Synthesis and CO₂ adsorption behavior of amine‐functionalized porous polystyrene adsorbent

Abstract

A solid amine adsorbent was prepared by modifying a porous polystyrene resin (XAD‐4) with chloroacetyl chloride through a Friedel–Crafts acylation reaction, followed by aminating with tetraethylenepentamine (TEPA). The adsorption behavior of CO2 from a simulated flue gas on the solid amine adsorbent was evaluated. Factors that could determine the CO2 adsorption performance of the adsorbents such as amine species, adsorption temperature, and moisture were investigated. The experimental results showed that the solid amine adsorbent modified with TEPA (XAD‐4‐TEPA), which had a longer chain, showed an amine efficiency superior to the other two amine species with shorter chains. The CO2 adsorption capacity decreased obviously as the temperature increased because the reaction between CO2 and amine groups was an exothermic reaction, and its adsorption amount reached 1.7 mmol/g at 10 °C in dry conditions. The existence of water could significantly increase the CO2 adsorption amount of the adsorbent by promoting the chemical adsorption of CO2 on XAD‐4‐TEPA. The adsorbent kept almost the same adsorption amount after 10 cycles of adsorption–desorption. All of these results indicated that amine‐functionalized XAD‐4 resin was a promising CO2 adsorbent. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45046.

Adsorption behavior and kinetics of CO2 on amine‐functionalized hyper‐crosslinked polymer

“…Figure displayed the thermal properties of XAD‐4, XAD‐4‐pc, PEI@XAD‐4, and PEI@XAD‐4‐pc. For XAD‐4 and XAD‐4‐pc, they only had one weight‐loss platform at about 450°C, suggesting that they possessed good thermal stability . Unfortunately, when PEI was loaded into XAD‐4‐pc, the weight loss of PEI@XAD‐4‐pc adsorbents occurred at relatively low temperature.…”

Study of rice husk ash derived MCM-41-type materials on pore expansion, Al incorporation, PEI impregnation, and CO2 adsorption

“…( 9). (9) where F is the uptake ratio of q t to q e . Because the plot of B t versus t is a straight line that passes through the origin, the intraparticle diffusion solely dominates the reaction rate, unless other processes such as film diffusion impact the reaction rate [63].…”

“…This attractive CO 2 solid adsorption technology has sparked widespread interest with an astonishing 2000 studies published between 2011 and 2014 [2]. Activated carbon [3], zeolites [4][5][6], metal-organic frameworks (MOFs) [7,8], polymers [9], clays [10], TiO 2 [11,12], nanotubes [13,14], silica gel [15], aerogel [16], and other porous solids have been successfully used as supports in previous studies. Among these candidates, after its first discovery by Mobil Corp. in 1992, MCM-41, a periodic silica-based molecular sieve with a highly ordered 2D hexagonal mesoporous structure, has gained considerable attention [17].…”

Experimental Study on Renewable Porous Carbon Dioxide Adsorbent Materials for Space Shuttles

“…The results showed that a dual-column TVSA with solid 13X could be a promising CO 2 capture technology. Liu et al [8] evaluated the adsorption behavior of CO 2 on solid amine adsorbent in simulated flue gas. The effects of amine, temperature, moisture and other factors on the CO 2 adsorption performance of the adsorbent were investigated.…”

“…The results showed that the chemical modification of PAN fiber with amine compounds could significantly improve the adsorption capacity of amine adsorbent for CO 2 . Liu et al [14] prepared solid amine adsorbents by the suspension polymerization of divinylbenzene (DVB) and acrylonitrile (AN), and then amination with TEPA. The factors affecting the adsorption performance of solid amine adsorbents for CO 2 , such as amine type, adsorption temperature and moisture, were investigated.…”