Korean Journal of Chemical Engineering

, Volume 23, Issue 5, pp 806–811

Absorption of carbon dioxide into non-aqueous solutions ofN-methyldiethanolamine

  • Sang-Wook Park
  • Joon-Wook Lee
  • Byoung-Sik Choi
  • Jae-Wook Lee
Article

DOI: 10.1007/BF02705932

Cite this article as:
Park, SW., Lee, JW., Choi, BS. et al. Korean J. Chem. Eng. (2006) 23: 806. doi:10.1007/BF02705932

Abstract

The chemical absorption rate of carbon dioxide was measured in non-aqueous solvents, which dissolved N-methyldiethanoamine (MDEA), such as methanol, ethanol, n-propanol, n-butanol, ethylene glycol, propylene glycol, and propylene carbonate, and water at 298 K and 101.3 kPa using a semi-batch stirred tank with a plane gas-liquid interface. The overall reaction rate constant obtained from the measured rate of absorption of carbon dioxide under the condition of fast pseudo-first-order reaction regime was used to get the apparent reaction rate constant, which yields the second-order reaction rate constant and the reaction order of the overall reaction. There was approximately linear dependence of the logarithm of the rate constant for the overall second-order reaction on the solubility parameter of the solvent. In non-aqueous solutions of (MDEA), dissolved carbon dioxide is expected to react with solvated (MDEA) to produce an ion pair.

Key words

Absorption Carbon Dioxide N-Methyldiethanoamine 

Copyright information

© Korean Institute of Chemical Engineering 2006

Authors and Affiliations

  • Sang-Wook Park
    • 2
  • Joon-Wook Lee
    • 1
  • Byoung-Sik Choi
    • 1
  • Jae-Wook Lee
    • 2
  1. 1.Division of Chemical EngineeringPusan National UniversityBusanKorea
  2. 2.Department of Chemical EngineeringSogang UniversitySeoulKorea

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