Ionic Liquids: Potential Materials for Carbon Dioxide Capture and Utilization

Shukla, Shalini; Khokarale, Santosh Govind; Bui, Thai Q.; Mikkola, Jyri‐Pekka

doi:10.3389/fmats.2019.00042

Cited by 107 publications

(72 citation statements)

References 68 publications

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“…Novel strategies must be developed to not only resolve the environmental problems arising from global warming but also reduce carbon emission at the source. In addition, it is important to devise new technologies and design novel materials that can be used as a media to capture CO2 effectively [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Porous Aromatic Melamine Schiff Bases as Highly Efficient Media for Carbon Dioxide Storage

et al. 2019

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High energy demand has led to excessive fuel consumption and high-concentration CO2 production. CO2 release causes serious environmental problems such as the rise in the Earth’s temperature, leading to global warming. Thus, chemical industries are under severe pressure to provide a solution to the problems associated with fuel consumption and to reduce CO2 emission at the source. To this effect, herein, four highly porous aromatic Schiff bases derived from melamine were investigated as potential media for CO2 capture. Since these Schiff bases are highly aromatic, porous, and have a high content of heteroatoms (nitrogen and oxygen), they can serve as CO2 storage media. The surface morphology of the Schiff bases was investigated through field emission scanning electron microscopy, and their physical properties were determined by gas adsorption experiments. The Schiff bases had a pore volume of 0.005–0.036 cm3/g, an average pore diameter of 1.69–3.363 nm, and a small Brunauer–Emmett–Teller surface area (5.2–11.6 m2/g). The Schiff bases showed remarkable CO2 uptake (up to 2.33 mmol/g; 10.0 wt%) at 323 K and 40 bars. The Schiff base containing the 4-nitrophenyl substituent was the most efficient medium for CO2 adsorption and, therefore, can be used as a gas sorbent.

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Section: Introductionmentioning

confidence: 99%

Porous Aromatic Melamine Schiff Bases as Highly Efficient Media for Carbon Dioxide Storage

et al. 2019

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“…In addition, from the viewpoint of industrialization, recent progress on transport properties of IL fluids and process design, as well as the assessment of IL-based processes, were addressed in some reviews [17,30,31], covering relevant studies on CO 2 capture and separation with conventional ILs, functionalized ILs, IL blending solvents, and IL-based membranes.…”

Section: Introductionmentioning

confidence: 99%

CO2 Desorption Performance from Imidazolium Ionic Liquids by Membrane Vacuum Regeneration Technology

et al. 2020

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In this work, the membrane vacuum regeneration (MVR) process was considered as a promising technology for solvent regeneration in post-combustion CO2 capture and utilization (CCU) since high purity CO2 is needed for a technical valorization approach. First, a desorption test by MVR using polypropylene hollow fiber membrane contactor (PP-HFMC) was carried out in order to evaluate the behavior of physical and physico-chemical absorbents in terms of CO2 solubility and regeneration efficiency. The ionic liquid 1-ethyl-3-methylimidazolium acetate, [emim][Ac], was presented as a suitable alternative to conventional amine-based absorbents. Then, a rigorous two-dimensional mathematical model of the MVR process in a HFMC was developed based on a pseudo-steady-state to understand the influence of the solvent regeneration process in the absorption–desorption process. CO2 absorption–desorption experiments in PP-HFMC at different operating conditions for desorption, varying vacuum pressure and temperature, were used for model validation. Results showed that MVR efficiency increased from 3% at room temperature and 500 mbar to 95% at 310K and 40 mbar vacuum. Moreover, model deviation studies were carried out using sensitivity analysis of Henry’s constant and pre-exponential factor of chemical interaction, thus as to contribute to the knowledge in further works.

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“…The reduction of CO 2 concentration in the environment through its capture is an important strategy [5]. Various inexpensive materials have been designed to act as storage media for CO 2 [6][7][8][9][10]. The use of chemical absorbents showed some success [11].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and use of carvedilol metal complexes as carbon dioxide storage media

et al. 2020

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The consequences of increased fossil fuel consumption on the environment presents a challenge. Carbon dioxide capture is a useful technique to reduce global warming. Therefore, three carvedilol metal (nickel, cobalt, and copper) complexes were synthesized as potential carbon dioxide storage media. The structural and textural properties of metal carvedilol complexes have been established using various techniques. The metal complexes have mesoporous structures in which pore size was approximately 3 nm. Particle size ranged from 51.0 to 393.9 nm with a relatively small surface area (6.126–9.073 m2/g). The carvedilol metal complexes have either type-III or IV nitrogen adsorption–desorption isotherm. The complexes showed reasonable capacity towards carbon dioxide uptake (up to 18.21 cm3/g) under the optimized condition (40 bar and 323 K). Graphical Abstract

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Ionic Liquids: Potential Materials for Carbon Dioxide Capture and Utilization

Cited by 107 publications

References 68 publications

Porous Aromatic Melamine Schiff Bases as Highly Efficient Media for Carbon Dioxide Storage

Porous Aromatic Melamine Schiff Bases as Highly Efficient Media for Carbon Dioxide Storage

CO2 Desorption Performance from Imidazolium Ionic Liquids by Membrane Vacuum Regeneration Technology

Synthesis and use of carvedilol metal complexes as carbon dioxide storage media

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