Ceramics-Silikáty 46 (1) 33-35 (2002)

CHARACTERIZATION OF SILICA SORBENTS BY SANS 

F. Szőcs, J. Plaček, I. Novák, S. Borbély, R. Gilles

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.

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