Structural Transformation Of Secondary Silica Inside The Porous Glasses According To Electron Microscopy And Small-Angle X-Ray Scattering

A set of self consistent methods such as transmission electron microscopy (TEM), small angle x-ray scattering (SAXS), porosimetry methods (Brunauer-Emmett-Teller analysis (BET), and mercury porosimetry) were used to investigate porous glass structure formation owing to structural transformation of thin disperse secondary silica in acid solution inside the leached liquation channels. The information on both size distribution function and the form of scattered particles in porous glasses as well on the fractal dimensions of the aggregates was compared with the parameters of liquation structure of phase separated glass and with the pore characteristics (average radius, volume & specific surface area of pores) of porous glasses.