Developing Efficient Amine-Containing Mesoporous CO2Adsorbent

Abstract

To control the increasing atmospheric CO2 and protect environment, it is feasible to load amines on porous materials forming new and efficient adsorbent. However, how to incorporate a large amount of amine onto the porous host with uniform dispersion is crucial to develop new CO2 capturers, and this short review highlights some our recent researches on this subject. We tried a new strategy to introduce tetraethylenepentamine (TEPA) into the as-synthesized SBA-15 occluded with P123 template, exploiting the template as the support to disperse amine and preparing new CO2 adsorbent with high capacity. When the as-synthesized MCM-41 was used to disperse TEPA, the CO2 adsorptive capability could be enhanced to 210 mg g-1. We also prepared the amine in situ coated meso-structured silica monolith, and the TEPA additive in synthesis not only provided the necessary basicity for hydrolysis of silica source, but also directly incorporated into the resulting mesoporous CO2 adsorbent. Apart from the advantage of saving time and energy in this synthesis, these TEPA containing monoliths owned a mechanistic strength of 64 N cm-2. Finally, the synthesis and CO2 adsorption performance of mesoporous superbasic materials are also reviewed.