Aromatic hydrocarbon isomer separation process

Details Aromatic hydrocarbon isomer separation process Aromatic hydrocarbon isomer separation process

C - Chemistry, Metallurgy

07

C

183/32

C07C 7/13 (2006.01) B01J 20/18 (2006.01)

Patent

CA 1047944

ABSTRACT OF THE DISCLOSURE A process for the separation of the para-isomer from a hydrocarbon feed mixture comprising at least two bi- alkyl substituted monocyclic aromatic isomers, including the para-isomer, said isomers having from 8 to about 18 carbon atoms per molecule using a specially prepared adsorbent com- prising a Y zeolite containing at the exchangeable cationic sites one or more selected cations. The feed mixture is passed through a bed of the adsorbent wherein the para- isomer is preferentially adsorbed within the adsorbent and thereafter recovered from the adsorbent. Novel feature of the process is the use of the specially prepared adsorbents which have faster adsorption-desorption rates for the de- sired para-isomer.

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