The kinetics of carbon dioxide capture by solutions of piperazine and N-methyl piperazine
by F. Pinar Gordesli, Erdogan Alper
International Journal of Global Warming (IJGW), Vol. 3, No. 1/2, 2011

Abstract: In this paper, kinetics and mechanism of the reaction between CO2 and piperazine (PZ) or n-methyl piperazine (NMP) in aqueous and alcoholic solutions were investigated using direct stopped-flow technique under a range of temperatures (278, 288 and 298 K). The results show that the reactions follow a single termolecular reaction mechanism and the reaction rate between CO₂ and aqueous PZ (2669_(278K), 11335_(288K), 18042_(298K) m³/kmol·s) is significantly higher than that of commonly employed amines, such as monoethanolamine (MEA). Our results strongly suggest that PZ and PZ derivatives can be used as promoters for CO₂ capture by sterically hindered amine solutions.

Online publication date: Thu, 29-Jan-2015

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