Patent ID: 9096484
Filing Date: 2015-08-04
Classification: B01J,C07C,Y02P

Abstract:
1. A process comprising contacting a paraxylene-depleted C8 aromatic hydrocarbon feed including ethylbenzene and xylene isomers with a catalyst system to provide a final product comprising an increased amount of paraxylene and decreased amount of ethylbenzene when compared with said feed, wherein said catalyst system comprises a first bed including at least one first metal selected from platinum, rhenium, and mixtures thereof in an amount from about 0.1 to 0.3 wt. %, and at least one second metal selected from silver, copper, ruthenium, indium and tin, dispersed on ZSM-5, and a second bed including at least one first metal selected from platinum, rhenium, and mixtures thereof in an amount from about 0.1 to 0.3 wt. %, and at least one second metal selected from silver, copper, ruthenium, indium and tin, dispersed on ZSM-5, further characterized in that ZSM-5 in the first bed is silicon-selectivated and ZSM-5 in the second bed is not silicon-selectivated, and the ratio of the first metal to the second metal in the first bed and the second bed is from 1:1 to 1:4.