Reaction mechanism and kinetics of aqueous solutions of 2-amino-2-methyl-1-propanol and carbon dioxide

Alper, Erdoğan

doi:10.1021/ie00104a023

Cited by 187 publications

(145 citation statements)

References 10 publications

(27 reference statements)

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“…Finally, it is impossible to determine what is the limiting step of the zwitterion mechanism. We reach the same conclusion for 2-amino-2-methyl-1-propanol with n = 1 (Alper, 1990b). In the case of a study of an amine with n = 2, (ethylethanolamine (Li et al, 2007)), kinetic constant k 0R 2 NH Dep can be determined but other constants are insensitive as they are first order kinetic constant according to the amine concentration.…”

Section: Indetermination Of the Zwitterion Modelsupporting

confidence: 76%

“…For example in the case of 2-amino-2-methyl-1-propanol studied by Alper (1990b), the concentration of amine varies between 25 and 1 486 mol.m À3 , correlated with variation of water concentration between 55 431 and 48 197 mol.m À3 according to the Equation (26) where q w is the density of water, M Am is the molecular weight of amine and M w is the molecular weight of water:…”

Section: Indetermination Of the Zwitterion Modelmentioning

confidence: 99%

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Kinetics of Carbon Dioxide with Amines. I. Stopped-Flow Studies in Aqueous Solutions. A Review

Couchaux

Barth

Jacquin

et al. 2013

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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Re´sume´-Cine´tique du dioxyde de carbone avec les amines -I. É tude par stopped-flow en solution aqueuse. Une revue -Il est possible de trouver de nombreuses informations sur la cine´tique de re´action amine-CO 2 dans la litte´rature. Toutefois, comme il existe plusieurs techniques expe´rimentales et plusieurs me´canismes re´actionnels possibles, on observe parfois une grande dispersion des re´sultats expe´rimentaux avec diverses interpre´tations. Dans cet article, une me´thode qui permet de comparer les constantes cine´tiques obtenues par diffe´rents auteurs est propose´e. D'abord nous pre´sentons les diffe´rentes techniques expe´rimentales et justifions de comparer les donne´es obtenues par la technique d'e´coulement a`flux bloque´. Ensuite nous repre´sentons les donne´es cine´tiques des diffe´rentes amines e´tudie´es dans la litte´rature a`partir d'une de´pendance en loi puissance en fonction de la concentration. Cette repre´sentation illustre certaines relations structure-proprie´te´et permet de confronter les donne´es expe´rimentales aux diffe´rents me´canismes propose´s. Les avantages et limites de chaque me´canisme sont discute´s. Finalement nous justifions l'utilisation d'un mode`le termole´culaire pour comparer les donne´es obtenues par diffe´rents auteurs. Ce mode`le conduit a`l'observation d'un phe´nome`ne de compensation qui est un argument en faveur du me´canisme correspondant.Abstract -Kinetics of Carbon Dioxide with Amines. I. Stopped-Flow Studies in Aqueous Solutions. A Review -It is possible to find plenty of information about kinetics of reaction between amine and carbone dioxide in the literature. However, there are several experimental techniques and several possible mechanisms which lead to observe sometimes high dispersion of experimental results with various interpretations. A method which enables to compare kinetic constant got by different authors is proposed in this work. First, we present experimental techniques and justify comparison of data obtained by stopped-flow technique. Then, we plot kinetic data for all amines studied in the literature by a power law dependency with the concentration. This representation illustrates some structureactivity relationships and enables to confront experimental results with the different mechanisms. Advantages and limits of each mechanism are discussed. Finally, we justify the choice of the termolecular model to compare data got by different authors. This model leads to a compensation effect which is an argument in favour of this mechanism.

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Section: Indetermination Of the Zwitterion Modelsupporting

confidence: 76%

Section: Indetermination Of the Zwitterion Modelmentioning

confidence: 99%

Kinetics of Carbon Dioxide with Amines. I. Stopped-Flow Studies in Aqueous Solutions. A Review

Couchaux

Barth

Jacquin

et al. 2013

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

View full text Add to dashboard Cite

show abstract

“…A review of various reaction kinetics of this process is available in published literature (Blauwhoff et al, 1984;Versteeg et al, 1996;Aboudheir et al, 2003;Vaidya and Kenig, 2007). Zwitterion mechanism which describes the reaction between CO 2 and MEA via the formation of a zwitterions, (a locally ionic, net neutral molecule) followed by deprotonation is the most accepted kinetic model for absorption of CO 2 in aqueous MEA (Astarita, 1961;Clarke, 1964;Hikita et al, 1977;Danckwerts, 1979;Penny and Ritter, 1983;Alper, 1990 and its low rate of hydrolysis to bicarbonate (HCO 3 -). The stoichiometry of this overall reaction explained why the CO 2 loading of MEA-solutions is limited to around 0.5 mol/mol.…”

Section: Chemical Kineticsmentioning

confidence: 99%

“…Most of the absorption experimental works assumed that the amine concentration did not change appreciably and the forward reaction dominated (Sada et al, 1976;Penny and Ritter, 1983;Alper, 1990). As a consequence, Equation 3.36 can be simplified further and results the following pseudo-first order reaction,…”

Section: Chemical Kineticsmentioning

confidence: 99%

Dynamic simulation of MEA absorption process for CO2 capture from power plants

Harun

Nittaya

Douglas

et al. 2012

International Journal of Greenhouse Gas Control

119

117

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“…A detailed description of the experimental arrangements of the stopped-flow equipment is given in the work by Alper. 29,30 During an experimental run, amine (DBN or TBD)/alcohol solution and freshly saturated carbon dioxide dissolved in alcohol were placed in sealed drive syringes in the sample unit. In each experimental run, a pneumatic air supply pushes two drive syringes into the conductivity detection cell.…”

mentioning

confidence: 99%

Experimental and theoretical investigation of the reaction between CO$_{2}$ and carbon dioxide binding organic liquids

Tankal¹,

Orhan²,

Alper³

et al. 2016

Turk J Chem

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The reaction kinetics of CO 2 absorption into new carbon dioxide binding organic liquids (CO 2 BOLs) was comprehensively studied to evaluate their potential for CO 2 removal. A stopped-flow apparatus with conductivity detection was used to determine the CO 2 absorption kinetics of novel CO 2 BOLs composed of DBN (1,.0]non-5ene)/1-propanol and TBD (1,5,7-triazabicyclo[4.4.0]dec-5-ene)/1-butanol. A modified termolecular reaction mechanism for the reaction of CO 2 with CO 2 BOLs was used to calculate the observed pseudo-first-order rate constant k 0 (s −1 ) and second-order reaction rate constant k 2 (m 3 /kmol.s). Experiments were performed by varying organic base (DBN or TBD) weight percentage in alcohol medium for a temperature range of 288-308 K. It was found that k 0 increased with increasing amine concentration and temperature. By comparing using two different CO 2 BOL systems, it was observed that the TBD/1-butanol system has faster reaction kinetics than the DBN/1-propanol system. Finally, experimental and theoretical activation energies of these CO 2 BOL systems were obtained and compared. Quantum chemical calculations using spin restricted B3LYP and MP2 methods were utilized to reveal the structural and energetic details of the single-step termolecular reaction mechanism.

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Reaction mechanism and kinetics of aqueous solutions of 2-amino-2-methyl-1-propanol and carbon dioxide

Cited by 187 publications

References 10 publications

Kinetics of Carbon Dioxide with Amines. I. Stopped-Flow Studies in Aqueous Solutions. A Review

Kinetics of Carbon Dioxide with Amines. I. Stopped-Flow Studies in Aqueous Solutions. A Review

Dynamic simulation of MEA absorption process for CO2 capture from power plants

Experimental and theoretical investigation of the reaction between CO$_{2}$ and carbon dioxide binding organic liquids

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