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摘要

PROBLEM TO BE SOLVED: To provide a method for hydroconverting a petroleum fraction in high selectivity at a low reaction temperature. ;SOLUTION: This method comprises bringing a petroleum fraction into contact with a catalyst containing at least one matrix, at least one zeolite Y (Y1) having a crystal parameter of 24.15-24.38Å, at least one zeolite Y (Y2) having a crystal parameter of above 24.38 to 24.51Å and at least one hydrogenation/ dehydrogenation element at a temperature of at least 230°C under a pressure of 2 to below 8Mpa at a hourly space velocity of 0.15-10h^-1 in the presence of 100 N1 hydrogen per liter of the feedstock.;COPYRIGHT: (C)1998,JPO