BTX and ethyl benzene are extracted from these streams using selective solvents such as sulfolene or ethylene glycol. The extracted components are separated through lengthy fractional distillation, ...

WHEN a trace of maleic anhydride (I) is added at room temperature to a colourless solution of tri-phenylphosphine (P Ph 3) in chloroform or benzene (for example, 1 drop of 1 per cent maleic ...