. 2019 Jul 2;4(7):11532–11539. doi: 10.1021/acsomega.9b00978

Table 1. Volumetric Uptake Measurements^a of 5 (w/v)% Solutions of Different 2-Aminoethyl-benzene-Based Moieties Dissolved in DMSO and Activated by a NaOH Pellet Using in Situ ATR-FTIR Autoclave Pressurized with 5 Bar CO₂ at 25 °C^b.

	EPN	DOP	TYR	PEA	MEA
pressure drop (bar)	0.4	0.2	0.6	0.6	0.8
sorption capacity mmol CO₂·g^–1 sorbent	1.64	0.82	2.46	2.46	3.27

scrubbing agent	sorption capacity (mmol CO₂·g^–1 sorbent)	mechanism of action/sequestered adduct	conditions
chitin/[Bmim]Cl,²⁷^c	2.17^d	physisorption	10 wt %, 30 °C, and 1 bar
chitosan/[Bmim]Cl,²⁷^c	4.64^d	physisorption and chemisorption/carbamate adduct	10 wt %, 30 °C, and 1 bar
chitin acetate/DMSO³⁰	3.63^e	supramolecular chemisorption/organic carbonate formation	10 (w/v)%, 25 °C, and 4 bar
oligo-chitosan/DMSO³¹	1.64^e	supramolecular chemisorption/organic carbonato-carbamato adduct	10 (w/v)%, 25 °C, and 4.2 bar
choline-based lysine IL³⁹	4.32^d	chemisorption/carbamic acid, carbamate adduct	ca. 1 g, 20 °C, and 1 bar

The amount of the sorbed CO₂ was calculated from the pressure drop obtained from the manometer, applying the equation of state of ideal gas (PV = nRT). The measurements were corrected against the physisorbed CO₂ using DMSO (1.4 bar) as a control sample.

In addition, a comparison with other nitrogen-rich bio-renewables reported in the literature is presented.

1-Butyl-3-methyl-imidazolium chloride.

Gravimetric uptake measurement.

Volumetric uptake measurement.

Table 1. Volumetric Uptake Measurementsa of 5 (w/v)% Solutions of Different 2-Aminoethyl-benzene-Based Moieties Dissolved in DMSO and Activated by a NaOH Pellet Using in Situ ATR-FTIR Autoclave Pressurized with 5 Bar CO2 at 25 °Cb.

Table 1. Volumetric Uptake Measurements^a of 5 (w/v)% Solutions of Different 2-Aminoethyl-benzene-Based Moieties Dissolved in DMSO and Activated by a NaOH Pellet Using in Situ ATR-FTIR Autoclave Pressurized with 5 Bar CO₂ at 25 °C^b.