This can be explained by the combined action of the numerous factors, including the formation of azeotropic combinations consisting of specific combinations of hydrocarbons and an increase in the proportion of the heavy fractions in evaporating the light fraction of a complex mixture. The determination...
Azeotropic Distillation Owing to the intermolecular attractions between molecules in the mixture, mixtures may have a higher or lower boiling point than either of their components. A mixture of this kind is called an azeotrope. When the liquids in the azeotrope evaporate, the vapor has the same c...
It is essential that the solvent mixture be anhydrous or substantially so, as the presence of water in even the small amount encountered in the ethanol-water azeotropic mixture (where the solvent contains substantial quantities of ethanol) is sufficient to prevent the separation desired. In order...
azeotropic mixture of water and trifluoroacetic acid, subjecting said azeotropic mixture of water and trifluoroacetic acid to liquid-liquid cxtraction conditions in the presence of a mixture of hydrocarbons comprising 2,4-dimethylpcntanc and benzene, from this latter extraction operation withdrawing a ...
A diameter ratio of d = 4.5 corresponds to systems with significant like and unlike excluded volume interactions, and in this case the I-N transition takes place over the whole composition range with weak fractionation and one azeotropic point. Surprisingly, the coexisting nematic phase is of ...
(S)-secondary alcohol out of an azeotropic mixture; adding NaHCO3 or an aqueous solution thereof into still residues, stirring, adding lipase Novozym 435, and performing an esterolysis reaction to regenerate (R)-secondary alcohol; and performing secondary azeotropic distillation to obtain (R)-...
Homogeneous azeotropic distillation is a technique for separating a mixture by adding an entrainer, which then forms a homogeneous minimum or maximum boiling azeotrope with one or more feed components. Where the components of the mixture are not miscible in all proportions with each other, and ...
Moreover, it could be confirmed that the quasi-azeotropic composition have been overcome during the EED operation.doi:10.1016/j.ijhydene.2006.08.060Seong-Dae HongJeong-Keun KimByeong-Kwon KimSang-Il ChoiKi-Kwang BaeGab-Jin HwangesInternational Journal of Hydrogen Energy...
b) dispersion of the solution into droplets, c) introducing said droplets into a hydroxide bath, d) washing the resulting beads, e) drying the beads by azeotropic distillation using an immiscible organic solvent, f) thermal treatment of the beads in an oxidising atmosphere, g) thermal treatment...
b) dispersion of the solution into droplets, c) introducing said droplets into a hydroxide bath, d) washing the resulting beads, e) drying the beads by azeotropic distillation using an immiscible organic solvent, f) thermal treatment of the beads in an oxidising atmosphere, g) thermal treatment...