| 摘要 |
A catalyst comprises a hydro-dehydrogenating element from groups VIB or VIII (0.01-5.5 wt.%), an oxide of a doping element selected from phosphorus, boron or silicon, and a non-zeolitic support based on silica-alumina (containing more than 5% and less than 95% silica). The catalyst has the following physical characteristics: a mean porous diameter (porosymmetry to Hg) of 20-140 Å; a total porous volume (porosymmetry to Hg and N) of 0.1-0.5 ml/g; a surface area (BET) less than 0.1 ml/g; a porous volume (pores greater than 140 Å) of less than 0.1 ml/g; a porous volume (pores greater than 160 Å) of less than 0.1 ml/g; a porous volume (pores greater than 200 Å) of less than 0.1 ml/g; a porous volume (pores greater than 500 Å) of less than 0.1 ml/g; an X-ray diffraction diagram comprising at least one peak characteristic of at least one transition alumina selected from alpha, rho, chi, eta, gamma, theta and delta; and a packed density (DRT) greater than 0.75 g/cm3>. An independent claim is also included for hydrocracking/hydroconvers ion processes using the catalyst.
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