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Heat of absorption of carbon dioxide (CO2) into aqueous N-methyldiethanolamine (MDEA) and N,N-dimethylmonoethanolamine (DMMEA)

Abstract

In this work the heat of absorption of CO2 into aqueous solutions of N-methyldiethanolamine (MDEA) and N,N- dimethylmonoethanolamine (DMMEA) has been investigated in a reaction calorimeter. The experiments were conducted at the concentrations 2 M and 4.2 M, and the temperatures 313 K, 353 K and 393 K. The resulting differential heats of absorption were plotted as a function of liquid CO2 loading. An effect of temperature on the heat of absorption was observed for MDEA. This effect was larger at low loadings and the lower amine concentration. This was also observed for DMMEA but here the effect of temperature was larger. The heat of absorption of CO2 into aqueous DMMEA is slightly larger than for MDEA.

Category

Academic article

Client

  • Research Council of Norway (RCN) / 200455

Language

English

Author(s)

  • Øystein Jonassen
  • Inna Kim
  • Hallvard Fjøsne Svendsen

Affiliation

  • Norwegian University of Science and Technology
  • SINTEF Industry / Process Technology

Year

2014

Published in

Energy Procedia

ISSN

1876-6102

Publisher

Elsevier

Volume

63

Page(s)

1890 - 1902

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