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Liquid organic salt

The liquid organic salts are a new class of polar idiases for gas chromatography (56,57). They differ from the phases considered so far in that they contain ions that provide strong interactions associated with the Coulombic fields. Some representative examples of typical liquid org2utic salts and their chromatographic... [Pg.63]

COLUMN OPERATING CHARACTERISTICS FOR SOME LIQUID ORGANIC SALTS r.t. room teapMratur ... [Pg.582]

Significant progress has been made in the application of ionic liquids (ILs) as alternative solvents to C02 capture because of their unique properties such as very low vapour pressure, a broad range of liquid temperatures, excellent thermal and chemical stabilities and selective dissolution of certain organic and inorganic materials. ILs are liquid organic salts at ambient conditions with a cationic part and an anionic part. [Pg.91]

Abstract The term Lewis acid catalysts generally refers to metal salts like aluminium chloride, titanium chloride and zinc chloride. Their application in asymmetric catalysis can be achieved by the addition of enantiopure ligands to these salts. However, not only metal centers can function as Lewis acids. Compounds containing carbenium, silyl or phosphonium cations display Lewis acid catalytic activity. In addition, hypervalent compounds based on phosphorus and silicon, inherit Lewis acidity. Furthermore, ionic liquids, organic salts with a melting point below 100 °C, have revealed the ability to catalyze a range of reactions either in substoichiometric amount or, if used as the reaction medium, in stoichiometric or even larger quantities. The ionic liquids can often be efficiently recovered. The catalytic activity of the ionic liquid is explained by the Lewis acidic nature of then-cations. This review covers the survey of known classes of metal-free Lewis acids and their application in catalysis. [Pg.349]

At present, ionic liquids, also known as room-temperature ionic liquids, nonaqueous ionic liquids, molten salts, liquid organic salts, and fused salts, are considered to be the new generation of solvents. In chemical abstracts, they can be found under the headings ionic liquid or liquids ionic. Publications on ionic liquids are increasing in number. [Pg.453]

Poole SK, Furton KG, Poole CF. 1988. Determination of benzene and toluene in gasoline by gas chromatography using a liquid organic salt column. J Chromatogr Sci 26 67-73. [Pg.407]

On the other hand, several groups have reported the use of ionic liquids (organic salts consisting only of ions, Uquid at or near room temperature) as media for the biocatalytic modification of polyhydroxylated compounds, including ascorbic acid... [Pg.124]

The master retention equation of the solvation parameter model relating the above processes to experimentally quantifiable contributions from all possible intermolecular interactions was presented in section 1.4.3. The system constants in the model (see Eq. 1.7 or 1.7a) convey all information of the ability of the stationary phase to participate in solute-solvent intermolecular interactions. The r constant refers to the ability of the stationary phase to interact with solute n- or jr-electron pairs. The s constant establishes the ability of the stationary phase to take part in dipole-type interactions. The a constant is a measure of stationary phase hydrogen-bond basicity and the b constant stationary phase hydrogen-bond acidity. The / constant incorporates contributions from stationary phase cavity formation and solute-solvent dispersion interactions. The system constants for some common packed column stationary phases are summarized in Table 2.6 [68,81,103,104,113]. Further values for non-ionic stationary phases [114,115], liquid organic salts [68,116], cyclodextrins [117], and lanthanide chelates dissolved in a poly(dimethylsiloxane) [118] are summarized elsewhere. [Pg.99]

Poly(diethylene glycol succinate) DECS (Hi) Liquid organic salts 0.230 1.572 2.105 0.171 0.407 -0.650... [Pg.100]

The use of solvatochromic compounds for characterizing common laboratory solvents was extended to other media, such as liquid organic salts and supercritical solvent systems. Solvatochromic probes were widely employed in the characterization of microenvironments, such as the interphase of micellar systems. ... [Pg.1334]

Summers CA, flowers RA (2000) Protein renaturation by the liquid organic salt ethylammonium nitrate. Protein Sci 9 2001-2008... [Pg.124]

Shetty, P.H., Youngberg, P.J., Kersten, B.R. Poole, C.F. (1987). Solvent properties of liquid organic salts used as mobile phases in microcolumn reversed-phase liquid chromatography, /. Chromatogr.A Vol.411 61-79. [Pg.339]

Fnrton KG, Poole CF (1987) Thermodynamic characteristics of solute-solvent interactions in liquid organic salt solvents, studied by gas chromatography. J Chromatogr 399 47-67... [Pg.120]

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See also in sourсe #XX -- [ Pg.90 ]



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Liquid electrolytes organic electrolyte salts

Liquid organic salt phases

Liquid salts

Organic liquids

Organic salts

Stationary phases liquid organic salts

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