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Biomaterials for CO2 Harvesting: From Regulatory Functions to Wet Scrubbing Applications.


ABSTRACT: A new series of 2-aminoethyl-benzene-based biomaterials, namely, dopamine (DOP), tyramine (TYR), phenylethylamine (PEA), and epinephrine (EPN), dissolved in dimethylsulfoxide (DMSO) have been investigated for CO2 capture upon activatiing their hydhydrochloride salts  with a NaOH pellet. Spectroscopic measurements, including ex situ ATR-FTIR, 1D and 2D NMR experiments have been applied to verify the formation of the sodium carbamate adducts (RR'N-CO2 - Na+). The emergence of new peaks in the IR spectra ranging between 1702 and 1735 cm-1 together with the chemical shift within 157-158 ppm in the 13C NMR, as well as with cross-peaks obtained by 1H-15N HSQC measurements at ca. 84 and 6.6 ppm verified the formation of RR'N-CO2 - Na+ products upon the chemical fixation of CO2. The CO2 sorption capacity of the examined biomaterials was evaluated volumetrically, with a maximum value of 8.18 mmol CO2·g-1 sorbent (36.0 (w/w)%, including both chemisorption and physisorption), for 5 (w/v)% solutions measured at 5 bar CO2 and 25 °C, for TYR and PEA. DFT calculations indicated that the intramolecular hydrogen bonding within the structural motif of EPN-N-CO2 - Na+ adduct provides an exceptional stability compared to monoethanolamine and other structurally related model compounds.

SUBMITTER: Assaf KI 

PROVIDER: S-EPMC6682029 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature

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Biomaterials for CO<sub>2</sub> Harvesting: From Regulatory Functions to Wet Scrubbing Applications.

Assaf Khaleel I KI   Qaroush Abdussalam K AK   Mustafa Farah M FM   Alsoubani Fatima F   Pehl Thomas M TM   Troll Carsten C   Rieger Bernhard B   Eftaiha Ala'a F AF  

ACS omega 20190702 7


A new series of 2-aminoethyl-benzene-based biomaterials, namely, dopamine (DOP), tyramine (TYR), phenylethylamine (PEA), and epinephrine (EPN), dissolved in dimethylsulfoxide (DMSO) have been investigated for CO<sub>2</sub> capture upon activatiing their hydhydrochloride salts  with a NaOH pellet. Spectroscopic measurements, including ex situ ATR-FTIR, 1D and 2D NMR experiments have been applied to verify the formation of the sodium carbamate adducts (RR'N-CO<sub>2</sub> <sup>-</sup> Na<sup>+</s  ...[more]

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