| abstract |
A hydroconversion catalyst with a bimodal pore structure:n an oxide matrix predominantly of calcined aluminium; a hydro-dehydrogenative active phase of at least one group VIII metal being at least partly commixed within the said oxide matrix mainly made up of calcined aluminium, an S BET specific surface greater than 100 m 2 /g, a mesoporous median diameter in volume between 12 and 25 nm inclusive, a macroporous median diameter in volume between 250 and 1500 nm inclusive, a mesoporous volume as measured by mercury intrusion porosimeter greater than or equal to 0.55 ml/g and a total measured pore volume by mercury porosimetry greater than or equal to 0.70 ml/g;n na method for preparing a residue catalyst for hydroconversion/hydroprocessing by commixing the active phase with a particular alumina,n nthe use of the catalyst in hydroproces sing, including hydroproces sing heavy feeds. |