ABSTRACT
Many papers and monographs (e.g., Refs l-5) have been dedicated to the investigation of adsorption properties and surface chemistry of silica. Silica is one of the most important adsorbents used in chemical technology and chromatography, for immobilization of enzymes, as a catalyst support, as well as a filler for polymer materials and raw materials for optical products and so forth. Through the study of surface chemistry of silica, intermolecular interaction at adsorption on silica as well as the mechanism of adsorption on silica has become of great importance. Many
For the investigation of silica surface chemistry different physicochemical methods are used, such as adsorption, adsorption calorimetry, chromatography, and optical and nuclear magnetic resonance (NMR) spectroscopy. Infrared (IR) spectroscopy has proved to be one of the most informative methods of investigation of silica surface chemistry, which makes it possible to determine both qualitative and quantitative compositions of functional groups on silica surfaces and inside silica particles, as well as observe the interactions of functional groups with adsorbed molecules and their participation in chemical reactions.
