On the effect of basicity on the kinetics of CO2 absorption in tertiary amines

Benitez-Garcia, Javier; Ruiz-Ibanez, Gabriel; Al-Ghawas, Hani A.; Sandall, Orville C.

doi:10.1016/0009-2509(91)85161-p

Cited by 65 publications

(63 citation statements)

References 21 publications

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“…The points with concentrations up to 2.5 M are in good agreement with the results of Li et al (2007). However, the point obtained with concentration of 3.4 M is more in line with the results of Benitez-Garcia et al (1991) and Littel et al (1990). And finally, the point measured using a 5.1 M solution is close to the results of Sotelo et al (1990).…”

Section: Experimental Results and Modellingsupporting

confidence: 89%

“…The reinterpreted kinetic constants of Benitez-Garcia et al (1991) are in good agreement with the correlation proposed by Littel et al (1990). The reinterpreted data of Kim and Savage (1987) Special attention should be given to the data produced by Vaidya and Kenig (2009) for 2, 2.2, 2.5 and 3 M solutions, since they seem to indicate a possible concentration dependency in k 2 .…”

Section: Collection Of Reinterpreted Literature Datasupporting

confidence: 78%

“…3. The works of Sotelo et al (1990), Littel et al (1990) and Benitez-Garcia et al (1991) confirmed that the base-catalysis mechanism is likely.…”

Section: Reaction Mechanismmentioning

confidence: 85%

See 2 more Smart Citations

Kinetics of CO2 absorption by aqueous N,N-diethylethanolamine solutions: Literature review, experimental results and modelling

Monteiro

Knuutila

Elk³

et al. 2015

Chemical Engineering Science

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Section: Experimental Results and Modellingsupporting

confidence: 89%

Section: Collection Of Reinterpreted Literature Datasupporting

confidence: 78%

See 1 more Smart Citation

Kinetics of CO2 absorption by aqueous N,N-diethylethanolamine solutions: Literature review, experimental results and modelling

Monteiro

Knuutila

Elk³

et al. 2015

Chemical Engineering Science

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“…However, at pH values lower than 12, the rate of this reaction can be neglected [16]. The total rate of all CO 2 reactions in an aqueous solution is thus represented by the sum of the reaction rates given by Eqs.…”

Section: Base-catalyzed Hydration Mechanismmentioning

confidence: 99%

CO₂‐Alkanolamine Reaction Kinetics: A Review of Recent Studies

2007

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Alkanolamines are the most popular absorbents used to remove CO 2 from process gas streams. Therefore, the CO 2 reaction with alkanolamines is of considerable importance. The aim of this article is to provide an overview on the kinetics of the reaction of CO 2 with aqueous solutions of alkanolamines. The various reaction mechanisms that are used to interpret experimental kinetic data -zwitterion, termolecular and base-catalyzed hydration -are discussed in detail. Recently published data on reaction kinetics of individual amine systems and their mixtures are considered. In addition, the kinetic behavior of several novel aminebased solvents that have been proposed in the literature is analyzed. Generally, the reaction of CO 2 with primary, secondary and sterically hindered amines is governed by the zwitterion mechanism, whereas the reaction with tertiary amines is described by the base-catalyzed hydration of CO 2 .

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“…This tertiary amine is produced from diethylamine and ethylene oxide, whereas an ethyl group replaces the hydrogen atom of the amino group in EEA. The reaction between CO 2 and DEEA in aqueous solutions was earlier studied by Kim and Savage [4] at 323 K, by Spaninks et al [5] at 303 K and by Benitez-Garcia et al [6] at 298 K. This reaction is of the first order with respect to both CO 2 and DEEA. Kinetic data at various temperatures were reported by Sotelo et al [7], by Littel et al [8] and recently by Li et al [3] and by Vaidya and Kenig [9,10].…”

Section: Introductionmentioning

confidence: 91%

A Study on CO₂ Absorption Kinetics by Aqueous Solutions of N,N‐Diethylethanolamine and N‐Ethylethanolamine

Vaidya

Kenig

2009

Chem Eng & Technol

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N-Ethylethanolamine (EEA) and N,N-diethylethanolamine (DEEA) represent promising candidate alkanolamines for CO 2 removal from gaseous streams, as they can be prepared from renewable resources. In this work, the reaction rate constant for the reaction between CO 2 and EEA was determined from the absorption rate measurements of CO 2 in a blend comprising DEEA, EEA and H 2 O. A stirred-cell reactor with a plane, horizontal gas-liquid interface was used for the absorption studies. While the DEEA concentration in the formulated solution was varied in the range of 1.5-2.5 kmol/m 3 , the initial EEA concentration was 0.1 kmol/m 3 . A zwitterion mechanism for EEA and a base-catalyzed hydration mechanism for DEEA were used to describe the reaction kinetics. At 303 K, the second-order reaction rate constant for the CO 2 reaction with EEA was found to be 8041 m 3 /(kmol s). The liquid-side mass transfer coefficient was also estimated, and its value (0.004 cm/s) is in line with those typical of stirred-cell reactors.

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On the effect of basicity on the kinetics of CO2 absorption in tertiary amines

Cited by 65 publications

References 21 publications

Kinetics of CO2 absorption by aqueous N,N-diethylethanolamine solutions: Literature review, experimental results and modelling

Kinetics of CO2 absorption by aqueous N,N-diethylethanolamine solutions: Literature review, experimental results and modelling

CO₂‐Alkanolamine Reaction Kinetics: A Review of Recent Studies

A Study on CO₂ Absorption Kinetics by Aqueous Solutions of N,N‐Diethylethanolamine and N‐Ethylethanolamine

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On the effect of basicity on the kinetics of CO2 absorption in tertiary amines

Cited by 65 publications

References 21 publications

Kinetics of CO2 absorption by aqueous N,N-diethylethanolamine solutions: Literature review, experimental results and modelling

Kinetics of CO2 absorption by aqueous N,N-diethylethanolamine solutions: Literature review, experimental results and modelling

CO2‐Alkanolamine Reaction Kinetics: A Review of Recent Studies

A Study on CO2 Absorption Kinetics by Aqueous Solutions of N,N‐Diethylethanolamine and N‐Ethylethanolamine

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Product

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CO₂‐Alkanolamine Reaction Kinetics: A Review of Recent Studies

A Study on CO₂ Absorption Kinetics by Aqueous Solutions of N,N‐Diethylethanolamine and N‐Ethylethanolamine