1- Propanol ionic conductances

A° values for other ions in the given solvent followed readily from the conductances of tetraethylammonium or picrate salts by application of Kohlrausch s rule of independent ionic migration. Ulich has summarised many of the earlier results some later examples of solvents to which this approach has been applied are ethylenedichloride (Pic"), HCN (Pic" and Bu4N ), dimethylacetamide (Bu4N+), and propanol, wopropanoF and butanoF ° (Hept4N and (/-Am)3BuN ). 

The recovery of the ionic liquid l-ethyl-3-methylimidazolium acetate (abbreviated as [C2mim][OAc]) with a solvent mixture containing acetone, 2-propanol, and a small amount of water was demonstrated. This formed a phase switchable solvent system, which could concentrate and separate oleophilic solutes, short chain carbohydrates, and lignin fragments from used ionic liquid in a two-stage extraction procedure. Figure 7.5 shows the whole process of ionic liquid recovery and biomass separation. The research was conducted by pre-treating 100 g of corn stover with 10 wt.% of ionic liquid. After the separation process, the recovered ionic liquid contained few residual solutes, so it could be reused for biomass dissolution and... 

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