초록 ▼

The present invention concerns the use of a catalyst comprising an extruded essentially alumina-based support, constituted by a plurality of juxtaposed agglomerates and partially in the form of packs of flakes and partially in the form of needles, and optionally comprising at least one catalytic met

The present invention concerns the use of a catalyst comprising an extruded essentially alumina-based support, constituted by a plurality of juxtaposed agglomerates and partially in the form of packs of flakes and partially in the form of needles, and optionally comprising at least one catalytic metal or a compound of a catalytic metal from group VIB and/or at least one catalytic metal or compound of a catalytic metal from group VIII, further comprising at least one dopant selected from the group formed by boron, phosphorous, silicon (or a silica different from that which can be found in the support) and halogens, in an ebullating bed process and for hydrorefining and hydroconverting hydrocarbon feeds.

대표청구항 ▼

[ What is claimed is:] [1.]1. In a process for hydrotreating a hydrocarbon feed, in contact with an ebullating bed of catalyst, the improvement wherein the catalyst comprises an essentially alumina-based extruded support, essentially constituted by a plurality of juxtaposed agglomerates, at least on

[ What is claimed is:] [1.]1. In a process for hydrotreating a hydrocarbon feed, in contact with an ebullating bed of catalyst, the improvement wherein the catalyst comprises an essentially alumina-based extruded support, essentially constituted by a plurality of juxtaposed agglomerates, at least one metal selected from the group consisting of metals or compounds of metals from group VIB and metals or compounds of metals from group VIII, in which the sum S of the group VIB and VIII metals, expressed as the oxides, is in the range of 0.1% to 50% by weight, characterized in that each of said agglomerates is partly in the form of packs of flakes and partly in the form of needles, said needles being uniformly dispersed both about the packs of flakes and between the flakes, and in that the catalyst further comprises at least one dopant selected from the group formed by phosphorous, boron, silicon (or a silica which is not of the type which could be contained in the selected support) and halogens.