ISSN 0862-5468 (Print), ISSN 1804-5847 (online) 

Ceramics-Silikáty 46, (1) 33 - 35 (2002)

Szőcs Ferenc 1, Plaček Jan 1, Novák Ivan 1, Borbély Sándor 2, Gilles Ralf 3
1 Polymer Institute SAS, Dúbravská cesta 9, 842 36 Bratislava, Slovak Republic
2 Research Institute for Solid State Physics, KFKI, Konkoly Thege Str. 29-33, 1525 Budapest, Hungary
3 Hahn-Meitner-Institute, Glieniker Str. 100, 14109 Berlin, Germany

Keywords: Silica sorbents, Pore size, Small-angle neutron scattering

Silica sorbents were prepared and investigated by small-angle neutron scattering (SANS). The surface area, pore volume, mean pore diameter and thickness of the pore walls determined by traditional adsorption technique are compared with the mean radius or correlation length determined by SANS method. The pore size determined by adsorption methods is far from the values of the scattering object size obtained by SANS method. It is supposed that the scattering objects in SANS are not pores but the walls of the pores.

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