Xylene isomerization

Details Xylene isomerization Xylene isomerization

C - Chemistry, Metallurgy

07

C

260/689.5

C07C 15/08 (2006.01) B01J 29/40 (2006.01) C07C 5/27 (2006.01)

Patent

CA 1142553

ABSTRACT OF THE DISCLOSURE Isomerization of xylenes in admixture with ethylbenzene by contact with a zeolite catalyst such as ZSM-5 is improved by use of zeolite which has been steamed at high temperature to reduce activity, the reaction being carried out at a temperature of 371 to 427°C. At these conditions, conversion of ethylbenzene follows a reaction path which permits high conversion of ethylbenzene to benzene without loss of xylenes by disproportionation.

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