Surface modified silica gels and an express method for determination of their specific surface area

  • 1 Technical University of Sofia, Bulgaria
  • 2 University of Chemical Technology and Metallurgy, Sofia, Bulgaria


Silica gels are one of the most widely used adsorbents. The best view of the properties of silicas as catalytic supports, adsorbents and other applications give the adsorption-texture parameters and especially the specific surface area. Hydrated silicon dioxide is amorphous (SiO2.nH2O),a reactive compound with various contains. Due to the serious practical interest of the determination of the specific surface area of materials many methods are developed and have found application. The study evaluates the impact of the surface and surface modification on the possibility of an express method for determination of specific surface areas of silica gels.



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