TY - JOUR
T1 - Amine-functionalised mesoporous silicas as CO2 adsorbents
AU - Knowles, Gregory Paul
AU - Delaney, Seamus William
AU - Chaffee, Alan Loyd
PY - 2005
Y1 - 2005
N2 - Mesoporous silica substrates were functionalized with 3-aminopropyltrimethoxysilane (apts) and aminoethylaminopropyltrimethoxysilane (aeapts) to form hybrid products suitable for CO2 adsorption. Combined thermogravimetric/differential thermal analysis (TGA/DTA) was used to determine CO2 adsorption capacities and heats of adsorption. The extent of surface functionalisation varied with substrate morphology. At 20°C reasonable CO2 adsorption capacities were observed under both dry and wet conditions. However, the heats of adsorption differed significantly; it is thought, due to simultaneous formation of bicarbonate species under wet conditions.
AB - Mesoporous silica substrates were functionalized with 3-aminopropyltrimethoxysilane (apts) and aminoethylaminopropyltrimethoxysilane (aeapts) to form hybrid products suitable for CO2 adsorption. Combined thermogravimetric/differential thermal analysis (TGA/DTA) was used to determine CO2 adsorption capacities and heats of adsorption. The extent of surface functionalisation varied with substrate morphology. At 20°C reasonable CO2 adsorption capacities were observed under both dry and wet conditions. However, the heats of adsorption differed significantly; it is thought, due to simultaneous formation of bicarbonate species under wet conditions.
U2 - 10.1016/S0167-2991(05)80301-5
DO - 10.1016/S0167-2991(05)80301-5
M3 - Article
SN - 0167-2991
VL - 156
SP - 887
EP - 896
JO - Studies in Surface Science and Catalysis
JF - Studies in Surface Science and Catalysis
ER -