Carbon dioxide capture under postcombustion conditions using amine-functionalized SBA-15: Kinetics and multicyclic performance. Issue 16 (2nd November 2018)

• Record Type: Journal Article
• Authors: Dey, Runa; Gupta, Rajender; Samanta, Arunkumar
• Is Part Of: Separation science and technology. Volume 53:Issue 16(2018)
• Page Start: 2683
• Page End: 2694
• Publication Date: 2018-11-02
• Subjects: Postcombustion CO2 capture -- mesoporous silica -- SBA-15 -- adsorption -- multicycle; Separation (Technology) -- Periodicals; 660.284205
• DOI: 10.1080/01496395.2018.1461114
• Languages: English
• ISSNs: 0149-6395

Abstract

ABSTRACT: In this work, ordered mesoporous SBA-15 was synthesized and functionalized by polyethyleneimine (PEI). The morphological properties were characterized by N2 adsorption/desorption, field–emission scanning electron microscopy (FE-SEM), high–resolution transmission electron microscopy (HR-TEM) and Fourier transform infrared (FTIR) spectroscopy methods. The carbon dioxide (CO2 ) uptake on the sorbents, kinetics of CO2 adsorption/desorption and long-term multicycle stability of PEI-impregnated sorbent were measured. An optimal amine loading of 50 wt.% showed a CO2 adsorption capacity ~3.09 mmol g −1 using 10% pre-humidified CO2 at 75°C. The presence of moisture in flue gas showed a promoting effect in CO2 sorption capacity. The temperature swing adsorption/desorption cycles showed excellent multicycle stability over 60 cycles during 65 h of operations under humid CO2 .