TRANSITION METAL SULFIDE PROMOTED MOLYBDENUM OR TUNGSTEN SULFIDE CATALYSTS AND THEIR USES FOR HYDROPROCESSING

摘要

ABSTRACT OF THE DISCLOSUREHydrocarbon feeds are upgraded by contactinga feed, at elevated temperature and in the presence ofhydrogen, with a self-promoted catalyst prepared byheating one or more catalyst precursors under oxygen-free conditions in the presence of sulfur at atemperature of at least about 150°C. The catalyst pre-cursors will be one or more compounds of the formula(ML)(MoyW1-yS4) wherein M comprises one or more di-valent promoter metals selected from the group con-sisting of Ni, Co, Zn, Cu and mixtures thereof, whereiny is any value ranging from 0 to 1 and wherein L is oneor more neutral, nitrogen-containing ligands at leastone of which is a chelating, polydentate ligand.