Synthesis and characterization of amine-modified mesoporous silica SBA-3 and its application as CO2 adsorbent

CO2adsorption has been evaluated as one of the major options for reduction of CO2 emission which in turn results inreduction of global warming. Mesoporoussilicas can be effectively modified for CO2 adsorption with amine groups due to their high affinity for CO2.Amino-modified mesoporous SBA-3 materials were synthesized by 3-aminopropyl trimethoxysilane (APS) and ethylenediamine (EDA). CO2 adsorption capacity was measured by volumetric measurements at 298 K up to 5 bar. The adsorbents were characterized by Brunauer-Emmet-Teller (BET) method and Scanning electron microscopy (SEM). The SBA-3/APS exhibited higher volumetric capacity than SBA-3/EDA.

Keywords:

CO2adsorption , Mesoporoussilicas , 3-aminopropyl trimethoxysilane (APS) , Ethylenediamine (EDA)