Fixation of Carbon Dioxide with Functionalized Ionic Liquids

Abstract

Functional ionic liquids are formed by introducing functional groups into traditional ionic liquids. They have both good absorption capacity and excellent catalytic activity for carbon dioxide, and therefore are widely used in the chemical conversion of carbon dioxide. This paper focuses on the application of amino‐functionalized ionic liquids, carboxyl‐functionalized ionic liquids, hydroxyl‐functionalized ionic liquids and various other functionalized ionic liquids in carbon dioxide conversion. Their possible role in chemical carbon fixation is discussed by analyzing several typical chemical carbon fixation mechanisms.

Ionic Liquids in Metal, Photo-, Electro-, and (Bio) Catalysis

“…However, these processes usually involve the use of over-stoichiometric amounts of ILs and will not be treated in this review. The reader is invited to consult excellent and extensive reviews on this topic from the past few years. − …”

Advances in CO2 Absorption by Deep Eutectic Solvents

“…As previously mentioned in the Introduction section, many functionalized ILs have been utilized for CO 2 absorption as scientists explore solvents capable of trapping CO 2 . Over the years, ILs have been extensively investigated due to their advantages, including good thermal stability, , high CO 2 absorption capacity, and ease of use. However, some ILs are solid at the used temperatures (like [Bmim]Cl).…”

Oxygen-Containing Quaternary Phosphonium Salts (oxy-QPSs): Synthesis, Properties, and Cellulose Dissolution

“…The following supporting information can be downloaded at https: //www.mdpi.com/article/10.3390/polym15204097/s1. The IR spectra of tri-tert-butyl(methoxymethyl)phosphonium tetrafluoroborate (2); Figure S39: The IR spectra of tri-tert-butyl(2-ethoxyethyl)phosphonium bromide (3); Figure S40: The IR spectra of tri-tert-butyl((2-methoxyethoxy)methyl)phosphonium chloride (4); Figure S41: The IR spectra of tri-tert-butyl((2-methoxyethoxy)methyl)phosphonium tetrafluoroborate (5); Figure S42: The IR spectra of tri-tert-butyl((2-methoxyethoxy)methyl)phosphonium hexafluorophosphate (6); Figure S43: The IR spectra of tri-tert-butyl(2-carboxyethyl)phosphonium bromide (7); Figure S44: The IR spectra of tri-tert-butyl(5-carboxypentyl)phosphonium bromide (8); Figure S45: The IR spectra of tri-tert-butyl(2-methoxy-2-oxoethyl)phosphonium bromide (9); Figure S46: The IR spectra of tri-tert-butyl(2-ethoxy-2-oxoethyl)phosphonium bromide (10); Figure S47: The IR spectra of tri-tert-butyl(2-iso-propoxy-2-oxoethyl)phosphonium bromide (11); Figure S48: The IR spectra of tri-tert-butyl(2-butoxy-2-oxoethyl)phosphonium bromide (12); Figure S49 S1: Selected bond length (Å) and angle ( • ) in the crystals for compounds 2; Table S2: Selected bond length (Å) and angle ( • ) in the crystals for compounds 4; Table S3. Selected bond length (Å) and angle ( • ) in the crystals for compounds 6; Table S4: Selected bond length (Å) and angle ( • ) in the crystals for compounds 7; Table S5: Selected bond length (Å) and angle ( • ) in the crystals for compounds 8; Table S6: Selected bond length (Å) and angle ( • ) in the crystals for compounds 9; Table S7: Selected bond length (Å) and angle ( • ) in the crystals for compounds 10; Table S8: Selected bond length (Å) and angle ( • ) in the crystals for compounds 11; Table S9: Activity of oxy-QPS against non-pathogenic microbes; Table S10: Ecotoxicity of oxy-QPS to D. magna.…”

“…Considering the tremendous potential for a wide structural diversity, a reasonable stage of development was the emergence of task-specific ionic liquids (TSILs) [9]. This is a type of highly customized ILs that do not only serve as solvents; for example, through functionalization with oxygen-containing groups, their properties (viscosity, lyophilicity, hydrophilicity, hydrogen bonding ability, and electrical conductivity) can be easily tuned in a wide range, making them suitable for applications in organocatalysis, synthesis, gas absorption, supercapacitor development, and analytical chemistry [10][11][12][13]. Interest in the functionalization of ILs is still maintained, and the effect of the ether group on the physical constants and crystal packing is investigated [14].…”

“…Figure S3: The 1 H NMR (300 MHz, CDCl 3 ) tri-tert-butyl(2-iso-propoxy-2-oxoethyl)phosphonium bromide(11); FigureS32: The 13 C{ 1 H} NMR (75 MHz, CDCl 3 ) of tri-tert-butyl(2-iso-propoxy-2oxoethyl)phosphonium bromide(11); FigureS33: The 31 P{ 1 H} NMR (121.5 MHz, CDCl 3 ) of tri-tertbutyl(2-iso-propoxy-2-oxoethyl)phosphonium bromide(11); FigureS34: The 1 H NMR (300 MHz, CDCl 3 ) tri-tert-butyl(2-butoxy-2-oxoethyl)phosphonium bromide(12); FigureS35: The 13 C{ 1 H} NMR (75 MHz, CDCl 3 ) of tri-tert-butyl(2-butoxy-2-oxoethyl)phosphonium bromide(12); FigureS36: The 31 P{ 1 H} NMR (121.5 MHz, CDCl 3 ) of tri-tert-butyl(2-butoxy-2-oxoethyl)phosphonium bromide(12); FigureS37: The IR spectra of tri-tert-butyl(methoxymethyl)phosphonium chloride (1); FigureS38:…”