Patent ID: 8002970
Filing Date: 2011-08-23
Classification: B01J,C10G

Abstract:
1. A catalyst comprising at least one hydrodehydrogenating element selected from the group formed by elements from group VIB and group VIII of the periodic table, 0.5% to 2.5% by weight of a phosphorus doping element and a support based on zeolite Y defined by a lattice parameter a of the unit cell in the range 24.40×10 −10 m to 24.15×10 −10 m and based on silica-alumina containing a quantity of more than 5% by weight and 95% by weight or less of silica (SiO 2 ), said catalyst having the following characteristics: a mean pore diameter, measured by mercury porosimetry, in the range 20 Å to 140 Å; a total pore volume, measured by mercury porosimetry, in the range 0.1 ml/g to 0.5 ml/g; a total pore volume, measured by nitrogen porosimetry, in the range 0.1 ml/g to 0.5 ml/g; a BET specific surface area in the range 100 to 600 m a pore volume, measured by mercury porosimetry, included in pores with a diameter of more than 140 Å, of less than 0.1 ml/g; a pore volume, measured by mercury porosimetry, included in pores with a diameter of more than 160 Å, of less than 0.1 ml/g; a pore volume, measured by mercury porosimetry, included in pores with a diameter of more than 200 Å, of less than 0.1 ml/g; a pore volume, measured by mercury porosimetry, included in pores with a diameter of more than 500 Å, is greater than 0.02 ml/g and lower than 0.07 ml/g; an X ray diffraction diagram which contains at least the characteristic principal peaks of at least one transition alumina included in the group composed of alpha, rho, khi, eta, gamma, kappa, theta and delta aluminas; a catalyst settled packing density of more than 0.75 g/cm