Molecular insights into the enhanced rate of CO2 absorption to produce bicarbonate in aqueous 2-amino-2-methyl-1-propanol

2017 ◽  
Vol 19 (47) ◽  
pp. 32116-32124 ◽  
Author(s):  
Haley M. Stowe ◽  
Gyeong S. Hwang
Keyword(s):  
Absorption Rate ◽  
Co2 Absorption ◽  
Tertiary Amines ◽  
Sterically Hindered ◽  
Sterically Hindered Amine

Facile reorganization of H2O molecules surrounding N of sterically hindered amine 2-amino-2-methyl-1-propanol, relative to tertiary amines, enhances CO2 absorption rate.

scholarly journals CO2 Absorption into Aqueous Amine Blends containing Benzylamine (BZA), Monoethanolamine (MEA), and Sterically Hindered/Tertiary Amines

2014 ◽  
Vol 63 ◽  
pp. 1835-1841 ◽  
Author(s):  
William Conway ◽  
Yaser Beyad ◽  
Paul Feron ◽  
Gilles Richner ◽  
Graeme Puxty
Keyword(s):  
Co2 Absorption ◽  
Tertiary Amines ◽  
Sterically Hindered

scholarly journals Fast and efficient CO2 absorption in non-aqueous tertiary amines promoted by ethylene glycol

2021 ◽  
Author(s):  
Meisi Chen ◽  
Feng Zhang ◽  
Xiemin Liu ◽  
Xingbang Hu ◽  
Youting Wu
Keyword(s):  
Mass Fraction ◽  
Absorption Rate ◽  
Normal Pressure ◽  
Co2 Absorption ◽  
Tertiary Amines ◽  
Absorption Performance ◽  
Regeneration Cycle ◽  
Higher Temperature ◽  
Regenerative Energy ◽  
C Nmr

With the catalytic induction of EG, anhydrous DMEA shows CO absorption performance via chemical binding and physical storage under normal pressure. Among the absorbents, pure DMEA can hardly absorb CO directly but when the zwitterionic alkylcarbonates are formed between CO and DMEA-EG which can be characterized by C NMR and FTIR, the absorption rate of CO will be improved at this time. An increasing the CO loading as the mass fraction of EG in DMEA-EG, 90wt.% EG captures up to 0.72 mol/mol. The amount of chemically bound and physically stored is directly dependent on temperature, within the range of 293 to 323K, an absorption-regeneration cycle can be formed in a closed vessel because of the zwitterion DMEA-EG-CO is unstable at the higher temperature. In other words, DMEA-EG-CO can be easily regenerated upon appropriate depressurization or heating, corresponding thermodynamic calculations prove that the regenerative energy of DMEA-EG-CO is 25.49kJ/mol.

Alternate Self-Regeneration of Stereocenters:  Enantioselective Generation of aC2-Symmetric Chiral Nitroxide and Its Reduction to the Corresponding, Highly Sterically Hindered Amine

1997 ◽  
Vol 62 (26) ◽  
pp. 9385-9387 ◽  
Author(s):  
Jacques Einhorn ◽  
Cathy Einhorn ◽  
Fabien Ratajczak ◽  
Isabelle Gautier-Luneau ◽  
Jean-Louis Pierre
Keyword(s):  
Sterically Hindered ◽  
Sterically Hindered Amine

Salts of ?-cyanoacrylic acid with sterically hindered tertiary amines

1992 ◽  
Vol 41 (1) ◽  
pp. 176-178 ◽  
Author(s):  
I. I. Kandror ◽  
B. D. Lavrukhin ◽  
M. A. Galkina ◽  
Yu. G. Gololobov
Keyword(s):  
Tertiary Amines ◽  
Cyanoacrylic Acid ◽  
Sterically Hindered

Effect of Potassium Carbonate Additive on CO2 Absorption in Lithium Zirconate Powder

1998 ◽  
Vol 547 ◽  
Author(s):  
T. Ohashi ◽  
K. Nakagawa
Keyword(s):  
Potassium Carbonate ◽  
Room Temperature ◽  
Absorption Rate ◽  
Co2 Absorption ◽  
The Past ◽  
Lithium Zirconate ◽  
Kinetics Of

AbstractLithium zirconate, which reacts with CO2 reversibly at temperatures over 500°C, is expected to find wider application than conventional CO2 absorbents, as the latter can be used only at room temperature. We examined the effect of potassium carbonate, which had usually been added to facilitate the formation of lithium zirconate in the past, on the kinetics of CO2 absorption reaction. The result shows that the CO2 absorption rate of lithium zirconate powder is extremely accelerated by the potassium carbonate additive. We conclude that this acceleration results from the formation of a eutectic carbonate composed of Li2CO3 and K2CO3.

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