| 摘要 |
PURPOSE:To provide a hydrocracking process which can provide kerosene and gas oil fractions in high yields and can be operated for a long time. CONSTITUTION:A hydrocarbon is hydrogenated at 330-400 deg.C in the presence of a first catalyst prepared by impregnating an inorganic oxide support with at least one member selected from among the metals of groups VI and VIII of the periodic table and then hydrocracked at 360-420 deg.C in the presence of a second catalyst prepared by impregnating a support comprising an inorganic oxide matrix and a crystalline aluminosilicate of an Na2O content of 0.3wt. 5 or below, an SiO2/Al2O3 molar ratio of 5-9 and a lattice constant of 24.42-24.30Angstrom and/or a transition-metal-containing aluminosilicate prepared by treating the aluminosilicate with a transition metal solution and impregnating the impregnated support with an aqueous solution containing at least one member selected from among the metals of group VIII of the periodic table and drying and firing the last impregnated support with an aqueous solution of a pH of 3 or below containing phosphorus and at least one member selected from among the metals of group VI of the periodic table. |
