Facile Determination of Dissolved Species in CO2-Amine-H2O System by NMR Spectroscopy

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  • Taiichiro Suda
    General Office of Nuclear and Fossil Power Production, The Kensai Electric Power Co., Inc
  • Toru Iwaki
    Hiroshima Research & Development Center, Mitsubishi Heavy Industries, Ltd
  • Tomio Mimura
    Environmental Research Center, The Kansai Electric Power Co., Inc

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Abstract

<jats:title>Abstract</jats:title> <jats:p>In order to clarify the characteristic behavior of dissolved state of CO2 in alkanolamine-H2O system five different kinds of alkanolamines were examined spectroscopically under the following conditions: 40 °C for 30 min to 120 min. NMR analysis indicated the presence of five chemical species such as carbamate ion, free amine, bicarbonate, carbonate, and protonated amine. Based on proton NMR, distribution of the respective species against molar loading of CO2 was successfully evaluated.</jats:p>

Journal

  • Chemistry Letters

    Chemistry Letters 25 (9), 777-778, 1996-09-01

    Oxford University Press (OUP)

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