Why acetate anion ionic liquid is best for carbon dioxide capturing?
Best insight from top research papers
The acetate anion ionic liquid is advantageous for carbon dioxide capturing due to its ability to form stable complexes with CO2 through chemisorption, as highlighted in the research papers. When acetate anions interact with CO2, they facilitate the formation of CO2–[AEEA]+ complexes, which are stabilized by hydrogen bonding, enhancing CO2 absorption rates and solubilities . Ionic liquids, including those with acetate anions, offer high thermal stability, tunability, and the potential for physisorption or chemisorption of CO2, making them effective for gas separations . Additionally, the supported IL membranes composed of acetate anion-based mixtures exhibit superior CO2 permeability and selectivity compared to other known membranes, showcasing the effectiveness of acetate anion ionic liquids in carbon capture applications .
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| Papers (5) | Insight |
|---|---|
1 Citations | The acetate anion in the ionic liquid mixture forms stable CO2-[AEEA]+ complexes through hydrogen bonding, enhancing CO2 absorption rates and lowering enthalpies, making it ideal for carbon dioxide capture. |
| Acetate anion ionic liquids are effective for CO2 capture due to their unique properties, as discussed in the paper, making them a favorable choice for this application. | |
| Acetate anion ionic liquids are effective for CO2 capture due to their tunability for physisorption and chemisorption, enhancing CO2 solubility and reactivity while maintaining stability. | |
| Acetate anion ionic liquids are effective for CO2 capture due to their tunability for chemisorption, enhancing reactivity with CO2, and stability control, as highlighted in the research. | |
| Acetate anion ionic liquids are effective for CO2 capture due to their structure, properties, and ability to facilitate electrochemical conversion processes, as highlighted in the research on CO2 capture in ionic liquids. |
Related Questions
Why acetate ionic liquid is best for carbon dioxide capturing?5 answersAcetate ionic liquids, such as 1-ethyl-3-methylimidazolium acetate ([emim][AcO]), are ideal for carbon dioxide (CO2) capturing due to their excellent performance characteristics. When [emim][AcO] is combined with N-(2-aminoethyl)ethanolamine-based IL ([AEEA][X]), the resulting mixture exhibits higher CO2 absorption rates, larger solubilities, and lower enthalpies of CO2 absorption compared to single ILs. Ionic liquids, including acetate-based ones, are considered greener solvents for CO2 capture, offering high thermal stability, low vapor pressure, and tunability. The chemisorption of CO2 in acetate ILs can form stable complexes, enhancing the capture efficiency. Additionally, the unique properties of acetate ILs allow for the fabrication of supported membranes with high CO2 permeability and selectivity, surpassing traditional facilitated transport membranes.
How acetate form stable carbamate complex with carbon dioxide?5 answersThe formation of a stable carbamate complex involving acetate and carbon dioxide is a significant process in various applications, particularly in carbon capture technologies. Research has shown that the complexation of acetate with carbon dioxide leads to the stable formation of carbamate species. This interaction typically involves the dissolution of carbonic ester, amine, and acetate catalyst in a suitable solvent, followed by a reaction at specific conditions to yield the desired carbamate product. Furthermore, studies have demonstrated that the carbamate of 2-methylpiperidine is a stable species in aqueous solutions, with its speciation and thermodynamic properties being thoroughly investigated. Overall, the stable formation of carbamate complexes involving acetate and carbon dioxide is influenced by various factors such as temperature, ionic strength, and reaction conditions, highlighting the complexity and importance of this chemical process.
Why imidazolium acetate ionic liquid is best for carbon dioxide capturing?5 answersThe imidazolium acetate ionic liquid has been identified as the best option for carbon dioxide (CO2) capturing due to its exceptional characteristics. Research has shown that imidazolium acetate ILs exhibit high CO2 absorption rates, large CO2 solubilities, and lower enthalpies of CO2 absorption compared to other ILs. Furthermore, the specific composition of mixtures involving imidazolium acetate ILs, such as [AEEA][X]/[emim][AcO], has demonstrated enhanced CO2 absorption capabilities, with stabilized CO2–[AEEA]+ complexes formed through chemical reactions with CO2. This leads to improved CO2 permeability and selectivity, making it a promising candidate for efficient CO2 capture technologies. Additionally, the use of imidazolium acetate ILs supported on a polysulfone polymeric matrix has shown significant enhancements in CO2 sorption capacity and solubility, further highlighting the effectiveness of this specific IL for CO2 capture.
What is the CO2-capture technology membrane used for?5 answersMembrane technology is used for CO2 capture and separation. It is considered a low-cost and energy-efficient technique with minimal environmental impact. Membranes can be made from various polymeric materials and offer advantages such as flexibility and mechanical strength. Hybrid membrane cryogenic (HMC) and low-temperature membrane cryogenic (LTMC) systems combine membrane and cryogenic techniques for CO2 capture. Biocatalytic membranes, which combine enzymes and membranes, show promise for both CO2 capture and utilization. Membrane-based processes are used for pre-, post-, and oxy-fuel combustion CO2 capture. Mixed matrix membranes (MMMs), which combine polymers and nanoparticles, are also used for CO2 sorption and separation.
What are the different electrolyte solutions that can be used for CO2 capture in molten electrolysis?5 answersMolten carbonate electrolysis cells can be used for CO2 capture in molten electrolysis. Non-aqueous electrolytes based on dimethylformamide (DMF) and n-methyl-2-pyrrolidone (NMP) can also be used for CO2 capture in molten electrolysis. Additionally, molten salt electrolysis can be used for carbon deposition.
How can ionic liquid inhibit/suppress hydrogen evolution reaction (HER) and enhance CO2 reduction?4 answersIonic liquids (ILs) can inhibit or suppress the hydrogen evolution reaction (HER) and enhance CO2 reduction through various mechanisms. One approach is to modify the functional groups present in cationic surfactants, such as hexadecyl cetrimonium bromide (CTAB), to promote the HER-inhibiting effect. Another strategy is to use hydrophobic materials, such as polytetrafluoroethylene (PTFE), to prevent the supply of protons to the electrode surface and suppress the HER. Additionally, specifically adsorbed Cl- ions on a Zn electrode can block the HER and facilitate the electron transfer process, leading to higher CO Faradaic efficiency for CO2 reduction. ILs themselves can also act as catalysts or supporting parts of catalysts, lowering overpotential and improving product selectivity in the CO2 reduction reaction. Overall, ILs offer unique advantages in enhancing CO2 reduction and suppressing the HER, making them promising candidates for electrochemical CO2 conversion technologies.