Benzene and methanol make a minimum boiling point homogeneous binary azeotrope with the mole ratio 2:3. Some characteristic vibrational modes, as well as (1)H NMR signals change due to the azeotrope formation. The extend of interaction of these molecules causes significant changes on some vibrational modes involved, and (1)H NMR signals show some changes on their position. No IR, Raman, and NMR...

The separation of benzene and cyclohexane azeotrope is one the most challenging processes in petrochemical industry. In this paper, deep eutectic solvents (DES) were used as for cyclohexane. DES1 (1:2 mix tetrabutylammonium bromide (TBAB) levulinic acid (LA)), DES2 TBAB ethylene glycol (EG)) DES3 ChCl (choline chloride) LA) entrainers, vapor-liquid equilibrium (VLE) measurements at atmospheric ...

The general anaesthetic sevoflurane was prepared from chlorosevo ether using two fluorinating agents, potassium fluoride dihydrate in the presence of a phase transfer catalyst and potassium fluoride in the presence of a complexing solvent. A pure sevoflurane product could not be recovered via conventional distillation from the crude reaction mass obtained using the dehydrate (at 72% purity), du...

The production of anhydrous ethanol, due to the presence azeotrope, is difficult using conventional distillation, at pressure atmospheric, as a separation process. One methods used extractive consisting in addition third substance capable change vapor-liquid equilibrium system and obtaining dehydration ethanol. Therefore, ethanol process propylene glycol solvent was evaluated ProSimPlus softwar...