Catalytic effect of metal oxides on CO2 absorption in an aqueous potassium salt of lysine

[Display omitted] We report the catalytic effects of metal oxides on the CO2 absorption rate in an aqueous potassium salt of l-lysine-HCl using the vapor liquid equilibrium method. The best CO2 absorption rate obtained through testing metal oxides in a highly concentrated potassium salt of amino aci...

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Bibliographic Details
Published inJournal of industrial and engineering chemistry (Seoul, Korea) Vol. 68; pp. 335 - 341
Main Authors Dharmalingam, Sivanesan, Park, Ki Tae, Lee, Ju-Yeol, Park, Il-Gun, Jeong, Soon Kwan
Format Journal Article
LanguageEnglish
Published Elsevier B.V 25.12.2018
한국공업화학회
Subjects
Aqueous amino acid salt
Catalytic effect
CO2 absorption
l-Lysine potassium salt
Mechanistic studies
Metal Oxides
화학공학
Catalytic effect
l-Lysine potassium salt
Metal Oxides
CO2 absorption
Aqueous amino acid salt
Mechanistic studies
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Summary:[Display omitted] We report the catalytic effects of metal oxides on the CO2 absorption rate in an aqueous potassium salt of l-lysine-HCl using the vapor liquid equilibrium method. The best CO2 absorption rate obtained through testing metal oxides in a highly concentrated potassium salt of amino acids (2.0M) was identified using CuO. The recyclability of the metal oxides was tested over three cycles. The catalyst CuO was found to enhance the absorption rate of CO2 by 61%. A possible mechanism was proposed based on NMR spectroscopy studies. Further, the effect of change in liquid absorbent viscosity on CO2 absorption is discussed.
ISSN:1226-086X
1876-794X
DOI:10.1016/j.jiec.2018.08.004