Abstract
Amine adsorbents have been considered as a promising sorbent for CO2 capture, but amine agglomeration is a key challenge for the practical application. A series of adsorbents were successfully synthesized to enhance CO2 adsorption capacity by impregnating tetraethylenepentamine (TEPA) into KIT-1 with the long-alkyl chains template remaining (KIT-1-W). The results of thermogravimetric analysis (TGA), X-ray powder diffraction (XRD), N2 adsorption-desorption and Fourier transform infrared spectroscopy (FTIR) analysis studied the template and TEPA from qualifying and quantifying. KIT-1-W loaded with 50% TEPA (KIT-1-W-50) exhibited the maximum CO2 adsorption capacity of 4.19 mmol g-1 higher than the corresponding calcined KIT-1. Meanwhile, the role played by the template enhanced the dispersion of amine and provided more active sites according to the fitting results. Besides, the weaker strength of CO2-amine interaction for KIT-1-W-50 depressed the adsorption heat and boosted CO2 desorption. We presented an efficient way to explore the efficient adsorbents for CO2 capture.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
