Temperature Dependence of Chemisorption of Acetone on Silica–Alumina Gels

Acetone can cause problems in adsorption processes such as CO 2 drying prior to compression and pipeline transport. To investigate the temperature‐dependent adsorption (ADS) behavior of acetone on silica–alumina gels, ADS and desorption experiments were conducted between 50°C and 175°C, followed by concentration swing desorption (CSD), temperature programmed desorption (TPD), and thermogravimetric analysis (TGA). With increasing temperature, ADS exhibited an increasingly chemisorptive character. After ADS at 100–175°C, significant amounts of acetone and reaction products remained on the surface even after TPD and TGA. The results indicate chemical conversion of acetone and formation of thermally stable carbonaceous species, likely formed via aldol condensation.