Water → Aniline

Participants

Reaction Steps

The washed nitrobenzene is finally freed from dissolved water, unreacted benzene and any organic impurities by a further work-up. This work-up preferably takes place by distillation, the vapours of water and benzene and any organic impurities being expelled overhead. The vapours are cooled and transported into a separating vessel. Water settles out in the bottom phase and is separated off. Benzene and low boilers are found in the top phase, which are supplied back to the reaction as recycled benzene (d.2). A rectifying column is preferably used as the distillation apparatus. The bottom product of the distillation, optionally after a further distillation in which nitrobenzene is obtained as distillate (i.e. as head or sidestream product), is supplied to further applications (such as hydrogenation to form aniline) as pure nitrobenzene (d.1). (Step d(iv).)

Provenance & Evidence