Abstract
Triethylamine in air was removed by using the silicagel made from the water glass. Triethylamine react with the silanol groups which exits on the surface of silicagel, and is fixed on silicagel.
In the heat analysis and IR analysis, the amount of the silanol groups changes by heat-treating and condensation reaction of silanol groups started at 200°C and ended at 600°C. The mount of the removal of the triethylamine has decreased along with this when the condensation reaction.
Triethylamine fixed on silicagel was easily excluded by the acid processing, and became former silicagel. There was no change in the removeal performance of the triethylamine though this processing was repeated 20 times.
The highest removal rate was 0.36g of trietylamine/1.0g of silicagel.
