\bar{3}m$ and cubic $Ia\bar{3}d$ mesopore structure were synthesized according to known methods reported in literature and characterized by X-ray diffraction and nitrogen adsorption. Liquid-phase adsorption experiments were performed on all three materials. The adsorption behavior of binary liquid model mixtures was studied over the whole concentration range with regard to the separation quality of the solid and the dependence on the chain length of adsorptive molecules. Inverted U-shape isotherms were found indicating that the silicas are highly selective for polar components. So far, an influence of mesopore size or structure on liquid excess isotherms cannot be extracted from the measured data. The present work is a first step to create a data base of liquid-phase adsorption on solids with ordered mesopore structure. Springer Science+Business Media, LLC, 2007 Liquid-phase adsorption nationallicence Excess isotherms nationallicence Binary liquid mixtures nationallicence Chain length nationallicence Ordered mesoporous silicas nationallicence Gas adsorption nationallicence Γ i ( n ) : adsorption excess of component i, related to the mass of solid (mmol/g) or to the BET specific surface area of solid (μmol/m2) or to the total pore volume of solid (mmol/cm3) nationallicence n 2 σ ( n ) : excess amount of component 2, mmol nationallicence n 0 : total amount of component 1 and 2 in the original mixture, mmol nationallicence x 2 0 : mole fraction of component 2 before adsorption nationallicence x 2 : mole fraction of component 2 in adsorption equilibrium nationallicence m A : mass of adsorbent, g nationallicence Γ 2 s , h 1, U 1, U 2 : parameters of the Bi-Langmuir function (Bräuer et al. 2002) nationallicence T : temperature, K nationallicence R : gas constant, 8.314472 J/(mol K) nationallicence S BET : BET specific surface area, m2/g nationallicence V t : total pore volume, cm3/g nationallicence V mi : micropore volume, cm3/g nationallicence d me : average mesopore diameter, Å nationallicence Rockmann R. Wilhelm Ostwald Institute of Physical and Theoretical Chemistry, University of Leipzig, 2 Linnéstrasse, 04103, Leipzig, Germany aut Kalies G. Institute of Experimental Physics I, University of Leipzig, 5 Linnéstrasse, 04103, Leipzig, Germany aut Klepel O. Institute of Technical Chemistry, University of Leipzig, 3 Linnéstrasse, 04103, Leipzig, Germany aut Adsorption Springer US; http://www.springer-ny.com 13/5-6(2007-12-01), 515-522 0929-5607 13:5-6<515 2007 13 10450 https://doi.org/10.1007/s10450-007-9063-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10450-007-9063-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Rockmann R. Wilhelm Ostwald Institute of Physical and Theoretical Chemistry, University of Leipzig, 2 Linnéstrasse, 04103, Leipzig, Germany aut NATIONALLICENCE 700 1- Kalies G. Institute of Experimental Physics I, University of Leipzig, 5 Linnéstrasse, 04103, Leipzig, Germany aut NATIONALLICENCE 700 1- Klepel O. Institute of Technical Chemistry, University of Leipzig, 3 Linnéstrasse, 04103, Leipzig, Germany aut NATIONALLICENCE 773 0- Adsorption Springer US; http://www.springer-ny.com 13/5-6(2007-12-01), 515-522 0929-5607 13:5-6<515 2007 13 10450 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer