Detemination of OH Surface Density of SiO2 by Thermal Gravimetric Analysis (TGA) (CAT#: STEM-ACT-0039-WXH)

Introduction

The surface of all metal and metalloid oxides is covered to varying degrees by hydroxyl groups or ions, which play an important role in the adsorption processes occurring at the oxide surface.
Silica powders are widely used in industry as fillers, catalysts, catalyst supports, adsorbents, and chromatographic agents, to name just a few. In each of these applications, knowledge of the surface properties is required in order to understand the physicochemical principles involved.