US 7,803,735 B2 · Hydroconversion processes employing multi-metallic catalysts and method for making thereof

Abstract

A catalyst precursor composition and methods for making such catalyst precursor are disclosed. The catalyst precursor comprises at least a metal compound selected from Group VIII, Group IIB, Group IIA, Group IVA and combinations thereof, at least one Group VIB metal, at least one organic, oxygen-containing ligand, and a cellulose-containing material. Catalysts prepared from the sulfidation of such catalyst precursors are used in the hydroprocessing of hydrocarbon feeds. In one embodiment, the sulfidation is carried out by contacting the catalyst precursor with hydrogen and a sulfur containing compound in a “slow” process with the sulfidation taking place over a few days up to two weeks, e.g., for at least over 96 hours. In another embodiment, the sulfidation is in a “quick” process with the sulfidation taking place in less than 72 hours. The catalyst prepared from the slow sulfidation process gives a 700° F.+ conversion rate of at least 25% higher than the 700° F.+ conversion rate of a catalyst prepared from a quick sulfidation process.

Claims23

Dependent claims

A process for forming catalyst composition prepared from an unsupported catalyst precursor composition having a formula Av[(MP)(OH)x(L)ny]z(MVIBO4), the process comprises:

co-precipitating at reaction conditions to form a precipitate or cogel-precursor:
at least one of a Group VIB metal compound MVIB, at least a metal compound MP selected from Group VIII, Group IIB, Group IIA, Group IVA and combinations thereof, and at least one of an organic oxygen-containing ligand;
wherein the precursor has the formula Av[(MP)(OH)x(L)ny]z(MVIBO4, wherein A is at least one of an alkali metal cation, an ammonium, an organic ammonium and a phosphonium cation, MP is selected from Group VIII, Group IIB, Group IIA, Group IVA and combinations thereof, P is oxidation state of MP with P having a value of +2 or +4 depending on the selection of MP, a L is at least one organic oxygen-containing ligand, is at least a Group VIB metal, MP:MVIB has an atomic ratio of 100:1 to 1:100, v−2+P*z−x*z+n*y*z=0;
and 0<y≦−P/n;
0<x≦P;
0<v≦2;
0<z;
perform a solid-liquid separation to collect the catalyst precursor;
and
contacting the catalyst precursor with hydrogen and a sulfur containing compound to sulfidate the catalyst precursor.

7 more elements

Dependencies are inferred from the claim text.

Hydroconversion processes employing multi-metallic catalysts and method for making thereof

Life of this patent

Hydroconversion processes employing multi-metallic catalysts and method for making thereof

Life of this patent

Abstract

Claims23