This book examines the meso- and nanoscopic aspects of fluid adsorption in porous solids using
a non-invasive method of small angle neutron scattering (SANS) and small angle x-ray scattering
(SAXS). Starting with a brief summary of the basic assumptions and results of the theory of
small-angle scattering from porous media the author focuses on the practical aspects and
methodology of the ambient and high pressure SANS and SAXS experiments and corresponding data
analysis. It is illustrated with results of studies of the vapor and supercritical fluid
adsorption in porous materials published during the last decade obtained both for man-made
materials (e.g. porous fractal silica Vycor glass activated carbon) and geological samples
(e.g. sandstones shales and coal). In order to serve the needs of broad readership the
results are presented in the relevant context (e.g. petroleum exploration anthropogenic carbon
capture and sequestration ion adsorption in supercapacitors hydrogen storage etc.).
