Low pressure hydrodealkylation of ethylbenzene and xylene...

Details Low pressure hydrodealkylation of ethylbenzene and xylene... Low pressure hydrodealkylation of ethylbenzene and xylene...

C - Chemistry, Metallurgy

07

C

C07C 15/08 (2006.01) C07C 4/18 (2006.01) C07C 5/27 (2006.01)

Patent

CA 2283724

A new process for the hydrodealkylation of ethylbenzene and the isomerization of xylenes at low pressure and at a low hydrogen to ethylbenzene mole ratio as well as a low hydrogen to hydrocarbon feed mole ration using a catalyst comprising (a) HZSM-5 having a particle size less than 1.0 microns, (b) a Group VIII metal such as platinum, and (c) an additional element such as magnesium.

L'invention concerne un nouveau procédé d'hydrodéalkylation d'éthylbenzène et d'isomérisation de xylènes à faible pression et à faible rapport molaire hydrogène/éthylbenzène, ainsi qu'à faible rapport molaire hydrogène/charge d'hydrocarbure; on fait appel, dans ce procédé, à un catalyseur comprenant (a) HZSM-5 possédant une taille de particules inférieure à 1,0 micromètres, (b) un métal du groupe VIII tel que le platine, et (c) un élément supplémentaire tel que le magnésium.

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