Hydroprocessing catalysts and methods for making thereof

摘要

An improved hydroprocessing slurry catalyst is provided for the upgrade of heavy oil feedstock. The catalyst comprises dispersed particles in a hydrocarbon medium with the dispersed particles have an average particle size ranging from 1 to 300 μm. The catalyst has a total pore volume of at least 0.5 cc/g and a polymodal pore distribution with at least 80% of pore sizes in the range of 5 to 2,000 Angstroms in diameter. The catalyst is prepared from sulfiding and dispersing a metal precursor solution in a hydrocarbon diluent, the metal precursor comprising at least a Primary metal precursor and optionally a Promoter metal precursor, the metal precursor solution having a pH of at least 4 and a concentration of less than 10 wt. % of Primary metal in solution.

主权项

1. A slurry catalyst for use in hydroprocessing a heavy oil feedstock, wherein:
the slurry catalyst comprises a plurality of dispersed particles in a hydrocarbon medium, wherein the dispersed particles have an average particle size ranging from 1 to 300 μm, the slurry catalyst has a polymodal pore distribution with at least 80% of pore sizes in the range of 5 to 2,000 Angstroms in diameter, and the slurry catalyst is prepared from sulfiding and dispersing a metal precursor solution in a hydrocarbon diluent, the metal precursor solution comprising at least a water-soluble salt of a Primary metal selected from Group VIB, Group JIB metals and Group VIII metals, the metal precursor solution having a pH of at least 4 and a concentration of less than 10 wt. % of the Primary metal in solution.