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AssigneeInstitut Francais du Petrole
InventorsEric Benazzi, Tivadar Cseri, Magalie Roy-Auberger, Patrick Euzen
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The invention relates to a catalyst that contains at least one silica-alumina, whereby said silica-alumina has the following characteristics: A content by weight of silica SiO2 of between 10 and 60% by weight, an Na content that is less than 300 ppm by weight, a total pore volume of between 0.5 and 1.2 ml/g that is measured by mercury porosimetry, the porosity of said silica-alumina is as follows: i/. The volume of these mesopores whose diameter is between 40 Å and 150 Å, and whose mean diameter varies between 80 and 120 Å represents between 30 and 80% of the total pore volume, ii/. The volume of the macropores, whose diameter is greater than 500 Å and preferably between 1000 Å and 10,000 Å represents between 20 and 80% of the total pore volume, a specific surface area of greater than 200 m2/g, and at least one hydro-dehydrogenating element that is selected from the group that is formed by the metals of group VIB and group VIII, optionally an element that is selected from the group that is formed by phosphorus, boron and silicon, of group VIIA, the elements of groups VIIB and VB. The invention also relates to the use of this catalyst for the transformation of hydrocarbon fractions, in particular hydrorefining and hydrocracking.
Catalyst that comprises at least one hydro-dehydrogenating element and a substrate that comprises at least one silica-alumina, whereby said silica-alumina has the following characteristics:
Catalyst according to one of the preceding claims, in which the silica-alumina comprises 30-50% of Q2 radicals, in which an Si atom is linked to two Si or Al atoms and to two OH groups and also comprises 10-30% of Q3 radicals in which an Si atom is linked to three Si or Al atoms and to an OH group.
Catalyst according to one of the preceding claims that contains boron and/or silicon.
Catalyst according to one of the preceding claims that contains at least one element that is selected from among groups VIIA, VIIB, and VB.
Catalyst according to one of the preceding claims, in which the substrate is constituted by silica-alumina.
Catalyst according to one of the preceding claims that has undergone a sulfurization treatment.
Process for hydrocracking with a catalyst according to one of the preceding claims, at a temperature that is greater than 200° C., a pressure that is greater than 0.1 Mpa, with an amount of hydrogen of at least 50 l/l of feedstock, and with an hourly volumetric flow rate of 0.1 to 20 volumes of feedstock per volume of catalyst and per hour.
Dependencies are inferred from the claim text.