Reaction Kinetics and Dissociation constants of Tertiary Alkanolamines for Carbon Capture
type: CreativeWork
description: This research work studies the absorption kinetics of CO2 into aqueous solutions of four amines; {1-[Bis [3-(dimethylamino) propyl] amino]-2-propanol, N, n, n′, n′′, n′′-pentamethyldiethylenetriamine, N, n, n′, n′-tetrakis (2-hydroxyethyl) ethylenediamine, and N, n, n′, n′-tetrakis (2-hydroxypropyl) ethylenediamine}. The experimental results were reported in the form of secondorder reaction rate constants (k2). The kinetics data were measured using the Stopped-flow technique within an amine concentration range of 200 to 1000 mol/m3 and a temperature range of 298 to 318K. The equipment can determine the solution-based kinetics on a millisecond time scale by measuring the reaction rate of the reactants. The different tertiary alkanolamine solvents studied in this research work have no kinetics data published in the literature, and the solvents were selected the solvents for research studies because of their unique characteristics and properties. The experimental procedure was validated using kinetic experiments using a Methydiethanolamine (MDEA) solution prepared at concentrations ranging from 200 to 1000 mol/m3. Experimental pseudo-first order reaction rate constants were found to increase steadily with an increase in amine concentration and temperature. In terms of pseudo first-order constant, the reaction rates of CO2 absorption in 1-[Bis [3- (dimethylamino) propyl] amino]-2-propanol, N, n, n′′, n′′-pentamethyldiethylenetriamine and N, n, n′, n′-tetrakis (2-hydroxyethyl) ethylenediamine and N, n, n′, n′-tetrakis (2-hydroxypropyl) ethylenediamine were found to be faster than that of Methydiethanolamine at low concentrations and temperature. The values of pseudo-first order reaction rate constant increased steadily at higher concentrations and temperature. An aqueous solution of 1-[Bis [3-(dimethylamino) propyl] amino]-2-propanol has the best overall reaction rate at the experimental conditions when compared with the other amines studied. The values of the pseudo fir…
abstract: This research work studies the absorption kinetics of CO2 into aqueous solutions of four amines; {1-[Bis [3-(dimethylamino) propyl] amino]-2-propanol, N, n, n′, n′′, n′′-pentamethyldiethylenetriamine, N, n, n′, n′-tetrakis (2-hydroxyethyl) ethylenediamine, and N, n, n′, n′-tetrakis (2-hydroxypropyl) ethylenediamine}. The experimental results were reported in the form of secondorder reaction rate constants (k2). The kinetics data were measured using the Stopped-flow technique within an amine concentration range of 200 to 1000 mol/m3 and a temperature range of 298 to 318K. The equipment can determine the solution-based kinetics on a millisecond time scale by measuring the reaction rate of the reactants. The different tertiary alkanolamine solvents studied in this research work have no kinetics data published in the literature, and the solvents were selected the solvents for research studies because of their unique characteristics and properties. The experimental procedure was validated using kinetic experiments using a Methydiethanolamine (MDEA) solution prepared at concentrations ranging from 200 to 1000 mol/m3. Experimental pseudo-first order reaction rate constants were found to increase steadily with an increase in amine concentration and temperature. In terms of pseudo first-order constant, the reaction rates of CO2 absorption in 1-[Bis [3- (dimethylamino) propyl] amino]-2-propanol, N, n, n′′, n′′-pentamethyldiethylenetriamine and N, n, n′, n′-tetrakis (2-hydroxyethyl) ethylenediamine and N, n, n′, n′-tetrakis (2-hydroxypropyl) ethylenediamine were found to be faster than that of Methydiethanolamine at low concentrations and temperature. The values of pseudo-first order reaction rate constant increased steadily at higher concentrations and temperature. An aqueous solution of 1-[Bis [3-(dimethylamino) propyl] amino]-2-propanol has the best overall reaction rate at the experimental conditions when compared with the other amines studied. The values of the pseudo fir…
author: Aboaba, Akintunde Jolade
language: en
date published: 2017-09
date modified: 2026-07-24T04:03:47Z
provider: University of Regina
publisher: Networked Digital Library of Theses and Dissertations
type: WebPage
source organization: Faculty of Graduate Studies and Research, University of Regina

PropertyValue
property ID: Handle
value: https://hdl.handle.net/10294/8434

PropertyValue
property ID: DOI
value: 10.82465/4951