Biomaterials for CO₂Harvesting: 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 CO 2 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 2 – 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 13 C NMR, as well as with cross-peaks obtained by 1 H- 15 N HSQC measurements at ca. 84 and 6.6 ppm verified the formation of RR′N-CO 2 – Na + products upon the chemical fixation of CO 2 . The CO 2 sorption capacity of the examined biomaterials was evaluated volumetrically, with a maximum value of 8.18 mmol CO 2 ·g –1 sorbent (36.0 (w/w)%, including both chemisorption and physisorption), for 5 (w/v)% solutions measured at 5 bar CO 2 and 25 °C, for TYR and PEA. DFT calculations indicated that the intramolecular hydrogen bonding within the structural motif of EPN-N-CO 2 – Na + adduct provides an exceptional stability compared to monoethanolamine and other structurally related model compounds.

Recent Advances in the Chemistry of Metal Carbamates

“…Metal carbamates for CO 2 capture. The formation of metal carbamates from gaseous CO 2 and a metal amine complex has direct implications in the CO 2 capture and storage (CCS) technology [373][374][375][376][377]. In particular, amine-functionalized metal organic frameworks play an important role in the development of new solid sorbent materials [378].…”

In situ activation of green sorbents for CO2 capture upon end group backbiting

“…31 Furthermore, they can also be synthesized using green carbonylating agents such as propylene carbonate, as innovated by our research group, 32 CO 2 , 33,34 or scCO 2 . 35 Our recent findings on bio-renewables/materials, [36][37][38][39] fine chemicals, 22,[40][41][42][43][44] and natural/synthetic polymeric materials [45][46][47][48][49][50] serving as scaffolds for CO 2 sequestration/utilization unveil a newly developed strategy that can develop mechanistic approaches for CO 2 capture. 51,52 Several research groups [53][54][55][56] have studied the thermolysis of urethane with its derivative, illustrated by three separate individual steps.…”

CS2/CO2Utilization Using Mukaiyama Reagent as a (Thio)carbonylating Promoter: A Proof-of-Concept Study

“…As an augmentation to our research efforts on CO 2 capture using biorenewables, − biomaterials, , and small organic molecules/oligomers, , as well as CO 2 utilization catalyzed by poly­(ionic liquid)­s, organocatalysts, and metal oxide/inorganic complexes, − we provide a platform for the synthesis of olidines and olanes, including imidazolidin-2-one, oxazolidin-2-one, 1,3-dioxolan-2-one, 1,3-dithiolan-2-one, and their sulfur counterparts upon reacting CO 2 (CS 2 ) with ethylenediamine ( en ), monoethanolamine (MEA), ethylene glycol (EG), and ethane-1,2-dithiol (EDT), respectively, in the presence of CMPI as shown in Scheme .…”