| 摘要 |
The para-isomer from a hydrocarbon feed mixture comprising at least two bi-alkyl substituted aromatic isomers, including the para-isomer, said isomers having from 8 to about 18 carbon atoms per molecule, is separated with a specially prepared solid aluminosilicate adsorbent containing barium and potassium cations or barium cations at the exchangeable sites. The key feature of the adsorbent used in this process is the absence of hydrogen cations or Group II-A cations other than barium at the exchangeable sites thereby permitting faster adsorption-desorption rates for the desired para isomer.
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