摘要 |
The separation of the para-isomer of a dialkyl benzene from a mixture of the isomers thereof, especially p-xylene, by contacting the mixture at adsorption conditions with a type X or type Y zeolite adsorbent, ion exchanged with barium and potassium, and recovering the para-alkylbenzene from the adsorbent by contacting the adsorbent with fluorobenzene or a difluorobenzene at desorption conditions.
|