Chemical absorption kinetics over a wide range of contract time: Absorption of carbon dioxide into aqueous solutions of monoethanolamine

AIChE Journal ◽  
1976 ◽  
Vol 22 (1) ◽  
pp. 196-198 ◽  
Author(s):  
Eizo Sada ◽  
Hidehiro Kumazawa ◽  
Muhammad Arif Butt
Keyword(s):  
Carbon Dioxide ◽  
Aqueous Solutions ◽  
Absorption Kinetics ◽  
Chemical Absorption ◽  
Wide Range

Chemical absorption of carbon dioxide with triethanolamine in non-aqueous solutions

2006 ◽  
Vol 23 (1) ◽  
pp. 138-143 ◽  
Author(s):  
Sang-Wook Park ◽  
Byoung-Sik Choi ◽  
Jae-Wook Lee
Keyword(s):  
Carbon Dioxide ◽  
Aqueous Solutions ◽  
Chemical Absorption

Modeling and experimental study on the solubility and mass transfer of CO2 into aqueous DEA solution using a stirrer bubble column

RSC Advances ◽  
2016 ◽  
Vol 6 (109) ◽  
pp. 108075-108092 ◽  
Author(s):  
Hassan Pashaei ◽  
Ahad Ghaemi ◽  
Masoud Nasiri
Keyword(s):  
Carbon Dioxide ◽  
Mass Transfer ◽  
Experimental Study ◽  
Aqueous Solutions ◽  
Absorption Rate ◽  
Bubble Column ◽  
Chemical Absorption

In this research, the chemical absorption rate and solubility of carbon dioxide into DEA aqueous solutions were investigated in a stirrer bubble column.

Carbon dioxide chemical absorption using methylpiperidines aqueous solutions

Fuel ◽  
2017 ◽  
Vol 197 ◽  
pp. 194-200 ◽  
Author(s):  
María Castro ◽  
Diego Gómez-Díaz ◽  
José M. Navaza
Keyword(s):  
Carbon Dioxide ◽  
Aqueous Solutions ◽  
Chemical Absorption

scholarly journals Monoalkylcarbonate Formation in the System Monoethanolamine-water-carbon Dioxide

2021 ◽  
Author(s):  
Richard Behrens ◽  
Elmar Kessler ◽  
Kerstin Münnemann ◽  
Hans Hasse ◽  
Erik von Harbou
Keyword(s):  
Carbon Dioxide ◽  
Nmr Spectroscopy ◽  
Aqueous Solutions ◽  
Comprehensive Data ◽  
Wide Range ◽  
Carbon Dioxide Co2

In a recent study, we have shown by NMR spectrocopy that monoalkylcarbonates are formed in substantial amounts in aqueous solutions of the tertiary alkanolamine methyldiethanolamine (MDEA) upon loading with carbon dioxide (CO2). These species had been overlooked by most authors previously. In the present work, this study was extended to the primary alkanolamine monoethanolamine (MEA). Also here monoalkylcarbonates were found, but only at CO2 loadings above 0.5 mol CO2 per mol MEA. Both the amine and its carbamate form monoalkylcarbonates. The concentration of the monoalkylcarbonates was determined with C-13 NMR spectroscopy in a wide range of CO2 loadings, MEA concentrations, and temperatures. Based on this comprehensive data the chemical equilibirium constants of the formation of the monoalkylcarbonates were determined. (C) 2019 Elsevier B.V. All rights reserved.

scholarly journals Analysis of the possibility and molecular mechanism of carbon dioxide consumption in the Diels-Alder processes

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Karolina Kula ◽  
Agnieszka Kącka-Zych ◽  
Agnieszka Łapczuk-Krygier ◽  
Radomir Jasiński
Keyword(s):  
Carbon Dioxide ◽  
Molecular Mechanism ◽  
Lewis Acids ◽  
Chemical Reactivity ◽  
Carbon Dioxide Concentration ◽  
Diels Alder ◽  
Wide Range ◽  
Bet Analysis ◽  
Earth’S Climate ◽  
Step Mechanism

Abstract The large and significant increase in carbon dioxide concentration in the Earth’s atmosphere is a serious problem for humanity. The amount of CO2 is increasing steadily which causes a harmful greenhouse effect that damages the Earth’s climate. Therefore, one of the current trends in modern chemistry and chemical technology are issues related to its utilization. This work includes the analysis of the possibility of chemical consumption of CO2 in Diels-Alder processes under non-catalytic and catalytic conditions after prior activation of the C=O bond. In addition to the obvious benefits associated with CO2 utilization, such processes open up the possibility of universal synthesis of a wide range of internal carboxylates. These studies have been performed in the framework of Molecular Electron Density Theory as a modern view of the chemical reactivity. It has been found, that explored DA reactions catalyzed by Lewis acids with the boron core, proceeds via unique stepwise mechanism with the zwitterionic intermediate. Bonding Evolution Theory (BET) analysis of the molecular mechanism associated with the DA reaction between cyclopentadiene and carbon dioxide indicates that it takes place thorough a two-stage one-step mechanism, which is initialized by formation of C–C single bond. In turn, the DA reaction between cyclopentadiene and carbon dioxide catalysed by BH3 extends in the environment of DCM, indicates that it takes place through a two-step mechanism. First path of catalysed DA reaction is characterized by 10 different phases, while the second by eight topologically different phases.

Chemical Absorption of Carbon Dioxide into Aqueous Solution of Potassium Threonate

2010 ◽  
Vol 45 (4) ◽  
pp. 497-507 ◽  
Author(s):  
Kyu-Suk Hwang ◽  
Dae-Won Park ◽  
Kwang-Joong Oh ◽  
Seong-Soo Kim ◽  
Sang-Wook Park
Keyword(s):  
Carbon Dioxide ◽  
Aqueous Solution ◽  
Chemical Absorption

Mass Transfer From a Bubble in a Vertical Pipe

2011 ◽  
Author(s):  
Shogo Hosoda ◽  
Ryosuke Sakata ◽  
Kosuke Hayashi ◽  
Akio Tomiyama
Keyword(s):  
Carbon Dioxide ◽  
Mass Transfer ◽  
Bubble Diameter ◽  
Vertical Pipe ◽  
Oblate Spheroidal ◽  
Wide Range ◽  
Bubble Sizes ◽  
Small Bubbles ◽  
Taylor Bubbles

Mass transfer from single carbon dioxide bubbles in a vertical pipe is measured using a stereoscopic image processing method to develop a mass transfer correlation applicable to a wide range of bubble and pipe diameters. The pipe diameters are 12.5, 18.2 and 25.0 mm and the bubble diameter ranges from 5 to 26 mm. The ratio, λ, of bubble diameter to pipe diameter is therefore varied from 0.2 to 1.8, which covers various bubble shapes such as spherical, oblate spheroidal, wobbling, cap, and Taylor bubbles. Measured Sherwood numbers, Sh, strongly depend on bubble shape, i.e., Sh of Taylor bubbles clearly differs from those of spheroidal and wobbling bubbles. Hence two Sherwood number correlations, which are functions of the Peclet number and the diameter ratio λ, are deduced from the experimental data: one is for small bubbles (λ < 0.6) and the other for Taylor bubbles (λ > 0.6). The applicability of the proposed correlations for the prediction of bubble dissolution process is examined through comparisons between measured and predicted long-term bubble dissolution processes. The predictions are carried out by taking into account the presence of all the gas components in the system of concern, i.e. nitrogen, oxygen and carbon dioxide. As a result, good agreements for the dissolution processes for various bubble sizes and pipe diameters are obtained. It is also demonstrated that it is possible to evaluate an equilibrium bubble diameter and instantaneous volume concentration of carbon dioxide in a bubble using a simple model based on a conservation of gas components.

Hybrid – Slurry/Nanofluid systems as alternative to conventional chemical absorption for carbon dioxide capture: A review

2021 ◽  
Vol 110 ◽  
pp. 103415
Author(s):  
Hassan A. Salih ◽  
Jeewan Pokhrel ◽  
Donald Reinalda ◽  
Inas AlNashf ◽  
Maryam Khaleel ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Carbon Dioxide Capture ◽  
Chemical Absorption
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