What a catch! Basic ionic liquids (ILs) based on phosphonium hydroxide derivative can be tuned for CO2 capture by varying the weak proton donors, which have different pKa values. The stability, absorption capacity, and enthalpy of ILs could easily tuned: best IL has good stability (>300 °C), energy saving (ca. 56 kJ mol−1), equimolar capability.

CO2 capture: Protic ionic liquids (PILs) from a superbase and fluorinated alcohol, imidazole, pyrrolinone, or phenol were designed to capture based on the reactivity of their anions CO2. These PILs are capable rapid reversible about one equivalent CO2, which is superior those sorption systems traditional aprotic ILs. Detailed facts importance specialist readers published as "Supporting Information". Such documents peer-reviewed, but not copy-edited typeset. They made available submitted by...

A general strategy for the synthesis of porous, fluorescent, triazine-framework-based membranes with intrinsic porosity through an aromatic nitrile trimerization reaction is presented. The essence this lies in use a superacid to catalyze cross-linking efficiently at low temperature, allowing porous polymer membrane architectures be facilely derived. With functionalized triazine units, exhibits increased selectivity separation CO(2) over N(2). good ideal CO(2)/N(2) 29 ± 2 was achieved...

An expedient, template-free, high-yield, and solventless route to nitrogen-rich micro- mesoporous carbons is reported based on direct, atmospheric-pressure carbonization of task-specific ionic liquids bearing one or more nitrile side chains. The resulting textural properties (pore regime, surface area) are highly dependent upon the structural motifs ions comprising corresponding parent liquid, uniform carbon films routinely deposited with this novel methodology, highlighting excited new...

A new strategy for the preparation of functional porous carbons is developed via direct, ambient-pressure, thermal pyrolysis task-specific ionic liquids (ILs). The simple synthesis lies in synergistic use negligible volatility ILs and incorporation crosslinkable nitrile groups anions. resulting carbon materials at 800 °C retain an extremely high content nitrogen (up to 18 at%). Carbon are central many important applications because their wide availability superior physicochemical properties,...

An ionic liquid (IL) trihexyltetradecylphosphonium bis(2-ethylhexyl) phosphate has been investigated as a potential antiwear lubricant additive. Unlike most other ILs that have very low solubility in nonpolar fluids, this IL is fully miscible with various hydrocarbon oils. In addition, it thermally stable up to 347 °C, showed no corrosive attack cast iron an ambient environment, and excellent wettability on solid surfaces (e.g., contact angle <8°). Most importantly, phosphonium-based...

Abstract Phenolic ionic liquids for the efficient and reversible capture of CO 2 were designed prepared from phosphonium hydroxide substituted phenols. The electron‐withdrawing or electron‐donating ability, position, number substituents on anion these correlated with physicochemical properties liquids. results show that stability, viscosity, ‐capturing ability significantly affected by substituents. Furthermore, relationship between decomposition temperature, ‐absorption capacity, basicity...

Abstract Ionic liquids (ILs) are a family of nonconventional molten salts that offer many advantages, such as negligible vapor pressures, flammability, wide liquidus ranges, good thermal stability, and much synthesis flexibility. The unique solvation environment these ILs provides new reaction or flux media for controlling formation solid‐state materials with minimum perturbation morphologies. A successful lithiation via ionothermal using cost‐effective Li halide source recyclable solvents...

Unique synergistic effects between phosphonium-alkylphosphate ionic liquids (ILs) and zinc dialkyldithiophosphate (ZDDP) are discovered when used together as lubricant additives, resulting in significant friction wear reduction along with distinct tribofilm composition mechanical properties. The synergism is attributed to the remarkably 30-70× higher-than-nominal concentrations of hypothetical new compounds (via anion exchange IL ZDDP) on fluid surface/interface.

The solubility of carbon dioxide in a series imidazolium-based room-temperature ionic liquids has been determined using quartz crystal microbalance. Henry's constants were obtained for CO2 nine different liquids: 1-methyl-3-propylimidazolium bis[trifluoromethylsulfonyl]amide (C3mimTf2N), 1-n-butyl-3-methylimidazolium (C4mimTf2N), C4mimTf2N with polyethylenimine, 1-n-hexyl-3-methylimidazolium (C6mimTf2N), 1-methyl-3-n-octylimidazolium (C8mimTf2N),...

A series of N-alkyl aza-18-crown-6 ethers were synthesized and characterized by NMR spectroscopy mass spectrometry. These monoaza-substituted crown in ionic liquids investigated as recyclable extractants for separation Sr2+ Cs+ from aqueous solutions. The pH-sensitive complexation capability these ligands allows a facile stripping process to be developed so that both macrocyclic can reused. extraction efficiencies selectivities Na+, K+, Cs+, studied comparison those dicyclohexano-18-crown-6...

Solvent extraction of cesium ions from aqueous solution to hydrophobic ionic liquids without the introduction an organophilic anion in phase was demonstrated using calix[4]arene-bis(tert-octylbenzo-crown-6) (BOBCalixC6) as extractant. The selectivity this process toward and use a sacrificial cation exchanger (NaBPh(4)) control loss imidazolium solutions by ion exchange have been investigated.

:Ionic liquids have received increasing interest in recent years for "green" synthesis and separations because they essentially no vapor pressure. We begun an investigation of the potential ionic gas separations, including removal carbon dioxide from stack generated coal-fired power plants. In this paper, we report results measurements permeance nitrogen supported liquid membranes. Preliminary a porous alumina membrane saturated with l-butyl-3-methyl imidazolium bis[trinuoromethylsulfonyl]...

Imidazolium-based ionic liquids continue to attract interest in many areas of chemistry because their low melting points, relatively viscosities, ease synthesis, and good stabilities against oxidative reductive conditions. However, they are not totally inert under conditions due the intrinsic acidity hydrogen at C-2 position imidazolium cation. In this work, was exploited combination with an organic superbase for capture CO2 atmospheric pressure. During absorption CO2, imidazolium-based...

Abstract The distribution of polar organic compounds typical water contaminants (organic acids, alcohols, and aromatic compounds) associated with oil gas production was measured between nine hydrophobic, room‐temperature ionic liquids. liquids used in this study were 1‐butyl‐3‐methylimidazolium bistrifluoromethanesulfonylimide, 1‐hexyl‐3‐methylimidazolium 1‐octyl‐3‐methylimidazolium hexafluorophosphate, trihexyltetradecylphosphonium 1‐butyl‐1‐methyl‐pyrrolidinium dodecylbenzenesulfonate,...

Integrated sorption systems consisting of 1 : mixtures an alcohol-functionalized ionic liquid and a superbase were found to be effective for CO2 capture under atmospheric pressure, eliminating the use volatile n-alkanols or water. Conversely, by using current approach, there is no longer requirement maintaining scrupulously dry conditions. The effect structure, choice superbase, their relative ratios, temperature, reaction time on absorption release investigated. Our results demonstrate that...

Our previous work suggested great potential for a phosphonium-organophosphate ionic liquid (IL) as an antiwear lubricant additive. In this study, set of five ILs were carefully designed and synthesized, with identical organophosphate anions but dissimilar phosphonium cations, to allow systematic investigation the effects cation alkyl chain length symmetry on physicochemical tribological properties. Symmetric cations shorter chains seem increase density thermal stability due closer packing....

Oil-soluble phosphonium-based ionic liquids (ILs) have recently been reported as potential ashless lubricant additives. This study is to expand the IL chemistry envelope and achieve fundamental correlations between ion structures ILs' physiochemical tribological properties. Here we present eight ILs containing two different phosphonium cations seven anions from three groups: organophosphate, carboxylate, sulfonate. The oil solubility of seems largely governed by molecule size structure...