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\begin{document}

\title{Fast and efficient CO\textsubscript{2} absorption in non-aqueous
tertiary amines promoted by ethylene glycol}



\author[1]{Meisi Chen}%
\author[2]{Feng Zhang}%
\author[1]{Xiemin Liu}%
\author[1]{Xingbang Hu}%
\author[3]{Youting Wu}%
\affil[1]{Affiliation not available}%
\affil[2]{nanjing university}%
\affil[3]{Nanjing University}%


\vspace{-1em}



  
  \date{May 22, 2024}


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\begin{abstract}
With the catalytic induction of EG, anhydrous DMEA shows
CO\textsubscript{2} absorption performance via chemical binding and
physical storage under normal pressure. Among the absorbents, pure DMEA
can hardly absorb CO\textsubscript{2} directly but when the zwitterionic
alkylcarbonates are formed between CO\textsubscript{2} and DMEA-EG which
can be characterized by \textsuperscript{13}C NMR and FTIR, the
absorption rate of CO\textsubscript{2} will be improved at this time. An
increasing the CO\textsubscript{2} loading as the mass fraction of EG in
DMEA-EG, 90wt.\% EG captures up to 0.72 mol/mol. The amount of
chemically bound and physically stored is directly dependent on
temperature, within the range of 293 to 323K, an absorption-regeneration
cycle can be formed in a closed vessel because of the zwitterion
DMEA-EG-CO\textsubscript{2} is unstable at the higher temperature. In
other words, DMEA-EG-CO\textsubscript{2} can be easily regenerated upon
appropriate depressurization or heating, corresponding thermodynamic
calculations prove that the regenerative energy of
DMEA-EG-CO\textsubscript{2} is 25.49kJ/mol.%
\end{abstract}%



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