CO2 absorption kinetics of 4-diethylamine-2-butanol solvent using stopped-flow technique

Abstract In the present work, a stopped-flow apparatus was used to determine the CO 2 absorption kinetics of 4-diethylamine-2-butanol (DEAB) in terms of observed pseudo-first-order rate constant ( k 0 ) and second order reaction rate constant ( k 2 ). The experiments were done using DEAB in the concentration range of 0.10–0.90 kmol/m 3 , and a temperature range of 293–313 K. The p K a of DEAB was also experimentally determined over a temperature range of 278–333 K. The Bronsted relationship between the reaction rate constant obtained from the stopped-flow apparatus and p K a obtained from experimental determination was then evaluated. The results showed that the Bronsted correlation could predict the absorption rate constant with an AAD of 8.6%, which is within an acceptable range of 10%. By comparing through different evaluation techniques such as k 2 , p K a and Δ r G m ° , it was observed that DEAB has faster reaction kinetics than those of conventional tertiary amines, namely, DEMEA, DMMEA and MDEA.

[1]  A. Henni,et al.  Reaction kinetics of 2‐((2‐aminoethyl) amino) ethanol in aqueous and non‐aqueous solutions using the stopped‐flow technique , 2013 .

[2]  Sami H. Ali,et al.  Reaction kinetics of some secondary alkanolamines with carbon dioxide in aqueous solutions by stopped flow technique , 2002 .

[3]  P. Tontiwachwuthikul,et al.  Reaction kinetics of CO2 in aqueous ethylenediamine, ethyl ethanolamine, and diethyl monoethanolamine solutions in the temperature range of 298-313 K, using the stopped-flow technique , 2008 .

[4]  Zhiwu Liang,et al.  1D absorption kinetics modeling of CO2–DEAB–H2O system , 2013 .

[5]  Paitoon Tontiwachwuthikul,et al.  Mass Transfer Performance of CO2 Absorption into Aqueous Solutions of 4-Diethylamino-2-butanol, Monoethanolamine, and N-Methyldiethanolamine , 2012 .

[6]  Geert Versteeg,et al.  On the kinetics between CO2 and alkanolamines both in aqueous and non-aqueous solutions—II. Tertiary amines , 1988 .

[7]  Sami H. Ali.  Kinetics of the reaction of carbon dioxide with blends of amines in aqueous media using the stopped-flow technique , 2005 .

[8]  A. Mohsenipour,et al.  Drag reduction in turbulent pipeline flow of mixed nonionic polymer and cationic surfactant systems , 2013 .

[9]  Erdogan Alper,et al.  Reaction mechanism and kinetics of aqueous solutions of 2-amino-2-methyl-1-propanol and carbon dioxide , 1990 .

[10]  G. Versteeg,et al.  Kinetics of Carbon Dioxide with tertiary Amines in aqueous solution , 1990 .

[11]  R. Weiland,et al.  Absorption of carbon dioxide in ethylenediamine solutions i. absorption kinetics and equilibrium , 1971 .

[12]  G. Maurer,et al.  Dissociation Constant of N-Methyldiethanolamine in Aqueous Solution at Temperatures from 278 K to 368 K , 1996 .

[13]  Zhiwu Liang,et al.  Comprehensive mass transfer and reaction kinetics studies of a novel reactive 4-diethylamino-2-butanol solvent for capturing CO2 , 2013 .

[14]  A. Henni,et al.  Kinetics of carbon dioxide (CO2) with ethylenediamine, 3-amino-1-propanol in methanol and ethanol, and with 1-dimethylamino-2-propanol and 3-dimethylamino-1-propanol in water using stopped-flow technique , 2012 .

[15]  E. A. Guggenheim,et al.  CONTRIBUTION TO THE THEORY OF ACID AND BASIC CATALYSIS. THE MUTAROTATION OF GLUCOSE , 1927 .

[16]  Amr Henni,et al.  Part 5b: Solvent chemistry: reaction kinetics of CO2 absorption into reactive amine solutions , 2012 .

[17]  E. S. Hamborg,et al.  Dissociation constants and thermodynamic properties of alkanolamines , 2009 .

[18]  Teerawat Sema,et al.  Kinetics of CO2 absorption into a novel 1-diethylamino-2-propanol solvent using stopped-flow technique , 2014 .

[19]  F. Chowdhury,et al.  CO2 solubility and species distribution in aqueous solutions of 2-(isopropylamino)ethanol and its structural isomers , 2013 .

[20]  M. Oyevaar,et al.  The reaction between CO2 and diethanolamine at 298 K , 1989 .

[21]  A. L. L. East,et al.  pKa Values of Some Piperazines at (298, 303, 313, and 323) K , 2009 .

[22]  Teerawat Sema,et al.  Correlations for Equilibrium Solubility of Carbon Dioxide in Aqueous 4-(Diethylamino)-2-butanol Solutions , 2011 .

[23]  Amr Henni,et al.  Reaction Kinetics of CO2 in Aqueous 1-Amino-2-Propanol, 3-Amino-1-Propanol, and Dimethylmonoethanolamine Solutions in the Temperature Range of 298−313 K Using the Stopped-Flow Technique , 2008 .

[24]  S. S. Ashour,et al.  Absorption of Carbon Dioxide into Aqueous Blends of Diethanolamine and Methyldiethanolamine , 1995 .

[25]  M. Fahim,et al.  Kinetic study of reactive absorption of some primary amines with carbon dioxide in ethanol solution , 2000 .

[26]  Zhiwu Liang,et al.  Comprehensive mass transfer and reaction kinetics studies of CO2 absorption into aqueous solutions of blended MDEA–MEA , 2012 .

[27]  M. Sharma.  Kinetics of reactions of carbonyl sulphide and carbon dioxide with amines and catalysis by Brönsted bases of the hydrolysis of COS , 1965 .

[28]  D. Mclean,et al.  A fast response conductivity amplifier for chemical kinetics , 1974 .

[29]  S. Kazama,et al.  Synthesis and characterization of new absorbents for CO2 capture , 2013 .

[30]  Zhiwu Liang,et al.  13C NMR Spectroscopy of a Novel Amine Species in the DEAB–CO2–H2O system: VLE Model , 2012 .

[31]  T. L. Donaldson,et al.  Carbon Dioxide Reaction Kinetics and Transport in Aqueous Amine Membranes , 1980 .

[32]  Geert Versteeg,et al.  ON THE KINETICS BETWEEN CO2 AND ALKANOLAMINES BOTH IN AQUEOUS AND NON-AQUEOUS SOLUTIONS. AN OVERVIEW , 1996 .