CARBON POROSITY DEVELOPMENT V/A SMALL ANGLE SCATTERING

I n t roduct ion Small angle scattering (SAS) techniques represent an alternative to gas adsorption methods with a number of advantages. SAS is sensitive to both "closed " and "open" pores, and in many cases offers a more complete description of porosity. SAS can also be applied to "wet " samples. Both X-rays (SAXS) and neutrons (SANS) can be produced at suitable wavelengths for SAS. Here we provide a summary of some selected results concerning the application of these techniques to porosity characterization in carbons and chars. Exper imenta l SANS was performed at the small angle neutron diffractometer located at the Intense Pulsed Neutron Source (IPNS) of the Argonne National Laboratory [1], using