(30b) Development of 3D-Printed Aminosilica Monoliths for CO2 capture
AIChE Annual Meeting
2017
2017 Annual Meeting
Materials Engineering and Sciences Division
Materials Innovations Inspired By Acrivos Award Winner Chris Jones I
Monday, October 30, 2017 - 8:19am to 8:38am
Amine-based materials have represented themselves as a promising class of CO2 adsorbents; however, their large-scale implementation requires their formulation into suitable structures. In this study, we report formulation of aminosilica adsorbents into monolithic structures through 3D printing technique. In particular, 3D-printed monoliths were fabricated using pre-synthesized silica-supported tetraethylenepentamine (TEPA) and poly(ethylenimine) (PEI) adsorbents using three different approaches. In addition, a 3D-printed bare silica monolith was prepared and post-functionalized with 3-aminopropyltrimethoxysilane (APS). Characterization of the obtained monoliths indicated that aminosilica materials retained their characteristics after being extruded into 3D-printed configurations. Adsorptive performance of amine-based structured adsorbents was also investigated in CO2 capture. Our results indicated that aminosilica materials retain their structural, physical, and chemical properties in the monoliths. In addition, the aminosilica monoliths exhibited adsorptive characteristics comparable to their corresponding powders. This work highlights the importance of adsorbent materials formulations into practical contactors such as monoliths, as the scalable technology platform, that could facilitate rapid deployment of adsorption-based CO2capture processes on commercial scales.
Reference
H. Thakkar et al. ACS. Mater. Interfaces, 2017, 9 (8), 7489-7498.