An alumina membrane was studied by water adsorption in conjunction with sma
ll-angle neutron scattering (SANS). The SANS data were fitted according to
a polydisperse homogeneous permeable sphere model. Pore size distributions
and radial distribution functions were calculated for pores as small as 19
Angstrom too. The lower limit of the pore size distribution is in agreement
with the predictions of Kelvin equation. (C) 1999 Elsevier Science B.V. Al
l rights reserved.