scholarly journals Synthesis and Comprehensive Study of Quaternary-Ammonium-Based Sorbents for Natural Gas Sweetening

Environments ◽  
2021 ◽  
Vol 8 (12) ◽  
pp. 134
Author(s):  
Maria E. Atlaskina ◽  
Artem A. Atlaskin ◽  
Olga V. Kazarina ◽  
Anton N. Petukhov ◽  
Dmitriy M. Zarubin ◽  
...  

The present study provides a solvent-free organic synthesis of quaternary ammonium salts: bis(2-hydroxyethyl)dimethylammonium taurate ([BHEDMA][Tau]) and bis(2-hydroxyethyl)dimethylammonium acetate ([BHEDMA][OAc]). These ionic compounds are promising materials for carbon dioxide capture processes, as mono sorbents, supplemental components in the conventional process of chemical absorption, and in the combined membrane approach for improving sorption efficiency. The synthesized compounds were characterized by 1H NMR and FT-IR spectroscopies and elemental analysis. Afterward, the sorption properties of the compounds were evaluated using the inverse gas chromatography (IGC) method, and their thermodynamic parameters were calculated in the temperature range of 303.15–333.15 K. The enthalpy change (∆sH) was less than 80 kJ·mol−1, indicated by the physical nature of sorption and also proved by FT-IR. Henry’s law constant in regard to carbon dioxide at 303.15 K was equal to 4.76 MPa for [BHEDMA][Tau], being almost 2.5 lower than for [BHEDMA][OAc] (11.55 MPa). The calculated carbon dioxide sorption capacity for [BHEDMA][Tau] and [BHEDMA][OAc] amounted to 0.58 and 0.30 mmol·g−1, respectively. The obtained parameters are comparable with the known solid sorbents and ionic liquids used for CO2 capture. However, the synthesized compounds, combining the advantages of both alkanolamines and ionic liquids, contain no fluorine in their structure and thus match the principles of environmental care.

Materials ◽  
2019 ◽  
Vol 12 (15) ◽  
pp. 2361 ◽  
Author(s):  
Xuyan Song ◽  
Jialin Yu ◽  
Min Wei ◽  
Ran Li ◽  
Xi Pan ◽  
...  

Ionic-liquid-functionalized zeolitic imidazolate frameworks (ZIF) were synthesized using the co-ligands of 2-methylimidazole and amine-functionalized ionic liquid during the formation process of frameworks. The resulting ionic-liquid-modified ZIF had a specific surface area of 1707 m2·g−1 with an average pore size of about 1.53 nm. Benefiting from the large surface area and the high solubility of carbon dioxide in ionic-liquid moieties, the synthesized materials exhibited a carbon dioxide adsorption capacity of about 24.9 cm3·g−1, whereas it was 16.3 cm3·g−1 for pristine ZIF at 25 °C under 800 mmHg. The results demonstrate that the modification of porous materials with ionic liquids could be an effective way to fabricate solid sorbents for carbon dioxide adsorption.


2016 ◽  
Vol 18 (2) ◽  
pp. 1140-1149 ◽  
Author(s):  
Tristan J. Simons ◽  
Thomas Verheyen ◽  
Ekaterina I. Izgorodina ◽  
R. Vijayaraghavan ◽  
Scott Young ◽  
...  

Carbon dioxide chemical absorption and regeneration was investigated in two protic ionic liquids using novel calorimetric techniques.


RSC Advances ◽  
2016 ◽  
Vol 6 (13) ◽  
pp. 10462-10470 ◽  
Author(s):  
Bobo Cao ◽  
Jiuyao Du ◽  
Shuangyue Liu ◽  
Xiao Zhu ◽  
Xuejun Sun ◽  
...  

Both computational and experimental studies show amino-functionalized ionic liquids, [aEMMIM][X] (X = F, Cl, Br, and I), can chemically capture CO2.


2014 ◽  
Vol 77 ◽  
pp. 197-205 ◽  
Author(s):  
Alicia M. Pinto ◽  
Héctor Rodríguez ◽  
Alberto Arce ◽  
Ana Soto

Fuel ◽  
2018 ◽  
Vol 211 ◽  
pp. 76-86 ◽  
Author(s):  
Franciele L. Bernard ◽  
Rafael B. Duczinski ◽  
Marisol F. Rojas ◽  
Maria Carolina C. Fialho ◽  
Luz Ángela Carreño ◽  
...  

2016 ◽  
Vol 13 (1) ◽  
pp. 53
Author(s):  
Siti Nabihah Jamaludin ◽  
Ruzitah Mohd Salleh

Anthropogenic CO2 emissions has led to global climate change and widely contributed to global warming since its concentration has been increasing over time. It has attracted vast attention worldwide. Currently, the different CO2 capture technologies available include absorption, solid adsorption and membrane separation. Chemical absorption technology is regarded as the most mature technology and is commercially used in the industry. However, the key challenge is to find the most efficient solvent in capturing CO2. This paper reviews several types of CO2 capture technologies and the various factors influencing the CO2 absorption process, resulting in the development of a novel solvent for CO2 capture.


2017 ◽  
Vol 4 (2) ◽  
Author(s):  
Xing He ◽  
Xiao-Ya Li ◽  
Yu Song ◽  
Shu-Mei Xia ◽  
Xian-Dong Lang ◽  
...  

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