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\begin{document}

\title{Absorption of SO2 by triethylenetetramine in ether (alcohol)/H2O system}



\author[1]{Bin Zhao}%
\author[1]{Lulu Xu}%
\author[1]{yanxia niu}%
\author[2]{Fei Gao}%
\author[1]{Qingtao Sheng}%
\author[1]{Yugao Wang}%
\author[1]{Gang Liu}%
\author[1]{Jun Shen}%
\affil[1]{Taiyuan University of Technology}%
\affil[2]{Affiliation not available}%


\vspace{-1em}



  
  \date{May 10, 2024}


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\begin{abstract}
The use of organic solvents to remove SO2 from flue gas has the
advantages of low investment cost, convenient operation, high
efficiency, and reusability. We prepared three absorbents in this paper,
namely tetraethylenetetramine (TETA), triethylenetetramine /triethylene
glycol dimethyl ether (TriEDGME), and triethylenetetramine/triethylene
glycol dimethyl ether/H2O. The atmospheric bubbling method absorbs SO2.
The experimental results show that the three kinds of absorbents formed
white precipitates after adsorbing SO2. The infrared spectra analysis
and element analysis of the three types of precipitate showed that their
chemical structures were basically the same. The structural formula is
NH2(CH2)2NH(CH2)2NH3SO3NH2\selectlanguage{ngerman}·2H2O; the product was determined to be a
shaped crystal structure by XRD and SEM. In addition, the thermal
stability analysis of the product revealed that the product sublimed at
123 °C and decomposed at about 185 °C.%
\end{abstract}\selectlanguage{ngerman}%



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