Pretreating process for the stabilization of a catalyst for...

Details Pretreating process for the stabilization of a catalyst for... Pretreating process for the stabilization of a catalyst for...

B - Operations, Transporting

01

J

252/12, 252/2.E,

B01J 29/06 (2006.01) B01J 29/18 (2006.01) C07C 5/27 (2006.01)

Patent

CA 1098102

ABSTRACT OF THE DISCLOSURE A method of stabilizing a catalyst for the conversion of aromatic hydrocarbons in the presence of hydrogen such as the isomerization of C8 aromatic hydrocarbons to increase the content of p-xylene, is carried out by contacting a catalyst in advance of start-up with hydrocarbons in the liquid phase at a temperature preferably of about 50° to about 250°C. and preferably at elevatedpressure up to about 50 Kg/cm2 in the absence of hydrogen; the catalyst being prepared by the acid leaching of a hydrogen form mordenite to produce a mordenite having a silica to alumina molar ratio of about 15 to 21. Preferably the hydrocarbons used for the contacting have the composition of the feed to be converted.

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